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 return cipher->key_len;
284 int EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX *ctx)
289 int EVP_CIPHER_nid(const EVP_CIPHER *cipher)
294 int EVP_CIPHER_CTX_nid(const EVP_CIPHER_CTX *ctx)
296 return ctx->cipher->nid;
299 int EVP_MD_block_size(const EVP_MD *md)
302 EVPerr(EVP_F_EVP_MD_BLOCK_SIZE, EVP_R_MESSAGE_DIGEST_IS_NULL);
306 if (md->prov != NULL && md->dblock_size != NULL)
307 return (int)md->dblock_size();
309 return md->block_size;
312 int EVP_MD_type(const EVP_MD *md)
317 int EVP_MD_pkey_type(const EVP_MD *md)
319 return md->pkey_type;
322 int EVP_MD_size(const EVP_MD *md)
325 EVPerr(EVP_F_EVP_MD_SIZE, EVP_R_MESSAGE_DIGEST_IS_NULL);
329 if (md->prov != NULL && md->size != NULL)
330 return (int)md->size();
335 unsigned long EVP_MD_flags(const EVP_MD *md)
340 EVP_MD *EVP_MD_meth_new(int md_type, int pkey_type)
342 EVP_MD *md = OPENSSL_zalloc(sizeof(*md));
346 md->pkey_type = pkey_type;
347 md->lock = CRYPTO_THREAD_lock_new();
348 if (md->lock == NULL) {
356 EVP_MD *EVP_MD_meth_dup(const EVP_MD *md)
358 EVP_MD *to = EVP_MD_meth_new(md->type, md->pkey_type);
361 memcpy(to, md, sizeof(*to));
365 int EVP_MD_upref(EVP_MD *md)
369 CRYPTO_UP_REF(&md->refcnt, &ref, md->lock);
373 void EVP_MD_meth_free(EVP_MD *md)
378 CRYPTO_DOWN_REF(&md->refcnt, &i, md->lock);
381 ossl_provider_free(md->prov);
382 CRYPTO_THREAD_lock_free(md->lock);
386 int EVP_MD_meth_set_input_blocksize(EVP_MD *md, int blocksize)
388 md->block_size = blocksize;
391 int EVP_MD_meth_set_result_size(EVP_MD *md, int resultsize)
393 md->md_size = resultsize;
396 int EVP_MD_meth_set_app_datasize(EVP_MD *md, int datasize)
398 md->ctx_size = datasize;
401 int EVP_MD_meth_set_flags(EVP_MD *md, unsigned long flags)
406 int EVP_MD_meth_set_init(EVP_MD *md, int (*init)(EVP_MD_CTX *ctx))
411 int EVP_MD_meth_set_update(EVP_MD *md, int (*update)(EVP_MD_CTX *ctx,
418 int EVP_MD_meth_set_final(EVP_MD *md, int (*final)(EVP_MD_CTX *ctx,
424 int EVP_MD_meth_set_copy(EVP_MD *md, int (*copy)(EVP_MD_CTX *to,
425 const EVP_MD_CTX *from))
430 int EVP_MD_meth_set_cleanup(EVP_MD *md, int (*cleanup)(EVP_MD_CTX *ctx))
432 md->cleanup = cleanup;
435 int EVP_MD_meth_set_ctrl(EVP_MD *md, int (*ctrl)(EVP_MD_CTX *ctx, int cmd,
442 int EVP_MD_meth_get_input_blocksize(const EVP_MD *md)
444 return md->block_size;
446 int EVP_MD_meth_get_result_size(const EVP_MD *md)
450 int EVP_MD_meth_get_app_datasize(const EVP_MD *md)
454 unsigned long EVP_MD_meth_get_flags(const EVP_MD *md)
458 int (*EVP_MD_meth_get_init(const EVP_MD *md))(EVP_MD_CTX *ctx)
462 int (*EVP_MD_meth_get_update(const EVP_MD *md))(EVP_MD_CTX *ctx,
468 int (*EVP_MD_meth_get_final(const EVP_MD *md))(EVP_MD_CTX *ctx,
473 int (*EVP_MD_meth_get_copy(const EVP_MD *md))(EVP_MD_CTX *to,
474 const EVP_MD_CTX *from)
478 int (*EVP_MD_meth_get_cleanup(const EVP_MD *md))(EVP_MD_CTX *ctx)
482 int (*EVP_MD_meth_get_ctrl(const EVP_MD *md))(EVP_MD_CTX *ctx, int cmd,
488 const EVP_MD *EVP_MD_CTX_md(const EVP_MD_CTX *ctx)
492 return ctx->reqdigest;
495 EVP_PKEY_CTX *EVP_MD_CTX_pkey_ctx(const EVP_MD_CTX *ctx)
500 void EVP_MD_CTX_set_pkey_ctx(EVP_MD_CTX *ctx, EVP_PKEY_CTX *pctx)
503 * it's reasonable to set NULL pctx (a.k.a clear the ctx->pctx), so
504 * we have to deal with the cleanup job here.
506 if (!EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX))
507 EVP_PKEY_CTX_free(ctx->pctx);
512 /* make sure pctx is not freed when destroying EVP_MD_CTX */
513 EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX);
515 EVP_MD_CTX_clear_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX);
519 void *EVP_MD_CTX_md_data(const EVP_MD_CTX *ctx)
524 int (*EVP_MD_CTX_update_fn(EVP_MD_CTX *ctx))(EVP_MD_CTX *ctx,
525 const void *data, size_t count)
530 void EVP_MD_CTX_set_update_fn(EVP_MD_CTX *ctx,
531 int (*update) (EVP_MD_CTX *ctx,
532 const void *data, size_t count))
534 ctx->update = update;
537 void EVP_MD_CTX_set_flags(EVP_MD_CTX *ctx, int flags)
542 void EVP_MD_CTX_clear_flags(EVP_MD_CTX *ctx, int flags)
544 ctx->flags &= ~flags;
547 int EVP_MD_CTX_test_flags(const EVP_MD_CTX *ctx, int flags)
549 return (ctx->flags & flags);
552 void EVP_CIPHER_CTX_set_flags(EVP_CIPHER_CTX *ctx, int flags)
557 void EVP_CIPHER_CTX_clear_flags(EVP_CIPHER_CTX *ctx, int flags)
559 ctx->flags &= ~flags;
562 int EVP_CIPHER_CTX_test_flags(const EVP_CIPHER_CTX *ctx, int flags)
564 return (ctx->flags & flags);
567 int EVP_str2ctrl(int (*cb)(void *ctx, int cmd, void *buf, size_t buflen),
568 void *ctx, int cmd, const char *value)
575 return cb(ctx, cmd, (void *)value, len);
578 int EVP_hex2ctrl(int (*cb)(void *ctx, int cmd, void *buf, size_t buflen),
579 void *ctx, int cmd, const char *hex)
585 bin = OPENSSL_hexstr2buf(hex, &binlen);
588 if (binlen <= INT_MAX)
589 rv = cb(ctx, cmd, bin, binlen);