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) \
48 _(cbc, AES_128_CTR, EVP_aes_128_ctr) \
49 _(cbc, AES_192_CTR, EVP_aes_192_ctr) \
50 _(cbc, AES_256_CTR, EVP_aes_256_ctr) \
52 #define foreach_openssl_hmac_op \
55 _(SHA224, EVP_sha224) \
56 _(SHA256, EVP_sha256) \
57 _(SHA384, EVP_sha384) \
60 static_always_inline u32
61 openssl_ops_enc_cbc (vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops,
62 const EVP_CIPHER * cipher)
64 openssl_per_thread_data_t *ptd = vec_elt_at_index (per_thread_data,
66 EVP_CIPHER_CTX *ctx = ptd->evp_cipher_ctx;
68 for (i = 0; i < n_ops; i++)
70 vnet_crypto_op_t *op = ops[i];
71 vnet_crypto_key_t *key = vnet_crypto_get_key (op->key_index);
74 if (op->flags & VNET_CRYPTO_OP_FLAG_INIT_IV)
75 RAND_bytes (op->iv, 16);
77 EVP_EncryptInit_ex (ctx, cipher, NULL, key->data, op->iv);
78 EVP_EncryptUpdate (ctx, op->dst, &out_len, op->src, op->len);
79 if (out_len < op->len)
80 EVP_EncryptFinal_ex (ctx, op->dst + out_len, &out_len);
81 op->status = VNET_CRYPTO_OP_STATUS_COMPLETED;
86 static_always_inline u32
87 openssl_ops_dec_cbc (vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops,
88 const EVP_CIPHER * cipher)
90 openssl_per_thread_data_t *ptd = vec_elt_at_index (per_thread_data,
92 EVP_CIPHER_CTX *ctx = ptd->evp_cipher_ctx;
94 for (i = 0; i < n_ops; i++)
96 vnet_crypto_op_t *op = ops[i];
97 vnet_crypto_key_t *key = vnet_crypto_get_key (op->key_index);
100 EVP_DecryptInit_ex (ctx, cipher, NULL, key->data, op->iv);
101 EVP_DecryptUpdate (ctx, op->dst, &out_len, op->src, op->len);
102 if (out_len < op->len)
103 EVP_DecryptFinal_ex (ctx, op->dst + out_len, &out_len);
104 op->status = VNET_CRYPTO_OP_STATUS_COMPLETED;
109 static_always_inline u32
110 openssl_ops_enc_gcm (vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops,
111 const EVP_CIPHER * cipher)
113 openssl_per_thread_data_t *ptd = vec_elt_at_index (per_thread_data,
115 EVP_CIPHER_CTX *ctx = ptd->evp_cipher_ctx;
117 for (i = 0; i < n_ops; i++)
119 vnet_crypto_op_t *op = ops[i];
120 vnet_crypto_key_t *key = vnet_crypto_get_key (op->key_index);
123 if (op->flags & VNET_CRYPTO_OP_FLAG_INIT_IV)
124 RAND_bytes (op->iv, 8);
126 EVP_EncryptInit_ex (ctx, cipher, 0, 0, 0);
127 EVP_CIPHER_CTX_ctrl (ctx, EVP_CTRL_GCM_SET_IVLEN, 12, NULL);
128 EVP_EncryptInit_ex (ctx, 0, 0, key->data, op->iv);
130 EVP_EncryptUpdate (ctx, NULL, &len, op->aad, op->aad_len);
131 EVP_EncryptUpdate (ctx, op->dst, &len, op->src, op->len);
132 EVP_EncryptFinal_ex (ctx, op->dst + len, &len);
133 EVP_CIPHER_CTX_ctrl (ctx, EVP_CTRL_GCM_GET_TAG, op->tag_len, op->tag);
134 op->status = VNET_CRYPTO_OP_STATUS_COMPLETED;
139 static_always_inline u32
140 openssl_ops_dec_gcm (vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops,
141 const EVP_CIPHER * cipher)
143 openssl_per_thread_data_t *ptd = vec_elt_at_index (per_thread_data,
145 EVP_CIPHER_CTX *ctx = ptd->evp_cipher_ctx;
147 for (i = 0; i < n_ops; i++)
149 vnet_crypto_op_t *op = ops[i];
150 vnet_crypto_key_t *key = vnet_crypto_get_key (op->key_index);
153 EVP_DecryptInit_ex (ctx, cipher, 0, 0, 0);
154 EVP_CIPHER_CTX_ctrl (ctx, EVP_CTRL_GCM_SET_IVLEN, 12, 0);
155 EVP_DecryptInit_ex (ctx, 0, 0, key->data, op->iv);
157 EVP_DecryptUpdate (ctx, 0, &len, op->aad, op->aad_len);
158 EVP_DecryptUpdate (ctx, op->dst, &len, op->src, op->len);
159 EVP_CIPHER_CTX_ctrl (ctx, EVP_CTRL_GCM_SET_TAG, op->tag_len, op->tag);
161 if (EVP_DecryptFinal_ex (ctx, op->dst + len, &len) > 0)
162 op->status = VNET_CRYPTO_OP_STATUS_COMPLETED;
166 op->status = VNET_CRYPTO_OP_STATUS_FAIL_DECRYPT;
169 return n_ops - n_fail;
172 static_always_inline u32
173 openssl_ops_hmac (vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops,
177 openssl_per_thread_data_t *ptd = vec_elt_at_index (per_thread_data,
179 HMAC_CTX *ctx = ptd->hmac_ctx;
181 for (i = 0; i < n_ops; i++)
183 vnet_crypto_op_t *op = ops[i];
184 vnet_crypto_key_t *key = vnet_crypto_get_key (op->key_index);
185 unsigned int out_len;
186 size_t sz = op->digest_len ? op->digest_len : EVP_MD_size (md);
188 HMAC_Init_ex (ctx, key->data, vec_len (key->data), md, NULL);
189 HMAC_Update (ctx, op->src, op->len);
190 HMAC_Final (ctx, buffer, &out_len);
192 if (op->flags & VNET_CRYPTO_OP_FLAG_HMAC_CHECK)
194 if ((memcmp (op->digest, buffer, sz)))
197 op->status = VNET_CRYPTO_OP_STATUS_FAIL_BAD_HMAC;
202 clib_memcpy_fast (op->digest, buffer, sz);
203 op->status = VNET_CRYPTO_OP_STATUS_COMPLETED;
205 return n_ops - n_fail;
210 openssl_ops_enc_##a (vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops) \
211 { return openssl_ops_enc_##m (vm, ops, n_ops, b ()); } \
214 openssl_ops_dec_##a (vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops) \
215 { return openssl_ops_dec_##m (vm, ops, n_ops, b ()); }
217 foreach_openssl_evp_op;
222 openssl_ops_hmac_##a (vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops) \
223 { return openssl_ops_hmac (vm, ops, n_ops, b ()); } \
225 foreach_openssl_hmac_op;
230 crypto_openssl_init (vlib_main_t * vm)
232 vlib_thread_main_t *tm = vlib_get_thread_main ();
233 openssl_per_thread_data_t *ptd;
238 u32 eidx = vnet_crypto_register_engine (vm, "openssl", 50, "OpenSSL");
241 vnet_crypto_register_ops_handler (vm, eidx, VNET_CRYPTO_OP_##a##_ENC, \
242 openssl_ops_enc_##a); \
243 vnet_crypto_register_ops_handler (vm, eidx, VNET_CRYPTO_OP_##a##_DEC, \
244 openssl_ops_dec_##a);
246 foreach_openssl_evp_op;
250 vnet_crypto_register_ops_handler (vm, eidx, VNET_CRYPTO_OP_##a##_HMAC, \
251 openssl_ops_hmac_##a); \
253 foreach_openssl_hmac_op;
256 vec_validate_aligned (per_thread_data, tm->n_vlib_mains - 1,
257 CLIB_CACHE_LINE_BYTES);
259 vec_foreach (ptd, per_thread_data)
261 ptd->evp_cipher_ctx = EVP_CIPHER_CTX_new ();
262 #if OPENSSL_VERSION_NUMBER >= 0x10100000L
263 ptd->hmac_ctx = HMAC_CTX_new ();
265 HMAC_CTX_init (&(ptd->_hmac_ctx));
266 ptd->hmac_ctx = &ptd->_hmac_ctx;
272 vec_add (seed_data, &t, sizeof (t));
273 vec_add (seed_data, &pid, sizeof (pid));
274 vec_add (seed_data, seed_data, sizeof (seed_data));
276 RAND_seed ((const void *) seed_data, vec_len (seed_data));
278 vec_free (seed_data);
284 VLIB_INIT_FUNCTION (crypto_openssl_init) =
286 .runs_after = VLIB_INITS ("vnet_crypto_init"),
292 VLIB_PLUGIN_REGISTER () = {
293 .version = VPP_BUILD_VER,
294 .description = "OpenSSL Crypto Engine",
299 * fd.io coding-style-patch-verification: ON
302 * eval: (c-set-style "gnu")