2 * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (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"
17 int EVP_CIPHER_param_to_asn1(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
21 if (c->cipher->set_asn1_parameters != NULL)
22 ret = c->cipher->set_asn1_parameters(c, type);
23 else if (c->cipher->flags & EVP_CIPH_FLAG_DEFAULT_ASN1) {
24 switch (EVP_CIPHER_CTX_mode(c)) {
25 case EVP_CIPH_WRAP_MODE:
26 if (EVP_CIPHER_CTX_nid(c) == NID_id_smime_alg_CMS3DESwrap)
27 ASN1_TYPE_set(type, V_ASN1_NULL, NULL);
31 case EVP_CIPH_GCM_MODE:
32 case EVP_CIPH_CCM_MODE:
33 case EVP_CIPH_XTS_MODE:
34 case EVP_CIPH_OCB_MODE:
39 ret = EVP_CIPHER_set_asn1_iv(c, type);
44 EVPerr(EVP_F_EVP_CIPHER_PARAM_TO_ASN1, ret == -2 ?
45 ASN1_R_UNSUPPORTED_CIPHER :
46 EVP_R_CIPHER_PARAMETER_ERROR);
52 int EVP_CIPHER_asn1_to_param(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
56 if (c->cipher->get_asn1_parameters != NULL)
57 ret = c->cipher->get_asn1_parameters(c, type);
58 else if (c->cipher->flags & EVP_CIPH_FLAG_DEFAULT_ASN1) {
59 switch (EVP_CIPHER_CTX_mode(c)) {
61 case EVP_CIPH_WRAP_MODE:
65 case EVP_CIPH_GCM_MODE:
66 case EVP_CIPH_CCM_MODE:
67 case EVP_CIPH_XTS_MODE:
68 case EVP_CIPH_OCB_MODE:
73 ret = EVP_CIPHER_get_asn1_iv(c, type);
79 EVPerr(EVP_F_EVP_CIPHER_ASN1_TO_PARAM, ret == -2 ?
80 EVP_R_UNSUPPORTED_CIPHER :
81 EVP_R_CIPHER_PARAMETER_ERROR);
87 int EVP_CIPHER_get_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
93 l = EVP_CIPHER_CTX_iv_length(c);
94 OPENSSL_assert(l <= sizeof(c->iv));
95 i = ASN1_TYPE_get_octetstring(type, c->oiv, l);
99 memcpy(c->iv, c->oiv, l);
104 int EVP_CIPHER_set_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
110 j = EVP_CIPHER_CTX_iv_length(c);
111 OPENSSL_assert(j <= sizeof(c->iv));
112 i = ASN1_TYPE_set_octetstring(type, c->oiv, j);
117 /* Convert the various cipher NIDs and dummies to a proper OID NID */
118 int EVP_CIPHER_type(const EVP_CIPHER *ctx)
122 nid = EVP_CIPHER_nid(ctx);
137 case NID_aes_128_cfb128:
138 case NID_aes_128_cfb8:
139 case NID_aes_128_cfb1:
141 return NID_aes_128_cfb128;
143 case NID_aes_192_cfb128:
144 case NID_aes_192_cfb8:
145 case NID_aes_192_cfb1:
147 return NID_aes_192_cfb128;
149 case NID_aes_256_cfb128:
150 case NID_aes_256_cfb8:
151 case NID_aes_256_cfb1:
153 return NID_aes_256_cfb128;
159 return NID_des_cfb64;
161 case NID_des_ede3_cfb64:
162 case NID_des_ede3_cfb8:
163 case NID_des_ede3_cfb1:
165 return NID_des_cfb64;
168 /* Check it has an OID and it is valid */
169 otmp = OBJ_nid2obj(nid);
170 if (OBJ_get0_data(otmp) == NULL)
172 ASN1_OBJECT_free(otmp);
177 int EVP_CIPHER_block_size(const EVP_CIPHER *e)
179 return e->block_size;
182 int EVP_CIPHER_CTX_block_size(const EVP_CIPHER_CTX *ctx)
184 return ctx->cipher->block_size;
187 int EVP_CIPHER_impl_ctx_size(const EVP_CIPHER *e)
192 int EVP_Cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
193 const unsigned char *in, unsigned int inl)
195 return ctx->cipher->do_cipher(ctx, out, in, inl);
198 const EVP_CIPHER *EVP_CIPHER_CTX_cipher(const EVP_CIPHER_CTX *ctx)
203 int EVP_CIPHER_CTX_encrypting(const EVP_CIPHER_CTX *ctx)
208 unsigned long EVP_CIPHER_flags(const EVP_CIPHER *cipher)
210 return cipher->flags;
213 void *EVP_CIPHER_CTX_get_app_data(const EVP_CIPHER_CTX *ctx)
215 return ctx->app_data;
218 void EVP_CIPHER_CTX_set_app_data(EVP_CIPHER_CTX *ctx, void *data)
220 ctx->app_data = data;
223 void *EVP_CIPHER_CTX_get_cipher_data(const EVP_CIPHER_CTX *ctx)
225 return ctx->cipher_data;
228 void *EVP_CIPHER_CTX_set_cipher_data(EVP_CIPHER_CTX *ctx, void *cipher_data)
230 void *old_cipher_data;
232 old_cipher_data = ctx->cipher_data;
233 ctx->cipher_data = cipher_data;
235 return old_cipher_data;
238 int EVP_CIPHER_iv_length(const EVP_CIPHER *cipher)
240 return cipher->iv_len;
243 int EVP_CIPHER_CTX_iv_length(const EVP_CIPHER_CTX *ctx)
247 if ((EVP_CIPHER_flags(ctx->cipher) & EVP_CIPH_CUSTOM_IV_LENGTH) != 0) {
248 rv = EVP_CIPHER_CTX_ctrl((EVP_CIPHER_CTX *)ctx, EVP_CTRL_GET_IVLEN,
250 return (rv == 1) ? i : -1;
252 return ctx->cipher->iv_len;
255 const unsigned char *EVP_CIPHER_CTX_original_iv(const EVP_CIPHER_CTX *ctx)
260 const unsigned char *EVP_CIPHER_CTX_iv(const EVP_CIPHER_CTX *ctx)
265 unsigned char *EVP_CIPHER_CTX_iv_noconst(EVP_CIPHER_CTX *ctx)
270 unsigned char *EVP_CIPHER_CTX_buf_noconst(EVP_CIPHER_CTX *ctx)
275 int EVP_CIPHER_CTX_num(const EVP_CIPHER_CTX *ctx)
280 void EVP_CIPHER_CTX_set_num(EVP_CIPHER_CTX *ctx, int num)
285 int EVP_CIPHER_key_length(const EVP_CIPHER *cipher)
287 return cipher->key_len;
290 int EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX *ctx)
295 int EVP_CIPHER_nid(const EVP_CIPHER *cipher)
300 int EVP_CIPHER_CTX_nid(const EVP_CIPHER_CTX *ctx)
302 return ctx->cipher->nid;
305 int EVP_MD_block_size(const EVP_MD *md)
307 return md->block_size;
310 int EVP_MD_type(const EVP_MD *md)
315 int EVP_MD_pkey_type(const EVP_MD *md)
317 return md->pkey_type;
320 int EVP_MD_size(const EVP_MD *md)
323 EVPerr(EVP_F_EVP_MD_SIZE, EVP_R_MESSAGE_DIGEST_IS_NULL);
329 unsigned long EVP_MD_flags(const EVP_MD *md)
334 EVP_MD *EVP_MD_meth_new(int md_type, int pkey_type)
336 EVP_MD *md = OPENSSL_zalloc(sizeof(*md));
340 md->pkey_type = pkey_type;
344 EVP_MD *EVP_MD_meth_dup(const EVP_MD *md)
346 EVP_MD *to = EVP_MD_meth_new(md->type, md->pkey_type);
349 memcpy(to, md, sizeof(*to));
352 void EVP_MD_meth_free(EVP_MD *md)
356 int EVP_MD_meth_set_input_blocksize(EVP_MD *md, int blocksize)
358 md->block_size = blocksize;
361 int EVP_MD_meth_set_result_size(EVP_MD *md, int resultsize)
363 md->md_size = resultsize;
366 int EVP_MD_meth_set_app_datasize(EVP_MD *md, int datasize)
368 md->ctx_size = datasize;
371 int EVP_MD_meth_set_flags(EVP_MD *md, unsigned long flags)
376 int EVP_MD_meth_set_init(EVP_MD *md, int (*init)(EVP_MD_CTX *ctx))
381 int EVP_MD_meth_set_update(EVP_MD *md, int (*update)(EVP_MD_CTX *ctx,
388 int EVP_MD_meth_set_final(EVP_MD *md, int (*final)(EVP_MD_CTX *ctx,
394 int EVP_MD_meth_set_copy(EVP_MD *md, int (*copy)(EVP_MD_CTX *to,
395 const EVP_MD_CTX *from))
400 int EVP_MD_meth_set_cleanup(EVP_MD *md, int (*cleanup)(EVP_MD_CTX *ctx))
402 md->cleanup = cleanup;
405 int EVP_MD_meth_set_ctrl(EVP_MD *md, int (*ctrl)(EVP_MD_CTX *ctx, int cmd,
412 int EVP_MD_meth_get_input_blocksize(const EVP_MD *md)
414 return md->block_size;
416 int EVP_MD_meth_get_result_size(const EVP_MD *md)
420 int EVP_MD_meth_get_app_datasize(const EVP_MD *md)
424 unsigned long EVP_MD_meth_get_flags(const EVP_MD *md)
428 int (*EVP_MD_meth_get_init(const EVP_MD *md))(EVP_MD_CTX *ctx)
432 int (*EVP_MD_meth_get_update(const EVP_MD *md))(EVP_MD_CTX *ctx,
438 int (*EVP_MD_meth_get_final(const EVP_MD *md))(EVP_MD_CTX *ctx,
443 int (*EVP_MD_meth_get_copy(const EVP_MD *md))(EVP_MD_CTX *to,
444 const EVP_MD_CTX *from)
448 int (*EVP_MD_meth_get_cleanup(const EVP_MD *md))(EVP_MD_CTX *ctx)
452 int (*EVP_MD_meth_get_ctrl(const EVP_MD *md))(EVP_MD_CTX *ctx, int cmd,
458 const EVP_MD *EVP_MD_CTX_md(const EVP_MD_CTX *ctx)
465 EVP_PKEY_CTX *EVP_MD_CTX_pkey_ctx(const EVP_MD_CTX *ctx)
470 void EVP_MD_CTX_set_pkey_ctx(EVP_MD_CTX *ctx, EVP_PKEY_CTX *pctx)
473 * it's reasonable to set NULL pctx (a.k.a clear the ctx->pctx), so
474 * we have to deal with the cleanup job here.
476 if (!EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX))
477 EVP_PKEY_CTX_free(ctx->pctx);
482 /* make sure pctx is not freed when destroying EVP_MD_CTX */
483 EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX);
485 EVP_MD_CTX_clear_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX);
489 void *EVP_MD_CTX_md_data(const EVP_MD_CTX *ctx)
494 int (*EVP_MD_CTX_update_fn(EVP_MD_CTX *ctx))(EVP_MD_CTX *ctx,
495 const void *data, size_t count)
500 void EVP_MD_CTX_set_update_fn(EVP_MD_CTX *ctx,
501 int (*update) (EVP_MD_CTX *ctx,
502 const void *data, size_t count))
504 ctx->update = update;
507 void EVP_MD_CTX_set_flags(EVP_MD_CTX *ctx, int flags)
512 void EVP_MD_CTX_clear_flags(EVP_MD_CTX *ctx, int flags)
514 ctx->flags &= ~flags;
517 int EVP_MD_CTX_test_flags(const EVP_MD_CTX *ctx, int flags)
519 return (ctx->flags & flags);
522 void EVP_CIPHER_CTX_set_flags(EVP_CIPHER_CTX *ctx, int flags)
527 void EVP_CIPHER_CTX_clear_flags(EVP_CIPHER_CTX *ctx, int flags)
529 ctx->flags &= ~flags;
532 int EVP_CIPHER_CTX_test_flags(const EVP_CIPHER_CTX *ctx, int flags)
534 return (ctx->flags & flags);