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Thu, 25 Feb 2021 16:08:18 GMT Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B7A0C6E04E; Thu, 25 Feb 2021 16:08:18 +0000 (GMT) Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 1ACB46E04C; Thu, 25 Feb 2021 16:08:18 +0000 (GMT) Received: from sbct-3.pok.ibm.com (unknown [9.47.158.153]) by b03ledav001.gho.boulder.ibm.com (Postfix) with ESMTP; Thu, 25 Feb 2021 16:08:18 +0000 (GMT) From: Stefan Berger To: keyrings@vger.kernel.org, linux-crypto@vger.kernel.org, davem@davemloft.net, herbert@gondor.apana.org.au, dhowells@redhat.com, zohar@linux.ibm.com Cc: linux-kernel@vger.kernel.org, patrick@puiterwijk.org, linux-integrity@vger.kernel.org, Stefan Berger , Jarkko Sakkinen Subject: [PATCH v9 1/9] crypto: Add support for ECDSA signature verification Date: Thu, 25 Feb 2021 11:07:54 -0500 Message-Id: <20210225160802.2478700-2-stefanb@linux.vnet.ibm.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210225160802.2478700-1-stefanb@linux.vnet.ibm.com> References: <20210225160802.2478700-1-stefanb@linux.vnet.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.369,18.0.761 definitions=2021-02-25_09:2021-02-24,2021-02-25 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 lowpriorityscore=0 phishscore=0 impostorscore=0 malwarescore=0 adultscore=0 spamscore=0 mlxlogscore=999 mlxscore=0 suspectscore=0 priorityscore=1501 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2102250127 Precedence: bulk List-ID: X-Mailing-List: linux-integrity@vger.kernel.org From: Stefan Berger Add support for parsing the parameters of a NIST P256 or NIST P192 key. Enable signature verification using these keys. The new module is enabled with CONFIG_ECDSA: Elliptic Curve Digital Signature Algorithm (NIST P192, P256 etc.) is A NIST cryptographic standard algorithm. Only signature verification is implemented. Cc: Herbert Xu Cc: "David S. Miller" Cc: linux-crypto@vger.kernel.org Signed-off-by: Stefan Berger Acked-by: Jarkko Sakkinen --- v8->v9: - unregister nist_p192 curve if nist_p256 cannot be registered --- crypto/Kconfig | 10 + crypto/Makefile | 6 + crypto/ecc.c | 13 +- crypto/ecc.h | 28 +++ crypto/ecdsa.c | 369 +++++++++++++++++++++++++++++++++++ crypto/ecdsasignature.asn1 | 4 + crypto/testmgr.c | 12 ++ crypto/testmgr.h | 267 +++++++++++++++++++++++++ include/linux/oid_registry.h | 6 +- 9 files changed, 703 insertions(+), 12 deletions(-) create mode 100644 crypto/ecdsa.c create mode 100644 crypto/ecdsasignature.asn1 diff --git a/crypto/Kconfig b/crypto/Kconfig index a367fcfeb5d4..a31df40591f5 100644 --- a/crypto/Kconfig +++ b/crypto/Kconfig @@ -247,6 +247,16 @@ config CRYPTO_ECDH help Generic implementation of the ECDH algorithm +config CRYPTO_ECDSA + tristate "ECDSA (NIST P192, P256 etc.) algorithm" + select CRYPTO_ECC + select CRYPTO_AKCIPHER + select ASN1 + help + Elliptic Curve Digital Signature Algorithm (NIST P192, P256 etc.) + is A NIST cryptographic standard algorithm. Only signature verification + is implemented. + config CRYPTO_ECRDSA tristate "EC-RDSA (GOST 34.10) algorithm" select CRYPTO_ECC diff --git a/crypto/Makefile b/crypto/Makefile index b279483fba50..982066c6bdfb 100644 --- a/crypto/Makefile +++ b/crypto/Makefile @@ -50,6 +50,12 @@ sm2_generic-y += sm2.o obj-$(CONFIG_CRYPTO_SM2) += sm2_generic.o +$(obj)/ecdsasignature.asn1.o: $(obj)/ecdsasignature.asn1.c $(obj)/ecdsasignature.asn1.h +$(obj)/ecdsa.o: $(obj)/ecdsasignature.asn1.h +ecdsa_generic-y += ecdsa.o +ecdsa_generic-y += ecdsasignature.asn1.o +obj-$(CONFIG_CRYPTO_ECDSA) += ecdsa_generic.o + crypto_acompress-y := acompress.o crypto_acompress-y += scompress.o obj-$(CONFIG_CRYPTO_ACOMP2) += crypto_acompress.o diff --git a/crypto/ecc.c b/crypto/ecc.c index c80aa25994a0..25e79fd70566 100644 --- a/crypto/ecc.c +++ b/crypto/ecc.c @@ -42,7 +42,7 @@ typedef struct { u64 m_high; } uint128_t; -static inline const struct ecc_curve *ecc_get_curve(unsigned int curve_id) +const struct ecc_curve *ecc_get_curve(unsigned int curve_id) { switch (curve_id) { /* In FIPS mode only allow P256 and higher */ @@ -54,6 +54,7 @@ static inline const struct ecc_curve *ecc_get_curve(unsigned int curve_id) return NULL; } } +EXPORT_SYMBOL(ecc_get_curve); static u64 *ecc_alloc_digits_space(unsigned int ndigits) { @@ -1281,16 +1282,6 @@ void ecc_point_mult_shamir(const struct ecc_point *result, } EXPORT_SYMBOL(ecc_point_mult_shamir); -static inline void ecc_swap_digits(const u64 *in, u64 *out, - unsigned int ndigits) -{ - const __be64 *src = (__force __be64 *)in; - int i; - - for (i = 0; i < ndigits; i++) - out[i] = be64_to_cpu(src[ndigits - 1 - i]); -} - static int __ecc_is_key_valid(const struct ecc_curve *curve, const u64 *private_key, unsigned int ndigits) { diff --git a/crypto/ecc.h b/crypto/ecc.h index d4e546b9ad79..2ea86dfb5cf7 100644 --- a/crypto/ecc.h +++ b/crypto/ecc.h @@ -33,6 +33,8 @@ #define ECC_DIGITS_TO_BYTES_SHIFT 3 +#define ECC_MAX_BYTES (ECC_MAX_DIGITS << ECC_DIGITS_TO_BYTES_SHIFT) + /** * struct ecc_point - elliptic curve point in affine coordinates * @@ -70,6 +72,32 @@ struct ecc_curve { u64 *b; }; +/** + * ecc_swap_digits() - Copy ndigits from big endian array to native array + * + * @in: input array + * @out: output array + * @ndigits: number of digits to copy + */ +static inline void ecc_swap_digits(const u64 *in, u64 *out, + unsigned int ndigits) +{ + const __be64 *src = (__force __be64 *)in; + int i; + + for (i = 0; i < ndigits; i++) + out[i] = be64_to_cpu(src[ndigits - 1 - i]); +} + +/** + * ecc_get_curve() - Get a curve given its curve_id + * + * @curve_id: Id of the curve + * + * Returns pointer to the curve data, NULL if curve is not available + */ +const struct ecc_curve *ecc_get_curve(unsigned int curve_id); + /** * ecc_is_key_valid() - Validate a given ECDH private key * diff --git a/crypto/ecdsa.c b/crypto/ecdsa.c new file mode 100644 index 000000000000..04fbb3d2abc5 --- /dev/null +++ b/crypto/ecdsa.c @@ -0,0 +1,369 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (c) 2021 IBM Corporation + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include +#include +#include +#include +#include +#include + +#include "ecc.h" +#include "ecdsasignature.asn1.h" + +struct ecc_ctx { + unsigned int curve_id; + const struct ecc_curve *curve; + + bool pub_key_set; + u64 x[ECC_MAX_DIGITS]; /* pub key x and y coordinates */ + u64 y[ECC_MAX_DIGITS]; + struct ecc_point pub_key; +}; + +struct ecdsa_signature_ctx { + const struct ecc_curve *curve; + u64 r[ECC_MAX_DIGITS]; + u64 s[ECC_MAX_DIGITS]; +}; + +/* + * Get the r and s components of a signature from the X509 certificate. + */ +static int ecdsa_get_signature_rs(u64 *dest, size_t hdrlen, unsigned char tag, + const void *value, size_t vlen, + unsigned int ndigits) +{ + size_t keylen = ndigits * sizeof(u64); + ssize_t diff = vlen - keylen; + const char *d = value; + u8 rs[ECC_MAX_BYTES]; + + if (!value || !vlen) + return -EINVAL; + + /* diff = 0: 'value' has exacly the right size + * diff > 0: 'value' has too many bytes; one leading zero is allowed that + * makes the value a positive integer; error on more + * diff < 0: 'value' is missing leading zeros, which we add + */ + if (diff > 0) { + /* skip over leading zeros that make 'value' a positive int */ + if (*d == 0) { + vlen -= 1; + diff--; + d++; + } + if (diff) + return -EINVAL; + } + if (-diff >= keylen) + return -EINVAL; + + if (diff) { + /* leading zeros not given in 'value' */ + memset(rs, 0, -diff); + } + + memcpy(&rs[-diff], d, vlen); + + ecc_swap_digits((u64 *)rs, dest, ndigits); + + return 0; +} + +int ecdsa_get_signature_r(void *context, size_t hdrlen, unsigned char tag, + const void *value, size_t vlen) +{ + struct ecdsa_signature_ctx *sig = context; + + return ecdsa_get_signature_rs(sig->r, hdrlen, tag, value, vlen, + sig->curve->g.ndigits); +} + +int ecdsa_get_signature_s(void *context, size_t hdrlen, unsigned char tag, + const void *value, size_t vlen) +{ + struct ecdsa_signature_ctx *sig = context; + + return ecdsa_get_signature_rs(sig->s, hdrlen, tag, value, vlen, + sig->curve->g.ndigits); +} + +static int _ecdsa_verify(struct ecc_ctx *ctx, const u64 *hash, + const u64 *r, const u64 *s) +{ + const struct ecc_curve *curve = ctx->curve; + unsigned int ndigits = curve->g.ndigits; + u64 s1[ECC_MAX_DIGITS]; + u64 u1[ECC_MAX_DIGITS]; + u64 u2[ECC_MAX_DIGITS]; + u64 x1[ECC_MAX_DIGITS]; + u64 y1[ECC_MAX_DIGITS]; + struct ecc_point res = ECC_POINT_INIT(x1, y1, ndigits); + + /* 0 < r < n and 0 < s < n */ + if (vli_is_zero(r, ndigits) || vli_cmp(r, curve->n, ndigits) >= 0 || + vli_is_zero(s, ndigits) || vli_cmp(s, curve->n, ndigits) >= 0) + return -EBADMSG; + + /* hash is given */ + pr_devel("hash : %016llx %016llx ... %016llx\n", + hash[ndigits - 1], hash[ndigits - 2], hash[0]); + + /* s1 = (s^-1) mod n */ + vli_mod_inv(s1, s, curve->n, ndigits); + /* u1 = (hash * s1) mod n */ + vli_mod_mult_slow(u1, hash, s1, curve->n, ndigits); + /* u2 = (r * s1) mod n */ + vli_mod_mult_slow(u2, r, s1, curve->n, ndigits); + /* res = u1*G + u2 * pub_key */ + ecc_point_mult_shamir(&res, u1, &curve->g, u2, &ctx->pub_key, curve); + + /* res.x = res.x mod n (if res.x > order) */ + if (unlikely(vli_cmp(res.x, curve->n, ndigits) == 1)) + /* faster alternative for NIST p256 & p192 */ + vli_sub(res.x, res.x, curve->n, ndigits); + + if (!vli_cmp(res.x, r, ndigits)) + return 0; + + return -EKEYREJECTED; +} + +/* + * Verify an ECDSA signature. + */ +static int ecdsa_verify(struct akcipher_request *req) +{ + struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req); + struct ecc_ctx *ctx = akcipher_tfm_ctx(tfm); + size_t keylen = ctx->curve->g.ndigits * sizeof(u64); + struct ecdsa_signature_ctx sig_ctx = { + .curve = ctx->curve, + }; + u8 rawhash[ECC_MAX_BYTES]; + u64 hash[ECC_MAX_DIGITS]; + unsigned char *buffer; + ssize_t diff; + int ret; + + if (unlikely(!ctx->pub_key_set)) + return -EINVAL; + + buffer = kmalloc(req->src_len + req->dst_len, GFP_KERNEL); + if (!buffer) + return -ENOMEM; + + sg_pcopy_to_buffer(req->src, + sg_nents_for_len(req->src, req->src_len + req->dst_len), + buffer, req->src_len + req->dst_len, 0); + + ret = asn1_ber_decoder(&ecdsasignature_decoder, &sig_ctx, + buffer, req->src_len); + if (ret < 0) + goto error; + + /* if the hash is shorter then we will add leading zeros to fit to ndigits */ + diff = keylen - req->dst_len; + if (diff >= 0) { + if (diff) + memset(rawhash, 0, diff); + memcpy(&rawhash[diff], buffer + req->src_len, req->dst_len); + } else if (diff < 0) { + /* given hash is longer, we take the left-most bytes */ + memcpy(&rawhash, buffer + req->src_len, keylen); + } + + ecc_swap_digits((u64 *)rawhash, hash, ctx->curve->g.ndigits); + + ret = _ecdsa_verify(ctx, hash, sig_ctx.r, sig_ctx.s); + +error: + kfree(buffer); + + return ret; +} + +static int ecdsa_ecc_ctx_init(struct ecc_ctx *ctx, unsigned int curve_id) +{ + ctx->curve_id = curve_id; + ctx->curve = ecc_get_curve(curve_id); + if (!ctx->curve) + return -EINVAL; + + return 0; +} + + +static void ecdsa_ecc_ctx_deinit(struct ecc_ctx *ctx) +{ + ctx->pub_key_set = false; +} + +static int ecdsa_ecc_ctx_reset(struct ecc_ctx *ctx) +{ + unsigned int curve_id = ctx->curve_id; + int ret; + + ecdsa_ecc_ctx_deinit(ctx); + ret = ecdsa_ecc_ctx_init(ctx, curve_id); + if (ret == 0) + ctx->pub_key = ECC_POINT_INIT(ctx->x, ctx->y, + ctx->curve->g.ndigits); + return ret; +} + +/* + * Set the public key given the raw uncompressed key data from an X509 + * certificate. The key data contain the concatenated X and Y coordinates of + * the public key. + */ +static int ecdsa_set_pub_key(struct crypto_akcipher *tfm, + const void *key, unsigned int keylen) +{ + struct ecc_ctx *ctx = akcipher_tfm_ctx(tfm); + const unsigned char *d = key; + const u64 *digits = (const u64 *)&d[1]; + unsigned int ndigits; + int ret; + + ret = ecdsa_ecc_ctx_reset(ctx); + if (ret < 0) + return ret; + + if (keylen < 1 || (((keylen - 1) >> 1) % sizeof(u64)) != 0) + return -EINVAL; + /* we only accept uncompressed format indicated by '4' */ + if (d[0] != 4) + return -EINVAL; + + keylen--; + ndigits = (keylen >> 1) / sizeof(u64); + if (ndigits != ctx->curve->g.ndigits) + return -EINVAL; + + ecc_swap_digits(digits, ctx->pub_key.x, ndigits); + ecc_swap_digits(&digits[ndigits], ctx->pub_key.y, ndigits); + ret = ecc_is_pubkey_valid_full(ctx->curve, &ctx->pub_key); + + ctx->pub_key_set = ret == 0; + + return ret; +} + +static void ecdsa_exit_tfm(struct crypto_akcipher *tfm) +{ + struct ecc_ctx *ctx = akcipher_tfm_ctx(tfm); + + ecdsa_ecc_ctx_deinit(ctx); +} + +static unsigned int ecdsa_max_size(struct crypto_akcipher *tfm) +{ + struct ecc_ctx *ctx = akcipher_tfm_ctx(tfm); + + return ctx->pub_key.ndigits << ECC_DIGITS_TO_BYTES_SHIFT; +} + +static int ecdsa_nist_p256_init_tfm(struct crypto_akcipher *tfm) +{ + struct ecc_ctx *ctx = akcipher_tfm_ctx(tfm); + + return ecdsa_ecc_ctx_init(ctx, ECC_CURVE_NIST_P256); +} + +static struct akcipher_alg ecdsa_nist_p256 = { + .verify = ecdsa_verify, + .set_pub_key = ecdsa_set_pub_key, + .max_size = ecdsa_max_size, + .init = ecdsa_nist_p256_init_tfm, + .exit = ecdsa_exit_tfm, + .base = { + .cra_name = "ecdsa-nist-p256", + .cra_driver_name = "ecdsa-nist-p256-generic", + .cra_priority = 100, + .cra_module = THIS_MODULE, + .cra_ctxsize = sizeof(struct ecc_ctx), + }, +}; + +static int ecdsa_nist_p192_init_tfm(struct crypto_akcipher *tfm) +{ + struct ecc_ctx *ctx = akcipher_tfm_ctx(tfm); + + return ecdsa_ecc_ctx_init(ctx, ECC_CURVE_NIST_P192); +} + +static struct akcipher_alg ecdsa_nist_p192 = { + .verify = ecdsa_verify, + .set_pub_key = ecdsa_set_pub_key, + .max_size = ecdsa_max_size, + .init = ecdsa_nist_p192_init_tfm, + .exit = ecdsa_exit_tfm, + .base = { + .cra_name = "ecdsa-nist-p192", + .cra_driver_name = "ecdsa-nist-p192-generic", + .cra_priority = 100, + .cra_module = THIS_MODULE, + .cra_ctxsize = sizeof(struct ecc_ctx), + }, +}; +static bool ecdsa_nist_p192_registered; + +static int ecdsa_init(void) +{ + int ret; + + /* NIST p192 may not be available in FIPS mode */ + ret = crypto_register_akcipher(&ecdsa_nist_p192); + ecdsa_nist_p192_registered = ret == 0; + + ret = crypto_register_akcipher(&ecdsa_nist_p256); + if (ret) + goto nist_p256_error; + return 0; + +nist_p256_error: + if (ecdsa_nist_p192_registered) + crypto_unregister_akcipher(&ecdsa_nist_p192); + return ret; +} + +static void ecdsa_exit(void) +{ + if (ecdsa_nist_p192_registered) + crypto_unregister_akcipher(&ecdsa_nist_p192); + crypto_unregister_akcipher(&ecdsa_nist_p256); +} + +subsys_initcall(ecdsa_init); +module_exit(ecdsa_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Stefan Berger "); +MODULE_DESCRIPTION("ECDSA generic algorithm"); +MODULE_ALIAS_CRYPTO("ecdsa-generic"); diff --git a/crypto/ecdsasignature.asn1 b/crypto/ecdsasignature.asn1 new file mode 100644 index 000000000000..621ab754fb9f --- /dev/null +++ b/crypto/ecdsasignature.asn1 @@ -0,0 +1,4 @@ +ECDSASignature ::= SEQUENCE { + r INTEGER ({ ecdsa_get_signature_r }), + s INTEGER ({ ecdsa_get_signature_s }) +} diff --git a/crypto/testmgr.c b/crypto/testmgr.c index 321e38eef51b..2607602f9de5 100644 --- a/crypto/testmgr.c +++ b/crypto/testmgr.c @@ -4913,6 +4913,18 @@ static const struct alg_test_desc alg_test_descs[] = { .suite = { .kpp = __VECS(ecdh_tv_template) } + }, { + .alg = "ecdsa-nist-p192", + .test = alg_test_akcipher, + .suite = { + .akcipher = __VECS(ecdsa_nist_p192_tv_template) + } + }, { + .alg = "ecdsa-nist-p256", + .test = alg_test_akcipher, + .suite = { + .akcipher = __VECS(ecdsa_nist_p256_tv_template) + } }, { .alg = "ecrdsa", .test = alg_test_akcipher, diff --git a/crypto/testmgr.h b/crypto/testmgr.h index 8c83811c0e35..2adcc0dc0bdd 100644 --- a/crypto/testmgr.h +++ b/crypto/testmgr.h @@ -566,6 +566,273 @@ static const struct akcipher_testvec rsa_tv_template[] = { } }; +/* + * ECDSA test vectors. + */ +static const struct akcipher_testvec ecdsa_nist_p192_tv_template[] = { + { + .key = + "\x04\xf7\x46\xf8\x2f\x15\xf6\x22\x8e\xd7\x57\x4f\xcc\xe7\xbb\xc1" + "\xd4\x09\x73\xcf\xea\xd0\x15\x07\x3d\xa5\x8a\x8a\x95\x43\xe4\x68" + "\xea\xc6\x25\xc1\xc1\x01\x25\x4c\x7e\xc3\x3c\xa6\x04\x0a\xe7\x08" + "\x98", + .key_len = 49, + .params = + "\x30\x13\x06\x07\x2a\x86\x48\xce\x3d\x02\x01\x06\x08\x2a\x86\x48" + "\xce\x3d\x03\x01\x01", + .param_len = 21, + .m = + "\xcd\xb9\xd2\x1c\xb7\x6f\xcd\x44\xb3\xfd\x63\xea\xa3\x66\x7f\xae" + "\x63\x85\xe7\x82", + .m_size = 20, + .algo = OID_id_ecdsa_with_sha1, + .c = + "\x30\x35\x02\x19\x00\xba\xe5\x93\x83\x6e\xb6\x3b\x63\xa0\x27\x91" + "\xc6\xf6\x7f\xc3\x09\xad\x59\xad\x88\x27\xd6\x92\x6b\x02\x18\x10" + "\x68\x01\x9d\xba\xce\x83\x08\xef\x95\x52\x7b\xa0\x0f\xe4\x18\x86" + "\x80\x6f\xa5\x79\x77\xda\xd0", + .c_size = 55, + .public_key_vec = true, + .siggen_sigver_test = true, + }, { + .key = + "\x04\xb6\x4b\xb1\xd1\xac\xba\x24\x8f\x65\xb2\x60\x00\x90\xbf\xbd" + "\x78\x05\x73\xe9\x79\x1d\x6f\x7c\x0b\xd2\xc3\x93\xa7\x28\xe1\x75" + "\xf7\xd5\x95\x1d\x28\x10\xc0\x75\x50\x5c\x1a\x4f\x3f\x8f\xa5\xee" + "\xa3", + .key_len = 49, + .params = + "\x30\x13\x06\x07\x2a\x86\x48\xce\x3d\x02\x01\x06\x08\x2a\x86\x48" + "\xce\x3d\x03\x01\x01", + .param_len = 21, + .m = + "\x8d\xd6\xb8\x3e\xe5\xff\x23\xf6\x25\xa2\x43\x42\x74\x45\xa7\x40" + "\x3a\xff\x2f\xe1\xd3\xf6\x9f\xe8\x33\xcb\x12\x11", + .m_size = 28, + .algo = OID_id_ecdsa_with_sha224, + .c = + "\x30\x34\x02\x18\x5a\x8b\x82\x69\x7e\x8a\x0a\x09\x14\xf8\x11\x2b" + "\x55\xdc\xae\x37\x83\x7b\x12\xe6\xb6\x5b\xcb\xd4\x02\x18\x6a\x14" + "\x4f\x53\x75\xc8\x02\x48\xeb\xc3\x92\x0f\x1e\x72\xee\xc4\xa3\xe3" + "\x5c\x99\xdb\x92\x5b\x36", + .c_size = 54, + .public_key_vec = true, + .siggen_sigver_test = true, + }, { + .key = + "\x04\xe2\x51\x24\x9b\xf7\xb6\x32\x82\x39\x66\x3d\x5b\xec\x3b\xae" + "\x0c\xd5\xf2\x67\xd1\xc7\xe1\x02\xe4\xbf\x90\x62\xb8\x55\x75\x56" + "\x69\x20\x5e\xcb\x4e\xca\x33\xd6\xcb\x62\x6b\x94\xa9\xa2\xe9\x58" + "\x91", + .key_len = 49, + .params = + "\x30\x13\x06\x07\x2a\x86\x48\xce\x3d\x02\x01\x06\x08\x2a\x86\x48" + "\xce\x3d\x03\x01\x01", + .param_len = 21, + .m = + "\x35\xec\xa1\xa0\x9e\x14\xde\x33\x03\xb6\xf6\xbd\x0c\x2f\xb2\xfd" + "\x1f\x27\x82\xa5\xd7\x70\x3f\xef\xa0\x82\x69\x8e\x73\x31\x8e\xd7", + .m_size = 32, + .algo = OID_id_ecdsa_with_sha256, + .c = + "\x30\x35\x02\x18\x3f\x72\x3f\x1f\x42\xd2\x3f\x1d\x6b\x1a\x58\x56" + "\xf1\x8f\xf7\xfd\x01\x48\xfb\x5f\x72\x2a\xd4\x8f\x02\x19\x00\xb3" + "\x69\x43\xfd\x48\x19\x86\xcf\x32\xdd\x41\x74\x6a\x51\xc7\xd9\x7d" + "\x3a\x97\xd9\xcd\x1a\x6a\x49", + .c_size = 55, + .public_key_vec = true, + .siggen_sigver_test = true, + }, { + .key = + "\x04\x5a\x13\xfe\x68\x86\x4d\xf4\x17\xc7\xa4\xe5\x8c\x65\x57\xb7" + "\x03\x73\x26\x57\xfb\xe5\x58\x40\xd8\xfd\x49\x05\xab\xf1\x66\x1f" + "\xe2\x9d\x93\x9e\xc2\x22\x5a\x8b\x4f\xf3\x77\x22\x59\x7e\xa6\x4e" + "\x8b", + .key_len = 49, + .params = + "\x30\x13\x06\x07\x2a\x86\x48\xce\x3d\x02\x01\x06\x08\x2a\x86\x48" + "\xce\x3d\x03\x01\x01", + .param_len = 21, + .m = + "\x9d\x2e\x1a\x8f\xed\x6c\x4b\x61\xae\xac\xd5\x19\x79\xce\x67\xf9" + "\xa0\x34\xeb\xb0\x81\xf9\xd9\xdc\x6e\xb3\x5c\xa8\x69\xfc\x8a\x61" + "\x39\x81\xfb\xfd\x5c\x30\x6b\xa8\xee\xed\x89\xaf\xa3\x05\xe4\x78", + .m_size = 48, + .algo = OID_id_ecdsa_with_sha384, + .c = + "\x30\x35\x02\x19\x00\xf0\xa3\x38\xce\x2b\xf8\x9d\x1a\xcf\x7f\x34" + "\xb4\xb4\xe5\xc5\x00\xdd\x15\xbb\xd6\x8c\xa7\x03\x78\x02\x18\x64" + "\xbc\x5a\x1f\x82\x96\x61\xd7\xd1\x01\x77\x44\x5d\x53\xa4\x7c\x93" + "\x12\x3b\x3b\x28\xfb\x6d\xe1", + .c_size = 55, + .public_key_vec = true, + .siggen_sigver_test = true, + }, { + .key = + "\x04\xd5\xf2\x6e\xc3\x94\x5c\x52\xbc\xdf\x86\x6c\x14\xd1\xca\xea" + "\xcc\x72\x3a\x8a\xf6\x7a\x3a\x56\x36\x3b\xca\xc6\x94\x0e\x17\x1d" + "\x9e\xa0\x58\x28\xf9\x4b\xe6\xd1\xa5\x44\x91\x35\x0d\xe7\xf5\x11" + "\x57", + .key_len = 49, + .params = + "\x30\x13\x06\x07\x2a\x86\x48\xce\x3d\x02\x01\x06\x08\x2a\x86\x48" + "\xce\x3d\x03\x01\x01", + .param_len = 21, + .m = + "\xd5\x4b\xe9\x36\xda\xd8\x6e\xc0\x50\x03\xbe\x00\x43\xff\xf0\x23" + "\xac\xa2\x42\xe7\x37\x77\x79\x52\x8f\x3e\xc0\x16\xc1\xfc\x8c\x67" + "\x16\xbc\x8a\x5d\x3b\xd3\x13\xbb\xb6\xc0\x26\x1b\xeb\x33\xcc\x70" + "\x4a\xf2\x11\x37\xe8\x1b\xba\x55\xac\x69\xe1\x74\x62\x7c\x6e\xb5", + .m_size = 64, + .algo = OID_id_ecdsa_with_sha512, + .c = + "\x30\x35\x02\x19\x00\x88\x5b\x8f\x59\x43\xbf\xcf\xc6\xdd\x3f\x07" + "\x87\x12\xa0\xd4\xac\x2b\x11\x2d\x1c\xb6\x06\xc9\x6c\x02\x18\x73" + "\xb4\x22\x9a\x98\x73\x3c\x83\xa9\x14\x2a\x5e\xf5\xe5\xfb\x72\x28" + "\x6a\xdf\x97\xfd\x82\x76\x24", + .c_size = 55, + .public_key_vec = true, + .siggen_sigver_test = true, + }, +}; + +static const struct akcipher_testvec ecdsa_nist_p256_tv_template[] = { + { + .key = + "\x04\xb9\x7b\xbb\xd7\x17\x64\xd2\x7e\xfc\x81\x5d\x87\x06\x83\x41" + "\x22\xd6\x9a\xaa\x87\x17\xec\x4f\x63\x55\x2f\x94\xba\xdd\x83\xe9" + "\x34\x4b\xf3\xe9\x91\x13\x50\xb6\xcb\xca\x62\x08\xe7\x3b\x09\xdc" + "\xc3\x63\x4b\x2d\xb9\x73\x53\xe4\x45\xe6\x7c\xad\xe7\x6b\xb0\xe8" + "\xaf", + .key_len = 65, + .params = + "\x30\x13\x06\x07\x2a\x86\x48\xce\x3d\x02\x01\x06\x08\x2a\x86\x48" + "\xce\x3d\x03\x01\x07", + .param_len = 21, + .m = + "\xc2\x2b\x5f\x91\x78\x34\x26\x09\x42\x8d\x6f\x51\xb2\xc5\xaf\x4c" + "\x0b\xde\x6a\x42", + .m_size = 20, + .algo = OID_id_ecdsa_with_sha1, + .c = + "\x30\x46\x02\x21\x00\xf9\x25\xce\x9f\x3a\xa6\x35\x81\xcf\xd4\xe7" + "\xb7\xf0\x82\x56\x41\xf7\xd4\xad\x8d\x94\x5a\x69\x89\xee\xca\x6a" + "\x52\x0e\x48\x4d\xcc\x02\x21\x00\xd7\xe4\xef\x52\x66\xd3\x5b\x9d" + "\x8a\xfa\x54\x93\x29\xa7\x70\x86\xf1\x03\x03\xf3\x3b\xe2\x73\xf7" + "\xfb\x9d\x8b\xde\xd4\x8d\x6f\xad", + .c_size = 72, + .public_key_vec = true, + .siggen_sigver_test = true, + }, { + .key = + "\x04\x8b\x6d\xc0\x33\x8e\x2d\x8b\x67\xf5\xeb\xc4\x7f\xa0\xf5\xd9" + "\x7b\x03\xa5\x78\x9a\xb5\xea\x14\xe4\x23\xd0\xaf\xd7\x0e\x2e\xa0" + "\xc9\x8b\xdb\x95\xf8\xb3\xaf\xac\x00\x2c\x2c\x1f\x7a\xfd\x95\x88" + "\x43\x13\xbf\xf3\x1c\x05\x1a\x14\x18\x09\x3f\xd6\x28\x3e\xc5\xa0" + "\xd4", + .key_len = 65, + .params = + "\x30\x13\x06\x07\x2a\x86\x48\xce\x3d\x02\x01\x06\x08\x2a\x86\x48" + "\xce\x3d\x03\x01\x07", + .param_len = 21, + .m = + "\x1a\x15\xbc\xa3\xe4\xed\x3a\xb8\x23\x67\xc6\xc4\x34\xf8\x6c\x41" + "\x04\x0b\xda\xc5\x77\xfa\x1c\x2d\xe6\x2c\x3b\xe0", + .m_size = 28, + .algo = OID_id_ecdsa_with_sha224, + .c = + "\x30\x44\x02\x20\x20\x43\xfa\xc0\x9f\x9d\x7b\xe7\xae\xce\x77\x59" + "\x1a\xdb\x59\xd5\x34\x62\x79\xcb\x6a\x91\x67\x2e\x7d\x25\xd8\x25" + "\xf5\x81\xd2\x1e\x02\x20\x5f\xf8\x74\xf8\x57\xd0\x5e\x54\x76\x20" + "\x4a\x77\x22\xec\xc8\x66\xbf\x50\x05\x58\x39\x0e\x26\x92\xce\xd5" + "\x2e\x8b\xde\x5a\x04\x0e", + .c_size = 70, + .public_key_vec = true, + .siggen_sigver_test = true, + }, { + .key = + "\x04\xf1\xea\xc4\x53\xf3\xb9\x0e\x9f\x7e\xad\xe3\xea\xd7\x0e\x0f" + "\xd6\x98\x9a\xca\x92\x4d\x0a\x80\xdb\x2d\x45\xc7\xec\x4b\x97\x00" + "\x2f\xe9\x42\x6c\x29\xdc\x55\x0e\x0b\x53\x12\x9b\x2b\xad\x2c\xe9" + "\x80\xe6\xc5\x43\xc2\x1d\x5e\xbb\x65\x21\x50\xb6\x37\xb0\x03\x8e" + "\xb8", + .key_len = 65, + .params = + "\x30\x13\x06\x07\x2a\x86\x48\xce\x3d\x02\x01\x06\x08\x2a\x86\x48" + "\xce\x3d\x03\x01\x07", + .param_len = 21, + .m = + "\x8f\x43\x43\x46\x64\x8f\x6b\x96\xdf\x89\xdd\xa9\x01\xc5\x17\x6b" + "\x10\xa6\xd8\x39\x61\xdd\x3c\x1a\xc8\x8b\x59\xb2\xdc\x32\x7a\xa4", + .m_size = 32, + .algo = OID_id_ecdsa_with_sha256, + .c = + "\x30\x45\x02\x20\x08\x31\xfa\x74\x0d\x1d\x21\x5d\x09\xdc\x29\x63" + "\xa8\x1a\xad\xfc\xac\x44\xc3\xe8\x24\x11\x2d\xa4\x91\xdc\x02\x67" + "\xdc\x0c\xd0\x82\x02\x21\x00\xbd\xff\xce\xee\x42\xc3\x97\xff\xf9" + "\xa9\x81\xac\x4a\x50\xd0\x91\x0a\x6e\x1b\xc4\xaf\xe1\x83\xc3\x4f" + "\x2a\x65\x35\x23\xe3\x1d\xfa", + .c_size = 71, + .public_key_vec = true, + .siggen_sigver_test = true, + }, { + .key = + "\x04\xc5\xc6\xea\x60\xc9\xce\xad\x02\x8d\xf5\x3e\x24\xe3\x52\x1d" + "\x28\x47\x3b\xc3\x6b\xa4\x99\x35\x99\x11\x88\x88\xc8\xf4\xee\x7e" + "\x8c\x33\x8f\x41\x03\x24\x46\x2b\x1a\x82\xf9\x9f\xe1\x97\x1b\x00" + "\xda\x3b\x24\x41\xf7\x66\x33\x58\x3d\x3a\x81\xad\xcf\x16\xe9\xe2" + "\x7c", + .key_len = 65, + .params = + "\x30\x13\x06\x07\x2a\x86\x48\xce\x3d\x02\x01\x06\x08\x2a\x86\x48" + "\xce\x3d\x03\x01\x07", + .param_len = 21, + .m = + "\x3e\x78\x70\xfb\xcd\x66\xba\x91\xa1\x79\xff\x1e\x1c\x6b\x78\xe6" + "\xc0\x81\x3a\x65\x97\x14\x84\x36\x14\x1a\x9a\xb7\xc5\xab\x84\x94" + "\x5e\xbb\x1b\x34\x71\xcb\x41\xe1\xf6\xfc\x92\x7b\x34\xbb\x86\xbb", + .m_size = 48, + .algo = OID_id_ecdsa_with_sha384, + .c = + "\x30\x46\x02\x21\x00\x8e\xf3\x6f\xdc\xf8\x69\xa6\x2e\xd0\x2e\x95" + "\x54\xd1\x95\x64\x93\x08\xb2\x6b\x24\x94\x48\x46\x5e\xf2\xe4\x6c" + "\xc7\x94\xb1\xd5\xfe\x02\x21\x00\xeb\xa7\x80\x26\xdc\xf9\x3a\x44" + "\x19\xfb\x5f\x92\xf4\xc9\x23\x37\x69\xf4\x3b\x4f\x47\xcf\x9b\x16" + "\xc0\x60\x11\x92\xdc\x17\x89\x12", + .c_size = 72, + .public_key_vec = true, + .siggen_sigver_test = true, + }, { + .key = + "\x04\xd7\x27\x46\x49\xf6\x26\x85\x12\x40\x76\x8e\xe2\xe6\x2a\x7a" + "\x83\xb1\x4e\x7a\xeb\x3b\x5c\x67\x4a\xb5\xa4\x92\x8c\x69\xff\x38" + "\xee\xd9\x4e\x13\x29\x59\xad\xde\x6b\xbb\x45\x31\xee\xfd\xd1\x1b" + "\x64\xd3\xb5\xfc\xaf\x9b\x4b\x88\x3b\x0e\xb7\xd6\xdf\xf1\xd5\x92" + "\xbf", + .key_len = 65, + .params = + "\x30\x13\x06\x07\x2a\x86\x48\xce\x3d\x02\x01\x06\x08\x2a\x86\x48" + "\xce\x3d\x03\x01\x07", + .param_len = 21, + .m = + "\x57\xb7\x9e\xe9\x05\x0a\x8c\x1b\xc9\x13\xe5\x4a\x24\xc7\xe2\xe9" + "\x43\xc3\xd1\x76\x62\xf4\x98\x1a\x9c\x13\xb0\x20\x1b\xe5\x39\xca" + "\x4f\xd9\x85\x34\x95\xa2\x31\xbc\xbb\xde\xdd\x76\xbb\x61\xe3\xcf" + "\x9d\xc0\x49\x7a\xf3\x7a\xc4\x7d\xa8\x04\x4b\x8d\xb4\x4d\x5b\xd6", + .m_size = 64, + .algo = OID_id_ecdsa_with_sha512, + .c = + "\x30\x45\x02\x21\x00\xb8\x6d\x87\x81\x43\xdf\xfb\x9f\x40\xea\x44" + "\x81\x00\x4e\x29\x08\xed\x8c\x73\x30\x6c\x22\xb3\x97\x76\xf6\x04" + "\x99\x09\x37\x4d\xfa\x02\x20\x1e\xb9\x75\x31\xf6\x04\xa5\x4d\xf8" + "\x00\xdd\xab\xd4\xc0\x2b\xe6\x5c\xad\xc3\x78\x1c\xc2\xc1\x19\x76" + "\x31\x79\x4a\xe9\x81\x6a\xee", + .c_size = 71, + .public_key_vec = true, + .siggen_sigver_test = true, + }, +}; + /* * EC-RDSA test vectors are generated by gost-engine. */ diff --git a/include/linux/oid_registry.h b/include/linux/oid_registry.h index 4462ed2c18cd..b504e2f36b25 100644 --- a/include/linux/oid_registry.h +++ b/include/linux/oid_registry.h @@ -19,8 +19,12 @@ enum OID { OID_id_dsa_with_sha1, /* 1.2.840.10030.4.3 */ OID_id_dsa, /* 1.2.840.10040.4.1 */ - OID_id_ecdsa_with_sha1, /* 1.2.840.10045.4.1 */ OID_id_ecPublicKey, /* 1.2.840.10045.2.1 */ + OID_id_ecdsa_with_sha1, /* 1.2.840.10045.4.1 */ + OID_id_ecdsa_with_sha224, /* 1.2.840.10045.4.3.1 */ + OID_id_ecdsa_with_sha256, /* 1.2.840.10045.4.3.2 */ + OID_id_ecdsa_with_sha384, /* 1.2.840.10045.4.3.3 */ + OID_id_ecdsa_with_sha512, /* 1.2.840.10045.4.3.4 */ /* PKCS#1 {iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs-1(1)} */ OID_rsaEncryption, /* 1.2.840.113549.1.1.1 */ From patchwork Thu Feb 25 16:07:55 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Berger X-Patchwork-Id: 12104499 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-14.0 required=3.0 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(8.16.0.43/8.16.0.43) with SMTP id 11PG4IZF091220; Thu, 25 Feb 2021 11:08:21 -0500 Received: from ppma03wdc.us.ibm.com (ba.79.3fa9.ip4.static.sl-reverse.com [169.63.121.186]) by mx0b-001b2d01.pphosted.com with ESMTP id 36xe4e2wg0-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 25 Feb 2021 11:08:21 -0500 Received: from pps.filterd (ppma03wdc.us.ibm.com [127.0.0.1]) by ppma03wdc.us.ibm.com (8.16.0.42/8.16.0.42) with SMTP id 11PG25jZ025245; Thu, 25 Feb 2021 16:08:20 GMT Received: from b03cxnp08027.gho.boulder.ibm.com (b03cxnp08027.gho.boulder.ibm.com [9.17.130.19]) by ppma03wdc.us.ibm.com with ESMTP id 36tt29fw0q-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 25 Feb 2021 16:08:20 +0000 Received: from b03ledav001.gho.boulder.ibm.com (b03ledav001.gho.boulder.ibm.com [9.17.130.232]) by b03cxnp08027.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 11PG8JqP12845414 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 25 Feb 2021 16:08:19 GMT Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 68E806E052; Thu, 25 Feb 2021 16:08:19 +0000 (GMT) Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id CCC766E04C; Thu, 25 Feb 2021 16:08:18 +0000 (GMT) Received: from sbct-3.pok.ibm.com (unknown [9.47.158.153]) by b03ledav001.gho.boulder.ibm.com (Postfix) with ESMTP; Thu, 25 Feb 2021 16:08:18 +0000 (GMT) From: Stefan Berger To: keyrings@vger.kernel.org, linux-crypto@vger.kernel.org, davem@davemloft.net, herbert@gondor.apana.org.au, dhowells@redhat.com, zohar@linux.ibm.com Cc: linux-kernel@vger.kernel.org, patrick@puiterwijk.org, linux-integrity@vger.kernel.org, Stefan Berger , Tianjia Zhang Subject: [PATCH v9 2/9] x509: Detect sm2 keys by their parameters OID Date: Thu, 25 Feb 2021 11:07:55 -0500 Message-Id: <20210225160802.2478700-3-stefanb@linux.vnet.ibm.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210225160802.2478700-1-stefanb@linux.vnet.ibm.com> References: <20210225160802.2478700-1-stefanb@linux.vnet.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.369,18.0.761 definitions=2021-02-25_09:2021-02-24,2021-02-25 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 mlxlogscore=999 malwarescore=0 spamscore=0 priorityscore=1501 mlxscore=0 adultscore=0 clxscore=1011 impostorscore=0 suspectscore=0 phishscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2102250127 Precedence: bulk List-ID: X-Mailing-List: linux-integrity@vger.kernel.org From: Stefan Berger Detect whether a key is an sm2 type of key by its OID in the parameters array rather than assuming that everything under OID_id_ecPublicKey is sm2, which is not the case. Cc: David Howells Cc: keyrings@vger.kernel.org Signed-off-by: Stefan Berger Reviewed-by: Tianjia Zhang Tested-by: Tianjia Zhang --- crypto/asymmetric_keys/x509_cert_parser.c | 12 +++++++++++- include/linux/oid_registry.h | 1 + lib/oid_registry.c | 13 +++++++++++++ 3 files changed, 25 insertions(+), 1 deletion(-) diff --git a/crypto/asymmetric_keys/x509_cert_parser.c b/crypto/asymmetric_keys/x509_cert_parser.c index 52c9b455fc7d..1621ceaf5c95 100644 --- a/crypto/asymmetric_keys/x509_cert_parser.c +++ b/crypto/asymmetric_keys/x509_cert_parser.c @@ -459,6 +459,7 @@ int x509_extract_key_data(void *context, size_t hdrlen, const void *value, size_t vlen) { struct x509_parse_context *ctx = context; + enum OID oid; ctx->key_algo = ctx->last_oid; switch (ctx->last_oid) { @@ -470,7 +471,16 @@ int x509_extract_key_data(void *context, size_t hdrlen, ctx->cert->pub->pkey_algo = "ecrdsa"; break; case OID_id_ecPublicKey: - ctx->cert->pub->pkey_algo = "sm2"; + if (parse_OID(ctx->params, ctx->params_size, &oid) != 0) + return -EBADMSG; + + switch (oid) { + case OID_sm2: + ctx->cert->pub->pkey_algo = "sm2"; + break; + default: + return -ENOPKG; + } break; default: return -ENOPKG; diff --git a/include/linux/oid_registry.h b/include/linux/oid_registry.h index b504e2f36b25..f32d91895e4d 100644 --- a/include/linux/oid_registry.h +++ b/include/linux/oid_registry.h @@ -121,6 +121,7 @@ enum OID { }; extern enum OID look_up_OID(const void *data, size_t datasize); +extern int parse_OID(const void *data, size_t datasize, enum OID *oid); extern int sprint_oid(const void *, size_t, char *, size_t); extern int sprint_OID(enum OID, char *, size_t); diff --git a/lib/oid_registry.c b/lib/oid_registry.c index f7ad43f28579..508e0b34b5f0 100644 --- a/lib/oid_registry.c +++ b/lib/oid_registry.c @@ -11,6 +11,7 @@ #include #include #include +#include #include "oid_registry_data.c" MODULE_DESCRIPTION("OID Registry"); @@ -92,6 +93,18 @@ enum OID look_up_OID(const void *data, size_t datasize) } EXPORT_SYMBOL_GPL(look_up_OID); +int parse_OID(const void *data, size_t datasize, enum OID *oid) +{ + const unsigned char *v = data; + + if (datasize < 2 || v[0] != ASN1_OID || v[1] != datasize - 2) + return -EBADMSG; + + *oid = look_up_OID(data + 2, datasize - 2); + return 0; +} +EXPORT_SYMBOL_GPL(parse_OID); + /* * sprint_OID - Print an Object Identifier into a buffer * @data: The encoded OID to print From patchwork Thu Feb 25 16:07:56 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Berger X-Patchwork-Id: 12104503 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0A573C433E0 for ; Thu, 25 Feb 2021 16:09:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B87E464F1B for ; 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Thu, 25 Feb 2021 16:08:20 GMT Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 0F80C6E050; Thu, 25 Feb 2021 16:08:20 +0000 (GMT) Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7DDF26E04C; Thu, 25 Feb 2021 16:08:19 +0000 (GMT) Received: from sbct-3.pok.ibm.com (unknown [9.47.158.153]) by b03ledav001.gho.boulder.ibm.com (Postfix) with ESMTP; Thu, 25 Feb 2021 16:08:19 +0000 (GMT) From: Stefan Berger To: keyrings@vger.kernel.org, linux-crypto@vger.kernel.org, davem@davemloft.net, herbert@gondor.apana.org.au, dhowells@redhat.com, zohar@linux.ibm.com Cc: linux-kernel@vger.kernel.org, patrick@puiterwijk.org, linux-integrity@vger.kernel.org, Stefan Berger Subject: [PATCH v9 3/9] x509: Add support for parsing x509 certs with ECDSA keys Date: Thu, 25 Feb 2021 11:07:56 -0500 Message-Id: <20210225160802.2478700-4-stefanb@linux.vnet.ibm.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210225160802.2478700-1-stefanb@linux.vnet.ibm.com> References: <20210225160802.2478700-1-stefanb@linux.vnet.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.369,18.0.761 definitions=2021-02-25_09:2021-02-24,2021-02-25 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 clxscore=1015 mlxscore=0 impostorscore=0 malwarescore=0 priorityscore=1501 suspectscore=0 adultscore=0 bulkscore=0 mlxlogscore=999 phishscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2102250127 Precedence: bulk List-ID: X-Mailing-List: linux-integrity@vger.kernel.org From: Stefan Berger This patch adds support for parsing of x509 certificates that contain ECDSA keys, such as NIST P256, that have been signed by a CA using any of the current SHA hash algorithms. Cc: David Howells Cc: keyrings@vger.kernel.org Signed-off-by: Stefan Berger --- v7->v8: - do not detect key algo using parse_OID() in public_key.c but set pkey_algo to the key type 'ecdsa-nist-p192/256' when parsing cert --- crypto/asymmetric_keys/public_key.c | 4 ++- crypto/asymmetric_keys/x509_cert_parser.c | 34 ++++++++++++++++++++++- crypto/asymmetric_keys/x509_public_key.c | 4 ++- include/linux/oid_registry.h | 2 ++ 4 files changed, 41 insertions(+), 3 deletions(-) diff --git a/crypto/asymmetric_keys/public_key.c b/crypto/asymmetric_keys/public_key.c index 788a4ba1e2e7..4fefb219bfdc 100644 --- a/crypto/asymmetric_keys/public_key.c +++ b/crypto/asymmetric_keys/public_key.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include @@ -85,7 +86,8 @@ int software_key_determine_akcipher(const char *encoding, return n >= CRYPTO_MAX_ALG_NAME ? -EINVAL : 0; } - if (strcmp(encoding, "raw") == 0) { + if (strcmp(encoding, "raw") == 0 || + strcmp(encoding, "x962") == 0) { strcpy(alg_name, pkey->pkey_algo); return 0; } diff --git a/crypto/asymmetric_keys/x509_cert_parser.c b/crypto/asymmetric_keys/x509_cert_parser.c index 1621ceaf5c95..f5d547c6dfb5 100644 --- a/crypto/asymmetric_keys/x509_cert_parser.c +++ b/crypto/asymmetric_keys/x509_cert_parser.c @@ -227,6 +227,26 @@ int x509_note_pkey_algo(void *context, size_t hdrlen, ctx->cert->sig->hash_algo = "sha224"; goto rsa_pkcs1; + case OID_id_ecdsa_with_sha1: + ctx->cert->sig->hash_algo = "sha1"; + goto ecdsa; + + case OID_id_ecdsa_with_sha224: + ctx->cert->sig->hash_algo = "sha224"; + goto ecdsa; + + case OID_id_ecdsa_with_sha256: + ctx->cert->sig->hash_algo = "sha256"; + goto ecdsa; + + case OID_id_ecdsa_with_sha384: + ctx->cert->sig->hash_algo = "sha384"; + goto ecdsa; + + case OID_id_ecdsa_with_sha512: + ctx->cert->sig->hash_algo = "sha512"; + goto ecdsa; + case OID_gost2012Signature256: ctx->cert->sig->hash_algo = "streebog256"; goto ecrdsa; @@ -255,6 +275,11 @@ int x509_note_pkey_algo(void *context, size_t hdrlen, ctx->cert->sig->encoding = "raw"; ctx->algo_oid = ctx->last_oid; return 0; +ecdsa: + ctx->cert->sig->pkey_algo = "ecdsa"; + ctx->cert->sig->encoding = "x962"; + ctx->algo_oid = ctx->last_oid; + return 0; } /* @@ -276,7 +301,8 @@ int x509_note_signature(void *context, size_t hdrlen, if (strcmp(ctx->cert->sig->pkey_algo, "rsa") == 0 || strcmp(ctx->cert->sig->pkey_algo, "ecrdsa") == 0 || - strcmp(ctx->cert->sig->pkey_algo, "sm2") == 0) { + strcmp(ctx->cert->sig->pkey_algo, "sm2") == 0 || + strcmp(ctx->cert->sig->pkey_algo, "ecdsa") == 0) { /* Discard the BIT STRING metadata */ if (vlen < 1 || *(const u8 *)value != 0) return -EBADMSG; @@ -478,6 +504,12 @@ int x509_extract_key_data(void *context, size_t hdrlen, case OID_sm2: ctx->cert->pub->pkey_algo = "sm2"; break; + case OID_id_prime192v1: + ctx->cert->pub->pkey_algo = "ecdsa-nist-p192"; + break; + case OID_id_prime256v1: + ctx->cert->pub->pkey_algo = "ecdsa-nist-p256"; + break; default: return -ENOPKG; } diff --git a/crypto/asymmetric_keys/x509_public_key.c b/crypto/asymmetric_keys/x509_public_key.c index ae450eb8be14..3d45161b271a 100644 --- a/crypto/asymmetric_keys/x509_public_key.c +++ b/crypto/asymmetric_keys/x509_public_key.c @@ -129,7 +129,9 @@ int x509_check_for_self_signed(struct x509_certificate *cert) } ret = -EKEYREJECTED; - if (strcmp(cert->pub->pkey_algo, cert->sig->pkey_algo) != 0) + if (strcmp(cert->pub->pkey_algo, cert->sig->pkey_algo) != 0 && + (strncmp(cert->pub->pkey_algo, "ecdsa-", 6) != 0 || + strcmp(cert->sig->pkey_algo, "ecdsa") != 0)) goto out; ret = public_key_verify_signature(cert->pub, cert->sig); diff --git a/include/linux/oid_registry.h b/include/linux/oid_registry.h index f32d91895e4d..3583908cf1ca 100644 --- a/include/linux/oid_registry.h +++ b/include/linux/oid_registry.h @@ -20,6 +20,8 @@ enum OID { OID_id_dsa_with_sha1, /* 1.2.840.10030.4.3 */ OID_id_dsa, /* 1.2.840.10040.4.1 */ OID_id_ecPublicKey, /* 1.2.840.10045.2.1 */ + OID_id_prime192v1, /* 1.2.840.10045.3.1.1 */ + OID_id_prime256v1, /* 1.2.840.10045.3.1.7 */ OID_id_ecdsa_with_sha1, /* 1.2.840.10045.4.1 */ OID_id_ecdsa_with_sha224, /* 1.2.840.10045.4.3.1 */ OID_id_ecdsa_with_sha256, /* 1.2.840.10045.4.3.2 */ From patchwork Thu Feb 25 16:07:57 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Berger X-Patchwork-Id: 12104501 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 30933C43333 for ; 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Thu, 25 Feb 2021 16:08:20 GMT Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id CA5C36E050; Thu, 25 Feb 2021 16:08:20 +0000 (GMT) Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2518B6E04C; Thu, 25 Feb 2021 16:08:20 +0000 (GMT) Received: from sbct-3.pok.ibm.com (unknown [9.47.158.153]) by b03ledav001.gho.boulder.ibm.com (Postfix) with ESMTP; Thu, 25 Feb 2021 16:08:20 +0000 (GMT) From: Stefan Berger To: keyrings@vger.kernel.org, linux-crypto@vger.kernel.org, davem@davemloft.net, herbert@gondor.apana.org.au, dhowells@redhat.com, zohar@linux.ibm.com Cc: linux-kernel@vger.kernel.org, patrick@puiterwijk.org, linux-integrity@vger.kernel.org, Stefan Berger , Dmitry Kasatkin , Vitaly Chikunov , Tianjia Zhang Subject: [PATCH v9 4/9] ima: Support EC keys for signature verification Date: Thu, 25 Feb 2021 11:07:57 -0500 Message-Id: <20210225160802.2478700-5-stefanb@linux.vnet.ibm.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210225160802.2478700-1-stefanb@linux.vnet.ibm.com> References: <20210225160802.2478700-1-stefanb@linux.vnet.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.369,18.0.761 definitions=2021-02-25_09:2021-02-24,2021-02-25 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 adultscore=0 lowpriorityscore=0 spamscore=0 clxscore=1011 phishscore=0 suspectscore=0 malwarescore=0 bulkscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2102250127 Precedence: bulk List-ID: X-Mailing-List: linux-integrity@vger.kernel.org From: Stefan Berger Add support for IMA signature verification for EC keys. Since SHA type of hashes can be used by RSA and ECDSA signature schemes we need to look at the key and derive from the key which signature scheme to use. Since this can be applied to all types of keys, we change the selection of the encoding type to be driven by the key's signature scheme rather than by the hash type. Cc: Dmitry Kasatkin Cc: linux-integrity@vger.kernel.org Cc: David Howells Cc: keyrings@vger.kernel.org Signed-off-by: Stefan Berger Reviewed-by: Vitaly Chikunov Reviewed-by: Tianjia Zhang Acked-by: Mimi Zohar --- v7->v8: - use strncmp to check for 'ecdsa-' to match 'ecdsa-nist-p192' and 'ecdsa-nist-p256' key types; previously they were just 'ecdsa' --- include/keys/asymmetric-type.h | 6 ++++++ security/integrity/digsig_asymmetric.c | 30 ++++++++++++-------------- 2 files changed, 20 insertions(+), 16 deletions(-) diff --git a/include/keys/asymmetric-type.h b/include/keys/asymmetric-type.h index a29d3ff2e7e8..c432fdb8547f 100644 --- a/include/keys/asymmetric-type.h +++ b/include/keys/asymmetric-type.h @@ -72,6 +72,12 @@ const struct asymmetric_key_ids *asymmetric_key_ids(const struct key *key) return key->payload.data[asym_key_ids]; } +static inline +const struct public_key *asymmetric_key_public_key(const struct key *key) +{ + return key->payload.data[asym_crypto]; +} + extern struct key *find_asymmetric_key(struct key *keyring, const struct asymmetric_key_id *id_0, const struct asymmetric_key_id *id_1, diff --git a/security/integrity/digsig_asymmetric.c b/security/integrity/digsig_asymmetric.c index a662024b4c70..23240d793b07 100644 --- a/security/integrity/digsig_asymmetric.c +++ b/security/integrity/digsig_asymmetric.c @@ -84,6 +84,7 @@ int asymmetric_verify(struct key *keyring, const char *sig, { struct public_key_signature pks; struct signature_v2_hdr *hdr = (struct signature_v2_hdr *)sig; + const struct public_key *pk; struct key *key; int ret; @@ -105,23 +106,20 @@ int asymmetric_verify(struct key *keyring, const char *sig, memset(&pks, 0, sizeof(pks)); pks.hash_algo = hash_algo_name[hdr->hash_algo]; - switch (hdr->hash_algo) { - case HASH_ALGO_STREEBOG_256: - case HASH_ALGO_STREEBOG_512: - /* EC-RDSA and Streebog should go together. */ - pks.pkey_algo = "ecrdsa"; - pks.encoding = "raw"; - break; - case HASH_ALGO_SM3_256: - /* SM2 and SM3 should go together. */ - pks.pkey_algo = "sm2"; - pks.encoding = "raw"; - break; - default: - pks.pkey_algo = "rsa"; + + pk = asymmetric_key_public_key(key); + pks.pkey_algo = pk->pkey_algo; + if (!strcmp(pk->pkey_algo, "rsa")) pks.encoding = "pkcs1"; - break; - } + else if (!strncmp(pk->pkey_algo, "ecdsa-", 6)) + /* edcsa-nist-p192 etc. */ + pks.encoding = "x962"; + else if (!strcmp(pk->pkey_algo, "ecrdsa") || + !strcmp(pk->pkey_algo, "sm2")) + pks.encoding = "raw"; + else + return -ENOPKG; + pks.digest = (u8 *)data; pks.digest_size = datalen; pks.s = hdr->sig; From patchwork Thu Feb 25 16:07:58 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Berger X-Patchwork-Id: 12104507 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D0043C433E6 for ; Thu, 25 Feb 2021 16:10:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8EB0264F0D for ; Thu, 25 Feb 2021 16:10:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233070AbhBYQKU (ORCPT ); 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Thu, 25 Feb 2021 16:08:21 GMT Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7ACD56E052; Thu, 25 Feb 2021 16:08:21 +0000 (GMT) Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id DEED36E04C; Thu, 25 Feb 2021 16:08:20 +0000 (GMT) Received: from sbct-3.pok.ibm.com (unknown [9.47.158.153]) by b03ledav001.gho.boulder.ibm.com (Postfix) with ESMTP; Thu, 25 Feb 2021 16:08:20 +0000 (GMT) From: Stefan Berger To: keyrings@vger.kernel.org, linux-crypto@vger.kernel.org, davem@davemloft.net, herbert@gondor.apana.org.au, dhowells@redhat.com, zohar@linux.ibm.com Cc: linux-kernel@vger.kernel.org, patrick@puiterwijk.org, linux-integrity@vger.kernel.org, Saulo Alessandre , Stefan Berger Subject: [PATCH v9 5/9] x509: Add OID for NIST P384 and extend parser for it Date: Thu, 25 Feb 2021 11:07:58 -0500 Message-Id: <20210225160802.2478700-6-stefanb@linux.vnet.ibm.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210225160802.2478700-1-stefanb@linux.vnet.ibm.com> References: <20210225160802.2478700-1-stefanb@linux.vnet.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.369,18.0.761 definitions=2021-02-25_09:2021-02-24,2021-02-25 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 mlxscore=0 impostorscore=0 adultscore=0 clxscore=1015 mlxlogscore=999 malwarescore=0 lowpriorityscore=0 spamscore=0 priorityscore=1501 bulkscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2102250127 Precedence: bulk List-ID: X-Mailing-List: linux-integrity@vger.kernel.org From: Saulo Alessandre * crypto/asymmetric_keys/x509_cert_parser.c - prepare x509 parser to load nist_secp384r1 * include/linux/oid_registry.h - add OID_id_secp384r1 Signed-off-by: Saulo Alessandre Tested-by: Stefan Berger --- crypto/asymmetric_keys/x509_cert_parser.c | 3 +++ include/linux/oid_registry.h | 1 + 2 files changed, 4 insertions(+) diff --git a/crypto/asymmetric_keys/x509_cert_parser.c b/crypto/asymmetric_keys/x509_cert_parser.c index f5d547c6dfb5..526c6a407e07 100644 --- a/crypto/asymmetric_keys/x509_cert_parser.c +++ b/crypto/asymmetric_keys/x509_cert_parser.c @@ -510,6 +510,9 @@ int x509_extract_key_data(void *context, size_t hdrlen, case OID_id_prime256v1: ctx->cert->pub->pkey_algo = "ecdsa-nist-p256"; break; + case OID_id_secp384r1: + ctx->cert->pub->pkey_algo = "ecdsa-nist-p384"; + break; default: return -ENOPKG; } diff --git a/include/linux/oid_registry.h b/include/linux/oid_registry.h index 3583908cf1ca..d656450dfc66 100644 --- a/include/linux/oid_registry.h +++ b/include/linux/oid_registry.h @@ -64,6 +64,7 @@ enum OID { OID_certAuthInfoAccess, /* 1.3.6.1.5.5.7.1.1 */ OID_sha1, /* 1.3.14.3.2.26 */ + OID_id_secp384r1, /* 1.3.132.0.34 */ OID_sha256, /* 2.16.840.1.101.3.4.2.1 */ OID_sha384, /* 2.16.840.1.101.3.4.2.2 */ OID_sha512, /* 2.16.840.1.101.3.4.2.3 */ From patchwork Thu Feb 25 16:07:59 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Berger X-Patchwork-Id: 12104509 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 07F88C4332E for ; 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Thu, 25 Feb 2021 16:08:22 GMT Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2C3B36E052; Thu, 25 Feb 2021 16:08:22 +0000 (GMT) Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 8FB8C6E04C; Thu, 25 Feb 2021 16:08:21 +0000 (GMT) Received: from sbct-3.pok.ibm.com (unknown [9.47.158.153]) by b03ledav001.gho.boulder.ibm.com (Postfix) with ESMTP; Thu, 25 Feb 2021 16:08:21 +0000 (GMT) From: Stefan Berger To: keyrings@vger.kernel.org, linux-crypto@vger.kernel.org, davem@davemloft.net, herbert@gondor.apana.org.au, dhowells@redhat.com, zohar@linux.ibm.com Cc: linux-kernel@vger.kernel.org, patrick@puiterwijk.org, linux-integrity@vger.kernel.org, Saulo Alessandre , Stefan Berger Subject: [PATCH v9 6/9] crypto: Add NIST P384 curve parameters Date: Thu, 25 Feb 2021 11:07:59 -0500 Message-Id: <20210225160802.2478700-7-stefanb@linux.vnet.ibm.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210225160802.2478700-1-stefanb@linux.vnet.ibm.com> References: <20210225160802.2478700-1-stefanb@linux.vnet.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.369,18.0.761 definitions=2021-02-25_09:2021-02-24,2021-02-25 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 priorityscore=1501 malwarescore=0 mlxlogscore=999 bulkscore=0 clxscore=1011 suspectscore=0 impostorscore=0 mlxscore=0 phishscore=0 spamscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2102250127 Precedence: bulk List-ID: X-Mailing-List: linux-integrity@vger.kernel.org From: Saulo Alessandre * crypto/ecc_curve_defs.h - add nist_p384 params * include/crypto/ecdh.h - add ECC_CURVE_NIST_P384 Signed-off-by: Saulo Alessandre Tested-by: Stefan Berger --- crypto/ecc_curve_defs.h | 32 ++++++++++++++++++++++++++++++++ include/crypto/ecdh.h | 1 + 2 files changed, 33 insertions(+) diff --git a/crypto/ecc_curve_defs.h b/crypto/ecc_curve_defs.h index 69be6c7d228f..b327732f6ef5 100644 --- a/crypto/ecc_curve_defs.h +++ b/crypto/ecc_curve_defs.h @@ -54,4 +54,36 @@ static struct ecc_curve nist_p256 = { .b = nist_p256_b }; +/* NIST P-384 */ +static u64 nist_p384_g_x[] = { 0x3A545E3872760AB7ull, 0x5502F25DBF55296Cull, + 0x59F741E082542A38ull, 0x6E1D3B628BA79B98ull, + 0x8Eb1C71EF320AD74ull, 0xAA87CA22BE8B0537ull }; +static u64 nist_p384_g_y[] = { 0x7A431D7C90EA0E5Full, 0x0A60B1CE1D7E819Dull, + 0xE9DA3113B5F0B8C0ull, 0xF8F41DBD289A147Cull, + 0x5D9E98BF9292DC29ull, 0x3617DE4A96262C6Full }; +static u64 nist_p384_p[] = { 0x00000000FFFFFFFFull, 0xFFFFFFFF00000000ull, + 0xFFFFFFFFFFFFFFFEull, 0xFFFFFFFFFFFFFFFFull, + 0xFFFFFFFFFFFFFFFFull, 0xFFFFFFFFFFFFFFFFull }; +static u64 nist_p384_n[] = { 0xECEC196ACCC52973ull, 0x581A0DB248B0A77Aull, + 0xC7634D81F4372DDFull, 0xFFFFFFFFFFFFFFFFull, + 0xFFFFFFFFFFFFFFFFull, 0xFFFFFFFFFFFFFFFFull }; +static u64 nist_p384_a[] = { 0x00000000FFFFFFFCull, 0xFFFFFFFF00000000ull, + 0xFFFFFFFFFFFFFFFEull, 0xFFFFFFFFFFFFFFFFull, + 0xFFFFFFFFFFFFFFFFull, 0xFFFFFFFFFFFFFFFFull }; +static u64 nist_p384_b[] = { 0x2a85c8edd3ec2aefull, 0xc656398d8a2ed19dull, + 0x0314088f5013875aull, 0x181d9c6efe814112ull, + 0x988e056be3f82d19ull, 0xb3312fa7e23ee7e4ull }; +static struct ecc_curve nist_p384 = { + .name = "nist_384", + .g = { + .x = nist_p384_g_x, + .y = nist_p384_g_y, + .ndigits = 6, + }, + .p = nist_p384_p, + .n = nist_p384_n, + .a = nist_p384_a, + .b = nist_p384_b +}; + #endif diff --git a/include/crypto/ecdh.h b/include/crypto/ecdh.h index a5b805b5526d..e4ba1de961e4 100644 --- a/include/crypto/ecdh.h +++ b/include/crypto/ecdh.h @@ -25,6 +25,7 @@ /* Curves IDs */ #define ECC_CURVE_NIST_P192 0x0001 #define ECC_CURVE_NIST_P256 0x0002 +#define ECC_CURVE_NIST_P384 0x0003 /** * struct ecdh - define an ECDH private key From patchwork Thu Feb 25 16:08:00 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Stefan Berger X-Patchwork-Id: 12104515 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 93ABCC433E9 for ; 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Thu, 25 Feb 2021 16:08:23 GMT Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id DD0AC6E053; Thu, 25 Feb 2021 16:08:22 +0000 (GMT) Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 418EC6E04C; Thu, 25 Feb 2021 16:08:22 +0000 (GMT) Received: from sbct-3.pok.ibm.com (unknown [9.47.158.153]) by b03ledav001.gho.boulder.ibm.com (Postfix) with ESMTP; Thu, 25 Feb 2021 16:08:22 +0000 (GMT) From: Stefan Berger To: keyrings@vger.kernel.org, linux-crypto@vger.kernel.org, davem@davemloft.net, herbert@gondor.apana.org.au, dhowells@redhat.com, zohar@linux.ibm.com Cc: linux-kernel@vger.kernel.org, patrick@puiterwijk.org, linux-integrity@vger.kernel.org, Saulo Alessandre , Stefan Berger Subject: [PATCH v9 7/9] crypto: Add math to support fast NIST P384 Date: Thu, 25 Feb 2021 11:08:00 -0500 Message-Id: <20210225160802.2478700-8-stefanb@linux.vnet.ibm.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210225160802.2478700-1-stefanb@linux.vnet.ibm.com> References: <20210225160802.2478700-1-stefanb@linux.vnet.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.369,18.0.761 definitions=2021-02-25_09:2021-02-24,2021-02-25 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 mlxlogscore=999 malwarescore=0 spamscore=0 priorityscore=1501 mlxscore=0 adultscore=0 clxscore=1015 impostorscore=0 suspectscore=0 phishscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2102250127 Precedence: bulk List-ID: X-Mailing-List: linux-integrity@vger.kernel.org From: Saulo Alessandre * crypto/ecc.c - change ecc_get_curve to accept nist_p384 - add vli_mmod_fast_384 - change some routines to pass ecc_curve forward until vli_mmod_fast * crypto/ecc.h - add ECC_CURVE_NIST_P384_DIGITS - change ECC_MAX_DIGITS to P384 size Signed-off-by: Saulo Alessandre Tested-by: Stefan Berger --- crypto/ecc.c | 268 +++++++++++++++++++++++++++++++++++++-------------- crypto/ecc.h | 3 +- 2 files changed, 196 insertions(+), 75 deletions(-) diff --git a/crypto/ecc.c b/crypto/ecc.c index 25e79fd70566..c125576cda6b 100644 --- a/crypto/ecc.c +++ b/crypto/ecc.c @@ -50,6 +50,8 @@ const struct ecc_curve *ecc_get_curve(unsigned int curve_id) return fips_enabled ? NULL : &nist_p192; case ECC_CURVE_NIST_P256: return &nist_p256; + case ECC_CURVE_NIST_P384: + return &nist_p384; default: return NULL; } @@ -776,18 +778,133 @@ static void vli_mmod_fast_256(u64 *result, const u64 *product, } } +#define SL32OR32(x32, y32) (((u64)x32 << 32) | y32) +#define AND64H(x64) (x64 & 0xffFFffFF00000000ull) +#define AND64L(x64) (x64 & 0x00000000ffFFffFFull) + +/* Computes result = product % curve_prime + * from "Mathematical routines for the NIST prime elliptic curves" + */ +static void vli_mmod_fast_384(u64 *result, const u64 *product, + const u64 *curve_prime, u64 *tmp) +{ + int carry; + const unsigned int ndigits = 6; + + /* t */ + vli_set(result, product, ndigits); + + /* s1 */ + tmp[0] = 0; // 0 || 0 + tmp[1] = 0; // 0 || 0 + tmp[2] = SL32OR32(product[11], (product[10]>>32)); //a22||a21 + tmp[3] = product[11]>>32; // 0 ||a23 + tmp[4] = 0; // 0 || 0 + tmp[5] = 0; // 0 || 0 + carry = vli_lshift(tmp, tmp, 1, ndigits); + carry += vli_add(result, result, tmp, ndigits); + + /* s2 */ + tmp[0] = product[6]; //a13||a12 + tmp[1] = product[7]; //a15||a14 + tmp[2] = product[8]; //a17||a16 + tmp[3] = product[9]; //a19||a18 + tmp[4] = product[10]; //a21||a20 + tmp[5] = product[11]; //a23||a22 + carry += vli_add(result, result, tmp, ndigits); + + /* s3 */ + tmp[0] = SL32OR32(product[11], (product[10]>>32)); //a22||a21 + tmp[1] = SL32OR32(product[6], (product[11]>>32)); //a12||a23 + tmp[2] = SL32OR32(product[7], (product[6])>>32); //a14||a13 + tmp[3] = SL32OR32(product[8], (product[7]>>32)); //a16||a15 + tmp[4] = SL32OR32(product[9], (product[8]>>32)); //a18||a17 + tmp[5] = SL32OR32(product[10], (product[9]>>32)); //a20||a19 + carry += vli_add(result, result, tmp, ndigits); + + /* s4 */ + tmp[0] = AND64H(product[11]); //a23|| 0 + tmp[1] = (product[10]<<32); //a20|| 0 + tmp[2] = product[6]; //a13||a12 + tmp[3] = product[7]; //a15||a14 + tmp[4] = product[8]; //a17||a16 + tmp[5] = product[9]; //a19||a18 + carry += vli_add(result, result, tmp, ndigits); + + /* s5 */ + tmp[0] = 0; // 0|| 0 + tmp[1] = 0; // 0|| 0 + tmp[2] = product[10]; //a21||a20 + tmp[3] = product[11]; //a23||a22 + tmp[4] = 0; // 0|| 0 + tmp[5] = 0; // 0|| 0 + carry += vli_add(result, result, tmp, ndigits); + + /* s6 */ + tmp[0] = AND64L(product[10]); // 0 ||a20 + tmp[1] = AND64H(product[10]); //a21|| 0 + tmp[2] = product[11]; //a23||a22 + tmp[3] = 0; // 0 || 0 + tmp[4] = 0; // 0 || 0 + tmp[5] = 0; // 0 || 0 + carry += vli_add(result, result, tmp, ndigits); + + /* d1 */ + tmp[0] = SL32OR32(product[6], (product[11]>>32)); //a12||a23 + tmp[1] = SL32OR32(product[7], (product[6]>>32)); //a14||a13 + tmp[2] = SL32OR32(product[8], (product[7]>>32)); //a16||a15 + tmp[3] = SL32OR32(product[9], (product[8]>>32)); //a18||a17 + tmp[4] = SL32OR32(product[10], (product[9]>>32)); //a20||a19 + tmp[5] = SL32OR32(product[11], (product[10]>>32)); //a22||a21 + carry -= vli_sub(result, result, tmp, ndigits); + + /* d2 */ + tmp[0] = (product[10]<<32); //a20|| 0 + tmp[1] = SL32OR32(product[11], (product[10]>>32)); //a22||a21 + tmp[2] = (product[11]>>32); // 0 ||a23 + tmp[3] = 0; // 0 || 0 + tmp[4] = 0; // 0 || 0 + tmp[5] = 0; // 0 || 0 + carry -= vli_sub(result, result, tmp, ndigits); + + /* d3 */ + tmp[0] = 0; // 0 || 0 + tmp[1] = AND64H(product[11]); //a23|| 0 + tmp[2] = product[11]>>32; // 0 ||a23 + tmp[3] = 0; // 0 || 0 + tmp[4] = 0; // 0 || 0 + tmp[5] = 0; // 0 || 0 + carry -= vli_sub(result, result, tmp, ndigits); + + if (carry < 0) { + do { + carry += vli_add(result, result, curve_prime, ndigits); + } while (carry < 0); + } else { + while (carry || vli_cmp(curve_prime, result, ndigits) != 1) + carry -= vli_sub(result, result, curve_prime, ndigits); + } + +} + +#undef SL32OR32 +#undef AND64H +#undef AND64L + /* Computes result = product % curve_prime for different curve_primes. * * Note that curve_primes are distinguished just by heuristic check and * not by complete conformance check. */ static bool vli_mmod_fast(u64 *result, u64 *product, - const u64 *curve_prime, unsigned int ndigits) + const struct ecc_curve *curve) { u64 tmp[2 * ECC_MAX_DIGITS]; + const u64 *curve_prime = curve->p; + const unsigned int ndigits = curve->g.ndigits; - /* Currently, both NIST primes have -1 in lowest qword. */ - if (curve_prime[0] != -1ull) { + /* Currently, all NIST have name nist_.* */ + if (strncmp(curve->name, "nist_", 5) != 0) { /* Try to handle Pseudo-Marsenne primes. */ if (curve_prime[ndigits - 1] == -1ull) { vli_mmod_special(result, product, curve_prime, @@ -810,6 +927,9 @@ static bool vli_mmod_fast(u64 *result, u64 *product, case 4: vli_mmod_fast_256(result, product, curve_prime, tmp); break; + case 6: + vli_mmod_fast_384(result, product, curve_prime, tmp); + break; default: pr_err_ratelimited("ecc: unsupported digits size!\n"); return false; @@ -833,22 +953,22 @@ EXPORT_SYMBOL(vli_mod_mult_slow); /* Computes result = (left * right) % curve_prime. */ static void vli_mod_mult_fast(u64 *result, const u64 *left, const u64 *right, - const u64 *curve_prime, unsigned int ndigits) + const struct ecc_curve *curve) { u64 product[2 * ECC_MAX_DIGITS]; - vli_mult(product, left, right, ndigits); - vli_mmod_fast(result, product, curve_prime, ndigits); + vli_mult(product, left, right, curve->g.ndigits); + vli_mmod_fast(result, product, curve); } /* Computes result = left^2 % curve_prime. */ static void vli_mod_square_fast(u64 *result, const u64 *left, - const u64 *curve_prime, unsigned int ndigits) + const struct ecc_curve *curve) { u64 product[2 * ECC_MAX_DIGITS]; - vli_square(product, left, ndigits); - vli_mmod_fast(result, product, curve_prime, ndigits); + vli_square(product, left, curve->g.ndigits); + vli_mmod_fast(result, product, curve); } #define EVEN(vli) (!(vli[0] & 1)) @@ -946,25 +1066,27 @@ static bool ecc_point_is_zero(const struct ecc_point *point) /* Double in place */ static void ecc_point_double_jacobian(u64 *x1, u64 *y1, u64 *z1, - u64 *curve_prime, unsigned int ndigits) + const struct ecc_curve *curve) { /* t1 = x, t2 = y, t3 = z */ u64 t4[ECC_MAX_DIGITS]; u64 t5[ECC_MAX_DIGITS]; + const u64 *curve_prime = curve->p; + const unsigned int ndigits = curve->g.ndigits; if (vli_is_zero(z1, ndigits)) return; /* t4 = y1^2 */ - vli_mod_square_fast(t4, y1, curve_prime, ndigits); + vli_mod_square_fast(t4, y1, curve); /* t5 = x1*y1^2 = A */ - vli_mod_mult_fast(t5, x1, t4, curve_prime, ndigits); + vli_mod_mult_fast(t5, x1, t4, curve); /* t4 = y1^4 */ - vli_mod_square_fast(t4, t4, curve_prime, ndigits); + vli_mod_square_fast(t4, t4, curve); /* t2 = y1*z1 = z3 */ - vli_mod_mult_fast(y1, y1, z1, curve_prime, ndigits); + vli_mod_mult_fast(y1, y1, z1, curve); /* t3 = z1^2 */ - vli_mod_square_fast(z1, z1, curve_prime, ndigits); + vli_mod_square_fast(z1, z1, curve); /* t1 = x1 + z1^2 */ vli_mod_add(x1, x1, z1, curve_prime, ndigits); @@ -973,7 +1095,7 @@ static void ecc_point_double_jacobian(u64 *x1, u64 *y1, u64 *z1, /* t3 = x1 - z1^2 */ vli_mod_sub(z1, x1, z1, curve_prime, ndigits); /* t1 = x1^2 - z1^4 */ - vli_mod_mult_fast(x1, x1, z1, curve_prime, ndigits); + vli_mod_mult_fast(x1, x1, z1, curve); /* t3 = 2*(x1^2 - z1^4) */ vli_mod_add(z1, x1, x1, curve_prime, ndigits); @@ -990,7 +1112,7 @@ static void ecc_point_double_jacobian(u64 *x1, u64 *y1, u64 *z1, /* t1 = 3/2*(x1^2 - z1^4) = B */ /* t3 = B^2 */ - vli_mod_square_fast(z1, x1, curve_prime, ndigits); + vli_mod_square_fast(z1, x1, curve); /* t3 = B^2 - A */ vli_mod_sub(z1, z1, t5, curve_prime, ndigits); /* t3 = B^2 - 2A = x3 */ @@ -998,7 +1120,7 @@ static void ecc_point_double_jacobian(u64 *x1, u64 *y1, u64 *z1, /* t5 = A - x3 */ vli_mod_sub(t5, t5, z1, curve_prime, ndigits); /* t1 = B * (A - x3) */ - vli_mod_mult_fast(x1, x1, t5, curve_prime, ndigits); + vli_mod_mult_fast(x1, x1, t5, curve); /* t4 = B * (A - x3) - y1^4 = y3 */ vli_mod_sub(t4, x1, t4, curve_prime, ndigits); @@ -1008,23 +1130,22 @@ static void ecc_point_double_jacobian(u64 *x1, u64 *y1, u64 *z1, } /* Modify (x1, y1) => (x1 * z^2, y1 * z^3) */ -static void apply_z(u64 *x1, u64 *y1, u64 *z, u64 *curve_prime, - unsigned int ndigits) +static void apply_z(u64 *x1, u64 *y1, u64 *z, const struct ecc_curve *curve) { u64 t1[ECC_MAX_DIGITS]; - vli_mod_square_fast(t1, z, curve_prime, ndigits); /* z^2 */ - vli_mod_mult_fast(x1, x1, t1, curve_prime, ndigits); /* x1 * z^2 */ - vli_mod_mult_fast(t1, t1, z, curve_prime, ndigits); /* z^3 */ - vli_mod_mult_fast(y1, y1, t1, curve_prime, ndigits); /* y1 * z^3 */ + vli_mod_square_fast(t1, z, curve); /* z^2 */ + vli_mod_mult_fast(x1, x1, t1, curve); /* x1 * z^2 */ + vli_mod_mult_fast(t1, t1, z, curve); /* z^3 */ + vli_mod_mult_fast(y1, y1, t1, curve); /* y1 * z^3 */ } /* P = (x1, y1) => 2P, (x2, y2) => P' */ static void xycz_initial_double(u64 *x1, u64 *y1, u64 *x2, u64 *y2, - u64 *p_initial_z, u64 *curve_prime, - unsigned int ndigits) + u64 *p_initial_z, const struct ecc_curve *curve) { u64 z[ECC_MAX_DIGITS]; + const unsigned int ndigits = curve->g.ndigits; vli_set(x2, x1, ndigits); vli_set(y2, y1, ndigits); @@ -1035,35 +1156,37 @@ static void xycz_initial_double(u64 *x1, u64 *y1, u64 *x2, u64 *y2, if (p_initial_z) vli_set(z, p_initial_z, ndigits); - apply_z(x1, y1, z, curve_prime, ndigits); + apply_z(x1, y1, z, curve); - ecc_point_double_jacobian(x1, y1, z, curve_prime, ndigits); + ecc_point_double_jacobian(x1, y1, z, curve); - apply_z(x2, y2, z, curve_prime, ndigits); + apply_z(x2, y2, z, curve); } /* Input P = (x1, y1, Z), Q = (x2, y2, Z) * Output P' = (x1', y1', Z3), P + Q = (x3, y3, Z3) * or P => P', Q => P + Q */ -static void xycz_add(u64 *x1, u64 *y1, u64 *x2, u64 *y2, u64 *curve_prime, - unsigned int ndigits) +static void xycz_add(u64 *x1, u64 *y1, u64 *x2, u64 *y2, + const struct ecc_curve *curve) { /* t1 = X1, t2 = Y1, t3 = X2, t4 = Y2 */ u64 t5[ECC_MAX_DIGITS]; + const u64 *curve_prime = curve->p; + const unsigned int ndigits = curve->g.ndigits; /* t5 = x2 - x1 */ vli_mod_sub(t5, x2, x1, curve_prime, ndigits); /* t5 = (x2 - x1)^2 = A */ - vli_mod_square_fast(t5, t5, curve_prime, ndigits); + vli_mod_square_fast(t5, t5, curve); /* t1 = x1*A = B */ - vli_mod_mult_fast(x1, x1, t5, curve_prime, ndigits); + vli_mod_mult_fast(x1, x1, t5, curve); /* t3 = x2*A = C */ - vli_mod_mult_fast(x2, x2, t5, curve_prime, ndigits); + vli_mod_mult_fast(x2, x2, t5, curve); /* t4 = y2 - y1 */ vli_mod_sub(y2, y2, y1, curve_prime, ndigits); /* t5 = (y2 - y1)^2 = D */ - vli_mod_square_fast(t5, y2, curve_prime, ndigits); + vli_mod_square_fast(t5, y2, curve); /* t5 = D - B */ vli_mod_sub(t5, t5, x1, curve_prime, ndigits); @@ -1072,11 +1195,11 @@ static void xycz_add(u64 *x1, u64 *y1, u64 *x2, u64 *y2, u64 *curve_prime, /* t3 = C - B */ vli_mod_sub(x2, x2, x1, curve_prime, ndigits); /* t2 = y1*(C - B) */ - vli_mod_mult_fast(y1, y1, x2, curve_prime, ndigits); + vli_mod_mult_fast(y1, y1, x2, curve); /* t3 = B - x3 */ vli_mod_sub(x2, x1, t5, curve_prime, ndigits); /* t4 = (y2 - y1)*(B - x3) */ - vli_mod_mult_fast(y2, y2, x2, curve_prime, ndigits); + vli_mod_mult_fast(y2, y2, x2, curve); /* t4 = y3 */ vli_mod_sub(y2, y2, y1, curve_prime, ndigits); @@ -1087,22 +1210,24 @@ static void xycz_add(u64 *x1, u64 *y1, u64 *x2, u64 *y2, u64 *curve_prime, * Output P + Q = (x3, y3, Z3), P - Q = (x3', y3', Z3) * or P => P - Q, Q => P + Q */ -static void xycz_add_c(u64 *x1, u64 *y1, u64 *x2, u64 *y2, u64 *curve_prime, - unsigned int ndigits) +static void xycz_add_c(u64 *x1, u64 *y1, u64 *x2, u64 *y2, + const struct ecc_curve *curve) { /* t1 = X1, t2 = Y1, t3 = X2, t4 = Y2 */ u64 t5[ECC_MAX_DIGITS]; u64 t6[ECC_MAX_DIGITS]; u64 t7[ECC_MAX_DIGITS]; + const u64 *curve_prime = curve->p; + const unsigned int ndigits = curve->g.ndigits; /* t5 = x2 - x1 */ vli_mod_sub(t5, x2, x1, curve_prime, ndigits); /* t5 = (x2 - x1)^2 = A */ - vli_mod_square_fast(t5, t5, curve_prime, ndigits); + vli_mod_square_fast(t5, t5, curve); /* t1 = x1*A = B */ - vli_mod_mult_fast(x1, x1, t5, curve_prime, ndigits); + vli_mod_mult_fast(x1, x1, t5, curve); /* t3 = x2*A = C */ - vli_mod_mult_fast(x2, x2, t5, curve_prime, ndigits); + vli_mod_mult_fast(x2, x2, t5, curve); /* t4 = y2 + y1 */ vli_mod_add(t5, y2, y1, curve_prime, ndigits); /* t4 = y2 - y1 */ @@ -1111,29 +1236,29 @@ static void xycz_add_c(u64 *x1, u64 *y1, u64 *x2, u64 *y2, u64 *curve_prime, /* t6 = C - B */ vli_mod_sub(t6, x2, x1, curve_prime, ndigits); /* t2 = y1 * (C - B) */ - vli_mod_mult_fast(y1, y1, t6, curve_prime, ndigits); + vli_mod_mult_fast(y1, y1, t6, curve); /* t6 = B + C */ vli_mod_add(t6, x1, x2, curve_prime, ndigits); /* t3 = (y2 - y1)^2 */ - vli_mod_square_fast(x2, y2, curve_prime, ndigits); + vli_mod_square_fast(x2, y2, curve); /* t3 = x3 */ vli_mod_sub(x2, x2, t6, curve_prime, ndigits); /* t7 = B - x3 */ vli_mod_sub(t7, x1, x2, curve_prime, ndigits); /* t4 = (y2 - y1)*(B - x3) */ - vli_mod_mult_fast(y2, y2, t7, curve_prime, ndigits); + vli_mod_mult_fast(y2, y2, t7, curve); /* t4 = y3 */ vli_mod_sub(y2, y2, y1, curve_prime, ndigits); /* t7 = (y2 + y1)^2 = F */ - vli_mod_square_fast(t7, t5, curve_prime, ndigits); + vli_mod_square_fast(t7, t5, curve); /* t7 = x3' */ vli_mod_sub(t7, t7, t6, curve_prime, ndigits); /* t6 = x3' - B */ vli_mod_sub(t6, t7, x1, curve_prime, ndigits); /* t6 = (y2 + y1)*(x3' - B) */ - vli_mod_mult_fast(t6, t6, t5, curve_prime, ndigits); + vli_mod_mult_fast(t6, t6, t5, curve); /* t2 = y3' */ vli_mod_sub(y1, t6, y1, curve_prime, ndigits); @@ -1163,41 +1288,37 @@ static void ecc_point_mult(struct ecc_point *result, vli_set(rx[1], point->x, ndigits); vli_set(ry[1], point->y, ndigits); - xycz_initial_double(rx[1], ry[1], rx[0], ry[0], initial_z, curve_prime, - ndigits); + xycz_initial_double(rx[1], ry[1], rx[0], ry[0], initial_z, curve); for (i = num_bits - 2; i > 0; i--) { nb = !vli_test_bit(scalar, i); - xycz_add_c(rx[1 - nb], ry[1 - nb], rx[nb], ry[nb], curve_prime, - ndigits); - xycz_add(rx[nb], ry[nb], rx[1 - nb], ry[1 - nb], curve_prime, - ndigits); + xycz_add_c(rx[1 - nb], ry[1 - nb], rx[nb], ry[nb], curve); + xycz_add(rx[nb], ry[nb], rx[1 - nb], ry[1 - nb], curve); } nb = !vli_test_bit(scalar, 0); - xycz_add_c(rx[1 - nb], ry[1 - nb], rx[nb], ry[nb], curve_prime, - ndigits); + xycz_add_c(rx[1 - nb], ry[1 - nb], rx[nb], ry[nb], curve); /* Find final 1/Z value. */ /* X1 - X0 */ vli_mod_sub(z, rx[1], rx[0], curve_prime, ndigits); /* Yb * (X1 - X0) */ - vli_mod_mult_fast(z, z, ry[1 - nb], curve_prime, ndigits); + vli_mod_mult_fast(z, z, ry[1 - nb], curve); /* xP * Yb * (X1 - X0) */ - vli_mod_mult_fast(z, z, point->x, curve_prime, ndigits); + vli_mod_mult_fast(z, z, point->x, curve); /* 1 / (xP * Yb * (X1 - X0)) */ vli_mod_inv(z, z, curve_prime, point->ndigits); /* yP / (xP * Yb * (X1 - X0)) */ - vli_mod_mult_fast(z, z, point->y, curve_prime, ndigits); + vli_mod_mult_fast(z, z, point->y, curve); /* Xb * yP / (xP * Yb * (X1 - X0)) */ - vli_mod_mult_fast(z, z, rx[1 - nb], curve_prime, ndigits); + vli_mod_mult_fast(z, z, rx[1 - nb], curve); /* End 1/Z calculation */ - xycz_add(rx[nb], ry[nb], rx[1 - nb], ry[1 - nb], curve_prime, ndigits); + xycz_add(rx[nb], ry[nb], rx[1 - nb], ry[1 - nb], curve); - apply_z(rx[0], ry[0], z, curve_prime, ndigits); + apply_z(rx[0], ry[0], z, curve); vli_set(result->x, rx[0], ndigits); vli_set(result->y, ry[0], ndigits); @@ -1218,9 +1339,9 @@ static void ecc_point_add(const struct ecc_point *result, vli_mod_sub(z, result->x, p->x, curve->p, ndigits); vli_set(px, p->x, ndigits); vli_set(py, p->y, ndigits); - xycz_add(px, py, result->x, result->y, curve->p, ndigits); + xycz_add(px, py, result->x, result->y, curve); vli_mod_inv(z, z, curve->p, ndigits); - apply_z(result->x, result->y, z, curve->p, ndigits); + apply_z(result->x, result->y, z, curve); } /* Computes R = u1P + u2Q mod p using Shamir's trick. @@ -1249,8 +1370,7 @@ void ecc_point_mult_shamir(const struct ecc_point *result, points[2] = q; points[3] = ∑ - num_bits = max(vli_num_bits(u1, ndigits), - vli_num_bits(u2, ndigits)); + num_bits = max(vli_num_bits(u1, ndigits), vli_num_bits(u2, ndigits)); i = num_bits - 1; idx = (!!vli_test_bit(u1, i)) | ((!!vli_test_bit(u2, i)) << 1); point = points[idx]; @@ -1261,7 +1381,7 @@ void ecc_point_mult_shamir(const struct ecc_point *result, z[0] = 1; for (--i; i >= 0; i--) { - ecc_point_double_jacobian(rx, ry, z, curve->p, ndigits); + ecc_point_double_jacobian(rx, ry, z, curve); idx = (!!vli_test_bit(u1, i)) | ((!!vli_test_bit(u2, i)) << 1); point = points[idx]; if (point) { @@ -1271,14 +1391,14 @@ void ecc_point_mult_shamir(const struct ecc_point *result, vli_set(tx, point->x, ndigits); vli_set(ty, point->y, ndigits); - apply_z(tx, ty, z, curve->p, ndigits); + apply_z(tx, ty, z, curve); vli_mod_sub(tz, rx, tx, curve->p, ndigits); - xycz_add(tx, ty, rx, ry, curve->p, ndigits); - vli_mod_mult_fast(z, z, tz, curve->p, ndigits); + xycz_add(tx, ty, rx, ry, curve); + vli_mod_mult_fast(z, z, tz, curve); } } vli_mod_inv(z, z, curve->p, ndigits); - apply_z(rx, ry, z, curve->p, ndigits); + apply_z(rx, ry, z, curve); } EXPORT_SYMBOL(ecc_point_mult_shamir); @@ -1432,10 +1552,10 @@ int ecc_is_pubkey_valid_partial(const struct ecc_curve *curve, return -EINVAL; /* Check 3: Verify that y^2 == (x^3 + a·x + b) mod p */ - vli_mod_square_fast(yy, pk->y, curve->p, pk->ndigits); /* y^2 */ - vli_mod_square_fast(xxx, pk->x, curve->p, pk->ndigits); /* x^2 */ - vli_mod_mult_fast(xxx, xxx, pk->x, curve->p, pk->ndigits); /* x^3 */ - vli_mod_mult_fast(w, curve->a, pk->x, curve->p, pk->ndigits); /* a·x */ + vli_mod_square_fast(yy, pk->y, curve); /* y^2 */ + vli_mod_square_fast(xxx, pk->x, curve); /* x^2 */ + vli_mod_mult_fast(xxx, xxx, pk->x, curve); /* x^3 */ + vli_mod_mult_fast(w, curve->a, pk->x, curve); /* a·x */ vli_mod_add(w, w, curve->b, curve->p, pk->ndigits); /* a·x + b */ vli_mod_add(w, w, xxx, curve->p, pk->ndigits); /* x^3 + a·x + b */ if (vli_cmp(yy, w, pk->ndigits) != 0) /* Equation */ diff --git a/crypto/ecc.h b/crypto/ecc.h index 2ea86dfb5cf7..8f40ebd74565 100644 --- a/crypto/ecc.h +++ b/crypto/ecc.h @@ -29,7 +29,8 @@ /* One digit is u64 qword. */ #define ECC_CURVE_NIST_P192_DIGITS 3 #define ECC_CURVE_NIST_P256_DIGITS 4 -#define ECC_MAX_DIGITS (512 / 64) +#define ECC_CURVE_NIST_P384_DIGITS 6 +#define ECC_MAX_DIGITS (512 / 64) /* due to ecrdsa */ #define ECC_DIGITS_TO_BYTES_SHIFT 3 From patchwork Thu Feb 25 16:08:01 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Berger X-Patchwork-Id: 12104511 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3B7AEC433DB for ; Thu, 25 Feb 2021 16:10:46 +0000 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[9.47.158.153]) by b03ledav001.gho.boulder.ibm.com (Postfix) with ESMTP; Thu, 25 Feb 2021 16:08:22 +0000 (GMT) From: Stefan Berger To: keyrings@vger.kernel.org, linux-crypto@vger.kernel.org, davem@davemloft.net, herbert@gondor.apana.org.au, dhowells@redhat.com, zohar@linux.ibm.com Cc: linux-kernel@vger.kernel.org, patrick@puiterwijk.org, linux-integrity@vger.kernel.org, Saulo Alessandre , Stefan Berger Subject: [PATCH v9 8/9] ecdsa: Register NIST P384 and extend test suite Date: Thu, 25 Feb 2021 11:08:01 -0500 Message-Id: <20210225160802.2478700-9-stefanb@linux.vnet.ibm.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210225160802.2478700-1-stefanb@linux.vnet.ibm.com> References: <20210225160802.2478700-1-stefanb@linux.vnet.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.369,18.0.761 definitions=2021-02-25_09:2021-02-24,2021-02-25 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 phishscore=0 adultscore=0 impostorscore=0 clxscore=1015 priorityscore=1501 bulkscore=0 malwarescore=0 suspectscore=0 lowpriorityscore=0 spamscore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2102250127 Precedence: bulk List-ID: X-Mailing-List: linux-integrity@vger.kernel.org From: Saulo Alessandre * crypto/ecdsa.c - add ecdsa_nist_p384_init_tfm - register and unregister P384 tfm * crypto/testmgr.c - add test vector for P384 on vector of tests * crypto/testmgr.h - add test vector params for P384(sha1, sha224, sha256, sha384 and sha512) Signed-off-by: Saulo Alessandre Tested-by: Stefan Berger --- crypto/ecdsa.c | 33 +++++++++- crypto/testmgr.c | 6 ++ crypto/testmgr.h | 157 +++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 195 insertions(+), 1 deletion(-) diff --git a/crypto/ecdsa.c b/crypto/ecdsa.c index 04fbb3d2abc5..8cce80e4154e 100644 --- a/crypto/ecdsa.c +++ b/crypto/ecdsa.c @@ -145,7 +145,7 @@ static int _ecdsa_verify(struct ecc_ctx *ctx, const u64 *hash, /* res.x = res.x mod n (if res.x > order) */ if (unlikely(vli_cmp(res.x, curve->n, ndigits) == 1)) - /* faster alternative for NIST p256 & p192 */ + /* faster alternative for NIST p384, p256 & p192 */ vli_sub(res.x, res.x, curve->n, ndigits); if (!vli_cmp(res.x, r, ndigits)) @@ -289,6 +289,28 @@ static unsigned int ecdsa_max_size(struct crypto_akcipher *tfm) return ctx->pub_key.ndigits << ECC_DIGITS_TO_BYTES_SHIFT; } +static int ecdsa_nist_p384_init_tfm(struct crypto_akcipher *tfm) +{ + struct ecc_ctx *ctx = akcipher_tfm_ctx(tfm); + + return ecdsa_ecc_ctx_init(ctx, ECC_CURVE_NIST_P384); +} + +static struct akcipher_alg ecdsa_nist_p384 = { + .verify = ecdsa_verify, + .set_pub_key = ecdsa_set_pub_key, + .max_size = ecdsa_max_size, + .init = ecdsa_nist_p384_init_tfm, + .exit = ecdsa_exit_tfm, + .base = { + .cra_name = "ecdsa-nist-p384", + .cra_driver_name = "ecdsa-nist-p384-generic", + .cra_priority = 100, + .cra_module = THIS_MODULE, + .cra_ctxsize = sizeof(struct ecc_ctx), + }, +}; + static int ecdsa_nist_p256_init_tfm(struct crypto_akcipher *tfm) { struct ecc_ctx *ctx = akcipher_tfm_ctx(tfm); @@ -345,8 +367,16 @@ static int ecdsa_init(void) ret = crypto_register_akcipher(&ecdsa_nist_p256); if (ret) goto nist_p256_error; + + ret = crypto_register_akcipher(&ecdsa_nist_p384); + if (ret) + goto nist_p384_error; + return 0; +nist_p384_error: + crypto_unregister_akcipher(&ecdsa_nist_p256); + nist_p256_error: if (ecdsa_nist_p192_registered) crypto_unregister_akcipher(&ecdsa_nist_p192); @@ -358,6 +388,7 @@ static void ecdsa_exit(void) if (ecdsa_nist_p192_registered) crypto_unregister_akcipher(&ecdsa_nist_p192); crypto_unregister_akcipher(&ecdsa_nist_p256); + crypto_unregister_akcipher(&ecdsa_nist_p384); } subsys_initcall(ecdsa_init); diff --git a/crypto/testmgr.c b/crypto/testmgr.c index 2607602f9de5..08f85719338a 100644 --- a/crypto/testmgr.c +++ b/crypto/testmgr.c @@ -4925,6 +4925,12 @@ static const struct alg_test_desc alg_test_descs[] = { .suite = { .akcipher = __VECS(ecdsa_nist_p256_tv_template) } + }, { + .alg = "ecdsa-nist-p384", + .test = alg_test_akcipher, + .suite = { + .akcipher = __VECS(ecdsa_nist_p384_tv_template) + } }, { .alg = "ecrdsa", .test = alg_test_akcipher, diff --git a/crypto/testmgr.h b/crypto/testmgr.h index 2adcc0dc0bdd..e63a760aca2d 100644 --- a/crypto/testmgr.h +++ b/crypto/testmgr.h @@ -833,6 +833,163 @@ static const struct akcipher_testvec ecdsa_nist_p256_tv_template[] = { }, }; +static const struct akcipher_testvec ecdsa_nist_p384_tv_template[] = { + { + .key = /* secp384r1(sha1) */ + "\x04\x89\x25\xf3\x97\x88\xcb\xb0\x78\xc5\x72\x9a\x14\x6e\x7a\xb1" + "\x5a\xa5\x24\xf1\x95\x06\x9e\x28\xfb\xc4\xb9\xbe\x5a\x0d\xd9\x9f" + "\xf3\xd1\x4d\x2d\x07\x99\xbd\xda\xa7\x66\xec\xbb\xea\xba\x79\x42" + "\xc9\x34\x89\x6a\xe7\x0b\xc3\xf2\xfe\x32\x30\xbe\xba\xf9\xdf\x7e" + "\x4b\x6a\x07\x8e\x26\x66\x3f\x1d\xec\xa2\x57\x91\x51\xdd\x17\x0e" + "\x0b\x25\xd6\x80\x5c\x3b\xe6\x1a\x98\x48\x91\x45\x7a\x73\xb0\xc3" + "\xf1", + .key_len = 97, + .params = + "\x30\x10\x06\x07\x2a\x86\x48\xce\x3d\x02\x01\x06\x05\x2b\x81\x04" + "\x00\x22", + .param_len = 18, + .m = + "\x12\x55\x28\xf0\x77\xd5\xb6\x21\x71\x32\x48\xcd\x28\xa8\x25\x22" + "\x3a\x69\xc1\x93", + .m_size = 20, + .algo = OID_id_ecdsa_with_sha1, + .c = + "\x30\x66\x02\x31\x00\xf5\x0f\x24\x4c\x07\x93\x6f\x21\x57\x55\x07" + "\x20\x43\x30\xde\xa0\x8d\x26\x8e\xae\x63\x3f\xbc\x20\x3a\xc6\xf1" + "\x32\x3c\xce\x70\x2b\x78\xf1\x4c\x26\xe6\x5b\x86\xcf\xec\x7c\x7e" + "\xd0\x87\xd7\xd7\x6e\x02\x31\x00\xcd\xbb\x7e\x81\x5d\x8f\x63\xc0" + "\x5f\x63\xb1\xbe\x5e\x4c\x0e\xa1\xdf\x28\x8c\x1b\xfa\xf9\x95\x88" + "\x74\xa0\x0f\xbf\xaf\xc3\x36\x76\x4a\xa1\x59\xf1\x1c\xa4\x58\x26" + "\x79\x12\x2a\xb7\xc5\x15\x92\xc5", + .c_size = 104, + .public_key_vec = true, + .siggen_sigver_test = true, + }, { + .key = /* secp384r1(sha224) */ + "\x04\x69\x6c\xcf\x62\xee\xd0\x0d\xe5\xb5\x2f\x70\x54\xcf\x26\xa0" + "\xd9\x98\x8d\x92\x2a\xab\x9b\x11\xcb\x48\x18\xa1\xa9\x0d\xd5\x18" + "\x3e\xe8\x29\x6e\xf6\xe4\xb5\x8e\xc7\x4a\xc2\x5f\x37\x13\x99\x05" + "\xb6\xa4\x9d\xf9\xfb\x79\x41\xe7\xd7\x96\x9f\x73\x3b\x39\x43\xdc" + "\xda\xf4\x06\xb9\xa5\x29\x01\x9d\x3b\xe1\xd8\x68\x77\x2a\xf4\x50" + "\x6b\x93\x99\x6c\x66\x4c\x42\x3f\x65\x60\x6c\x1c\x0b\x93\x9b\x9d" + "\xe0", + .key_len = 97, + .params = + "\x30\x10\x06\x07\x2a\x86\x48\xce\x3d\x02\x01\x06\x05\x2b\x81\x04" + "\x00\x22", + .param_len = 18, + .m = + "\x12\x80\xb6\xeb\x25\xe2\x3d\xf0\x21\x32\x96\x17\x3a\x38\x39\xfd" + "\x1f\x05\x34\x7b\xb8\xf9\x71\x66\x03\x4f\xd5\xe5", + .m_size = 28, + .algo = OID_id_ecdsa_with_sha224, + .c = + "\x30\x66\x02\x31\x00\x8a\x51\x84\xce\x13\x1e\xd2\xdc\xec\xcb\xe4" + "\x89\x47\xb2\xf7\xbc\x97\xf1\xc8\x72\x26\xcf\x5a\x5e\xc5\xda\xb4" + "\xe3\x93\x07\xe0\x99\xc9\x9c\x11\xb8\x10\x01\xc5\x41\x3f\xdd\x15" + "\x1b\x68\x2b\x9d\x8b\x02\x31\x00\x8b\x03\x2c\xfc\x1f\xd1\xa9\xa4" + "\x4b\x00\x08\x31\x6c\xf5\xd5\xf6\xdf\xd8\x68\xa2\x64\x42\x65\xf3" + "\x4d\xd0\xc6\x6e\xb0\xe9\xfc\x14\x9f\x19\xd0\x42\x8b\x93\xc2\x11" + "\x88\x2b\x82\x26\x5e\x1c\xda\xfb", + .c_size = 104, + .public_key_vec = true, + .siggen_sigver_test = true, + }, { + .key = /* secp384r1(sha256) */ + "\x04\xee\xd6\xda\x3e\x94\x90\x00\x27\xed\xf8\x64\x55\xd6\x51\x9a" + "\x1f\x52\x00\x63\x78\xf1\xa9\xfd\x75\x4c\x9e\xb2\x20\x1a\x91\x5a" + "\xba\x7a\xa3\xe5\x6c\xb6\x25\x68\x4b\xe8\x13\xa6\x54\x87\x2c\x0e" + "\xd0\x83\x95\xbc\xbf\xc5\x28\x4f\x77\x1c\x46\xa6\xf0\xbc\xd4\xa4" + "\x8d\xc2\x8f\xb3\x32\x37\x40\xd6\xca\xf8\xae\x07\x34\x52\x39\x52" + "\x17\xc3\x34\x29\xd6\x40\xea\x5c\xb9\x3f\xfb\x32\x2e\x12\x33\xbc" + "\xab", + .key_len = 97, + .params = + "\x30\x10\x06\x07\x2a\x86\x48\xce\x3d\x02\x01\x06\x05\x2b\x81\x04" + "\x00\x22", + .param_len = 18, + .m = + "\xaa\xe7\xfd\x03\x26\xcb\x94\x71\xe4\xce\x0f\xc5\xff\xa6\x29\xa3" + "\xe1\xcc\x4c\x35\x4e\xde\xca\x80\xab\x26\x0c\x25\xe6\x68\x11\xc2", + .m_size = 32, + .algo = OID_id_ecdsa_with_sha256, + .c = + "\x30\x64\x02\x30\x08\x09\x12\x9d\x6e\x96\x64\xa6\x8e\x3f\x7e\xce" + "\x0a\x9b\xaa\x59\xcc\x47\x53\x87\xbc\xbd\x83\x3f\xaf\x06\x3f\x84" + "\x04\xe2\xf9\x67\xb6\xc6\xfc\x70\x2e\x66\x3c\x77\xc8\x8d\x2c\x79" + "\x3a\x8e\x32\xc4\x02\x30\x40\x34\xb8\x90\xa9\x80\xab\x47\x26\xa2" + "\xb0\x89\x42\x0a\xda\xd9\xdd\xce\xbc\xb2\x97\xf4\x9c\xf3\x15\x68" + "\xc0\x75\x3e\x23\x5e\x36\x4f\x8d\xde\x1e\x93\x8d\x95\xbb\x10\x0e" + "\xf4\x1f\x39\xca\x4d\x43", + .c_size = 102, + .public_key_vec = true, + .siggen_sigver_test = true, + }, { + .key = /* secp384r1(sha384) */ + "\x04\x3a\x2f\x62\xe7\x1a\xcf\x24\xd0\x0b\x7c\xe0\xed\x46\x0a\x4f" + "\x74\x16\x43\xe9\x1a\x25\x7c\x55\xff\xf0\x29\x68\x66\x20\x91\xf9" + "\xdb\x2b\xf6\xb3\x6c\x54\x01\xca\xc7\x6a\x5c\x0d\xeb\x68\xd9\x3c" + "\xf1\x01\x74\x1f\xf9\x6c\xe5\x5b\x60\xe9\x7f\x5d\xb3\x12\x80\x2a" + "\xd8\x67\x92\xc9\x0e\x4c\x4c\x6b\xa1\xb2\xa8\x1e\xac\x1c\x97\xd9" + "\x21\x67\xe5\x1b\x5a\x52\x31\x68\xd6\xee\xf0\x19\xb0\x55\xed\x89" + "\x9e", + .key_len = 97, + .params = + "\x30\x10\x06\x07\x2a\x86\x48\xce\x3d\x02\x01\x06\x05\x2b\x81\x04" + "\x00\x22", + .param_len = 18, + .m = + "\x8d\xf2\xc0\xe9\xa8\xf3\x8e\x44\xc4\x8c\x1a\xa0\xb8\xd7\x17\xdf" + "\xf2\x37\x1b\xc6\xe3\xf5\x62\xcc\x68\xf5\xd5\x0b\xbf\x73\x2b\xb1" + "\xb0\x4c\x04\x00\x31\xab\xfe\xc8\xd6\x09\xc8\xf2\xea\xd3\x28\xff", + .m_size = 48, + .algo = OID_id_ecdsa_with_sha384, + .c = + "\x30\x66\x02\x31\x00\x9b\x28\x68\xc0\xa1\xea\x8c\x50\xee\x2e\x62" + "\x35\x46\xfa\x00\xd8\x2d\x7a\x91\x5f\x49\x2d\x22\x08\x29\xe6\xfb" + "\xca\x8c\xd6\xb6\xb4\x3b\x1f\x07\x8f\x15\x02\xfe\x1d\xa2\xa4\xc8" + "\xf2\xea\x9d\x11\x1f\x02\x31\x00\xfc\x50\xf6\x43\xbd\x50\x82\x0e" + "\xbf\xe3\x75\x24\x49\xac\xfb\xc8\x71\xcd\x8f\x18\x99\xf0\x0f\x13" + "\x44\x92\x8c\x86\x99\x65\xb3\x97\x96\x17\x04\xc9\x05\x77\xf1\x8e" + "\xab\x8d\x4e\xde\xe6\x6d\x9b\x66", + .c_size = 104, + .public_key_vec = true, + .siggen_sigver_test = true, + }, { + .key = /* secp384r1(sha512) */ + "\x04\xb4\xe7\xc1\xeb\x64\x25\x22\x46\xc3\x86\x61\x80\xbe\x1e\x46" + "\xcb\xf6\x05\xc2\xee\x73\x83\xbc\xea\x30\x61\x4d\x40\x05\x41\xf4" + "\x8c\xe3\x0e\x5c\xf0\x50\xf2\x07\x19\xe8\x4f\x25\xbe\xee\x0c\x95" + "\x54\x36\x86\xec\xc2\x20\x75\xf3\x89\xb5\x11\xa1\xb7\xf5\xaf\xbe" + "\x81\xe4\xc3\x39\x06\xbd\xe4\xfe\x68\x1c\x6d\x99\x2b\x1b\x63\xfa" + "\xdf\x42\x5c\xc2\x5a\xc7\x0c\xf4\x15\xf7\x1b\xa3\x2e\xd7\x00\xac" + "\xa3", + .key_len = 97, + .params = + "\x30\x10\x06\x07\x2a\x86\x48\xce\x3d\x02\x01\x06\x05\x2b\x81\x04" + "\x00\x22", + .param_len = 18, + .m = + "\xe8\xb7\x52\x7d\x1a\x44\x20\x05\x53\x6b\x3a\x68\xf2\xe7\x6c\xa1" + "\xae\x9d\x84\xbb\xba\x52\x43\x3e\x2c\x42\x78\x49\xbf\x78\xb2\x71" + "\xeb\xe1\xe0\xe8\x42\x7b\x11\xad\x2b\x99\x05\x1d\x36\xe6\xac\xfc" + "\x55\x73\xf0\x15\x63\x39\xb8\x6a\x6a\xc5\x91\x5b\xca\x6a\xa8\x0e", + .m_size = 64, + .algo = OID_id_ecdsa_with_sha512, + .c = + "\x30\x63\x02\x2f\x1d\x20\x94\x77\xfe\x31\xfa\x4d\xc6\xef\xda\x02" + "\xe7\x0f\x52\x9a\x02\xde\x93\xe8\x83\xe4\x84\x4c\xfc\x6f\x80\xe3" + "\xaf\xb3\xd9\xdc\x2b\x43\x0e\x6a\xb3\x53\x6f\x3e\xb3\xc7\xa8\xb3" + "\x17\x77\xd1\x02\x30\x63\xf6\xf0\x3d\x5f\x5f\x99\x3f\xde\x3a\x3d" + "\x16\xaf\xb4\x52\x6a\xec\x63\xe3\x0c\xec\x50\xdc\xcc\xc4\x6a\x03" + "\x5f\x8d\x7a\xf9\xfb\x34\xe4\x8b\x80\xa5\xb6\xda\x2c\x4e\x45\xcf" + "\x3c\x93\xff\x50\x5d", + .c_size = 101, + .public_key_vec = true, + .siggen_sigver_test = true, + }, +}; + /* * EC-RDSA test vectors are generated by gost-engine. */ From patchwork Thu Feb 25 16:08:02 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Berger X-Patchwork-Id: 12104505 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, 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from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 36EFD6E052; Thu, 25 Feb 2021 16:08:24 +0000 (GMT) Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A526E6E04C; Thu, 25 Feb 2021 16:08:23 +0000 (GMT) Received: from sbct-3.pok.ibm.com (unknown [9.47.158.153]) by b03ledav001.gho.boulder.ibm.com (Postfix) with ESMTP; Thu, 25 Feb 2021 16:08:23 +0000 (GMT) From: Stefan Berger To: keyrings@vger.kernel.org, linux-crypto@vger.kernel.org, davem@davemloft.net, herbert@gondor.apana.org.au, dhowells@redhat.com, zohar@linux.ibm.com Cc: linux-kernel@vger.kernel.org, patrick@puiterwijk.org, linux-integrity@vger.kernel.org, Stefan Berger Subject: [PATCH v9 9/9] certs: Add support for using elliptic curve keys for signing modules Date: Thu, 25 Feb 2021 11:08:02 -0500 Message-Id: <20210225160802.2478700-10-stefanb@linux.vnet.ibm.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210225160802.2478700-1-stefanb@linux.vnet.ibm.com> References: <20210225160802.2478700-1-stefanb@linux.vnet.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.369,18.0.761 definitions=2021-02-25_09:2021-02-24,2021-02-25 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 bulkscore=0 adultscore=0 priorityscore=1501 phishscore=0 mlxscore=0 impostorscore=0 clxscore=1015 lowpriorityscore=0 suspectscore=0 spamscore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2102250127 Precedence: bulk List-ID: X-Mailing-List: linux-integrity@vger.kernel.org From: Stefan Berger This patch adds support for using elliptic curve keys for signing modules. It uses a NIST P384 (secp384r1) key if the user chooses an elliptic curve key and will have ECDSA support built into the kernel. Note: A developer choosing an ECDSA key for signing modules has to manually delete the signing key (rm certs/signing_key.*) when falling back to building an older version of a kernel that only supports RSA keys since otherwise ECDSA-signed modules will not be usable when that older kernel runs and the ECDSA key was still used for signing modules. Signed-off-by: Stefan Berger Reviewed-by: Mimi Zohar --- v8->v9: - Automatically select CONFIG_ECDSA for built-in ECDSA support - Added help documentation This patch builds on top Nayna's series for 'kernel build support for loading the kernel module signing key'. - https://lkml.org/lkml/2021/2/18/856 --- certs/Kconfig | 22 ++++++++++++++++++++++ certs/Makefile | 14 ++++++++++++++ crypto/asymmetric_keys/pkcs7_parser.c | 4 ++++ 3 files changed, 40 insertions(+) diff --git a/certs/Kconfig b/certs/Kconfig index 48675ad319db..919db43ce80b 100644 --- a/certs/Kconfig +++ b/certs/Kconfig @@ -15,6 +15,28 @@ config MODULE_SIG_KEY then the kernel will automatically generate the private key and certificate as described in Documentation/admin-guide/module-signing.rst +choice + prompt "Type of module signing key to be generated" + default MODULE_SIG_KEY_TYPE_RSA + help + The type of module signing key type to generated. This option + does not apply if a #PKCS11 URI is used. + +config MODULE_SIG_KEY_TYPE_RSA + bool "RSA" + depends on MODULE_SIG || IMA_APPRAISE_MODSIG + help + Use an RSA key for module signing. + +config MODULE_SIG_KEY_TYPE_ECDSA + bool "ECDSA" + select CRYPTO_ECDSA + depends on MODULE_SIG || IMA_APPRAISE_MODSIG + help + Use an elliptic curve key (NIST P384) for module signing. + +endchoice + config SYSTEM_TRUSTED_KEYRING bool "Provide system-wide ring of trusted keys" depends on KEYS diff --git a/certs/Makefile b/certs/Makefile index 3fe6b73786fa..c487d7021c54 100644 --- a/certs/Makefile +++ b/certs/Makefile @@ -69,6 +69,18 @@ else SIGNER = -signkey $(obj)/signing_key.key endif # CONFIG_IMA_APPRAISE_MODSIG +X509TEXT=$(shell openssl x509 -in $(CONFIG_MODULE_SIG_KEY) -text) + +# Support user changing key type +ifdef CONFIG_MODULE_SIG_KEY_TYPE_ECDSA +keytype_openssl = -newkey ec -pkeyopt ec_paramgen_curve:secp384r1 +$(if $(findstring ecdsa-with-,$(X509TEXT)),,$(shell rm -f $(CONFIG_MODULE_SIG_KEY))) +endif + +ifdef CONFIG_MODULE_SIG_KEY_TYPE_RSA +$(if $(findstring rsaEncryption,$(X509TEXT)),,$(shell rm -f $(CONFIG_MODULE_SIG_KEY))) +endif + $(obj)/signing_key.pem: $(obj)/x509.genkey @$(kecho) "###" @$(kecho) "### Now generating an X.509 key pair to be used for signing modules." @@ -86,12 +98,14 @@ ifeq ($(CONFIG_IMA_APPRAISE_MODSIG),y) -batch -x509 -config $(obj)/x509.genkey \ -outform PEM -out $(CA_KEY) \ -keyout $(CA_KEY) -extensions ca_ext \ + $(keytype_openssl) \ $($(quiet)redirect_openssl) endif # CONFIG_IMA_APPRAISE_MODSIG $(Q)openssl req -new -nodes -utf8 \ -batch -config $(obj)/x509.genkey \ -outform PEM -out $(obj)/signing_key.csr \ -keyout $(obj)/signing_key.key -extensions myexts \ + $(keytype_openssl) \ $($(quiet)redirect_openssl) $(Q)openssl x509 -req -days 36500 -in $(obj)/signing_key.csr \ -outform PEM -out $(obj)/signing_key.crt $(SIGNER) \ diff --git a/crypto/asymmetric_keys/pkcs7_parser.c b/crypto/asymmetric_keys/pkcs7_parser.c index 967329e0a07b..2546ec6a0505 100644 --- a/crypto/asymmetric_keys/pkcs7_parser.c +++ b/crypto/asymmetric_keys/pkcs7_parser.c @@ -269,6 +269,10 @@ int pkcs7_sig_note_pkey_algo(void *context, size_t hdrlen, ctx->sinfo->sig->pkey_algo = "rsa"; ctx->sinfo->sig->encoding = "pkcs1"; break; + case OID_id_ecdsa_with_sha256: + ctx->sinfo->sig->pkey_algo = "ecdsa"; + ctx->sinfo->sig->encoding = "x962"; + break; default: printk("Unsupported pkey algo: %u\n", ctx->last_oid); return -ENOPKG;