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Diffstat (limited to 'openssl/crypto/evp/e_des3.c')
-rw-r--r--openssl/crypto/evp/e_des3.c313
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diff --git a/openssl/crypto/evp/e_des3.c b/openssl/crypto/evp/e_des3.c
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--- a/openssl/crypto/evp/e_des3.c
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-/* 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>
-
-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)
-{
- if (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 */
- if (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)
-{
- if (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
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