@@ -356,6 +356,7 @@ gss_krb5_checksum(struct crypto_ahash *tfm, char *header, int hdrlen,
kfree_sensitive(checksumdata);
return err ? GSS_S_FAILURE : GSS_S_COMPLETE;
}
+EXPORT_SYMBOL_IF_KUNIT(gss_krb5_checksum);
struct encryptor_desc {
u8 iv[GSS_KRB5_MAX_BLOCKSIZE];
@@ -10,6 +10,7 @@
#include <kunit/visibility.h>
#include <linux/kernel.h>
+#include <crypto/hash.h>
#include <linux/sunrpc/xdr.h>
#include <linux/sunrpc/gss_krb5.h>
@@ -64,6 +65,52 @@ static void kdf_case(struct kunit *test)
"key mismatch");
}
+static void checksum_case(struct kunit *test)
+{
+ const struct gss_krb5_test_param *param = test->param_value;
+ struct xdr_buf buf = {
+ .head[0].iov_base = param->plaintext->data,
+ .head[0].iov_len = param->plaintext->len,
+ .len = param->plaintext->len,
+ };
+ const struct gss_krb5_enctype *gk5e;
+ struct xdr_netobj Kc, checksum;
+ struct crypto_ahash *tfm;
+ int err;
+
+ /* Arrange */
+ gk5e = gss_krb5_lookup_enctype(param->enctype);
+ KUNIT_ASSERT_NOT_NULL(test, gk5e);
+
+ Kc.len = gk5e->Kc_length;
+ Kc.data = kunit_kzalloc(test, Kc.len, GFP_KERNEL);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, Kc.data);
+ err = gk5e->derive_key(gk5e, param->base_key, &Kc,
+ param->usage, GFP_KERNEL);
+ KUNIT_ASSERT_EQ(test, err, 0);
+
+ tfm = crypto_alloc_ahash(gk5e->cksum_name, 0, CRYPTO_ALG_ASYNC);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, tfm);
+ err = crypto_ahash_setkey(tfm, Kc.data, Kc.len);
+ KUNIT_ASSERT_EQ(test, err, 0);
+
+ checksum.len = gk5e->cksumlength;
+ checksum.data = kunit_kzalloc(test, checksum.len, GFP_KERNEL);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, checksum.data);
+
+ /* Act */
+ err = gss_krb5_checksum(tfm, NULL, 0, &buf, 0, &checksum);
+ KUNIT_ASSERT_EQ(test, err, 0);
+
+ /* Assert */
+ KUNIT_EXPECT_EQ_MSG(test,
+ memcmp(param->expected_result->data,
+ checksum.data, checksum.len), 0,
+ "checksum mismatch");
+
+ crypto_free_ahash(tfm);
+}
+
#define DEFINE_HEX_XDR_NETOBJ(name, hex_array...) \
static const u8 name ## _data[] = { hex_array }; \
static const struct xdr_netobj name = { \
@@ -71,6 +118,13 @@ static void kdf_case(struct kunit *test)
.len = sizeof(name##_data), \
}
+#define DEFINE_STR_XDR_NETOBJ(name, string) \
+ static const u8 name ## _str[] = string; \
+ static const struct xdr_netobj name = { \
+ .data = (u8 *)name##_str, \
+ .len = sizeof(name##_str) - 1, \
+ }
+
/*
* RFC 3961 Appendix A.1. n-fold
*
@@ -836,12 +890,126 @@ static const struct gss_krb5_test_param rfc6803_kdf_test_params[] = {
/* Creates the function rfc6803_kdf_gen_params */
KUNIT_ARRAY_PARAM(rfc6803_kdf, rfc6803_kdf_test_params, gss_krb5_get_desc);
+/*
+ * From RFC 6803 Section 10. Test vectors
+ *
+ * Sample checksums.
+ *
+ * Copyright (c) 2012 IETF Trust and the persons identified as the
+ * document authors. All rights reserved.
+ *
+ * XXX: These tests are likely to fail on EBCDIC or Unicode platforms.
+ */
+DEFINE_STR_XDR_NETOBJ(rfc6803_checksum_test1_plaintext,
+ "abcdefghijk");
+DEFINE_HEX_XDR_NETOBJ(rfc6803_checksum_test1_basekey,
+ 0x1d, 0xc4, 0x6a, 0x8d, 0x76, 0x3f, 0x4f, 0x93,
+ 0x74, 0x2b, 0xcb, 0xa3, 0x38, 0x75, 0x76, 0xc3
+);
+DEFINE_HEX_XDR_NETOBJ(rfc6803_checksum_test1_usage,
+ 0x00, 0x00, 0x00, 0x07, KEY_USAGE_SEED_CHECKSUM
+);
+DEFINE_HEX_XDR_NETOBJ(rfc6803_checksum_test1_expected_result,
+ 0x11, 0x78, 0xe6, 0xc5, 0xc4, 0x7a, 0x8c, 0x1a,
+ 0xe0, 0xc4, 0xb9, 0xc7, 0xd4, 0xeb, 0x7b, 0x6b
+);
+
+DEFINE_STR_XDR_NETOBJ(rfc6803_checksum_test2_plaintext,
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZ");
+DEFINE_HEX_XDR_NETOBJ(rfc6803_checksum_test2_basekey,
+ 0x50, 0x27, 0xbc, 0x23, 0x1d, 0x0f, 0x3a, 0x9d,
+ 0x23, 0x33, 0x3f, 0x1c, 0xa6, 0xfd, 0xbe, 0x7c
+);
+DEFINE_HEX_XDR_NETOBJ(rfc6803_checksum_test2_usage,
+ 0x00, 0x00, 0x00, 0x08, KEY_USAGE_SEED_CHECKSUM
+);
+DEFINE_HEX_XDR_NETOBJ(rfc6803_checksum_test2_expected_result,
+ 0xd1, 0xb3, 0x4f, 0x70, 0x04, 0xa7, 0x31, 0xf2,
+ 0x3a, 0x0c, 0x00, 0xbf, 0x6c, 0x3f, 0x75, 0x3a
+);
+
+DEFINE_STR_XDR_NETOBJ(rfc6803_checksum_test3_plaintext,
+ "123456789");
+DEFINE_HEX_XDR_NETOBJ(rfc6803_checksum_test3_basekey,
+ 0xb6, 0x1c, 0x86, 0xcc, 0x4e, 0x5d, 0x27, 0x57,
+ 0x54, 0x5a, 0xd4, 0x23, 0x39, 0x9f, 0xb7, 0x03,
+ 0x1e, 0xca, 0xb9, 0x13, 0xcb, 0xb9, 0x00, 0xbd,
+ 0x7a, 0x3c, 0x6d, 0xd8, 0xbf, 0x92, 0x01, 0x5b
+);
+DEFINE_HEX_XDR_NETOBJ(rfc6803_checksum_test3_usage,
+ 0x00, 0x00, 0x00, 0x09, KEY_USAGE_SEED_CHECKSUM
+);
+DEFINE_HEX_XDR_NETOBJ(rfc6803_checksum_test3_expected_result,
+ 0x87, 0xa1, 0x2c, 0xfd, 0x2b, 0x96, 0x21, 0x48,
+ 0x10, 0xf0, 0x1c, 0x82, 0x6e, 0x77, 0x44, 0xb1
+);
+
+DEFINE_STR_XDR_NETOBJ(rfc6803_checksum_test4_plaintext,
+ "!@#$%^&*()!@#$%^&*()!@#$%^&*()");
+DEFINE_HEX_XDR_NETOBJ(rfc6803_checksum_test4_basekey,
+ 0x32, 0x16, 0x4c, 0x5b, 0x43, 0x4d, 0x1d, 0x15,
+ 0x38, 0xe4, 0xcf, 0xd9, 0xbe, 0x80, 0x40, 0xfe,
+ 0x8c, 0x4a, 0xc7, 0xac, 0xc4, 0xb9, 0x3d, 0x33,
+ 0x14, 0xd2, 0x13, 0x36, 0x68, 0x14, 0x7a, 0x05
+);
+DEFINE_HEX_XDR_NETOBJ(rfc6803_checksum_test4_usage,
+ 0x00, 0x00, 0x00, 0x0a, KEY_USAGE_SEED_CHECKSUM
+);
+DEFINE_HEX_XDR_NETOBJ(rfc6803_checksum_test4_expected_result,
+ 0x3f, 0xa0, 0xb4, 0x23, 0x55, 0xe5, 0x2b, 0x18,
+ 0x91, 0x87, 0x29, 0x4a, 0xa2, 0x52, 0xab, 0x64
+);
+
+static const struct gss_krb5_test_param rfc6803_checksum_test_params[] = {
+ {
+ .desc = "camellia128-cts-cmac checksum test 1",
+ .enctype = ENCTYPE_CAMELLIA128_CTS_CMAC,
+ .base_key = &rfc6803_checksum_test1_basekey,
+ .usage = &rfc6803_checksum_test1_usage,
+ .plaintext = &rfc6803_checksum_test1_plaintext,
+ .expected_result = &rfc6803_checksum_test1_expected_result,
+ },
+ {
+ .desc = "camellia128-cts-cmac checksum test 2",
+ .enctype = ENCTYPE_CAMELLIA128_CTS_CMAC,
+ .base_key = &rfc6803_checksum_test2_basekey,
+ .usage = &rfc6803_checksum_test2_usage,
+ .plaintext = &rfc6803_checksum_test2_plaintext,
+ .expected_result = &rfc6803_checksum_test2_expected_result,
+ },
+ {
+ .desc = "camellia256-cts-cmac checksum test 3",
+ .enctype = ENCTYPE_CAMELLIA256_CTS_CMAC,
+ .base_key = &rfc6803_checksum_test3_basekey,
+ .usage = &rfc6803_checksum_test3_usage,
+ .plaintext = &rfc6803_checksum_test3_plaintext,
+ .expected_result = &rfc6803_checksum_test3_expected_result,
+ },
+ {
+ .desc = "camellia256-cts-cmac checksum test 4",
+ .enctype = ENCTYPE_CAMELLIA256_CTS_CMAC,
+ .base_key = &rfc6803_checksum_test4_basekey,
+ .usage = &rfc6803_checksum_test4_usage,
+ .plaintext = &rfc6803_checksum_test4_plaintext,
+ .expected_result = &rfc6803_checksum_test4_expected_result,
+ },
+};
+
+/* Creates the function rfc6803_checksum_gen_params */
+KUNIT_ARRAY_PARAM(rfc6803_checksum, rfc6803_checksum_test_params,
+ gss_krb5_get_desc);
+
static struct kunit_case rfc6803_test_cases[] = {
{
.name = "RFC 6803 key derivation",
.run_case = kdf_case,
.generate_params = rfc6803_kdf_gen_params,
},
+ {
+ .name = "RFC 6803 checksum",
+ .run_case = checksum_case,
+ .generate_params = rfc6803_checksum_gen_params,
+ },
};
static struct kunit_suite rfc6803_suite = {