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- /* 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;
- }
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