1dded7f7e8
When in FIPS mode the approved implementations are used as normal, when not in FIPS mode the internal unapproved versions are used instead. This means that the FIPS capable OpenSSL isn't forced to use the (often lower perfomance) FIPS implementations outside FIPS mode.
313 lines
10 KiB
C
313 lines
10 KiB
C
/* crypto/evp/e_des3.c */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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#include <stdio.h>
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#include "cryptlib.h"
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#ifndef OPENSSL_NO_DES
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#include <openssl/evp.h>
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#include <openssl/objects.h>
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#include "evp_locl.h"
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#include <openssl/des.h>
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#include <openssl/rand.h>
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static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
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const unsigned char *iv,int enc);
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static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
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const unsigned char *iv,int enc);
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static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr);
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typedef struct
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{
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DES_key_schedule ks1;/* key schedule */
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DES_key_schedule ks2;/* key schedule (for ede) */
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DES_key_schedule ks3;/* key schedule (for ede3) */
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} DES_EDE_KEY;
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#define data(ctx) ((DES_EDE_KEY *)(ctx)->cipher_data)
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/* Because of various casts and different args can't use IMPLEMENT_BLOCK_CIPHER */
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static int des_ede_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t inl)
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{
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BLOCK_CIPHER_ecb_loop()
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DES_ecb3_encrypt((const_DES_cblock *)(in + i),
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(DES_cblock *)(out + i),
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&data(ctx)->ks1, &data(ctx)->ks2,
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&data(ctx)->ks3,
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ctx->encrypt);
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return 1;
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}
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static int des_ede_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t inl)
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{
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if (inl>=EVP_MAXCHUNK)
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{
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DES_ede3_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK,
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&data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
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(DES_cblock *)ctx->iv, &ctx->num);
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inl-=EVP_MAXCHUNK;
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in +=EVP_MAXCHUNK;
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out+=EVP_MAXCHUNK;
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}
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if (inl)
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DES_ede3_ofb64_encrypt(in, out, (long)inl,
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&data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
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(DES_cblock *)ctx->iv, &ctx->num);
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return 1;
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}
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static int des_ede_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t inl)
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{
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#ifdef KSSL_DEBUG
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{
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int i;
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char *cp;
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printf("des_ede_cbc_cipher(ctx=%lx, buflen=%d)\n", ctx, ctx->buf_len);
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printf("\t iv= ");
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for(i=0;i<8;i++)
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printf("%02X",ctx->iv[i]);
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printf("\n");
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}
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#endif /* KSSL_DEBUG */
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if (inl>=EVP_MAXCHUNK)
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{
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DES_ede3_cbc_encrypt(in, out, (long)EVP_MAXCHUNK,
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&data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
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(DES_cblock *)ctx->iv, ctx->encrypt);
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inl-=EVP_MAXCHUNK;
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in +=EVP_MAXCHUNK;
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out+=EVP_MAXCHUNK;
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}
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if (inl)
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DES_ede3_cbc_encrypt(in, out, (long)inl,
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&data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
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(DES_cblock *)ctx->iv, ctx->encrypt);
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return 1;
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}
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static int des_ede_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t inl)
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{
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if (inl>=EVP_MAXCHUNK)
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{
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DES_ede3_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK,
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&data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
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(DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
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inl-=EVP_MAXCHUNK;
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in +=EVP_MAXCHUNK;
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out+=EVP_MAXCHUNK;
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}
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if (inl)
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DES_ede3_cfb64_encrypt(in, out, (long)inl,
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&data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
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(DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
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return 1;
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}
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/* Although we have a CFB-r implementation for 3-DES, it doesn't pack the right
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way, so wrap it here */
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static int des_ede3_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t inl)
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{
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size_t n;
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unsigned char c[1],d[1];
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for(n=0 ; n < inl ; ++n)
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{
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c[0]=(in[n/8]&(1 << (7-n%8))) ? 0x80 : 0;
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DES_ede3_cfb_encrypt(c,d,1,1,
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&data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
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(DES_cblock *)ctx->iv,ctx->encrypt);
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out[n/8]=(out[n/8]&~(0x80 >> (unsigned int)(n%8))) |
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((d[0]&0x80) >> (unsigned int)(n%8));
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}
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return 1;
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}
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static int des_ede3_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t inl)
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{
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while (inl>=EVP_MAXCHUNK)
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{
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DES_ede3_cfb_encrypt(in,out,8,(long)EVP_MAXCHUNK,
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&data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
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(DES_cblock *)ctx->iv,ctx->encrypt);
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inl-=EVP_MAXCHUNK;
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in +=EVP_MAXCHUNK;
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out+=EVP_MAXCHUNK;
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}
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if (inl)
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DES_ede3_cfb_encrypt(in,out,8,(long)inl,
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&data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
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(DES_cblock *)ctx->iv,ctx->encrypt);
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return 1;
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}
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BLOCK_CIPHER_defs(des_ede, DES_EDE_KEY, NID_des_ede, 8, 16, 8, 64,
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EVP_CIPH_RAND_KEY, des_ede_init_key, NULL,
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EVP_CIPHER_set_asn1_iv,
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EVP_CIPHER_get_asn1_iv,
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des3_ctrl)
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#define des_ede3_cfb64_cipher des_ede_cfb64_cipher
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#define des_ede3_ofb_cipher des_ede_ofb_cipher
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#define des_ede3_cbc_cipher des_ede_cbc_cipher
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#define des_ede3_ecb_cipher des_ede_ecb_cipher
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BLOCK_CIPHER_defs(des_ede3, DES_EDE_KEY, NID_des_ede3, 8, 24, 8, 64,
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EVP_CIPH_RAND_KEY, des_ede3_init_key, NULL,
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EVP_CIPHER_set_asn1_iv,
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EVP_CIPHER_get_asn1_iv,
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des3_ctrl)
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BLOCK_CIPHER_def_cfb(des_ede3,DES_EDE_KEY,NID_des_ede3,24,8,1,
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EVP_CIPH_RAND_KEY, des_ede3_init_key,NULL,
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EVP_CIPHER_set_asn1_iv,
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EVP_CIPHER_get_asn1_iv,
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des3_ctrl)
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BLOCK_CIPHER_def_cfb(des_ede3,DES_EDE_KEY,NID_des_ede3,24,8,8,
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EVP_CIPH_RAND_KEY, des_ede3_init_key,NULL,
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EVP_CIPHER_set_asn1_iv,
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EVP_CIPHER_get_asn1_iv,
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des3_ctrl)
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static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
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const unsigned char *iv, int enc)
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{
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DES_cblock *deskey = (DES_cblock *)key;
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#ifdef EVP_CHECK_DES_KEY
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if (DES_set_key_checked(&deskey[0],&data(ctx)->ks1)
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!! DES_set_key_checked(&deskey[1],&data(ctx)->ks2))
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return 0;
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#else
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DES_set_key_unchecked(&deskey[0],&data(ctx)->ks1);
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DES_set_key_unchecked(&deskey[1],&data(ctx)->ks2);
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#endif
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memcpy(&data(ctx)->ks3,&data(ctx)->ks1,
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sizeof(data(ctx)->ks1));
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return 1;
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}
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static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
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const unsigned char *iv, int enc)
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{
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DES_cblock *deskey = (DES_cblock *)key;
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#ifdef KSSL_DEBUG
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{
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int i;
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printf("des_ede3_init_key(ctx=%lx)\n", ctx);
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printf("\tKEY= ");
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for(i=0;i<24;i++) printf("%02X",key[i]); printf("\n");
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printf("\t IV= ");
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for(i=0;i<8;i++) printf("%02X",iv[i]); printf("\n");
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}
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#endif /* KSSL_DEBUG */
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#ifdef EVP_CHECK_DES_KEY
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if (DES_set_key_checked(&deskey[0],&data(ctx)->ks1)
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|| DES_set_key_checked(&deskey[1],&data(ctx)->ks2)
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|| DES_set_key_checked(&deskey[2],&data(ctx)->ks3))
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return 0;
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#else
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DES_set_key_unchecked(&deskey[0],&data(ctx)->ks1);
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DES_set_key_unchecked(&deskey[1],&data(ctx)->ks2);
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DES_set_key_unchecked(&deskey[2],&data(ctx)->ks3);
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#endif
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return 1;
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}
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static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
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{
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DES_cblock *deskey = ptr;
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switch(type)
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{
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case EVP_CTRL_RAND_KEY:
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if (RAND_bytes(ptr, c->key_len) <= 0)
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return 0;
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DES_set_odd_parity(deskey);
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if (c->key_len >= 16)
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DES_set_odd_parity(deskey + 1);
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if (c->key_len >= 24)
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DES_set_odd_parity(deskey + 2);
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return 1;
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default:
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return -1;
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}
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}
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const EVP_CIPHER *EVP_des_ede(void)
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{
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return &des_ede_ecb;
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}
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const EVP_CIPHER *EVP_des_ede3(void)
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{
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return &des_ede3_ecb;
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}
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#endif
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