crypto/evp/e_des.c - third_party/openssl - Git at Google

 /* crypto/evp/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 <stdio.h>
 #include "cryptlib.h"
 #ifndef OPENSSL_NO_DES
 # include <openssl/evp.h>
 # include <openssl/objects.h>
 # include "evp_locl.h"
 # include <openssl/des.h>
 # include <openssl/rand.h>

 typedef struct {
     union {
         double align;
         DES_key_schedule ks;
     } ks;
     union {
         void (*cbc) (const void *, void *, size_t, const void *, void *);
     } stream;
 } EVP_DES_KEY;

 # if defined(AES_ASM) && (defined(__sparc) || defined(__sparc__))
 /* ---------^^^ this is not a typo, just a way to detect that
  * assembler support was in general requested... */
 #  include "sparc_arch.h"

 extern unsigned int OPENSSL_sparcv9cap_P[];

 #  define SPARC_DES_CAPABLE       (OPENSSL_sparcv9cap_P[1] & CFR_DES)

 void des_t4_key_expand(const void *key, DES_key_schedule *ks);
 void des_t4_cbc_encrypt(const void *inp, void *out, size_t len,
                         DES_key_schedule *ks, unsigned char iv[8]);
 void des_t4_cbc_decrypt(const void *inp, void *out, size_t len,
                         DES_key_schedule *ks, unsigned char iv[8]);
 # endif

 static int des_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
                         const unsigned char *iv, int enc);
 static int des_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr);

 /*
  * Because of various casts and different names can't use
  * IMPLEMENT_BLOCK_CIPHER
  */

 static int des_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
                           const unsigned char *in, size_t inl)
 {
     BLOCK_CIPHER_ecb_loop()
         DES_ecb_encrypt((DES_cblock *)(in + i), (DES_cblock *)(out + i),
                         ctx->cipher_data, ctx->encrypt);
     return 1;
 }

 static int des_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
                           const unsigned char *in, size_t inl)
 {
     while (inl >= EVP_MAXCHUNK) {
         DES_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK, ctx->cipher_data,
                           (DES_cblock *)ctx->iv, &ctx->num);
         inl -= EVP_MAXCHUNK;
         in += EVP_MAXCHUNK;
         out += EVP_MAXCHUNK;
     }
     if (inl)
         DES_ofb64_encrypt(in, out, (long)inl, ctx->cipher_data,
                           (DES_cblock *)ctx->iv, &ctx->num);
     return 1;
 }

 static int des_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
                           const unsigned char *in, size_t inl)
 {
     EVP_DES_KEY *dat = (EVP_DES_KEY *) ctx->cipher_data;

     if (dat->stream.cbc) {
         (*dat->stream.cbc) (in, out, inl, &dat->ks.ks, ctx->iv);
         return 1;
     }
     while (inl >= EVP_MAXCHUNK) {
         DES_ncbc_encrypt(in, out, (long)EVP_MAXCHUNK, ctx->cipher_data,
                          (DES_cblock *)ctx->iv, ctx->encrypt);
         inl -= EVP_MAXCHUNK;
         in += EVP_MAXCHUNK;
         out += EVP_MAXCHUNK;
     }
     if (inl)
         DES_ncbc_encrypt(in, out, (long)inl, ctx->cipher_data,
                          (DES_cblock *)ctx->iv, ctx->encrypt);
     return 1;
 }

 static int des_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
                             const unsigned char *in, size_t inl)
 {
     while (inl >= EVP_MAXCHUNK) {
         DES_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK, ctx->cipher_data,
                           (DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
         inl -= EVP_MAXCHUNK;
         in += EVP_MAXCHUNK;
         out += EVP_MAXCHUNK;
     }
     if (inl)
         DES_cfb64_encrypt(in, out, (long)inl, ctx->cipher_data,
                           (DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
     return 1;
 }

 /*
  * Although we have a CFB-r implementation for DES, it doesn't pack the right
  * way, so wrap it here
  */
 static int des_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
                            const unsigned char *in, size_t inl)
 {
     size_t n, chunk = EVP_MAXCHUNK / 8;
     unsigned char c[1], d[1];

     if (inl < chunk)
         chunk = inl;

     while (inl && inl >= chunk) {
         for (n = 0; n < chunk * 8; ++n) {
             c[0] = (in[n / 8] & (1 << (7 - n % 8))) ? 0x80 : 0;
             DES_cfb_encrypt(c, d, 1, 1, ctx->cipher_data,
                             (DES_cblock *)ctx->iv, ctx->encrypt);
             out[n / 8] =
                 (out[n / 8] & ~(0x80 >> (unsigned int)(n % 8))) |
                 ((d[0] & 0x80) >> (unsigned int)(n % 8));
         }
         inl -= chunk;
         in += chunk;
         out += chunk;
         if (inl < chunk)
             chunk = inl;
     }

     return 1;
 }

 static int des_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
                            const unsigned char *in, size_t inl)
 {
     while (inl >= EVP_MAXCHUNK) {
         DES_cfb_encrypt(in, out, 8, (long)EVP_MAXCHUNK, ctx->cipher_data,
                         (DES_cblock *)ctx->iv, ctx->encrypt);
         inl -= EVP_MAXCHUNK;
         in += EVP_MAXCHUNK;
         out += EVP_MAXCHUNK;
     }
     if (inl)
         DES_cfb_encrypt(in, out, 8, (long)inl, ctx->cipher_data,
                         (DES_cblock *)ctx->iv, ctx->encrypt);
     return 1;
 }

 BLOCK_CIPHER_defs(des, EVP_DES_KEY, NID_des, 8, 8, 8, 64,
                   EVP_CIPH_RAND_KEY, des_init_key, NULL,
                   EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, des_ctrl)

     BLOCK_CIPHER_def_cfb(des, EVP_DES_KEY, NID_des, 8, 8, 1,
                      EVP_CIPH_RAND_KEY, des_init_key, NULL,
                      EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, des_ctrl)

     BLOCK_CIPHER_def_cfb(des, EVP_DES_KEY, NID_des, 8, 8, 8,
                      EVP_CIPH_RAND_KEY, des_init_key, NULL,
                      EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, des_ctrl)

 static int des_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
                         const unsigned char *iv, int enc)
 {
     DES_cblock *deskey = (DES_cblock *)key;
     EVP_DES_KEY *dat = (EVP_DES_KEY *) ctx->cipher_data;

     dat->stream.cbc = NULL;
 # if defined(SPARC_DES_CAPABLE)
     if (SPARC_DES_CAPABLE) {
         int mode = ctx->cipher->flags & EVP_CIPH_MODE;

         if (mode == EVP_CIPH_CBC_MODE) {
             des_t4_key_expand(key, &dat->ks.ks);
             dat->stream.cbc = enc ? des_t4_cbc_encrypt : des_t4_cbc_decrypt;
             return 1;
         }
     }
 # endif
 # ifdef EVP_CHECK_DES_KEY
     if (DES_set_key_checked(deskey, dat->ks.ks) != 0)
         return 0;
 # else
     DES_set_key_unchecked(deskey, ctx->cipher_data);
 # endif
     return 1;
 }

 static int des_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
 {

     switch (type) {
     case EVP_CTRL_RAND_KEY:
         if (RAND_bytes(ptr, 8) <= 0)
             return 0;
         DES_set_odd_parity((DES_cblock *)ptr);
         return 1;

     default:
         return -1;
     }
 }

 #endif
	/* crypto/evp/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 <stdio.h>
	#include "cryptlib.h"
	#ifndef OPENSSL_NO_DES
	# include <openssl/evp.h>
	# include <openssl/objects.h>
	# include "evp_locl.h"
	# include <openssl/des.h>
	# include <openssl/rand.h>

	typedef struct {
	union {
	double align;
	DES_key_schedule ks;
	} ks;
	union {
	void (cbc) (const void , void , size_t, const void , void *);
	} stream;
	} EVP_DES_KEY;

	# if defined(AES_ASM) && (defined(__sparc) \|\| defined(__sparc__))
	/* ---------^^^ this is not a typo, just a way to detect that
	* assembler support was in general requested... */
	# include "sparc_arch.h"

	extern unsigned int OPENSSL_sparcv9cap_P[];

	# define SPARC_DES_CAPABLE (OPENSSL_sparcv9cap_P[1] & CFR_DES)

	void des_t4_key_expand(const void key, DES_key_schedule ks);
	void des_t4_cbc_encrypt(const void inp, void out, size_t len,
	DES_key_schedule *ks, unsigned char iv[8]);
	void des_t4_cbc_decrypt(const void inp, void out, size_t len,
	DES_key_schedule *ks, unsigned char iv[8]);
	# endif

	static int des_init_key(EVP_CIPHER_CTX ctx, const unsigned char key,
	const unsigned char *iv, int enc);
	static int des_ctrl(EVP_CIPHER_CTX c, int type, int arg, void ptr);

	/*
	* Because of various casts and different names can't use
	* IMPLEMENT_BLOCK_CIPHER
	*/

	static int des_ecb_cipher(EVP_CIPHER_CTX ctx, unsigned char out,
	const unsigned char *in, size_t inl)
	{
	BLOCK_CIPHER_ecb_loop()
	DES_ecb_encrypt((DES_cblock )(in + i), (DES_cblock )(out + i),
	ctx->cipher_data, ctx->encrypt);
	return 1;
	}

	static int des_ofb_cipher(EVP_CIPHER_CTX ctx, unsigned char out,
	const unsigned char *in, size_t inl)
	{
	while (inl >= EVP_MAXCHUNK) {
	DES_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK, ctx->cipher_data,
	(DES_cblock *)ctx->iv, &ctx->num);
	inl -= EVP_MAXCHUNK;
	in += EVP_MAXCHUNK;
	out += EVP_MAXCHUNK;
	}
	if (inl)
	DES_ofb64_encrypt(in, out, (long)inl, ctx->cipher_data,
	(DES_cblock *)ctx->iv, &ctx->num);
	return 1;
	}

	static int des_cbc_cipher(EVP_CIPHER_CTX ctx, unsigned char out,
	const unsigned char *in, size_t inl)
	{
	EVP_DES_KEY dat = (EVP_DES_KEY ) ctx->cipher_data;

	if (dat->stream.cbc) {
	(*dat->stream.cbc) (in, out, inl, &dat->ks.ks, ctx->iv);
	return 1;
	}
	while (inl >= EVP_MAXCHUNK) {
	DES_ncbc_encrypt(in, out, (long)EVP_MAXCHUNK, ctx->cipher_data,
	(DES_cblock *)ctx->iv, ctx->encrypt);
	inl -= EVP_MAXCHUNK;
	in += EVP_MAXCHUNK;
	out += EVP_MAXCHUNK;
	}
	if (inl)
	DES_ncbc_encrypt(in, out, (long)inl, ctx->cipher_data,
	(DES_cblock *)ctx->iv, ctx->encrypt);
	return 1;
	}

	static int des_cfb64_cipher(EVP_CIPHER_CTX ctx, unsigned char out,
	const unsigned char *in, size_t inl)
	{
	while (inl >= EVP_MAXCHUNK) {
	DES_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK, ctx->cipher_data,
	(DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
	inl -= EVP_MAXCHUNK;
	in += EVP_MAXCHUNK;
	out += EVP_MAXCHUNK;
	}
	if (inl)
	DES_cfb64_encrypt(in, out, (long)inl, ctx->cipher_data,
	(DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
	return 1;
	}

	/*
	* Although we have a CFB-r implementation for DES, it doesn't pack the right
	* way, so wrap it here
	*/
	static int des_cfb1_cipher(EVP_CIPHER_CTX ctx, unsigned char out,
	const unsigned char *in, size_t inl)
	{
	size_t n, chunk = EVP_MAXCHUNK / 8;
	unsigned char c[1], d[1];

	if (inl < chunk)
	chunk = inl;

	while (inl && inl >= chunk) {
	for (n = 0; n < chunk * 8; ++n) {
	c[0] = (in[n / 8] & (1 << (7 - n % 8))) ? 0x80 : 0;
	DES_cfb_encrypt(c, d, 1, 1, ctx->cipher_data,
	(DES_cblock *)ctx->iv, ctx->encrypt);
	out[n / 8] =
	(out[n / 8] & ~(0x80 >> (unsigned int)(n % 8))) \|
	((d[0] & 0x80) >> (unsigned int)(n % 8));
	}
	inl -= chunk;
	in += chunk;
	out += chunk;
	if (inl < chunk)
	chunk = inl;
	}

	return 1;
	}

	static int des_cfb8_cipher(EVP_CIPHER_CTX ctx, unsigned char out,
	const unsigned char *in, size_t inl)
	{
	while (inl >= EVP_MAXCHUNK) {
	DES_cfb_encrypt(in, out, 8, (long)EVP_MAXCHUNK, ctx->cipher_data,
	(DES_cblock *)ctx->iv, ctx->encrypt);
	inl -= EVP_MAXCHUNK;
	in += EVP_MAXCHUNK;
	out += EVP_MAXCHUNK;
	}
	if (inl)
	DES_cfb_encrypt(in, out, 8, (long)inl, ctx->cipher_data,
	(DES_cblock *)ctx->iv, ctx->encrypt);
	return 1;
	}

	BLOCK_CIPHER_defs(des, EVP_DES_KEY, NID_des, 8, 8, 8, 64,
	EVP_CIPH_RAND_KEY, des_init_key, NULL,
	EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, des_ctrl)

	BLOCK_CIPHER_def_cfb(des, EVP_DES_KEY, NID_des, 8, 8, 1,
	EVP_CIPH_RAND_KEY, des_init_key, NULL,
	EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, des_ctrl)

	BLOCK_CIPHER_def_cfb(des, EVP_DES_KEY, NID_des, 8, 8, 8,
	EVP_CIPH_RAND_KEY, des_init_key, NULL,
	EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, des_ctrl)

	static int des_init_key(EVP_CIPHER_CTX ctx, const unsigned char key,
	const unsigned char *iv, int enc)
	{
	DES_cblock deskey = (DES_cblock )key;
	EVP_DES_KEY dat = (EVP_DES_KEY ) ctx->cipher_data;

	dat->stream.cbc = NULL;
	# if defined(SPARC_DES_CAPABLE)
	if (SPARC_DES_CAPABLE) {
	int mode = ctx->cipher->flags & EVP_CIPH_MODE;

	if (mode == EVP_CIPH_CBC_MODE) {
	des_t4_key_expand(key, &dat->ks.ks);
	dat->stream.cbc = enc ? des_t4_cbc_encrypt : des_t4_cbc_decrypt;
	return 1;
	}
	}
	# endif
	# ifdef EVP_CHECK_DES_KEY
	if (DES_set_key_checked(deskey, dat->ks.ks) != 0)
	return 0;
	# else
	DES_set_key_unchecked(deskey, ctx->cipher_data);
	# endif
	return 1;
	}

	static int des_ctrl(EVP_CIPHER_CTX c, int type, int arg, void ptr)
	{

	switch (type) {
	case EVP_CTRL_RAND_KEY:
	if (RAND_bytes(ptr, 8) <= 0)
	return 0;
	DES_set_odd_parity((DES_cblock *)ptr);
	return 1;

	default:
	return -1;
	}
	}

	#endif