2 *------------------------------------------------------------------
3 * Copyright (c) 2019 Cisco and/or its affiliates.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 *------------------------------------------------------------------
18 #include <openssl/evp.h>
19 #include <openssl/hmac.h>
20 #include <openssl/rand.h>
22 #include <vlib/vlib.h>
23 #include <vnet/plugin/plugin.h>
24 #include <vnet/crypto/crypto.h>
25 #include <vpp/app/version.h>
29 CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
30 EVP_CIPHER_CTX *evp_cipher_ctx;
32 #if OPENSSL_VERSION_NUMBER < 0x10100000L
35 } openssl_per_thread_data_t;
37 static openssl_per_thread_data_t *per_thread_data = 0;
39 #define foreach_openssl_evp_op \
40 _(DES_CBC, EVP_des_cbc) \
41 _(3DES_CBC, EVP_des_ede3_cbc) \
42 _(AES_128_CBC, EVP_aes_128_cbc) \
43 _(AES_192_CBC, EVP_aes_192_cbc) \
44 _(AES_256_CBC, EVP_aes_256_cbc)
46 #define foreach_openssl_hmac_op \
49 _(SHA224, EVP_sha224) \
50 _(SHA256, EVP_sha256) \
51 _(SHA384, EVP_sha384) \
54 static_always_inline u32
55 openssl_ops_enc_cbc (vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops,
56 const EVP_CIPHER * cipher)
58 openssl_per_thread_data_t *ptd = vec_elt_at_index (per_thread_data,
60 EVP_CIPHER_CTX *ctx = ptd->evp_cipher_ctx;
62 for (i = 0; i < n_ops; i++)
64 vnet_crypto_op_t *op = ops[i];
67 if (op->flags & VNET_CRYPTO_OP_FLAG_INIT_IV)
68 RAND_bytes (op->iv, 16);
70 EVP_EncryptInit_ex (ctx, cipher, NULL, op->key, op->iv);
71 EVP_EncryptUpdate (ctx, op->dst, &out_len, op->src, op->len);
72 if (out_len < op->len)
73 EVP_EncryptFinal_ex (ctx, op->dst + out_len, &out_len);
74 op->status = VNET_CRYPTO_OP_STATUS_COMPLETED;
79 static_always_inline u32
80 openssl_ops_dec_cbc (vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops,
81 const EVP_CIPHER * cipher)
83 openssl_per_thread_data_t *ptd = vec_elt_at_index (per_thread_data,
85 EVP_CIPHER_CTX *ctx = ptd->evp_cipher_ctx;
87 for (i = 0; i < n_ops; i++)
89 vnet_crypto_op_t *op = ops[i];
92 EVP_DecryptInit_ex (ctx, cipher, NULL, op->key, op->iv);
93 EVP_DecryptUpdate (ctx, op->dst, &out_len, op->src, op->len);
94 if (out_len < op->len)
95 EVP_DecryptFinal_ex (ctx, op->dst + out_len, &out_len);
96 op->status = VNET_CRYPTO_OP_STATUS_COMPLETED;
101 static_always_inline u32
102 openssl_ops_hmac (vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops,
106 openssl_per_thread_data_t *ptd = vec_elt_at_index (per_thread_data,
108 HMAC_CTX *ctx = ptd->hmac_ctx;
110 for (i = 0; i < n_ops; i++)
112 vnet_crypto_op_t *op = ops[i];
113 unsigned int out_len;
114 size_t sz = op->hmac_trunc_len ? op->hmac_trunc_len : EVP_MD_size (md);
116 HMAC_Init_ex (ctx, op->key, op->key_len, md, NULL);
117 HMAC_Update (ctx, op->src, op->len);
118 HMAC_Final (ctx, buffer, &out_len);
120 if (op->flags & VNET_CRYPTO_OP_FLAG_HMAC_CHECK)
122 if ((memcmp (op->dst, buffer, sz)))
125 op->status = VNET_CRYPTO_OP_STATUS_FAIL_BAD_HMAC;
130 clib_memcpy_fast (op->dst, buffer, sz);
131 op->status = VNET_CRYPTO_OP_STATUS_COMPLETED;
133 return n_ops - n_fail;
138 openssl_ops_enc_##a (vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops) \
139 { return openssl_ops_enc_cbc (vm, ops, n_ops, b ()); } \
142 openssl_ops_dec_##a (vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops) \
143 { return openssl_ops_dec_cbc (vm, ops, n_ops, b ()); }
145 foreach_openssl_evp_op;
150 openssl_ops_hmac_##a (vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops) \
151 { return openssl_ops_hmac (vm, ops, n_ops, b ()); } \
153 foreach_openssl_hmac_op;
158 crypto_openssl_init (vlib_main_t * vm)
160 vlib_thread_main_t *tm = vlib_get_thread_main ();
161 openssl_per_thread_data_t *ptd;
168 if ((error = vlib_call_init_function (vm, vnet_crypto_init)))
171 u32 eidx = vnet_crypto_register_engine (vm, "openssl", 50, "OpenSSL");
174 vnet_crypto_register_ops_handler (vm, eidx, VNET_CRYPTO_OP_##a##_ENC, \
175 openssl_ops_enc_##a); \
176 vnet_crypto_register_ops_handler (vm, eidx, VNET_CRYPTO_OP_##a##_DEC, \
177 openssl_ops_dec_##a);
179 foreach_openssl_evp_op;
183 vnet_crypto_register_ops_handler (vm, eidx, VNET_CRYPTO_OP_##a##_HMAC, \
184 openssl_ops_hmac_##a); \
186 foreach_openssl_hmac_op;
189 vec_validate_aligned (per_thread_data, tm->n_vlib_mains - 1,
190 CLIB_CACHE_LINE_BYTES);
192 vec_foreach (ptd, per_thread_data)
194 ptd->evp_cipher_ctx = EVP_CIPHER_CTX_new ();
195 #if OPENSSL_VERSION_NUMBER >= 0x10100000L
196 ptd->hmac_ctx = HMAC_CTX_new ();
198 HMAC_CTX_init (&(ptd->_hmac_ctx));
199 ptd->hmac_ctx = &ptd->_hmac_ctx;
205 vec_add (seed_data, &t, sizeof (t));
206 vec_add (seed_data, &pid, sizeof (pid));
207 vec_add (seed_data, seed_data, sizeof (seed_data));
209 RAND_seed ((const void *) seed_data, vec_len (seed_data));
211 vec_free (seed_data);
216 VLIB_INIT_FUNCTION (crypto_openssl_init);
219 VLIB_PLUGIN_REGISTER () = {
220 .version = VPP_BUILD_VER,
221 .description = "OpenSSL Crypto Engine Plugin",
226 * fd.io coding-style-patch-verification: ON
229 * eval: (c-set-style "gnu")