2 * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
11 #include "internal/cryptlib.h"
12 #include <openssl/evp.h>
13 #include <openssl/objects.h>
14 #include "internal/evp_int.h"
15 #include "internal/provider.h"
18 int EVP_CIPHER_param_to_asn1(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
22 if (c->cipher->set_asn1_parameters != NULL)
23 ret = c->cipher->set_asn1_parameters(c, type);
24 else if (c->cipher->flags & EVP_CIPH_FLAG_DEFAULT_ASN1) {
25 switch (EVP_CIPHER_CTX_mode(c)) {
26 case EVP_CIPH_WRAP_MODE:
27 if (EVP_CIPHER_CTX_nid(c) == NID_id_smime_alg_CMS3DESwrap)
28 ASN1_TYPE_set(type, V_ASN1_NULL, NULL);
32 case EVP_CIPH_GCM_MODE:
33 case EVP_CIPH_CCM_MODE:
34 case EVP_CIPH_XTS_MODE:
35 case EVP_CIPH_OCB_MODE:
40 ret = EVP_CIPHER_set_asn1_iv(c, type);
45 EVPerr(EVP_F_EVP_CIPHER_PARAM_TO_ASN1, ret == -2 ?
46 ASN1_R_UNSUPPORTED_CIPHER :
47 EVP_R_CIPHER_PARAMETER_ERROR);
53 int EVP_CIPHER_asn1_to_param(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
57 if (c->cipher->get_asn1_parameters != NULL)
58 ret = c->cipher->get_asn1_parameters(c, type);
59 else if (c->cipher->flags & EVP_CIPH_FLAG_DEFAULT_ASN1) {
60 switch (EVP_CIPHER_CTX_mode(c)) {
62 case EVP_CIPH_WRAP_MODE:
66 case EVP_CIPH_GCM_MODE:
67 case EVP_CIPH_CCM_MODE:
68 case EVP_CIPH_XTS_MODE:
69 case EVP_CIPH_OCB_MODE:
74 ret = EVP_CIPHER_get_asn1_iv(c, type);
80 EVPerr(EVP_F_EVP_CIPHER_ASN1_TO_PARAM, ret == -2 ?
81 EVP_R_UNSUPPORTED_CIPHER :
82 EVP_R_CIPHER_PARAMETER_ERROR);
88 int EVP_CIPHER_get_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
94 l = EVP_CIPHER_CTX_iv_length(c);
95 OPENSSL_assert(l <= sizeof(c->iv));
96 i = ASN1_TYPE_get_octetstring(type, c->oiv, l);
100 memcpy(c->iv, c->oiv, l);
105 int EVP_CIPHER_set_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
111 j = EVP_CIPHER_CTX_iv_length(c);
112 OPENSSL_assert(j <= sizeof(c->iv));
113 i = ASN1_TYPE_set_octetstring(type, c->oiv, j);
118 /* Convert the various cipher NIDs and dummies to a proper OID NID */
119 int EVP_CIPHER_type(const EVP_CIPHER *ctx)
123 nid = EVP_CIPHER_nid(ctx);
138 case NID_aes_128_cfb128:
139 case NID_aes_128_cfb8:
140 case NID_aes_128_cfb1:
142 return NID_aes_128_cfb128;
144 case NID_aes_192_cfb128:
145 case NID_aes_192_cfb8:
146 case NID_aes_192_cfb1:
148 return NID_aes_192_cfb128;
150 case NID_aes_256_cfb128:
151 case NID_aes_256_cfb8:
152 case NID_aes_256_cfb1:
154 return NID_aes_256_cfb128;
160 return NID_des_cfb64;
162 case NID_des_ede3_cfb64:
163 case NID_des_ede3_cfb8:
164 case NID_des_ede3_cfb1:
166 return NID_des_cfb64;
169 /* Check it has an OID and it is valid */
170 otmp = OBJ_nid2obj(nid);
171 if (OBJ_get0_data(otmp) == NULL)
173 ASN1_OBJECT_free(otmp);
178 int EVP_CIPHER_block_size(const EVP_CIPHER *e)
180 return e->block_size;
183 int EVP_CIPHER_CTX_block_size(const EVP_CIPHER_CTX *ctx)
185 return ctx->cipher->block_size;
188 int EVP_CIPHER_impl_ctx_size(const EVP_CIPHER *e)
193 int EVP_Cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
194 const unsigned char *in, unsigned int inl)
196 return ctx->cipher->do_cipher(ctx, out, in, inl);
199 const EVP_CIPHER *EVP_CIPHER_CTX_cipher(const EVP_CIPHER_CTX *ctx)
204 int EVP_CIPHER_CTX_encrypting(const EVP_CIPHER_CTX *ctx)
209 unsigned long EVP_CIPHER_flags(const EVP_CIPHER *cipher)
211 return cipher->flags;
214 void *EVP_CIPHER_CTX_get_app_data(const EVP_CIPHER_CTX *ctx)
216 return ctx->app_data;
219 void EVP_CIPHER_CTX_set_app_data(EVP_CIPHER_CTX *ctx, void *data)
221 ctx->app_data = data;
224 void *EVP_CIPHER_CTX_get_cipher_data(const EVP_CIPHER_CTX *ctx)
226 return ctx->cipher_data;
229 void *EVP_CIPHER_CTX_set_cipher_data(EVP_CIPHER_CTX *ctx, void *cipher_data)
231 void *old_cipher_data;
233 old_cipher_data = ctx->cipher_data;
234 ctx->cipher_data = cipher_data;
236 return old_cipher_data;
239 int EVP_CIPHER_iv_length(const EVP_CIPHER *cipher)
241 return cipher->iv_len;
244 int EVP_CIPHER_CTX_iv_length(const EVP_CIPHER_CTX *ctx)
246 return ctx->cipher->iv_len;
249 const unsigned char *EVP_CIPHER_CTX_original_iv(const EVP_CIPHER_CTX *ctx)
254 const unsigned char *EVP_CIPHER_CTX_iv(const EVP_CIPHER_CTX *ctx)
259 unsigned char *EVP_CIPHER_CTX_iv_noconst(EVP_CIPHER_CTX *ctx)
264 unsigned char *EVP_CIPHER_CTX_buf_noconst(EVP_CIPHER_CTX *ctx)
269 int EVP_CIPHER_CTX_num(const EVP_CIPHER_CTX *ctx)
274 void EVP_CIPHER_CTX_set_num(EVP_CIPHER_CTX *ctx, int num)
279 int EVP_CIPHER_key_length(const EVP_CIPHER *cipher)
281 if (cipher->prov != NULL) {
282 if (cipher->key_length != NULL)
283 return (int)cipher->key_length();
287 return cipher->key_len;
290 int EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX *ctx)
293 * TODO(3.0): This may need to change if/when we introduce variable length
294 * key ciphers into the providers.
296 if (ctx->cipher != NULL && ctx->cipher->prov != NULL)
297 return EVP_CIPHER_key_length(ctx->cipher);
301 int EVP_CIPHER_nid(const EVP_CIPHER *cipher)
306 int EVP_CIPHER_CTX_nid(const EVP_CIPHER_CTX *ctx)
308 return ctx->cipher->nid;
311 int EVP_MD_block_size(const EVP_MD *md)
314 EVPerr(EVP_F_EVP_MD_BLOCK_SIZE, EVP_R_MESSAGE_DIGEST_IS_NULL);
318 if (md->prov != NULL && md->dblock_size != NULL)
319 return (int)md->dblock_size();
321 return md->block_size;
324 int EVP_MD_type(const EVP_MD *md)
329 int EVP_MD_pkey_type(const EVP_MD *md)
331 return md->pkey_type;
334 int EVP_MD_size(const EVP_MD *md)
337 EVPerr(EVP_F_EVP_MD_SIZE, EVP_R_MESSAGE_DIGEST_IS_NULL);
341 if (md->prov != NULL && md->size != NULL)
342 return (int)md->size();
347 unsigned long EVP_MD_flags(const EVP_MD *md)
352 EVP_MD *EVP_MD_meth_new(int md_type, int pkey_type)
354 EVP_MD *md = OPENSSL_zalloc(sizeof(*md));
358 md->pkey_type = pkey_type;
359 md->lock = CRYPTO_THREAD_lock_new();
360 if (md->lock == NULL) {
369 EVP_MD *EVP_MD_meth_dup(const EVP_MD *md)
371 EVP_MD *to = EVP_MD_meth_new(md->type, md->pkey_type);
374 CRYPTO_RWLOCK *lock = to->lock;
375 memcpy(to, md, sizeof(*to));
381 int EVP_MD_upref(EVP_MD *md)
385 CRYPTO_UP_REF(&md->refcnt, &ref, md->lock);
389 void EVP_MD_meth_free(EVP_MD *md)
394 CRYPTO_DOWN_REF(&md->refcnt, &i, md->lock);
397 ossl_provider_free(md->prov);
398 CRYPTO_THREAD_lock_free(md->lock);
402 int EVP_MD_meth_set_input_blocksize(EVP_MD *md, int blocksize)
404 md->block_size = blocksize;
407 int EVP_MD_meth_set_result_size(EVP_MD *md, int resultsize)
409 md->md_size = resultsize;
412 int EVP_MD_meth_set_app_datasize(EVP_MD *md, int datasize)
414 md->ctx_size = datasize;
417 int EVP_MD_meth_set_flags(EVP_MD *md, unsigned long flags)
422 int EVP_MD_meth_set_init(EVP_MD *md, int (*init)(EVP_MD_CTX *ctx))
427 int EVP_MD_meth_set_update(EVP_MD *md, int (*update)(EVP_MD_CTX *ctx,
434 int EVP_MD_meth_set_final(EVP_MD *md, int (*final)(EVP_MD_CTX *ctx,
440 int EVP_MD_meth_set_copy(EVP_MD *md, int (*copy)(EVP_MD_CTX *to,
441 const EVP_MD_CTX *from))
446 int EVP_MD_meth_set_cleanup(EVP_MD *md, int (*cleanup)(EVP_MD_CTX *ctx))
448 md->cleanup = cleanup;
451 int EVP_MD_meth_set_ctrl(EVP_MD *md, int (*ctrl)(EVP_MD_CTX *ctx, int cmd,
458 int EVP_MD_meth_get_input_blocksize(const EVP_MD *md)
460 return md->block_size;
462 int EVP_MD_meth_get_result_size(const EVP_MD *md)
466 int EVP_MD_meth_get_app_datasize(const EVP_MD *md)
470 unsigned long EVP_MD_meth_get_flags(const EVP_MD *md)
474 int (*EVP_MD_meth_get_init(const EVP_MD *md))(EVP_MD_CTX *ctx)
478 int (*EVP_MD_meth_get_update(const EVP_MD *md))(EVP_MD_CTX *ctx,
484 int (*EVP_MD_meth_get_final(const EVP_MD *md))(EVP_MD_CTX *ctx,
489 int (*EVP_MD_meth_get_copy(const EVP_MD *md))(EVP_MD_CTX *to,
490 const EVP_MD_CTX *from)
494 int (*EVP_MD_meth_get_cleanup(const EVP_MD *md))(EVP_MD_CTX *ctx)
498 int (*EVP_MD_meth_get_ctrl(const EVP_MD *md))(EVP_MD_CTX *ctx, int cmd,
504 const EVP_MD *EVP_MD_CTX_md(const EVP_MD_CTX *ctx)
508 return ctx->reqdigest;
511 EVP_PKEY_CTX *EVP_MD_CTX_pkey_ctx(const EVP_MD_CTX *ctx)
516 void EVP_MD_CTX_set_pkey_ctx(EVP_MD_CTX *ctx, EVP_PKEY_CTX *pctx)
519 * it's reasonable to set NULL pctx (a.k.a clear the ctx->pctx), so
520 * we have to deal with the cleanup job here.
522 if (!EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX))
523 EVP_PKEY_CTX_free(ctx->pctx);
528 /* make sure pctx is not freed when destroying EVP_MD_CTX */
529 EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX);
531 EVP_MD_CTX_clear_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX);
535 void *EVP_MD_CTX_md_data(const EVP_MD_CTX *ctx)
540 int (*EVP_MD_CTX_update_fn(EVP_MD_CTX *ctx))(EVP_MD_CTX *ctx,
541 const void *data, size_t count)
546 void EVP_MD_CTX_set_update_fn(EVP_MD_CTX *ctx,
547 int (*update) (EVP_MD_CTX *ctx,
548 const void *data, size_t count))
550 ctx->update = update;
553 void EVP_MD_CTX_set_flags(EVP_MD_CTX *ctx, int flags)
558 void EVP_MD_CTX_clear_flags(EVP_MD_CTX *ctx, int flags)
560 ctx->flags &= ~flags;
563 int EVP_MD_CTX_test_flags(const EVP_MD_CTX *ctx, int flags)
565 return (ctx->flags & flags);
568 void EVP_CIPHER_CTX_set_flags(EVP_CIPHER_CTX *ctx, int flags)
573 void EVP_CIPHER_CTX_clear_flags(EVP_CIPHER_CTX *ctx, int flags)
575 ctx->flags &= ~flags;
578 int EVP_CIPHER_CTX_test_flags(const EVP_CIPHER_CTX *ctx, int flags)
580 return (ctx->flags & flags);
583 int EVP_str2ctrl(int (*cb)(void *ctx, int cmd, void *buf, size_t buflen),
584 void *ctx, int cmd, const char *value)
591 return cb(ctx, cmd, (void *)value, len);
594 int EVP_hex2ctrl(int (*cb)(void *ctx, int cmd, void *buf, size_t buflen),
595 void *ctx, int cmd, const char *hex)
601 bin = OPENSSL_hexstr2buf(hex, &binlen);
604 if (binlen <= INT_MAX)
605 rv = cb(ctx, cmd, bin, binlen);