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Vector Packet Processing
quic_crypto.c
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1 /*
2  * Copyright (c) 2019 Cisco and/or its affiliates.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at:
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #include <quic/quic_crypto.h>
17 #include <quic/quic.h>
18 
19 #include <vnet/crypto/crypto.h>
20 
21 #include <picotls/openssl.h>
22 #include <quicly.h>
23 
24 typedef void (*quicly_do_transform_fn) (ptls_cipher_context_t *, void *,
25  const void *, size_t);
26 
28 {
29  ptls_cipher_context_t super;
32 };
33 
35 {
36  ptls_aead_context_t super;
39 };
40 
42 
43 static void
44 quic_crypto_cipher_do_init (ptls_cipher_context_t * _ctx, const void *iv)
45 {
46  struct cipher_context_t *ctx = (struct cipher_context_t *) _ctx;
47 
49  if (!strcmp (ctx->super.algo->name, "AES128-CTR"))
50  {
51  id = VNET_CRYPTO_OP_AES_128_CTR_ENC;
52  }
53  else if (!strcmp (ctx->super.algo->name, "AES256-CTR"))
54  {
55  id = VNET_CRYPTO_OP_AES_256_CTR_ENC;
56  }
57  else
58  {
59  QUIC_DBG (1, "%s, Invalid crypto cipher : ", __FUNCTION__,
60  _ctx->algo->name);
61  assert (0);
62  }
63 
64  vnet_crypto_op_init (&ctx->op, id);
65  ctx->op.iv = (u8 *) iv;
66  ctx->op.key_index = ctx->key_index;
67 }
68 
69 static void
70 quic_crypto_cipher_dispose (ptls_cipher_context_t * _ctx)
71 {
72  /* Do nothing */
73 }
74 
75 static void
76 quic_crypto_cipher_encrypt (ptls_cipher_context_t * _ctx, void *output,
77  const void *input, size_t _len)
78 {
80  struct cipher_context_t *ctx = (struct cipher_context_t *) _ctx;
81 
82  ctx->op.src = (u8 *) input;
83  ctx->op.dst = output;
84  ctx->op.len = _len;
85 
86  vnet_crypto_process_ops (vm, &ctx->op, 1);
87 }
88 
89 static int
90 quic_crypto_cipher_setup_crypto (ptls_cipher_context_t * _ctx, int is_enc,
91  const void *key, const EVP_CIPHER * cipher,
92  quicly_do_transform_fn do_transform)
93 {
94  struct cipher_context_t *ctx = (struct cipher_context_t *) _ctx;
95 
96  ctx->super.do_dispose = quic_crypto_cipher_dispose;
97  ctx->super.do_init = quic_crypto_cipher_do_init;
98  ctx->super.do_transform = do_transform;
99 
101  vnet_crypto_alg_t algo;
102  if (!strcmp (ctx->super.algo->name, "AES128-CTR"))
103  {
104  algo = VNET_CRYPTO_ALG_AES_128_CTR;
105  }
106  else if (!strcmp (ctx->super.algo->name, "AES256-CTR"))
107  {
108  algo = VNET_CRYPTO_ALG_AES_256_CTR;
109  }
110  else
111  {
112  QUIC_DBG (1, "%s, Invalid crypto cipher : ", __FUNCTION__,
113  _ctx->algo->name);
114  assert (0);
115  }
116 
117  ctx->key_index = vnet_crypto_key_add (vm, algo,
118  (u8 *) key, _ctx->algo->key_size);
119 
120  return 0;
121 }
122 
123 static int
124 aes128ctr_setup_crypto (ptls_cipher_context_t * ctx, int is_enc,
125  const void *key)
126 {
127  return quic_crypto_cipher_setup_crypto (ctx, 1, key, EVP_aes_128_ctr (),
129 }
130 
131 static int
132 aes256ctr_setup_crypto (ptls_cipher_context_t * ctx, int is_enc,
133  const void *key)
134 {
135  return quic_crypto_cipher_setup_crypto (ctx, 1, key, EVP_aes_256_ctr (),
137 }
138 
139 size_t
140 quic_crypto_aead_encrypt (ptls_aead_context_t * _ctx, void *output,
141  const void *input, size_t inlen, uint64_t seq,
142  const void *iv, const void *aad, size_t aadlen)
143 {
145  struct aead_crypto_context_t *ctx = (struct aead_crypto_context_t *) _ctx;
146 
148  if (!strcmp (ctx->super.algo->name, "AES128-GCM"))
149  {
150  id = VNET_CRYPTO_OP_AES_128_GCM_ENC;
151  }
152  else if (!strcmp (ctx->super.algo->name, "AES256-GCM"))
153  {
154  id = VNET_CRYPTO_OP_AES_256_GCM_ENC;
155  }
156  else
157  {
158  assert (0);
159  }
160 
161  vnet_crypto_op_init (&ctx->op, id);
162  ctx->op.aad = (u8 *) aad;
163  ctx->op.aad_len = aadlen;
164  ctx->op.iv = (u8 *) iv;
165 
166  ctx->op.src = (u8 *) input;
167  ctx->op.dst = output;
168  ctx->op.key_index = ctx->key_index;
169  ctx->op.len = inlen;
170 
171  ctx->op.tag_len = ctx->super.algo->tag_size;
172  ctx->op.tag = ctx->op.src + inlen;
173 
174  vnet_crypto_process_ops (vm, &ctx->op, 1);
175 
176  return ctx->op.len + ctx->op.tag_len;
177 }
178 
179 size_t
180 quic_crypto_aead_decrypt (ptls_aead_context_t * _ctx, void *_output,
181  const void *input, size_t inlen, const void *iv,
182  const void *aad, size_t aadlen)
183 {
185  struct aead_crypto_context_t *ctx = (struct aead_crypto_context_t *) _ctx;
186 
188  if (!strcmp (ctx->super.algo->name, "AES128-GCM"))
189  {
190  id = VNET_CRYPTO_OP_AES_128_GCM_DEC;
191  }
192  else if (!strcmp (ctx->super.algo->name, "AES256-GCM"))
193  {
194  id = VNET_CRYPTO_OP_AES_256_GCM_DEC;
195  }
196  else
197  {
198  assert (0);
199  }
200 
201  vnet_crypto_op_init (&ctx->op, id);
202  ctx->op.aad = (u8 *) aad;
203  ctx->op.aad_len = aadlen;
204  ctx->op.iv = (u8 *) iv;
205 
206  ctx->op.src = (u8 *) input;
207  ctx->op.dst = _output;
208  ctx->op.key_index = ctx->key_index;
209  ctx->op.len = inlen - ctx->super.algo->tag_size;
210 
211  ctx->op.tag_len = ctx->super.algo->tag_size;
212  ctx->op.tag = ctx->op.src + ctx->op.len;
213 
214  vnet_crypto_process_ops (vm, &ctx->op, 1);
215 
216  return ctx->op.len;
217 }
218 
219 static void
220 quic_crypto_aead_dispose_crypto (ptls_aead_context_t * _ctx)
221 {
222 
223 }
224 
225 static int
226 quic_crypto_aead_setup_crypto (ptls_aead_context_t * _ctx, int is_enc,
227  const void *key, const EVP_CIPHER * cipher)
228 {
230  struct aead_crypto_context_t *ctx = (struct aead_crypto_context_t *) _ctx;
231 
232  vnet_crypto_alg_t algo;
233  if (!strcmp (ctx->super.algo->name, "AES128-GCM"))
234  {
235  algo = VNET_CRYPTO_ALG_AES_128_GCM;
236  }
237  else if (!strcmp (ctx->super.algo->name, "AES256-GCM"))
238  {
239  algo = VNET_CRYPTO_ALG_AES_256_GCM;
240  }
241  else
242  {
243  QUIC_DBG (1, "%s, invalied aead cipher %s", __FUNCTION__,
244  _ctx->algo->name);
245  assert (0);
246  }
247 
248  ctx->super.do_decrypt = quic_crypto_aead_decrypt;
249  ctx->super.do_encrypt = quic_crypto_aead_encrypt;
250  ctx->super.dispose_crypto = quic_crypto_aead_dispose_crypto;
251 
252  ctx->key_index = vnet_crypto_key_add (vm, algo,
253  (u8 *) key, _ctx->algo->key_size);
254 
255  return 0;
256 }
257 
258 static int
260  int is_enc, const void *key)
261 {
262  return quic_crypto_aead_setup_crypto (ctx, is_enc, key, EVP_aes_128_gcm ());
263 }
264 
265 static int
267  int is_enc, const void *key)
268 {
269  return quic_crypto_aead_setup_crypto (ctx, is_enc, key, EVP_aes_256_gcm ());
270 }
271 
272 ptls_cipher_algorithm_t quic_crypto_aes128ctr = { "AES128-CTR",
273  PTLS_AES128_KEY_SIZE,
274  1, PTLS_AES_IV_SIZE,
275  sizeof (struct cipher_context_t),
276  aes128ctr_setup_crypto
277 };
278 
279 ptls_cipher_algorithm_t quic_crypto_aes256ctr = { "AES256-CTR",
280  PTLS_AES256_KEY_SIZE,
281  1 /* block size */ ,
282  PTLS_AES_IV_SIZE,
283  sizeof (struct cipher_context_t),
284  aes256ctr_setup_crypto
285 };
286 
287 ptls_aead_algorithm_t quic_crypto_aes128gcm = { "AES128-GCM",
289  NULL,
290  PTLS_AES128_KEY_SIZE,
291  PTLS_AESGCM_IV_SIZE,
292  PTLS_AESGCM_TAG_SIZE,
293  sizeof (struct aead_crypto_context_t),
294  quic_crypto_aead_aes128gcm_setup_crypto
295 };
296 
297 ptls_aead_algorithm_t quic_crypto_aes256gcm = { "AES256-GCM",
299  NULL,
300  PTLS_AES256_KEY_SIZE,
301  PTLS_AESGCM_IV_SIZE,
302  PTLS_AESGCM_TAG_SIZE,
303  sizeof (struct aead_crypto_context_t),
304  quic_crypto_aead_aes256gcm_setup_crypto
305 };
306 
307 ptls_cipher_suite_t quic_crypto_aes128gcmsha256 =
308  { PTLS_CIPHER_SUITE_AES_128_GCM_SHA256,
310  &ptls_openssl_sha256
311 };
312 
313 ptls_cipher_suite_t quic_crypto_aes256gcmsha384 =
314  { PTLS_CIPHER_SUITE_AES_256_GCM_SHA384,
316  &ptls_openssl_sha384
317 };
318 
319 ptls_cipher_suite_t *quic_crypto_cipher_suites[] =
322  NULL
323 };
324 
325 /*
326  * fd.io coding-style-patch-verification: ON
327  *
328  * Local Variables:
329  * eval: (c-set-style "gnu")
330  * End:
331  */
u32 vnet_crypto_process_ops(vlib_main_t *vm, vnet_crypto_op_t ops[], u32 n_ops)
Definition: crypto.c:46
ptls_cipher_context_t super
Definition: quic_crypto.c:29
static int aes256ctr_setup_crypto(ptls_cipher_context_t *ctx, int is_enc, const void *key)
Definition: quic_crypto.c:132
unsigned char u8
Definition: types.h:56
size_t quic_crypto_aead_decrypt(ptls_aead_context_t *_ctx, void *_output, const void *input, size_t inlen, const void *iv, const void *aad, size_t aadlen)
Definition: quic_crypto.c:180
#define QUIC_DBG(_lvl, _fmt, _args...)
Definition: quic.h:65
#define assert(x)
Definition: dlmalloc.c:30
static_always_inline void vnet_crypto_op_init(vnet_crypto_op_t *op, vnet_crypto_op_id_t type)
Definition: crypto.h:221
ptls_cipher_algorithm_t quic_crypto_aes128ctr
Definition: quic_crypto.c:272
static int quic_crypto_aead_setup_crypto(ptls_aead_context_t *_ctx, int is_enc, const void *key, const EVP_CIPHER *cipher)
Definition: quic_crypto.c:226
unsigned int u32
Definition: types.h:88
vnet_crypto_op_t op
Definition: quic_crypto.c:30
static int quic_crypto_aead_aes256gcm_setup_crypto(ptls_aead_context_t *ctx, int is_enc, const void *key)
Definition: quic_crypto.c:266
u32 vnet_crypto_key_add(vlib_main_t *vm, vnet_crypto_alg_t alg, u8 *data, u16 length)
Definition: crypto.c:207
vnet_crypto_alg_t
Definition: crypto.h:86
static u8 iv[]
Definition: aes_cbc.c:24
ptls_cipher_suite_t quic_crypto_aes256gcmsha384
Definition: quic_crypto.c:313
long ctx[MAX_CONNS]
Definition: main.c:144
static int quic_crypto_aead_aes128gcm_setup_crypto(ptls_aead_context_t *ctx, int is_enc, const void *key)
Definition: quic_crypto.c:259
size_t quic_crypto_aead_encrypt(ptls_aead_context_t *_ctx, void *output, const void *input, size_t inlen, uint64_t seq, const void *iv, const void *aad, size_t aadlen)
Definition: quic_crypto.c:140
vlib_main_t * vm
Definition: buffer.c:323
void(* quicly_do_transform_fn)(ptls_cipher_context_t *, void *, const void *, size_t)
Definition: quic_crypto.c:24
ptls_cipher_suite_t quic_crypto_aes128gcmsha256
Definition: quic_crypto.c:307
static void quic_crypto_cipher_do_init(ptls_cipher_context_t *_ctx, const void *iv)
Definition: quic_crypto.c:44
static vlib_main_t * vlib_get_main(void)
Definition: global_funcs.h:23
static void quic_crypto_aead_dispose_crypto(ptls_aead_context_t *_ctx)
Definition: quic_crypto.c:220
ptls_cipher_algorithm_t quic_crypto_aes256ctr
Definition: quic_crypto.c:279
vnet_crypto_op_t op
Definition: quic_crypto.c:37
static void quic_crypto_cipher_dispose(ptls_cipher_context_t *_ctx)
Definition: quic_crypto.c:70
ptls_aead_algorithm_t quic_crypto_aes256gcm
Definition: quic_crypto.c:297
typedef key
Definition: ipsec.api:247
ptls_aead_context_t super
Definition: quic_crypto.c:36
vnet_crypto_op_id_t
Definition: crypto.h:105
u32 id
Definition: udp.api:45
vnet_crypto_main_t crypto_main
Definition: crypto.c:20
static int quic_crypto_cipher_setup_crypto(ptls_cipher_context_t *_ctx, int is_enc, const void *key, const EVP_CIPHER *cipher, quicly_do_transform_fn do_transform)
Definition: quic_crypto.c:90
ptls_aead_algorithm_t quic_crypto_aes128gcm
Definition: quic_crypto.c:287
static int aes128ctr_setup_crypto(ptls_cipher_context_t *ctx, int is_enc, const void *key)
Definition: quic_crypto.c:124
static void quic_crypto_cipher_encrypt(ptls_cipher_context_t *_ctx, void *output, const void *input, size_t _len)
Definition: quic_crypto.c:76