ref: bfe9da47cfa2f51ebef78c59332b5ba2deba306d
dir: /third_party/boringssl/src/crypto/fipsmodule/cipher/e_des.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 <openssl/cipher.h>
#include <openssl/des.h>
#include <openssl/nid.h>
#include "internal.h"
#include "../delocate.h"
typedef struct {
union {
double align;
DES_key_schedule ks;
} ks;
} EVP_DES_KEY;
static int des_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
const uint8_t *iv, int enc) {
DES_cblock *deskey = (DES_cblock *)key;
EVP_DES_KEY *dat = (EVP_DES_KEY *)ctx->cipher_data;
DES_set_key(deskey, &dat->ks.ks);
return 1;
}
static int des_cbc_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
size_t in_len) {
EVP_DES_KEY *dat = (EVP_DES_KEY *)ctx->cipher_data;
DES_ncbc_encrypt(in, out, in_len, &dat->ks.ks, (DES_cblock *)ctx->iv,
ctx->encrypt);
return 1;
}
DEFINE_METHOD_FUNCTION(EVP_CIPHER, EVP_des_cbc) {
memset(out, 0, sizeof(EVP_CIPHER));
out->nid = NID_des_cbc;
out->block_size = 8;
out->key_len = 8;
out->iv_len = 8;
out->ctx_size = sizeof(EVP_DES_KEY);
out->flags = EVP_CIPH_CBC_MODE;
out->init = des_init_key;
out->cipher = des_cbc_cipher;
}
static int des_ecb_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
size_t in_len) {
if (in_len < ctx->cipher->block_size) {
return 1;
}
in_len -= ctx->cipher->block_size;
EVP_DES_KEY *dat = (EVP_DES_KEY *) ctx->cipher_data;
for (size_t i = 0; i <= in_len; i += ctx->cipher->block_size) {
DES_ecb_encrypt((DES_cblock *) (in + i), (DES_cblock *) (out + i),
&dat->ks.ks, ctx->encrypt);
}
return 1;
}
DEFINE_METHOD_FUNCTION(EVP_CIPHER, EVP_des_ecb) {
memset(out, 0, sizeof(EVP_CIPHER));
out->nid = NID_des_ecb;
out->block_size = 8;
out->key_len = 8;
out->iv_len = 0;
out->ctx_size = sizeof(EVP_DES_KEY);
out->flags = EVP_CIPH_ECB_MODE;
out->init = des_init_key;
out->cipher = des_ecb_cipher;
}
typedef struct {
union {
double align;
DES_key_schedule ks[3];
} ks;
} DES_EDE_KEY;
static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
const uint8_t *iv, int enc) {
DES_cblock *deskey = (DES_cblock *)key;
DES_EDE_KEY *dat = (DES_EDE_KEY*) ctx->cipher_data;
DES_set_key(&deskey[0], &dat->ks.ks[0]);
DES_set_key(&deskey[1], &dat->ks.ks[1]);
DES_set_key(&deskey[2], &dat->ks.ks[2]);
return 1;
}
static int des_ede3_cbc_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out,
const uint8_t *in, size_t in_len) {
DES_EDE_KEY *dat = (DES_EDE_KEY*) ctx->cipher_data;
DES_ede3_cbc_encrypt(in, out, in_len, &dat->ks.ks[0], &dat->ks.ks[1],
&dat->ks.ks[2], (DES_cblock *)ctx->iv, ctx->encrypt);
return 1;
}
DEFINE_METHOD_FUNCTION(EVP_CIPHER, EVP_des_ede3_cbc) {
memset(out, 0, sizeof(EVP_CIPHER));
out->nid = NID_des_ede3_cbc;
out->block_size = 8;
out->key_len = 24;
out->iv_len = 8;
out->ctx_size = sizeof(DES_EDE_KEY);
out->flags = EVP_CIPH_CBC_MODE;
out->init = des_ede3_init_key;
out->cipher = des_ede3_cbc_cipher;
}
static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
const uint8_t *iv, int enc) {
DES_cblock *deskey = (DES_cblock *) key;
DES_EDE_KEY *dat = (DES_EDE_KEY *) ctx->cipher_data;
DES_set_key(&deskey[0], &dat->ks.ks[0]);
DES_set_key(&deskey[1], &dat->ks.ks[1]);
DES_set_key(&deskey[0], &dat->ks.ks[2]);
return 1;
}
DEFINE_METHOD_FUNCTION(EVP_CIPHER, EVP_des_ede_cbc) {
memset(out, 0, sizeof(EVP_CIPHER));
out->nid = NID_des_ede_cbc;
out->block_size = 8;
out->key_len = 16;
out->iv_len = 8;
out->ctx_size = sizeof(DES_EDE_KEY);
out->flags = EVP_CIPH_CBC_MODE;
out->init = des_ede_init_key;
out->cipher = des_ede3_cbc_cipher;
}
static int des_ede_ecb_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out,
const uint8_t *in, size_t in_len) {
if (in_len < ctx->cipher->block_size) {
return 1;
}
in_len -= ctx->cipher->block_size;
DES_EDE_KEY *dat = (DES_EDE_KEY *) ctx->cipher_data;
for (size_t i = 0; i <= in_len; i += ctx->cipher->block_size) {
DES_ecb3_encrypt((DES_cblock *) (in + i), (DES_cblock *) (out + i),
&dat->ks.ks[0], &dat->ks.ks[1], &dat->ks.ks[2],
ctx->encrypt);
}
return 1;
}
DEFINE_METHOD_FUNCTION(EVP_CIPHER, EVP_des_ede) {
memset(out, 0, sizeof(EVP_CIPHER));
out->nid = NID_des_ede_ecb;
out->block_size = 8;
out->key_len = 16;
out->iv_len = 0;
out->ctx_size = sizeof(DES_EDE_KEY);
out->flags = EVP_CIPH_ECB_MODE;
out->init = des_ede_init_key;
out->cipher = des_ede_ecb_cipher;
}
DEFINE_METHOD_FUNCTION(EVP_CIPHER, EVP_des_ede3) {
memset(out, 0, sizeof(EVP_CIPHER));
out->nid = NID_des_ede3_ecb;
out->block_size = 8;
out->key_len = 24;
out->iv_len = 0;
out->ctx_size = sizeof(DES_EDE_KEY);
out->flags = EVP_CIPH_ECB_MODE;
out->init = des_ede3_init_key;
out->cipher = des_ede_ecb_cipher;
}
const EVP_CIPHER* EVP_des_ede3_ecb(void) {
return EVP_des_ede3();
}