kopia lustrzana https://github.com/ryukoposting/Signal-Android
317 wiersze
10 KiB
C
317 wiersze
10 KiB
C
/* crypto/evp/e_des3.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>
|
|
|
|
#ifndef OPENSSL_FIPS
|
|
|
|
static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
|
const unsigned char *iv,int enc);
|
|
|
|
static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
|
const unsigned char *iv,int enc);
|
|
|
|
static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr);
|
|
|
|
typedef struct
|
|
{
|
|
DES_key_schedule ks1;/* key schedule */
|
|
DES_key_schedule ks2;/* key schedule (for ede) */
|
|
DES_key_schedule ks3;/* key schedule (for ede3) */
|
|
} DES_EDE_KEY;
|
|
|
|
#define data(ctx) ((DES_EDE_KEY *)(ctx)->cipher_data)
|
|
|
|
/* Because of various casts and different args can't use IMPLEMENT_BLOCK_CIPHER */
|
|
|
|
static int des_ede_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
const unsigned char *in, size_t inl)
|
|
{
|
|
BLOCK_CIPHER_ecb_loop()
|
|
DES_ecb3_encrypt((const_DES_cblock *)(in + i),
|
|
(DES_cblock *)(out + i),
|
|
&data(ctx)->ks1, &data(ctx)->ks2,
|
|
&data(ctx)->ks3,
|
|
ctx->encrypt);
|
|
return 1;
|
|
}
|
|
|
|
static int des_ede_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
const unsigned char *in, size_t inl)
|
|
{
|
|
while (inl>=EVP_MAXCHUNK)
|
|
{
|
|
DES_ede3_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK,
|
|
&data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
|
|
(DES_cblock *)ctx->iv, &ctx->num);
|
|
inl-=EVP_MAXCHUNK;
|
|
in +=EVP_MAXCHUNK;
|
|
out+=EVP_MAXCHUNK;
|
|
}
|
|
if (inl)
|
|
DES_ede3_ofb64_encrypt(in, out, (long)inl,
|
|
&data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
|
|
(DES_cblock *)ctx->iv, &ctx->num);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int des_ede_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
const unsigned char *in, size_t inl)
|
|
{
|
|
#ifdef KSSL_DEBUG
|
|
{
|
|
int i;
|
|
char *cp;
|
|
printf("des_ede_cbc_cipher(ctx=%lx, buflen=%d)\n", ctx, ctx->buf_len);
|
|
printf("\t iv= ");
|
|
for(i=0;i<8;i++)
|
|
printf("%02X",ctx->iv[i]);
|
|
printf("\n");
|
|
}
|
|
#endif /* KSSL_DEBUG */
|
|
while (inl>=EVP_MAXCHUNK)
|
|
{
|
|
DES_ede3_cbc_encrypt(in, out, (long)EVP_MAXCHUNK,
|
|
&data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
|
|
(DES_cblock *)ctx->iv, ctx->encrypt);
|
|
inl-=EVP_MAXCHUNK;
|
|
in +=EVP_MAXCHUNK;
|
|
out+=EVP_MAXCHUNK;
|
|
}
|
|
if (inl)
|
|
DES_ede3_cbc_encrypt(in, out, (long)inl,
|
|
&data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
|
|
(DES_cblock *)ctx->iv, ctx->encrypt);
|
|
return 1;
|
|
}
|
|
|
|
static int des_ede_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
const unsigned char *in, size_t inl)
|
|
{
|
|
while (inl>=EVP_MAXCHUNK)
|
|
{
|
|
DES_ede3_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK,
|
|
&data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
|
|
(DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
|
|
inl-=EVP_MAXCHUNK;
|
|
in +=EVP_MAXCHUNK;
|
|
out+=EVP_MAXCHUNK;
|
|
}
|
|
if (inl)
|
|
DES_ede3_cfb64_encrypt(in, out, (long)inl,
|
|
&data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
|
|
(DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
|
|
return 1;
|
|
}
|
|
|
|
/* Although we have a CFB-r implementation for 3-DES, it doesn't pack the right
|
|
way, so wrap it here */
|
|
static int des_ede3_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
const unsigned char *in, size_t inl)
|
|
{
|
|
size_t n;
|
|
unsigned char c[1],d[1];
|
|
|
|
for(n=0 ; n < inl ; ++n)
|
|
{
|
|
c[0]=(in[n/8]&(1 << (7-n%8))) ? 0x80 : 0;
|
|
DES_ede3_cfb_encrypt(c,d,1,1,
|
|
&data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
|
|
(DES_cblock *)ctx->iv,ctx->encrypt);
|
|
out[n/8]=(out[n/8]&~(0x80 >> (unsigned int)(n%8))) |
|
|
((d[0]&0x80) >> (unsigned int)(n%8));
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int des_ede3_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
const unsigned char *in, size_t inl)
|
|
{
|
|
while (inl>=EVP_MAXCHUNK)
|
|
{
|
|
DES_ede3_cfb_encrypt(in,out,8,(long)EVP_MAXCHUNK,
|
|
&data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
|
|
(DES_cblock *)ctx->iv,ctx->encrypt);
|
|
inl-=EVP_MAXCHUNK;
|
|
in +=EVP_MAXCHUNK;
|
|
out+=EVP_MAXCHUNK;
|
|
}
|
|
if (inl)
|
|
DES_ede3_cfb_encrypt(in,out,8,(long)inl,
|
|
&data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
|
|
(DES_cblock *)ctx->iv,ctx->encrypt);
|
|
return 1;
|
|
}
|
|
|
|
BLOCK_CIPHER_defs(des_ede, DES_EDE_KEY, NID_des_ede, 8, 16, 8, 64,
|
|
EVP_CIPH_RAND_KEY, des_ede_init_key, NULL,
|
|
EVP_CIPHER_set_asn1_iv,
|
|
EVP_CIPHER_get_asn1_iv,
|
|
des3_ctrl)
|
|
|
|
#define des_ede3_cfb64_cipher des_ede_cfb64_cipher
|
|
#define des_ede3_ofb_cipher des_ede_ofb_cipher
|
|
#define des_ede3_cbc_cipher des_ede_cbc_cipher
|
|
#define des_ede3_ecb_cipher des_ede_ecb_cipher
|
|
|
|
BLOCK_CIPHER_defs(des_ede3, DES_EDE_KEY, NID_des_ede3, 8, 24, 8, 64,
|
|
EVP_CIPH_RAND_KEY, des_ede3_init_key, NULL,
|
|
EVP_CIPHER_set_asn1_iv,
|
|
EVP_CIPHER_get_asn1_iv,
|
|
des3_ctrl)
|
|
|
|
BLOCK_CIPHER_def_cfb(des_ede3,DES_EDE_KEY,NID_des_ede3,24,8,1,
|
|
EVP_CIPH_RAND_KEY, des_ede3_init_key,NULL,
|
|
EVP_CIPHER_set_asn1_iv,
|
|
EVP_CIPHER_get_asn1_iv,
|
|
des3_ctrl)
|
|
|
|
BLOCK_CIPHER_def_cfb(des_ede3,DES_EDE_KEY,NID_des_ede3,24,8,8,
|
|
EVP_CIPH_RAND_KEY, des_ede3_init_key,NULL,
|
|
EVP_CIPHER_set_asn1_iv,
|
|
EVP_CIPHER_get_asn1_iv,
|
|
des3_ctrl)
|
|
|
|
static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
|
const unsigned char *iv, int enc)
|
|
{
|
|
DES_cblock *deskey = (DES_cblock *)key;
|
|
#ifdef EVP_CHECK_DES_KEY
|
|
if (DES_set_key_checked(&deskey[0],&data(ctx)->ks1)
|
|
!! DES_set_key_checked(&deskey[1],&data(ctx)->ks2))
|
|
return 0;
|
|
#else
|
|
DES_set_key_unchecked(&deskey[0],&data(ctx)->ks1);
|
|
DES_set_key_unchecked(&deskey[1],&data(ctx)->ks2);
|
|
#endif
|
|
memcpy(&data(ctx)->ks3,&data(ctx)->ks1,
|
|
sizeof(data(ctx)->ks1));
|
|
return 1;
|
|
}
|
|
|
|
static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
|
const unsigned char *iv, int enc)
|
|
{
|
|
DES_cblock *deskey = (DES_cblock *)key;
|
|
#ifdef KSSL_DEBUG
|
|
{
|
|
int i;
|
|
printf("des_ede3_init_key(ctx=%lx)\n", ctx);
|
|
printf("\tKEY= ");
|
|
for(i=0;i<24;i++) printf("%02X",key[i]); printf("\n");
|
|
printf("\t IV= ");
|
|
for(i=0;i<8;i++) printf("%02X",iv[i]); printf("\n");
|
|
}
|
|
#endif /* KSSL_DEBUG */
|
|
|
|
#ifdef EVP_CHECK_DES_KEY
|
|
if (DES_set_key_checked(&deskey[0],&data(ctx)->ks1)
|
|
|| DES_set_key_checked(&deskey[1],&data(ctx)->ks2)
|
|
|| DES_set_key_checked(&deskey[2],&data(ctx)->ks3))
|
|
return 0;
|
|
#else
|
|
DES_set_key_unchecked(&deskey[0],&data(ctx)->ks1);
|
|
DES_set_key_unchecked(&deskey[1],&data(ctx)->ks2);
|
|
DES_set_key_unchecked(&deskey[2],&data(ctx)->ks3);
|
|
#endif
|
|
return 1;
|
|
}
|
|
|
|
static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
|
|
{
|
|
|
|
DES_cblock *deskey = ptr;
|
|
|
|
switch(type)
|
|
{
|
|
case EVP_CTRL_RAND_KEY:
|
|
if (RAND_bytes(ptr, c->key_len) <= 0)
|
|
return 0;
|
|
DES_set_odd_parity(deskey);
|
|
if (c->key_len >= 16)
|
|
DES_set_odd_parity(deskey + 1);
|
|
if (c->key_len >= 24)
|
|
DES_set_odd_parity(deskey + 2);
|
|
return 1;
|
|
|
|
default:
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
const EVP_CIPHER *EVP_des_ede(void)
|
|
{
|
|
return &des_ede_ecb;
|
|
}
|
|
|
|
const EVP_CIPHER *EVP_des_ede3(void)
|
|
{
|
|
return &des_ede3_ecb;
|
|
}
|
|
#endif
|
|
#endif
|