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Then virtio-crypto gets request from guest side, and forwards the request to builtin driver to handle it. Test with a guest linux: 1, The self-test framework of crypto layer works fine in guest kernel 2, Test with Linux guest(with asym support), the following script test(note that pkey_XXX is supported only in a newer version of keyutils): - both public key & private key - create/close session - encrypt/decrypt/sign/verify basic driver operation - also test with kernel crypto layer(pkey add/query) All the cases work fine. Run script in guest: rm -rf *.der *.pem *.pfx modprobe pkcs8_key_parser # if CONFIG_PKCS8_PRIVATE_KEY_PARSER=m rm -rf /tmp/data dd if=/dev/random of=/tmp/data count=1 bs=20 openssl req -nodes -x509 -newkey rsa:2048 -keyout key.pem -out cert.pem -subj "/C=CN/ST=BJ/L=HD/O=qemu/OU=dev/CN=qemu/emailAddress=qemu@qemu.org" openssl pkcs8 -in key.pem -topk8 -nocrypt -outform DER -out key.der openssl x509 -in cert.pem -inform PEM -outform DER -out cert.der PRIV_KEY_ID=`cat key.der | keyctl padd asymmetric test_priv_key @s` echo "priv key id = "$PRIV_KEY_ID PUB_KEY_ID=`cat cert.der | keyctl padd asymmetric test_pub_key @s` echo "pub key id = "$PUB_KEY_ID keyctl pkey_query $PRIV_KEY_ID 0 keyctl pkey_query $PUB_KEY_ID 0 echo "Enc with priv key..." keyctl pkey_encrypt $PRIV_KEY_ID 0 /tmp/data enc=pkcs1 >/tmp/enc.priv echo "Dec with pub key..." keyctl pkey_decrypt $PRIV_KEY_ID 0 /tmp/enc.priv enc=pkcs1 >/tmp/dec cmp /tmp/data /tmp/dec echo "Sign with priv key..." keyctl pkey_sign $PRIV_KEY_ID 0 /tmp/data enc=pkcs1 hash=sha1 > /tmp/sig echo "Verify with pub key..." keyctl pkey_verify $PRIV_KEY_ID 0 /tmp/data /tmp/sig enc=pkcs1 hash=sha1 echo "Enc with pub key..." keyctl pkey_encrypt $PUB_KEY_ID 0 /tmp/data enc=pkcs1 >/tmp/enc.pub echo "Dec with priv key..." keyctl pkey_decrypt $PRIV_KEY_ID 0 /tmp/enc.pub enc=pkcs1 >/tmp/dec cmp /tmp/data /tmp/dec echo "Verify with pub key..." keyctl pkey_verify $PUB_KEY_ID 0 /tmp/data /tmp/sig enc=pkcs1 hash=sha1 Signed-off-by: zhenwei pi Signed-off-by: lei he conf.crypto_services = 1u << VIRTIO_CRYPTO_SERVICE_CIPHER | 1u << VIRTIO_CRYPTO_SERVICE_HASH | - 1u << VIRTIO_CRYPTO_SERVICE_MAC; + 1u << VIRTIO_CRYPTO_SERVICE_MAC | + 1u << VIRTIO_CRYPTO_SERVICE_AKCIPHER; backend->conf.cipher_algo_l = 1u << VIRTIO_CRYPTO_CIPHER_AES_CBC; backend->conf.hash_algo = 1u << VIRTIO_CRYPTO_HASH_SHA1; + backend->conf.akcipher_algo = 1u << VIRTIO_CRYPTO_AKCIPHER_RSA; /* * Set the Maximum length of crypto request. * Why this value? Just avoid to overflow when * memory allocation for each crypto request. */ - backend->conf.max_size = LONG_MAX - sizeof(CryptoDevBackendSymOpInfo); + backend->conf.max_size = LONG_MAX - sizeof(CryptoDevBackendOpInfo); backend->conf.max_cipher_key_len = CRYPTODEV_BUITLIN_MAX_CIPHER_KEY_LEN; backend->conf.max_auth_key_len = CRYPTODEV_BUITLIN_MAX_AUTH_KEY_LEN; @@ -148,6 +152,53 @@ err: return -1; } +static int cryptodev_builtin_get_rsa_hash_algo( + int virtio_rsa_hash, Error **errp) +{ + switch (virtio_rsa_hash) { + case VIRTIO_CRYPTO_RSA_MD5: + return QCRYPTO_HASH_ALG_MD5; + + case VIRTIO_CRYPTO_RSA_SHA1: + return QCRYPTO_HASH_ALG_SHA1; + + case VIRTIO_CRYPTO_RSA_SHA256: + return QCRYPTO_HASH_ALG_SHA256; + + case VIRTIO_CRYPTO_RSA_SHA512: + return QCRYPTO_HASH_ALG_SHA512; + + default: + error_setg(errp, "Unsupported rsa hash algo: %d", virtio_rsa_hash); + return -1; + } +} + +static int cryptodev_builtin_set_rsa_options( + int virtio_padding_algo, + int virtio_hash_algo, + QCryptoAkCipherOptionsRSA *opt, + Error **errp) +{ + if (virtio_padding_algo == VIRTIO_CRYPTO_RSA_PKCS1_PADDING) { + opt->padding_alg = QCRYPTO_RSA_PADDING_ALG_PKCS1; + opt->hash_alg = + cryptodev_builtin_get_rsa_hash_algo(virtio_hash_algo, errp); + if (opt->hash_alg < 0) { + return -1; + } + return 0; + } + + if (virtio_padding_algo == VIRTIO_CRYPTO_RSA_RAW_PADDING) { + opt->padding_alg = QCRYPTO_RSA_PADDING_ALG_RAW; + return 0; + } + + error_setg(errp, "Unsupported rsa padding algo: %d", virtio_padding_algo); + return -1; +} + static int cryptodev_builtin_create_cipher_session( CryptoDevBackendBuiltin *builtin, CryptoDevBackendSymSessionInfo *sess_info, @@ -240,26 +291,89 @@ static int cryptodev_builtin_create_cipher_session( return index; } -static int64_t cryptodev_builtin_sym_create_session( +static int cryptodev_builtin_create_akcipher_session( + CryptoDevBackendBuiltin *builtin, + CryptoDevBackendAsymSessionInfo *sess_info, + Error **errp) +{ + CryptoDevBackendBuiltinSession *sess; + QCryptoAkCipher *akcipher; + int index; + QCryptoAkCipherKeyType type; + QCryptoAkCipherOptions opts; + + switch (sess_info->algo) { + case VIRTIO_CRYPTO_AKCIPHER_RSA: + opts.alg = QCRYPTO_AKCIPHER_ALG_RSA; + if (cryptodev_builtin_set_rsa_options(sess_info->u.rsa.padding_algo, + sess_info->u.rsa.hash_algo, &opts.u.rsa, errp) != 0) { + return -1; + } + break; + + /* TODO support DSA&ECDSA until qemu crypto framework support these */ + + default: + error_setg(errp, "Unsupported akcipher alg %u", sess_info->algo); + return -1; + } + + switch (sess_info->keytype) { + case VIRTIO_CRYPTO_AKCIPHER_KEY_TYPE_PUBLIC: + type = QCRYPTO_AKCIPHER_KEY_TYPE_PUBLIC; + break; + + case VIRTIO_CRYPTO_AKCIPHER_KEY_TYPE_PRIVATE: + type = QCRYPTO_AKCIPHER_KEY_TYPE_PRIVATE; + break; + + default: + error_setg(errp, "Unsupported akcipher keytype %u", sess_info->keytype); + return -1; + } + + index = cryptodev_builtin_get_unused_session_index(builtin); + if (index < 0) { + error_setg(errp, "Total number of sessions created exceeds %u", + MAX_NUM_SESSIONS); + return -1; + } + + akcipher = qcrypto_akcipher_new(&opts, type, sess_info->key, + sess_info->keylen, errp); + if (!akcipher) { + return -1; + } + + sess = g_new0(CryptoDevBackendBuiltinSession, 1); + sess->akcipher = akcipher; + + builtin->sessions[index] = sess; + + return index; +} + +static int64_t cryptodev_builtin_create_session( CryptoDevBackend *backend, - CryptoDevBackendSymSessionInfo *sess_info, + CryptoDevBackendSessionInfo *sess_info, uint32_t queue_index, Error **errp) { CryptoDevBackendBuiltin *builtin = CRYPTODEV_BACKEND_BUILTIN(backend); - int64_t session_id = -1; - int ret; + CryptoDevBackendSymSessionInfo *sym_sess_info; + CryptoDevBackendAsymSessionInfo *asym_sess_info; switch (sess_info->op_code) { case VIRTIO_CRYPTO_CIPHER_CREATE_SESSION: - ret = cryptodev_builtin_create_cipher_session( - builtin, sess_info, errp); - if (ret < 0) { - return ret; - } else { - session_id = ret; - } - break; + sym_sess_info = &sess_info->u.sym_sess_info; + return cryptodev_builtin_create_cipher_session( + builtin, sym_sess_info, errp); + + case VIRTIO_CRYPTO_AKCIPHER_CREATE_SESSION: + asym_sess_info = &sess_info->u.asym_sess_info; + return cryptodev_builtin_create_akcipher_session( + builtin, asym_sess_info, errp); + case VIRTIO_CRYPTO_HASH_CREATE_SESSION: case VIRTIO_CRYPTO_MAC_CREATE_SESSION: default: @@ -268,50 +382,44 @@ static int64_t cryptodev_builtin_sym_create_session( return -1; } - return session_id; + return -1; } -static int cryptodev_builtin_sym_close_session( +static int cryptodev_builtin_close_session( CryptoDevBackend *backend, uint64_t session_id, uint32_t queue_index, Error **errp) { CryptoDevBackendBuiltin *builtin = CRYPTODEV_BACKEND_BUILTIN(backend); + CryptoDevBackendBuiltinSession *session; assert(session_id < MAX_NUM_SESSIONS && builtin->sessions[session_id]); - qcrypto_cipher_free(builtin->sessions[session_id]->cipher); - g_free(builtin->sessions[session_id]); + session = builtin->sessions[session_id]; + if (session->cipher) { + qcrypto_cipher_free(session->cipher); + } else if (session->akcipher) { + qcrypto_akcipher_free(session->akcipher); + } + + g_free(session); builtin->sessions[session_id] = NULL; return 0; } static int cryptodev_builtin_sym_operation( - CryptoDevBackend *backend, - CryptoDevBackendSymOpInfo *op_info, - uint32_t queue_index, Error **errp) + CryptoDevBackendBuiltinSession *sess, + CryptoDevBackendSymOpInfo *op_info, Error **errp) { - CryptoDevBackendBuiltin *builtin = - CRYPTODEV_BACKEND_BUILTIN(backend); - CryptoDevBackendBuiltinSession *sess; int ret; - if (op_info->session_id >= MAX_NUM_SESSIONS || - builtin->sessions[op_info->session_id] == NULL) { - error_setg(errp, "Cannot find a valid session id: %" PRIu64 "", - op_info->session_id); - return -VIRTIO_CRYPTO_INVSESS; - } - if (op_info->op_type == VIRTIO_CRYPTO_SYM_OP_ALGORITHM_CHAINING) { error_setg(errp, "Algorithm chain is unsupported for cryptdoev-builtin"); return -VIRTIO_CRYPTO_NOTSUPP; } - sess = builtin->sessions[op_info->session_id]; - if (op_info->iv_len > 0) { ret = qcrypto_cipher_setiv(sess->cipher, op_info->iv, op_info->iv_len, errp); @@ -333,9 +441,95 @@ static int cryptodev_builtin_sym_operation( return -VIRTIO_CRYPTO_ERR; } } + + return VIRTIO_CRYPTO_OK; +} + +static int cryptodev_builtin_asym_operation( + CryptoDevBackendBuiltinSession *sess, uint32_t op_code, + CryptoDevBackendAsymOpInfo *op_info, Error **errp) +{ + int ret; + + switch (op_code) { + case VIRTIO_CRYPTO_AKCIPHER_ENCRYPT: + ret = qcrypto_akcipher_encrypt(sess->akcipher, + op_info->src, op_info->src_len, + op_info->dst, op_info->dst_len, errp); + break; + + case VIRTIO_CRYPTO_AKCIPHER_DECRYPT: + ret = qcrypto_akcipher_decrypt(sess->akcipher, + op_info->src, op_info->src_len, + op_info->dst, op_info->dst_len, errp); + break; + + case VIRTIO_CRYPTO_AKCIPHER_SIGN: + ret = qcrypto_akcipher_sign(sess->akcipher, + op_info->src, op_info->src_len, + op_info->dst, op_info->dst_len, errp); + break; + + case VIRTIO_CRYPTO_AKCIPHER_VERIFY: + ret = qcrypto_akcipher_verify(sess->akcipher, + op_info->src, op_info->src_len, + op_info->dst, op_info->dst_len, errp); + break; + + default: + return -VIRTIO_CRYPTO_ERR; + } + + if (ret < 0) { + if (op_code == VIRTIO_CRYPTO_AKCIPHER_VERIFY) { + return -VIRTIO_CRYPTO_KEY_REJECTED; + } + return -VIRTIO_CRYPTO_ERR; + } + + /* Buffer is too short */ + if (unlikely(ret > op_info->dst_len)) { + return -VIRTIO_CRYPTO_ERR; + } + + op_info->dst_len = ret; + return VIRTIO_CRYPTO_OK; } +static int cryptodev_builtin_operation( + CryptoDevBackend *backend, + CryptoDevBackendOpInfo *op_info, + uint32_t queue_index, Error **errp) +{ + CryptoDevBackendBuiltin *builtin = + CRYPTODEV_BACKEND_BUILTIN(backend); + CryptoDevBackendBuiltinSession *sess; + CryptoDevBackendSymOpInfo *sym_op_info; + CryptoDevBackendAsymOpInfo *asym_op_info; + enum CryptoDevBackendAlgType algtype = op_info->algtype; + int ret = -VIRTIO_CRYPTO_ERR; + + if (op_info->session_id >= MAX_NUM_SESSIONS || + builtin->sessions[op_info->session_id] == NULL) { + error_setg(errp, "Cannot find a valid session id: %" PRIu64 "", + op_info->session_id); + return -VIRTIO_CRYPTO_INVSESS; + } + + sess = builtin->sessions[op_info->session_id]; + if (algtype == CRYPTODEV_BACKEND_ALG_SYM) { + sym_op_info = op_info->u.sym_op_info; + ret = cryptodev_builtin_sym_operation(sess, sym_op_info, errp); + } else if (algtype == CRYPTODEV_BACKEND_ALG_ASYM) { + asym_op_info = op_info->u.asym_op_info; + ret = cryptodev_builtin_asym_operation(sess, op_info->op_code, + asym_op_info, errp); + } + + return ret; +} + static void cryptodev_builtin_cleanup( CryptoDevBackend *backend, Error **errp) @@ -348,7 +542,7 @@ static void cryptodev_builtin_cleanup( for (i = 0; i < MAX_NUM_SESSIONS; i++) { if (builtin->sessions[i] != NULL) { - cryptodev_builtin_sym_close_session(backend, i, 0, &error_abort); + cryptodev_builtin_close_session(backend, i, 0, &error_abort); } } @@ -370,9 +564,9 @@ cryptodev_builtin_class_init(ObjectClass *oc, void *data) bc->init = cryptodev_builtin_init; bc->cleanup = cryptodev_builtin_cleanup; - bc->create_session = cryptodev_builtin_sym_create_session; - bc->close_session = cryptodev_builtin_sym_close_session; - bc->do_sym_op = cryptodev_builtin_sym_operation; + bc->create_session = cryptodev_builtin_create_session; + bc->close_session = cryptodev_builtin_close_session; + bc->do_op = cryptodev_builtin_operation; } static const TypeInfo cryptodev_builtin_info = { diff --git a/backends/cryptodev-vhost-user.c b/backends/cryptodev-vhost-user.c index bedb452474..5443a59153 100644 --- a/backends/cryptodev-vhost-user.c +++ b/backends/cryptodev-vhost-user.c @@ -259,7 +259,33 @@ static int64_t cryptodev_vhost_user_sym_create_session( return -1; } -static int cryptodev_vhost_user_sym_close_session( +static int64_t cryptodev_vhost_user_create_session( + CryptoDevBackend *backend, + CryptoDevBackendSessionInfo *sess_info, + uint32_t queue_index, Error **errp) +{ + uint32_t op_code = sess_info->op_code; + CryptoDevBackendSymSessionInfo *sym_sess_info; + + switch (op_code) { + case VIRTIO_CRYPTO_CIPHER_CREATE_SESSION: + case VIRTIO_CRYPTO_HASH_CREATE_SESSION: + case VIRTIO_CRYPTO_MAC_CREATE_SESSION: + case VIRTIO_CRYPTO_AEAD_CREATE_SESSION: + sym_sess_info = &sess_info->u.sym_sess_info; + return cryptodev_vhost_user_sym_create_session(backend, sym_sess_info, + queue_index, errp); + default: + error_setg(errp, "Unsupported opcode :%" PRIu32 "", + sess_info->op_code); + return -1; + + } + + return -1; +} + +static int cryptodev_vhost_user_close_session( CryptoDevBackend *backend, uint64_t session_id, uint32_t queue_index, Error **errp) @@ -351,9 +377,9 @@ cryptodev_vhost_user_class_init(ObjectClass *oc, void *data) bc->init = cryptodev_vhost_user_init; bc->cleanup = cryptodev_vhost_user_cleanup; - bc->create_session = cryptodev_vhost_user_sym_create_session; - bc->close_session = cryptodev_vhost_user_sym_close_session; - bc->do_sym_op = NULL; + bc->create_session = cryptodev_vhost_user_create_session; + bc->close_session = cryptodev_vhost_user_close_session; + bc->do_op = NULL; object_class_property_add_str(oc, "chardev", cryptodev_vhost_user_get_chardev, diff --git a/backends/cryptodev.c b/backends/cryptodev.c index 2b105e433c..33eb4e1a70 100644 --- a/backends/cryptodev.c +++ b/backends/cryptodev.c @@ -72,9 +72,9 @@ void cryptodev_backend_cleanup( } } -int64_t cryptodev_backend_sym_create_session( +int64_t cryptodev_backend_create_session( CryptoDevBackend *backend, - CryptoDevBackendSymSessionInfo *sess_info, + CryptoDevBackendSessionInfo *sess_info, uint32_t queue_index, Error **errp) { CryptoDevBackendClass *bc = @@ -87,7 +87,7 @@ int64_t cryptodev_backend_sym_create_session( return -1; } -int cryptodev_backend_sym_close_session( +int cryptodev_backend_close_session( CryptoDevBackend *backend, uint64_t session_id, uint32_t queue_index, Error **errp) @@ -102,16 +102,16 @@ int cryptodev_backend_sym_close_session( return -1; } -static int cryptodev_backend_sym_operation( +static int cryptodev_backend_operation( CryptoDevBackend *backend, - CryptoDevBackendSymOpInfo *op_info, + CryptoDevBackendOpInfo *op_info, uint32_t queue_index, Error **errp) { CryptoDevBackendClass *bc = CRYPTODEV_BACKEND_GET_CLASS(backend); - if (bc->do_sym_op) { - return bc->do_sym_op(backend, op_info, queue_index, errp); + if (bc->do_op) { + return bc->do_op(backend, op_info, queue_index, errp); } return -VIRTIO_CRYPTO_ERR; @@ -123,20 +123,18 @@ int cryptodev_backend_crypto_operation( uint32_t queue_index, Error **errp) { VirtIOCryptoReq *req = opaque; + CryptoDevBackendOpInfo *op_info = &req->op_info; + enum CryptoDevBackendAlgType algtype = req->flags; - if (req->flags == CRYPTODEV_BACKEND_ALG_SYM) { - CryptoDevBackendSymOpInfo *op_info; - op_info = req->u.sym_op_info; - - return cryptodev_backend_sym_operation(backend, - op_info, queue_index, errp); - } else { + if ((algtype != CRYPTODEV_BACKEND_ALG_SYM) + && (algtype != CRYPTODEV_BACKEND_ALG_ASYM)) { error_setg(errp, "Unsupported cryptodev alg type: %" PRIu32 "", - req->flags); - return -VIRTIO_CRYPTO_NOTSUPP; + algtype); + + return -VIRTIO_CRYPTO_NOTSUPP; } - return -VIRTIO_CRYPTO_ERR; + return cryptodev_backend_operation(backend, op_info, queue_index, errp); } static void diff --git a/hw/virtio/virtio-crypto.c b/hw/virtio/virtio-crypto.c index dcd80b904d..a98105d9e9 100644 --- a/hw/virtio/virtio-crypto.c +++ b/hw/virtio/virtio-crypto.c @@ -83,7 +83,8 @@ virtio_crypto_create_sym_session(VirtIOCrypto *vcrypto, struct iovec *iov, unsigned int out_num) { VirtIODevice *vdev = VIRTIO_DEVICE(vcrypto); - CryptoDevBackendSymSessionInfo info; + CryptoDevBackendSessionInfo info; + CryptoDevBackendSymSessionInfo *sym_info; int64_t session_id; int queue_index; uint32_t op_type; @@ -92,11 +93,13 @@ virtio_crypto_create_sym_session(VirtIOCrypto *vcrypto, memset(&info, 0, sizeof(info)); op_type = ldl_le_p(&sess_req->op_type); - info.op_type = op_type; info.op_code = opcode; + sym_info = &info.u.sym_sess_info; + sym_info->op_type = op_type; + if (op_type == VIRTIO_CRYPTO_SYM_OP_CIPHER) { - ret = virtio_crypto_cipher_session_helper(vdev, &info, + ret = virtio_crypto_cipher_session_helper(vdev, sym_info, &sess_req->u.cipher.para, &iov, &out_num); if (ret < 0) { @@ -105,47 +108,47 @@ virtio_crypto_create_sym_session(VirtIOCrypto *vcrypto, } else if (op_type == VIRTIO_CRYPTO_SYM_OP_ALGORITHM_CHAINING) { size_t s; /* cipher part */ - ret = virtio_crypto_cipher_session_helper(vdev, &info, + ret = virtio_crypto_cipher_session_helper(vdev, sym_info, &sess_req->u.chain.para.cipher_param, &iov, &out_num); if (ret < 0) { goto err; } /* hash part */ - info.alg_chain_order = ldl_le_p( + sym_info->alg_chain_order = ldl_le_p( &sess_req->u.chain.para.alg_chain_order); - info.add_len = ldl_le_p(&sess_req->u.chain.para.aad_len); - info.hash_mode = ldl_le_p(&sess_req->u.chain.para.hash_mode); - if (info.hash_mode == VIRTIO_CRYPTO_SYM_HASH_MODE_AUTH) { - info.hash_alg = ldl_le_p(&sess_req->u.chain.para.u.mac_param.algo); - info.auth_key_len = ldl_le_p( + sym_info->add_len = ldl_le_p(&sess_req->u.chain.para.aad_len); + sym_info->hash_mode = ldl_le_p(&sess_req->u.chain.para.hash_mode); + if (sym_info->hash_mode == VIRTIO_CRYPTO_SYM_HASH_MODE_AUTH) { + sym_info->hash_alg = + ldl_le_p(&sess_req->u.chain.para.u.mac_param.algo); + sym_info->auth_key_len = ldl_le_p( &sess_req->u.chain.para.u.mac_param.auth_key_len); - info.hash_result_len = ldl_le_p( + sym_info->hash_result_len = ldl_le_p( &sess_req->u.chain.para.u.mac_param.hash_result_len); - if (info.auth_key_len > vcrypto->conf.max_auth_key_len) { + if (sym_info->auth_key_len > vcrypto->conf.max_auth_key_len) { error_report("virtio-crypto length of auth key is too big: %u", - info.auth_key_len); + sym_info->auth_key_len); ret = -VIRTIO_CRYPTO_ERR; goto err; } /* get auth key */ - if (info.auth_key_len > 0) { - DPRINTF("auth_keylen=%" PRIu32 "\n", info.auth_key_len); - info.auth_key = g_malloc(info.auth_key_len); - s = iov_to_buf(iov, out_num, 0, info.auth_key, - info.auth_key_len); - if (unlikely(s != info.auth_key_len)) { + if (sym_info->auth_key_len > 0) { + sym_info->auth_key = g_malloc(sym_info->auth_key_len); + s = iov_to_buf(iov, out_num, 0, sym_info->auth_key, + sym_info->auth_key_len); + if (unlikely(s != sym_info->auth_key_len)) { virtio_error(vdev, "virtio-crypto authenticated key incorrect"); ret = -EFAULT; goto err; } - iov_discard_front(&iov, &out_num, info.auth_key_len); + iov_discard_front(&iov, &out_num, sym_info->auth_key_len); } - } else if (info.hash_mode == VIRTIO_CRYPTO_SYM_HASH_MODE_PLAIN) { - info.hash_alg = ldl_le_p( + } else if (sym_info->hash_mode == VIRTIO_CRYPTO_SYM_HASH_MODE_PLAIN) { + sym_info->hash_alg = ldl_le_p( &sess_req->u.chain.para.u.hash_param.algo); - info.hash_result_len = ldl_le_p( + sym_info->hash_result_len = ldl_le_p( &sess_req->u.chain.para.u.hash_param.hash_result_len); } else { /* VIRTIO_CRYPTO_SYM_HASH_MODE_NESTED */ @@ -161,13 +164,10 @@ virtio_crypto_create_sym_session(VirtIOCrypto *vcrypto, } queue_index = virtio_crypto_vq2q(queue_id); - session_id = cryptodev_backend_sym_create_session( + session_id = cryptodev_backend_create_session( vcrypto->cryptodev, &info, queue_index, &local_err); if (session_id >= 0) { - DPRINTF("create session_id=%" PRIu64 " successfully\n", - session_id); - ret = session_id; } else { if (local_err) { @@ -177,11 +177,78 @@ virtio_crypto_create_sym_session(VirtIOCrypto *vcrypto, } err: - g_free(info.cipher_key); - g_free(info.auth_key); + g_free(sym_info->cipher_key); + g_free(sym_info->auth_key); return ret; } +static int64_t +virtio_crypto_create_asym_session(VirtIOCrypto *vcrypto, + struct virtio_crypto_akcipher_create_session_req *sess_req, + uint32_t queue_id, uint32_t opcode, + struct iovec *iov, unsigned int out_num) +{ + VirtIODevice *vdev = VIRTIO_DEVICE(vcrypto); + CryptoDevBackendSessionInfo info = {0}; + CryptoDevBackendAsymSessionInfo *asym_info; + int64_t session_id; + int queue_index; + uint32_t algo, keytype, keylen; + g_autofree uint8_t *key = NULL; + Error *local_err = NULL; + + algo = ldl_le_p(&sess_req->para.algo); + keytype = ldl_le_p(&sess_req->para.keytype); + keylen = ldl_le_p(&sess_req->para.keylen); + + if ((keytype != VIRTIO_CRYPTO_AKCIPHER_KEY_TYPE_PUBLIC) + && (keytype != VIRTIO_CRYPTO_AKCIPHER_KEY_TYPE_PRIVATE)) { + error_report("unsupported asym keytype: %d", keytype); + return -VIRTIO_CRYPTO_NOTSUPP; + } + + if (keylen) { + key = g_malloc(keylen); + if (iov_to_buf(iov, out_num, 0, key, keylen) != keylen) { + virtio_error(vdev, "virtio-crypto asym key incorrect"); + return -EFAULT; + } + iov_discard_front(&iov, &out_num, keylen); + } + + info.op_code = opcode; + asym_info = &info.u.asym_sess_info; + asym_info->algo = algo; + asym_info->keytype = keytype; + asym_info->keylen = keylen; + asym_info->key = key; + switch (asym_info->algo) { + case VIRTIO_CRYPTO_AKCIPHER_RSA: + asym_info->u.rsa.padding_algo = + ldl_le_p(&sess_req->para.u.rsa.padding_algo); + asym_info->u.rsa.hash_algo = + ldl_le_p(&sess_req->para.u.rsa.hash_algo); + break; + + /* TODO DSA&ECDSA handling */ + + default: + return -VIRTIO_CRYPTO_ERR; + } + + queue_index = virtio_crypto_vq2q(queue_id); + session_id = cryptodev_backend_create_session(vcrypto->cryptodev, &info, + queue_index, &local_err); + if (session_id < 0) { + if (local_err) { + error_report_err(local_err); + } + return -VIRTIO_CRYPTO_ERR; + } + + return session_id; +} + static uint8_t virtio_crypto_handle_close_session(VirtIOCrypto *vcrypto, struct virtio_crypto_destroy_session_req *close_sess_req, @@ -195,7 +262,7 @@ virtio_crypto_handle_close_session(VirtIOCrypto *vcrypto, session_id = ldq_le_p(&close_sess_req->session_id); DPRINTF("close session, id=%" PRIu64 "\n", session_id); - ret = cryptodev_backend_sym_close_session( + ret = cryptodev_backend_close_session( vcrypto->cryptodev, session_id, queue_id, &local_err); if (ret == 0) { status = VIRTIO_CRYPTO_OK; @@ -260,13 +327,22 @@ static void virtio_crypto_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq) opcode = ldl_le_p(&ctrl.header.opcode); queue_id = ldl_le_p(&ctrl.header.queue_id); + memset(&input, 0, sizeof(input)); switch (opcode) { case VIRTIO_CRYPTO_CIPHER_CREATE_SESSION: - memset(&input, 0, sizeof(input)); session_id = virtio_crypto_create_sym_session(vcrypto, &ctrl.u.sym_create_session, queue_id, opcode, out_iov, out_num); + goto check_session; + + case VIRTIO_CRYPTO_AKCIPHER_CREATE_SESSION: + session_id = virtio_crypto_create_asym_session(vcrypto, + &ctrl.u.akcipher_create_session, + queue_id, opcode, + out_iov, out_num); + +check_session: /* Serious errors, need to reset virtio crypto device */ if (session_id == -EFAULT) { virtqueue_detach_element(vq, elem, 0); @@ -290,10 +366,12 @@ static void virtio_crypto_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq) virtqueue_push(vq, elem, sizeof(input)); virtio_notify(vdev, vq); break; + case VIRTIO_CRYPTO_CIPHER_DESTROY_SESSION: case VIRTIO_CRYPTO_HASH_DESTROY_SESSION: case VIRTIO_CRYPTO_MAC_DESTROY_SESSION: case VIRTIO_CRYPTO_AEAD_DESTROY_SESSION: + case VIRTIO_CRYPTO_AKCIPHER_DESTROY_SESSION: status = virtio_crypto_handle_close_session(vcrypto, &ctrl.u.destroy_session, queue_id); /* The status only occupy one byte, we can directly use it */ @@ -311,7 +389,6 @@ static void virtio_crypto_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq) case VIRTIO_CRYPTO_AEAD_CREATE_SESSION: default: error_report("virtio-crypto unsupported ctrl opcode: %d", opcode); - memset(&input, 0, sizeof(input)); stl_le_p(&input.status, VIRTIO_CRYPTO_NOTSUPP); s = iov_from_buf(in_iov, in_num, 0, &input, sizeof(input)); if (unlikely(s != sizeof(input))) { @@ -339,28 +416,39 @@ static void virtio_crypto_init_request(VirtIOCrypto *vcrypto, VirtQueue *vq, req->in_num = 0; req->in_len = 0; req->flags = CRYPTODEV_BACKEND_ALG__MAX; - req->u.sym_op_info = NULL; + memset(&req->op_info, 0x00, sizeof(req->op_info)); } static void virtio_crypto_free_request(VirtIOCryptoReq *req) { - if (req) { - if (req->flags == CRYPTODEV_BACKEND_ALG_SYM) { - size_t max_len; - CryptoDevBackendSymOpInfo *op_info = req->u.sym_op_info; - - max_len = op_info->iv_len + - op_info->aad_len + - op_info->src_len + - op_info->dst_len + - op_info->digest_result_len; - - /* Zeroize and free request data structure */ - memset(op_info, 0, sizeof(*op_info) + max_len); + if (!req) { + return; + } + + if (req->flags == CRYPTODEV_BACKEND_ALG_SYM) { + size_t max_len; + CryptoDevBackendSymOpInfo *op_info = req->op_info.u.sym_op_info; + + max_len = op_info->iv_len + + op_info->aad_len + + op_info->src_len + + op_info->dst_len + + op_info->digest_result_len; + + /* Zeroize and free request data structure */ + memset(op_info, 0, sizeof(*op_info) + max_len); + g_free(op_info); + } else if (req->flags == CRYPTODEV_BACKEND_ALG_ASYM) { + CryptoDevBackendAsymOpInfo *op_info = req->op_info.u.asym_op_info; + if (op_info) { + g_free(op_info->src); + g_free(op_info->dst); + memset(op_info, 0, sizeof(*op_info)); g_free(op_info); } - g_free(req); } + + g_free(req); } static void @@ -397,6 +485,35 @@ virtio_crypto_sym_input_data_helper(VirtIODevice *vdev, } } +static void +virtio_crypto_akcipher_input_data_helper(VirtIODevice *vdev, + VirtIOCryptoReq *req, int32_t status, + CryptoDevBackendAsymOpInfo *asym_op_info) +{ + size_t s, len; + + if (status != VIRTIO_CRYPTO_OK) { + return; + } + + len = asym_op_info->dst_len; + if (!len) { + return; + } + + s = iov_from_buf(req->in_iov, req->in_num, 0, asym_op_info->dst, len); + if (s != len) { + virtio_error(vdev, "virtio-crypto asym dest data incorrect"); + return; + } + + iov_discard_front(&req->in_iov, &req->in_num, len); + + /* For akcipher, dst_len may be changed after operation */ + req->in_len = sizeof(struct virtio_crypto_inhdr) + asym_op_info->dst_len; +} + + static void virtio_crypto_req_complete(VirtIOCryptoReq *req, uint8_t status) { VirtIOCrypto *vcrypto = req->vcrypto; @@ -404,7 +521,10 @@ static void virtio_crypto_req_complete(VirtIOCryptoReq *req, uint8_t status) if (req->flags == CRYPTODEV_BACKEND_ALG_SYM) { virtio_crypto_sym_input_data_helper(vdev, req, status, - req->u.sym_op_info); + req->op_info.u.sym_op_info); + } else if (req->flags == CRYPTODEV_BACKEND_ALG_ASYM) { + virtio_crypto_akcipher_input_data_helper(vdev, req, status, + req->op_info.u.asym_op_info); } stb_p(&req->in->status, status); virtqueue_push(req->vq, &req->elem, req->in_len); @@ -543,41 +663,100 @@ err: static int virtio_crypto_handle_sym_req(VirtIOCrypto *vcrypto, struct virtio_crypto_sym_data_req *req, - CryptoDevBackendSymOpInfo **sym_op_info, + CryptoDevBackendOpInfo *op_info, struct iovec *iov, unsigned int out_num) { VirtIODevice *vdev = VIRTIO_DEVICE(vcrypto); + CryptoDevBackendSymOpInfo *sym_op_info; uint32_t op_type; - CryptoDevBackendSymOpInfo *op_info; op_type = ldl_le_p(&req->op_type); - if (op_type == VIRTIO_CRYPTO_SYM_OP_CIPHER) { - op_info = virtio_crypto_sym_op_helper(vdev, &req->u.cipher.para, + sym_op_info = virtio_crypto_sym_op_helper(vdev, &req->u.cipher.para, NULL, iov, out_num); - if (!op_info) { + if (!sym_op_info) { return -EFAULT; } - op_info->op_type = op_type; } else if (op_type == VIRTIO_CRYPTO_SYM_OP_ALGORITHM_CHAINING) { - op_info = virtio_crypto_sym_op_helper(vdev, NULL, + sym_op_info = virtio_crypto_sym_op_helper(vdev, NULL, &req->u.chain.para, iov, out_num); - if (!op_info) { + if (!sym_op_info) { return -EFAULT; } - op_info->op_type = op_type; } else { /* VIRTIO_CRYPTO_SYM_OP_NONE */ error_report("virtio-crypto unsupported cipher type"); return -VIRTIO_CRYPTO_NOTSUPP; } - *sym_op_info = op_info; + sym_op_info->op_type = op_type; + op_info->u.sym_op_info = sym_op_info; return 0; } +static int +virtio_crypto_handle_asym_req(VirtIOCrypto *vcrypto, + struct virtio_crypto_akcipher_data_req *req, + CryptoDevBackendOpInfo *op_info, + struct iovec *iov, unsigned int out_num) +{ + VirtIODevice *vdev = VIRTIO_DEVICE(vcrypto); + CryptoDevBackendAsymOpInfo *asym_op_info; + uint32_t src_len; + uint32_t dst_len; + uint32_t len; + uint8_t *src = NULL; + uint8_t *dst = NULL; + + asym_op_info = g_malloc0(sizeof(CryptoDevBackendAsymOpInfo)); + src_len = ldl_le_p(&req->para.src_data_len); + dst_len = ldl_le_p(&req->para.dst_data_len); + + if (src_len > 0) { + src = g_malloc0(src_len); + len = iov_to_buf(iov, out_num, 0, src, src_len); + if (unlikely(len != src_len)) { + virtio_error(vdev, "virtio-crypto asym src data incorrect" + "expected %u, actual %u", src_len, len); + goto err; + } + + iov_discard_front(&iov, &out_num, src_len); + } + + if (dst_len > 0) { + dst = g_malloc0(dst_len); + + if (op_info->op_code == VIRTIO_CRYPTO_AKCIPHER_VERIFY) { + len = iov_to_buf(iov, out_num, 0, dst, dst_len); + if (unlikely(len != dst_len)) { + virtio_error(vdev, "virtio-crypto asym dst data incorrect" + "expected %u, actual %u", dst_len, len); + goto err; + } + + iov_discard_front(&iov, &out_num, dst_len); + } + } + + asym_op_info->src_len = src_len; + asym_op_info->dst_len = dst_len; + asym_op_info->src = src; + asym_op_info->dst = dst; + op_info->u.asym_op_info = asym_op_info; + + return 0; + + err: + g_free(asym_op_info); + g_free(src); + g_free(dst); + + return -EFAULT; +} + static int virtio_crypto_handle_request(VirtIOCryptoReq *request) { @@ -595,8 +774,7 @@ virtio_crypto_handle_request(VirtIOCryptoReq *request) unsigned out_num; uint32_t opcode; uint8_t status = VIRTIO_CRYPTO_ERR; - uint64_t session_id; - CryptoDevBackendSymOpInfo *sym_op_info = NULL; + CryptoDevBackendOpInfo *op_info = &request->op_info; Error *local_err = NULL; if (elem->out_num < 1 || elem->in_num < 1) { @@ -639,15 +817,28 @@ virtio_crypto_handle_request(VirtIOCryptoReq *request) request->in_iov = in_iov; opcode = ldl_le_p(&req.header.opcode); - session_id = ldq_le_p(&req.header.session_id); + op_info->session_id = ldq_le_p(&req.header.session_id); + op_info->op_code = opcode; switch (opcode) { case VIRTIO_CRYPTO_CIPHER_ENCRYPT: case VIRTIO_CRYPTO_CIPHER_DECRYPT: + op_info->algtype = request->flags = CRYPTODEV_BACKEND_ALG_SYM; ret = virtio_crypto_handle_sym_req(vcrypto, - &req.u.sym_req, - &sym_op_info, + &req.u.sym_req, op_info, + out_iov, out_num); + goto check_result; + + case VIRTIO_CRYPTO_AKCIPHER_ENCRYPT: + case VIRTIO_CRYPTO_AKCIPHER_DECRYPT: + case VIRTIO_CRYPTO_AKCIPHER_SIGN: + case VIRTIO_CRYPTO_AKCIPHER_VERIFY: + op_info->algtype = request->flags = CRYPTODEV_BACKEND_ALG_ASYM; + ret = virtio_crypto_handle_asym_req(vcrypto, + &req.u.akcipher_req, op_info, out_iov, out_num); + +check_result: /* Serious errors, need to reset virtio crypto device */ if (ret == -EFAULT) { return -1; @@ -655,11 +846,8 @@ virtio_crypto_handle_request(VirtIOCryptoReq *request) virtio_crypto_req_complete(request, VIRTIO_CRYPTO_NOTSUPP); virtio_crypto_free_request(request); } else { - sym_op_info->session_id = session_id; /* Set request's parameter */ - request->flags = CRYPTODEV_BACKEND_ALG_SYM; - request->u.sym_op_info = sym_op_info; ret = cryptodev_backend_crypto_operation(vcrypto->cryptodev, request, queue_index, &local_err); if (ret < 0) { @@ -674,6 +862,7 @@ virtio_crypto_handle_request(VirtIOCryptoReq *request) virtio_crypto_free_request(request); } break; + case VIRTIO_CRYPTO_HASH: case VIRTIO_CRYPTO_MAC: case VIRTIO_CRYPTO_AEAD_ENCRYPT: @@ -779,6 +968,7 @@ static void virtio_crypto_init_config(VirtIODevice *vdev) vcrypto->conf.mac_algo_l = vcrypto->conf.cryptodev->conf.mac_algo_l; vcrypto->conf.mac_algo_h = vcrypto->conf.cryptodev->conf.mac_algo_h; vcrypto->conf.aead_algo = vcrypto->conf.cryptodev->conf.aead_algo; + vcrypto->conf.akcipher_algo = vcrypto->conf.cryptodev->conf.akcipher_algo; vcrypto->conf.max_cipher_key_len = vcrypto->conf.cryptodev->conf.max_cipher_key_len; vcrypto->conf.max_auth_key_len = @@ -891,6 +1081,7 @@ static void virtio_crypto_get_config(VirtIODevice *vdev, uint8_t *config) stl_le_p(&crypto_cfg.max_cipher_key_len, c->conf.max_cipher_key_len); stl_le_p(&crypto_cfg.max_auth_key_len, c->conf.max_auth_key_len); stq_le_p(&crypto_cfg.max_size, c->conf.max_size); + stl_le_p(&crypto_cfg.akcipher_algo, c->conf.akcipher_algo); memcpy(config, &crypto_cfg, c->config_size); } diff --git a/include/hw/virtio/virtio-crypto.h b/include/hw/virtio/virtio-crypto.h index a2228d7b2e..348749f5d5 100644 --- a/include/hw/virtio/virtio-crypto.h +++ b/include/hw/virtio/virtio-crypto.h @@ -50,6 +50,7 @@ typedef struct VirtIOCryptoConf { uint32_t mac_algo_l; uint32_t mac_algo_h; uint32_t aead_algo; + uint32_t akcipher_algo; /* Maximum length of cipher key */ uint32_t max_cipher_key_len; @@ -71,9 +72,7 @@ typedef struct VirtIOCryptoReq { size_t in_len; VirtQueue *vq; struct VirtIOCrypto *vcrypto; - union { - CryptoDevBackendSymOpInfo *sym_op_info; - } u; + CryptoDevBackendOpInfo op_info; } VirtIOCryptoReq; typedef struct VirtIOCryptoQueue { diff --git a/include/sysemu/cryptodev.h b/include/sysemu/cryptodev.h index f4d4057d4d..37c3a360fd 100644 --- a/include/sysemu/cryptodev.h +++ b/include/sysemu/cryptodev.h @@ -50,13 +50,13 @@ typedef struct CryptoDevBackendClient enum CryptoDevBackendAlgType { CRYPTODEV_BACKEND_ALG_SYM, + CRYPTODEV_BACKEND_ALG_ASYM, CRYPTODEV_BACKEND_ALG__MAX, }; /** * CryptoDevBackendSymSessionInfo: * - * @op_code: operation code (refer to virtio_crypto.h) * @cipher_alg: algorithm type of CIPHER * @key_len: byte length of cipher key * @hash_alg: algorithm type of HASH/MAC @@ -74,7 +74,6 @@ enum CryptoDevBackendAlgType { */ typedef struct CryptoDevBackendSymSessionInfo { /* corresponding with virtio crypto spec */ - uint32_t op_code; uint32_t cipher_alg; uint32_t key_len; uint32_t hash_alg; @@ -89,11 +88,36 @@ typedef struct CryptoDevBackendSymSessionInfo { uint8_t *auth_key; } CryptoDevBackendSymSessionInfo; +/** + * CryptoDevBackendAsymSessionInfo: + */ +typedef struct CryptoDevBackendRsaPara { + uint32_t padding_algo; + uint32_t hash_algo; +} CryptoDevBackendRsaPara; + +typedef struct CryptoDevBackendAsymSessionInfo { + /* corresponding with virtio crypto spec */ + uint32_t algo; + uint32_t keytype; + uint32_t keylen; + uint8_t *key; + union { + CryptoDevBackendRsaPara rsa; + } u; +} CryptoDevBackendAsymSessionInfo; + +typedef struct CryptoDevBackendSessionInfo { + uint32_t op_code; + union { + CryptoDevBackendSymSessionInfo sym_sess_info; + CryptoDevBackendAsymSessionInfo asym_sess_info; + } u; +} CryptoDevBackendSessionInfo; + /** * CryptoDevBackendSymOpInfo: * - * @session_id: session index which was previously - * created by cryptodev_backend_sym_create_session() * @aad_len: byte length of additional authenticated data * @iv_len: byte length of initialization vector or counter * @src_len: byte length of source data @@ -119,7 +143,6 @@ typedef struct CryptoDevBackendSymSessionInfo { * */ typedef struct CryptoDevBackendSymOpInfo { - uint64_t session_id; uint32_t aad_len; uint32_t iv_len; uint32_t src_len; @@ -138,6 +161,33 @@ typedef struct CryptoDevBackendSymOpInfo { uint8_t data[]; } CryptoDevBackendSymOpInfo; + +/** + * CryptoDevBackendAsymOpInfo: + * + * @src_len: byte length of source data + * @dst_len: byte length of destination data + * @src: point to the source data + * @dst: point to the destination data + * + */ +typedef struct CryptoDevBackendAsymOpInfo { + uint32_t src_len; + uint32_t dst_len; + uint8_t *src; + uint8_t *dst; +} CryptoDevBackendAsymOpInfo; + +typedef struct CryptoDevBackendOpInfo { + enum CryptoDevBackendAlgType algtype; + uint32_t op_code; + uint64_t session_id; + union { + CryptoDevBackendSymOpInfo *sym_op_info; + CryptoDevBackendAsymOpInfo *asym_op_info; + } u; +} CryptoDevBackendOpInfo; + struct CryptoDevBackendClass { ObjectClass parent_class; @@ -145,13 +195,13 @@ struct CryptoDevBackendClass { void (*cleanup)(CryptoDevBackend *backend, Error **errp); int64_t (*create_session)(CryptoDevBackend *backend, - CryptoDevBackendSymSessionInfo *sess_info, + CryptoDevBackendSessionInfo *sess_info, uint32_t queue_index, Error **errp); int (*close_session)(CryptoDevBackend *backend, uint64_t session_id, uint32_t queue_index, Error **errp); - int (*do_sym_op)(CryptoDevBackend *backend, - CryptoDevBackendSymOpInfo *op_info, + int (*do_op)(CryptoDevBackend *backend, + CryptoDevBackendOpInfo *op_info, uint32_t queue_index, Error **errp); }; @@ -190,6 +240,7 @@ struct CryptoDevBackendConf { uint32_t mac_algo_l; uint32_t mac_algo_h; uint32_t aead_algo; + uint32_t akcipher_algo; /* Maximum length of cipher key */ uint32_t max_cipher_key_len; /* Maximum length of authenticated key */ @@ -247,34 +298,34 @@ void cryptodev_backend_cleanup( Error **errp); /** - * cryptodev_backend_sym_create_session: + * cryptodev_backend_create_session: * @backend: the cryptodev backend object * @sess_info: parameters needed by session creating * @queue_index: queue index of cryptodev backend client * @errp: pointer to a NULL-initialized error object * - * Create a session for symmetric algorithms + * Create a session for symmetric/symmetric algorithms * * Returns: session id on success, or -1 on error */ -int64_t cryptodev_backend_sym_create_session( +int64_t cryptodev_backend_create_session( CryptoDevBackend *backend, - CryptoDevBackendSymSessionInfo *sess_info, + CryptoDevBackendSessionInfo *sess_info, uint32_t queue_index, Error **errp); /** - * cryptodev_backend_sym_close_session: + * cryptodev_backend_close_session: * @backend: the cryptodev backend object * @session_id: the session id * @queue_index: queue index of cryptodev backend client * @errp: pointer to a NULL-initialized error object * - * Close a session for symmetric algorithms which was previously - * created by cryptodev_backend_sym_create_session() + * Close a session for which was previously + * created by cryptodev_backend_create_session() * * Returns: 0 on success, or Negative on error */ -int cryptodev_backend_sym_close_session( +int cryptodev_backend_close_session( CryptoDevBackend *backend, uint64_t session_id, uint32_t queue_index, Error **errp);