crypto/cipher/e_des.c - boringssl - Git at Google

 /* 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/obj.h>

 #include "internal.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;
 }

 static const EVP_CIPHER des_cbc = {
     NID_des_cbc,         8 /* block_size */,  8 /* key_size */,
     8 /* iv_len */,      sizeof(EVP_DES_KEY), EVP_CIPH_CBC_MODE,
     NULL /* app_data */, des_init_key,        des_cbc_cipher,
     NULL /* cleanup */,  NULL /* ctrl */, };

 const EVP_CIPHER *EVP_des_cbc(void) { return &des_cbc; }


 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;
   size_t i;
   for (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;
 }

 static const EVP_CIPHER des_ecb = {
     NID_des_ecb,         8 /* block_size */,  8 /* key_size */,
     0 /* iv_len */,      sizeof(EVP_DES_KEY), EVP_CIPH_ECB_MODE,
     NULL /* app_data */, des_init_key,        des_ecb_cipher,
     NULL /* cleanup */,  NULL /* ctrl */, };

 const EVP_CIPHER *EVP_des_ecb(void) { return &des_ecb; }


 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;
 }

 static const EVP_CIPHER des_ede3_cbc = {
     NID_des_ede3_cbc,    8 /* block_size */,  24 /* key_size */,
     8 /* iv_len */,      sizeof(DES_EDE_KEY), EVP_CIPH_CBC_MODE,
     NULL /* app_data */, des_ede3_init_key,   des_ede3_cbc_cipher,
     NULL /* cleanup */,  NULL /* ctrl */, };

 const EVP_CIPHER *EVP_des_ede3_cbc(void) { return &des_ede3_cbc; }


 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;
 }

 static const EVP_CIPHER des_ede_cbc = {
     NID_des_ede_cbc,     8 /* block_size */,  16 /* key_size */,
     8 /* iv_len */,      sizeof(DES_EDE_KEY), EVP_CIPH_CBC_MODE,
     NULL /* app_data */, des_ede_init_key ,   des_ede3_cbc_cipher,
     NULL /* cleanup */,  NULL /* ctrl */, };

 const EVP_CIPHER *EVP_des_ede_cbc(void) { return &des_ede_cbc; }


 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;
   size_t i;
   for (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;
 }

 static const EVP_CIPHER des_ede_ecb = {
     NID_des_ede_cbc,     8 /* block_size */,  16 /* key_size */,
     0 /* iv_len */,      sizeof(DES_EDE_KEY), EVP_CIPH_ECB_MODE,
     NULL /* app_data */, des_ede_init_key ,   des_ede_ecb_cipher,
     NULL /* cleanup */,  NULL /* ctrl */, };

 const EVP_CIPHER *EVP_des_ede(void) { return &des_ede_ecb; }
	/* 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/obj.h>

	#include "internal.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;
	}

	static const EVP_CIPHER des_cbc = {
	NID_des_cbc, 8 /* block_size /, 8 / key_size */,
	8 /* iv_len */, sizeof(EVP_DES_KEY), EVP_CIPH_CBC_MODE,
	NULL /* app_data */, des_init_key, des_cbc_cipher,
	NULL /* cleanup /, NULL / ctrl */, };

	const EVP_CIPHER *EVP_des_cbc(void) { return &des_cbc; }


	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;
	size_t i;
	for (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;
	}

	static const EVP_CIPHER des_ecb = {
	NID_des_ecb, 8 /* block_size /, 8 / key_size */,
	0 /* iv_len */, sizeof(EVP_DES_KEY), EVP_CIPH_ECB_MODE,
	NULL /* app_data */, des_init_key, des_ecb_cipher,
	NULL /* cleanup /, NULL / ctrl */, };

	const EVP_CIPHER *EVP_des_ecb(void) { return &des_ecb; }


	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;
	}

	static const EVP_CIPHER des_ede3_cbc = {
	NID_des_ede3_cbc, 8 /* block_size /, 24 / key_size */,
	8 /* iv_len */, sizeof(DES_EDE_KEY), EVP_CIPH_CBC_MODE,
	NULL /* app_data */, des_ede3_init_key, des_ede3_cbc_cipher,
	NULL /* cleanup /, NULL / ctrl */, };

	const EVP_CIPHER *EVP_des_ede3_cbc(void) { return &des_ede3_cbc; }


	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;
	}

	static const EVP_CIPHER des_ede_cbc = {
	NID_des_ede_cbc, 8 /* block_size /, 16 / key_size */,
	8 /* iv_len */, sizeof(DES_EDE_KEY), EVP_CIPH_CBC_MODE,
	NULL /* app_data */, des_ede_init_key , des_ede3_cbc_cipher,
	NULL /* cleanup /, NULL / ctrl */, };

	const EVP_CIPHER *EVP_des_ede_cbc(void) { return &des_ede_cbc; }


	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;
	size_t i;
	for (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;
	}

	static const EVP_CIPHER des_ede_ecb = {
	NID_des_ede_cbc, 8 /* block_size /, 16 / key_size */,
	0 /* iv_len */, sizeof(DES_EDE_KEY), EVP_CIPH_ECB_MODE,
	NULL /* app_data */, des_ede_init_key , des_ede_ecb_cipher,
	NULL /* cleanup /, NULL / ctrl */, };

	const EVP_CIPHER *EVP_des_ede(void) { return &des_ede_ecb; }