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 _(cbc, DES_CBC, EVP_des_cbc) \
41 _(cbc, 3DES_CBC, EVP_des_ede3_cbc) \
42 _(cbc, AES_128_CBC, EVP_aes_128_cbc) \
43 _(cbc, AES_192_CBC, EVP_aes_192_cbc) \
44 _(cbc, AES_256_CBC, EVP_aes_256_cbc) \
45 _(gcm, AES_128_GCM, EVP_aes_128_gcm) \
46 _(gcm, AES_192_GCM, EVP_aes_192_gcm) \
47 _(gcm, AES_256_GCM, EVP_aes_256_gcm)
49 #define foreach_openssl_hmac_op \
52 _(SHA224, EVP_sha224) \
53 _(SHA256, EVP_sha256) \
54 _(SHA384, EVP_sha384) \
57 static_always_inline u32
58 openssl_ops_enc_cbc (vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops,
59 const EVP_CIPHER * cipher)
61 openssl_per_thread_data_t *ptd = vec_elt_at_index (per_thread_data,
63 EVP_CIPHER_CTX *ctx = ptd->evp_cipher_ctx;
65 for (i = 0; i < n_ops; i++)
67 vnet_crypto_op_t *op = ops[i];
70 if (op->flags & VNET_CRYPTO_OP_FLAG_INIT_IV)
71 RAND_bytes (op->iv, 16);
73 EVP_EncryptInit_ex (ctx, cipher, NULL, op->key, op->iv);
74 EVP_EncryptUpdate (ctx, op->dst, &out_len, op->src, op->len);
75 if (out_len < op->len)
76 EVP_EncryptFinal_ex (ctx, op->dst + out_len, &out_len);
77 op->status = VNET_CRYPTO_OP_STATUS_COMPLETED;
82 static_always_inline u32
83 openssl_ops_dec_cbc (vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops,
84 const EVP_CIPHER * cipher)
86 openssl_per_thread_data_t *ptd = vec_elt_at_index (per_thread_data,
88 EVP_CIPHER_CTX *ctx = ptd->evp_cipher_ctx;
90 for (i = 0; i < n_ops; i++)
92 vnet_crypto_op_t *op = ops[i];
95 EVP_DecryptInit_ex (ctx, cipher, NULL, op->key, op->iv);
96 EVP_DecryptUpdate (ctx, op->dst, &out_len, op->src, op->len);
97 if (out_len < op->len)
98 EVP_DecryptFinal_ex (ctx, op->dst + out_len, &out_len);
99 op->status = VNET_CRYPTO_OP_STATUS_COMPLETED;
104 static_always_inline u32
105 openssl_ops_enc_gcm (vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops,
106 const EVP_CIPHER * cipher)
108 openssl_per_thread_data_t *ptd = vec_elt_at_index (per_thread_data,
110 EVP_CIPHER_CTX *ctx = ptd->evp_cipher_ctx;
112 for (i = 0; i < n_ops; i++)
114 vnet_crypto_op_t *op = ops[i];
117 if (op->flags & VNET_CRYPTO_OP_FLAG_INIT_IV)
118 RAND_bytes (op->iv, 8);
120 EVP_EncryptInit_ex (ctx, cipher, 0, 0, 0);
121 EVP_CIPHER_CTX_ctrl (ctx, EVP_CTRL_GCM_SET_IVLEN, 8, NULL);
122 EVP_EncryptInit_ex (ctx, 0, 0, op->key, op->iv);
123 EVP_EncryptUpdate (ctx, NULL, &len, op->aad, op->aad_len);
124 EVP_EncryptUpdate (ctx, op->dst, &len, op->src, op->len);
125 EVP_EncryptFinal_ex (ctx, op->dst + len, &len);
126 EVP_CIPHER_CTX_ctrl (ctx, EVP_CTRL_GCM_GET_TAG, op->tag_len, op->tag);
127 op->status = VNET_CRYPTO_OP_STATUS_COMPLETED;
132 static_always_inline u32
133 openssl_ops_dec_gcm (vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops,
134 const EVP_CIPHER * cipher)
136 openssl_per_thread_data_t *ptd = vec_elt_at_index (per_thread_data,
138 EVP_CIPHER_CTX *ctx = ptd->evp_cipher_ctx;
140 for (i = 0; i < n_ops; i++)
142 vnet_crypto_op_t *op = ops[i];
145 EVP_DecryptInit_ex (ctx, cipher, 0, 0, 0);
146 EVP_CIPHER_CTX_ctrl (ctx, EVP_CTRL_GCM_SET_IVLEN, op->iv_len, 0);
147 EVP_DecryptInit_ex (ctx, 0, 0, op->key, op->iv);
148 EVP_DecryptUpdate (ctx, 0, &len, op->aad, op->aad_len);
149 EVP_DecryptUpdate (ctx, op->dst, &len, op->src, op->len);
150 EVP_CIPHER_CTX_ctrl (ctx, EVP_CTRL_GCM_SET_TAG, op->tag_len, op->tag);
152 if (EVP_DecryptFinal_ex (ctx, op->dst + len, &len) > 0)
153 op->status = VNET_CRYPTO_OP_STATUS_COMPLETED;
157 op->status = VNET_CRYPTO_OP_STATUS_FAIL_DECRYPT;
160 return n_ops - n_fail;
163 static_always_inline u32
164 openssl_ops_hmac (vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops,
168 openssl_per_thread_data_t *ptd = vec_elt_at_index (per_thread_data,
170 HMAC_CTX *ctx = ptd->hmac_ctx;
172 for (i = 0; i < n_ops; i++)
174 vnet_crypto_op_t *op = ops[i];
175 unsigned int out_len;
176 size_t sz = op->digest_len ? op->digest_len : EVP_MD_size (md);
178 HMAC_Init_ex (ctx, op->key, op->key_len, md, NULL);
179 HMAC_Update (ctx, op->src, op->len);
180 HMAC_Final (ctx, buffer, &out_len);
182 if (op->flags & VNET_CRYPTO_OP_FLAG_HMAC_CHECK)
184 if ((memcmp (op->digest, buffer, sz)))
187 op->status = VNET_CRYPTO_OP_STATUS_FAIL_BAD_HMAC;
192 clib_memcpy_fast (op->digest, buffer, sz);
193 op->status = VNET_CRYPTO_OP_STATUS_COMPLETED;
195 return n_ops - n_fail;
200 openssl_ops_enc_##a (vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops) \
201 { return openssl_ops_enc_##m (vm, ops, n_ops, b ()); } \
204 openssl_ops_dec_##a (vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops) \
205 { return openssl_ops_dec_##m (vm, ops, n_ops, b ()); }
207 foreach_openssl_evp_op;
212 openssl_ops_hmac_##a (vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops) \
213 { return openssl_ops_hmac (vm, ops, n_ops, b ()); } \
215 foreach_openssl_hmac_op;
220 crypto_openssl_init (vlib_main_t * vm)
222 vlib_thread_main_t *tm = vlib_get_thread_main ();
223 openssl_per_thread_data_t *ptd;
229 if ((error = vlib_call_init_function (vm, vnet_crypto_init)))
232 u32 eidx = vnet_crypto_register_engine (vm, "openssl", 50, "OpenSSL");
235 vnet_crypto_register_ops_handler (vm, eidx, VNET_CRYPTO_OP_##a##_ENC, \
236 openssl_ops_enc_##a); \
237 vnet_crypto_register_ops_handler (vm, eidx, VNET_CRYPTO_OP_##a##_DEC, \
238 openssl_ops_dec_##a);
240 foreach_openssl_evp_op;
244 vnet_crypto_register_ops_handler (vm, eidx, VNET_CRYPTO_OP_##a##_HMAC, \
245 openssl_ops_hmac_##a); \
247 foreach_openssl_hmac_op;
250 vec_validate_aligned (per_thread_data, tm->n_vlib_mains - 1,
251 CLIB_CACHE_LINE_BYTES);
253 vec_foreach (ptd, per_thread_data)
255 ptd->evp_cipher_ctx = EVP_CIPHER_CTX_new ();
256 #if OPENSSL_VERSION_NUMBER >= 0x10100000L
257 ptd->hmac_ctx = HMAC_CTX_new ();
259 HMAC_CTX_init (&(ptd->_hmac_ctx));
260 ptd->hmac_ctx = &ptd->_hmac_ctx;
266 vec_add (seed_data, &t, sizeof (t));
267 vec_add (seed_data, &pid, sizeof (pid));
268 vec_add (seed_data, seed_data, sizeof (seed_data));
270 RAND_seed ((const void *) seed_data, vec_len (seed_data));
272 vec_free (seed_data);
277 VLIB_INIT_FUNCTION (crypto_openssl_init);
280 VLIB_PLUGIN_REGISTER () = {
281 .version = VPP_BUILD_VER,
282 .description = "OpenSSL Crypto Engine Plugin",
287 * fd.io coding-style-patch-verification: ON
290 * eval: (c-set-style "gnu")