You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
336 lines
8.5 KiB
336 lines
8.5 KiB
/* crypto/evp/evp_lib.c */ |
|
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
|
* All rights reserved. |
|
* |
|
* This package is an SSL implementation written |
|
* by Eric Young (eay@cryptsoft.com). |
|
* The implementation was written so as to conform with Netscapes SSL. |
|
* |
|
* This library is free for commercial and non-commercial use as long as |
|
* the following conditions are aheared to. The following conditions |
|
* apply to all code found in this distribution, be it the RC4, RSA, |
|
* lhash, DES, etc., code; not just the SSL code. The SSL documentation |
|
* included with this distribution is covered by the same copyright terms |
|
* except that the holder is Tim Hudson (tjh@cryptsoft.com). |
|
* |
|
* Copyright remains Eric Young's, and as such any Copyright notices in |
|
* the code are not to be removed. |
|
* If this package is used in a product, Eric Young should be given attribution |
|
* as the author of the parts of the library used. |
|
* This can be in the form of a textual message at program startup or |
|
* in documentation (online or textual) provided with the package. |
|
* |
|
* Redistribution and use in source and binary forms, with or without |
|
* modification, are permitted provided that the following conditions |
|
* are met: |
|
* 1. Redistributions of source code must retain the copyright |
|
* notice, this list of conditions and the following disclaimer. |
|
* 2. Redistributions in binary form must reproduce the above copyright |
|
* notice, this list of conditions and the following disclaimer in the |
|
* documentation and/or other materials provided with the distribution. |
|
* 3. All advertising materials mentioning features or use of this software |
|
* must display the following acknowledgement: |
|
* "This product includes cryptographic software written by |
|
* Eric Young (eay@cryptsoft.com)" |
|
* The word 'cryptographic' can be left out if the rouines from the library |
|
* being used are not cryptographic related :-). |
|
* 4. If you include any Windows specific code (or a derivative thereof) from |
|
* the apps directory (application code) you must include an acknowledgement: |
|
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
|
* |
|
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
|
* SUCH DAMAGE. |
|
* |
|
* The licence and distribution terms for any publically available version or |
|
* derivative of this code cannot be changed. i.e. this code cannot simply be |
|
* copied and put under another distribution licence |
|
* [including the GNU Public Licence.] |
|
*/ |
|
|
|
#include <stdio.h> |
|
#include "cryptlib.h" |
|
#include <openssl/evp.h> |
|
#include <openssl/objects.h> |
|
|
|
int EVP_CIPHER_param_to_asn1(EVP_CIPHER_CTX *c, ASN1_TYPE *type) |
|
{ |
|
int ret; |
|
|
|
if (c->cipher->set_asn1_parameters != NULL) |
|
ret = c->cipher->set_asn1_parameters(c, type); |
|
else if (c->cipher->flags & EVP_CIPH_FLAG_DEFAULT_ASN1) { |
|
switch (EVP_CIPHER_CTX_mode(c)) { |
|
|
|
case EVP_CIPH_GCM_MODE: |
|
case EVP_CIPH_CCM_MODE: |
|
case EVP_CIPH_XTS_MODE: |
|
ret = -1; |
|
break; |
|
|
|
default: |
|
ret = EVP_CIPHER_set_asn1_iv(c, type); |
|
} |
|
} else |
|
ret = -1; |
|
return (ret); |
|
} |
|
|
|
int EVP_CIPHER_asn1_to_param(EVP_CIPHER_CTX *c, ASN1_TYPE *type) |
|
{ |
|
int ret; |
|
|
|
if (c->cipher->get_asn1_parameters != NULL) |
|
ret = c->cipher->get_asn1_parameters(c, type); |
|
else if (c->cipher->flags & EVP_CIPH_FLAG_DEFAULT_ASN1) { |
|
switch (EVP_CIPHER_CTX_mode(c)) { |
|
|
|
case EVP_CIPH_GCM_MODE: |
|
case EVP_CIPH_CCM_MODE: |
|
case EVP_CIPH_XTS_MODE: |
|
ret = -1; |
|
break; |
|
|
|
default: |
|
ret = EVP_CIPHER_get_asn1_iv(c, type); |
|
break; |
|
} |
|
} else |
|
ret = -1; |
|
return (ret); |
|
} |
|
|
|
int EVP_CIPHER_get_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type) |
|
{ |
|
int i = 0; |
|
unsigned int l; |
|
|
|
if (type != NULL) { |
|
l = EVP_CIPHER_CTX_iv_length(c); |
|
OPENSSL_assert(l <= sizeof(c->iv)); |
|
i = ASN1_TYPE_get_octetstring(type, c->oiv, l); |
|
if (i != (int)l) |
|
return (-1); |
|
else if (i > 0) |
|
memcpy(c->iv, c->oiv, l); |
|
} |
|
return (i); |
|
} |
|
|
|
int EVP_CIPHER_set_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type) |
|
{ |
|
int i = 0; |
|
unsigned int j; |
|
|
|
if (type != NULL) { |
|
j = EVP_CIPHER_CTX_iv_length(c); |
|
OPENSSL_assert(j <= sizeof(c->iv)); |
|
i = ASN1_TYPE_set_octetstring(type, c->oiv, j); |
|
} |
|
return (i); |
|
} |
|
|
|
/* Convert the various cipher NIDs and dummies to a proper OID NID */ |
|
int EVP_CIPHER_type(const EVP_CIPHER *ctx) |
|
{ |
|
int nid; |
|
ASN1_OBJECT *otmp; |
|
nid = EVP_CIPHER_nid(ctx); |
|
|
|
switch (nid) { |
|
|
|
case NID_rc2_cbc: |
|
case NID_rc2_64_cbc: |
|
case NID_rc2_40_cbc: |
|
|
|
return NID_rc2_cbc; |
|
|
|
case NID_rc4: |
|
case NID_rc4_40: |
|
|
|
return NID_rc4; |
|
|
|
case NID_aes_128_cfb128: |
|
case NID_aes_128_cfb8: |
|
case NID_aes_128_cfb1: |
|
|
|
return NID_aes_128_cfb128; |
|
|
|
case NID_aes_192_cfb128: |
|
case NID_aes_192_cfb8: |
|
case NID_aes_192_cfb1: |
|
|
|
return NID_aes_192_cfb128; |
|
|
|
case NID_aes_256_cfb128: |
|
case NID_aes_256_cfb8: |
|
case NID_aes_256_cfb1: |
|
|
|
return NID_aes_256_cfb128; |
|
|
|
case NID_des_cfb64: |
|
case NID_des_cfb8: |
|
case NID_des_cfb1: |
|
|
|
return NID_des_cfb64; |
|
|
|
case NID_des_ede3_cfb64: |
|
case NID_des_ede3_cfb8: |
|
case NID_des_ede3_cfb1: |
|
|
|
return NID_des_cfb64; |
|
|
|
default: |
|
/* Check it has an OID and it is valid */ |
|
otmp = OBJ_nid2obj(nid); |
|
if (!otmp || !otmp->data) |
|
nid = NID_undef; |
|
ASN1_OBJECT_free(otmp); |
|
return nid; |
|
} |
|
} |
|
|
|
int EVP_CIPHER_block_size(const EVP_CIPHER *e) |
|
{ |
|
return e->block_size; |
|
} |
|
|
|
int EVP_CIPHER_CTX_block_size(const EVP_CIPHER_CTX *ctx) |
|
{ |
|
return ctx->cipher->block_size; |
|
} |
|
|
|
int EVP_Cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
|
const unsigned char *in, unsigned int inl) |
|
{ |
|
return ctx->cipher->do_cipher(ctx, out, in, inl); |
|
} |
|
|
|
const EVP_CIPHER *EVP_CIPHER_CTX_cipher(const EVP_CIPHER_CTX *ctx) |
|
{ |
|
return ctx->cipher; |
|
} |
|
|
|
unsigned long EVP_CIPHER_flags(const EVP_CIPHER *cipher) |
|
{ |
|
return cipher->flags; |
|
} |
|
|
|
unsigned long EVP_CIPHER_CTX_flags(const EVP_CIPHER_CTX *ctx) |
|
{ |
|
return ctx->cipher->flags; |
|
} |
|
|
|
void *EVP_CIPHER_CTX_get_app_data(const EVP_CIPHER_CTX *ctx) |
|
{ |
|
return ctx->app_data; |
|
} |
|
|
|
void EVP_CIPHER_CTX_set_app_data(EVP_CIPHER_CTX *ctx, void *data) |
|
{ |
|
ctx->app_data = data; |
|
} |
|
|
|
int EVP_CIPHER_iv_length(const EVP_CIPHER *cipher) |
|
{ |
|
return cipher->iv_len; |
|
} |
|
|
|
int EVP_CIPHER_CTX_iv_length(const EVP_CIPHER_CTX *ctx) |
|
{ |
|
return ctx->cipher->iv_len; |
|
} |
|
|
|
int EVP_CIPHER_key_length(const EVP_CIPHER *cipher) |
|
{ |
|
return cipher->key_len; |
|
} |
|
|
|
int EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX *ctx) |
|
{ |
|
return ctx->key_len; |
|
} |
|
|
|
int EVP_CIPHER_nid(const EVP_CIPHER *cipher) |
|
{ |
|
return cipher->nid; |
|
} |
|
|
|
int EVP_CIPHER_CTX_nid(const EVP_CIPHER_CTX *ctx) |
|
{ |
|
return ctx->cipher->nid; |
|
} |
|
|
|
int EVP_MD_block_size(const EVP_MD *md) |
|
{ |
|
return md->block_size; |
|
} |
|
|
|
int EVP_MD_type(const EVP_MD *md) |
|
{ |
|
return md->type; |
|
} |
|
|
|
int EVP_MD_pkey_type(const EVP_MD *md) |
|
{ |
|
return md->pkey_type; |
|
} |
|
|
|
int EVP_MD_size(const EVP_MD *md) |
|
{ |
|
if (!md) { |
|
EVPerr(EVP_F_EVP_MD_SIZE, EVP_R_MESSAGE_DIGEST_IS_NULL); |
|
return -1; |
|
} |
|
return md->md_size; |
|
} |
|
|
|
unsigned long EVP_MD_flags(const EVP_MD *md) |
|
{ |
|
return md->flags; |
|
} |
|
|
|
const EVP_MD *EVP_MD_CTX_md(const EVP_MD_CTX *ctx) |
|
{ |
|
if (!ctx) |
|
return NULL; |
|
return ctx->digest; |
|
} |
|
|
|
void EVP_MD_CTX_set_flags(EVP_MD_CTX *ctx, int flags) |
|
{ |
|
ctx->flags |= flags; |
|
} |
|
|
|
void EVP_MD_CTX_clear_flags(EVP_MD_CTX *ctx, int flags) |
|
{ |
|
ctx->flags &= ~flags; |
|
} |
|
|
|
int EVP_MD_CTX_test_flags(const EVP_MD_CTX *ctx, int flags) |
|
{ |
|
return (ctx->flags & flags); |
|
} |
|
|
|
void EVP_CIPHER_CTX_set_flags(EVP_CIPHER_CTX *ctx, int flags) |
|
{ |
|
ctx->flags |= flags; |
|
} |
|
|
|
void EVP_CIPHER_CTX_clear_flags(EVP_CIPHER_CTX *ctx, int flags) |
|
{ |
|
ctx->flags &= ~flags; |
|
} |
|
|
|
int EVP_CIPHER_CTX_test_flags(const EVP_CIPHER_CTX *ctx, int flags) |
|
{ |
|
return (ctx->flags & flags); |
|
}
|
|
|