2000-05-30 10:10:57 +08:00
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/* crypto/evp/e_des3.c */
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1998-12-21 18:56:39 +08:00
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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1998-12-21 18:52:47 +08:00
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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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2014-10-20 20:13:59 +08:00
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2011-04-05 23:24:10 +08:00
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1998-12-21 18:52:47 +08:00
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#include <stdio.h>
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#include "cryptlib.h"
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2003-03-21 07:29:38 +08:00
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#ifndef OPENSSL_NO_DES
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1999-04-24 06:13:45 +08:00
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#include <openssl/evp.h>
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#include <openssl/objects.h>
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2000-05-30 10:10:57 +08:00
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#include "evp_locl.h"
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2001-07-31 07:57:25 +08:00
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#include <openssl/des.h>
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2004-03-29 01:38:00 +08:00
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#include <openssl/rand.h>
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1998-12-21 18:52:47 +08:00
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2013-03-31 20:32:05 +08:00
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typedef struct
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{
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union { double align; DES_key_schedule ks[3]; } ks;
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union {
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void (*cbc)(const void *,void *,size_t,const void *,void *);
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} stream;
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} DES_EDE_KEY;
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#define ks1 ks.ks[0]
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#define ks2 ks.ks[1]
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#define ks3 ks.ks[2]
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#if defined(AES_ASM) && (defined(__sparc) || defined(__sparc__))
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/* ---------^^^ this is not a typo, just a way to detect that
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* assembler support was in general requested... */
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#include "sparc_arch.h"
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extern unsigned int OPENSSL_sparcv9cap_P[];
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#define SPARC_DES_CAPABLE (OPENSSL_sparcv9cap_P[1] & CFR_DES)
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void des_t4_key_expand(const void *key, DES_key_schedule *ks);
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void des_t4_ede3_cbc_encrypt(const void *inp,void *out,size_t len,
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DES_key_schedule *ks,unsigned char iv[8]);
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void des_t4_ede3_cbc_decrypt(const void *inp,void *out,size_t len,
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DES_key_schedule *ks,unsigned char iv[8]);
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#endif
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2000-06-03 22:13:58 +08:00
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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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2000-05-30 10:10:57 +08:00
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2000-06-03 22:13:58 +08:00
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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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1998-12-21 18:52:47 +08:00
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2004-03-29 01:38:00 +08:00
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static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr);
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2001-07-31 07:57:25 +08:00
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#define data(ctx) ((DES_EDE_KEY *)(ctx)->cipher_data)
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2000-05-30 10:10:57 +08:00
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/* Because of various casts and different args can't use IMPLEMENT_BLOCK_CIPHER */
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1998-12-21 18:52:47 +08:00
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2000-06-03 22:13:58 +08:00
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static int des_ede_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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2008-11-01 03:48:25 +08:00
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const unsigned char *in, size_t inl)
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2000-05-30 10:10:57 +08:00
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{
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BLOCK_CIPHER_ecb_loop()
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2004-01-29 03:05:35 +08:00
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DES_ecb3_encrypt((const_DES_cblock *)(in + i),
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(DES_cblock *)(out + i),
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2001-07-31 07:57:25 +08:00
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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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2000-05-30 10:10:57 +08:00
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return 1;
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}
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2000-06-03 22:13:58 +08:00
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static int des_ede_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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2008-11-01 03:48:25 +08:00
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const unsigned char *in, size_t inl)
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2000-05-30 10:10:57 +08:00
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{
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2013-10-03 16:55:49 +08:00
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while (inl>=EVP_MAXCHUNK)
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2008-11-01 03:48:25 +08:00
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{
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DES_ede3_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK,
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2001-07-31 07:57:25 +08:00
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&data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
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2001-10-25 05:21:12 +08:00
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(DES_cblock *)ctx->iv, &ctx->num);
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2008-11-01 03:48:25 +08:00
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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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2000-05-30 10:10:57 +08:00
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return 1;
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}
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2000-06-03 22:13:58 +08:00
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static int des_ede_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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2008-11-01 03:48:25 +08:00
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const unsigned char *in, size_t inl)
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2000-05-30 10:10:57 +08:00
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{
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2013-03-31 20:32:05 +08:00
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DES_EDE_KEY *dat = data(ctx);
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2000-12-01 06:53:34 +08:00
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#ifdef KSSL_DEBUG
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{
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int i;
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2014-12-16 11:13:41 +08:00
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fprintf(stderr,"des_ede_cbc_cipher(ctx=%p, buflen=%d)\n", ctx, ctx->buf_len);
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fprintf(stderr,"\t iv= ");
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2000-12-01 06:53:34 +08:00
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for(i=0;i<8;i++)
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2014-12-16 11:13:41 +08:00
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fprintf(stderr,"%02X",ctx->iv[i]);
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fprintf(stderr,"\n");
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2000-12-01 06:53:34 +08:00
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}
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#endif /* KSSL_DEBUG */
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2013-03-31 20:32:05 +08:00
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if (dat->stream.cbc)
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{
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(*dat->stream.cbc)(in,out,inl,&dat->ks,ctx->iv);
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return 1;
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}
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2013-10-03 16:55:49 +08:00
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while (inl>=EVP_MAXCHUNK)
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2008-11-01 03:48:25 +08:00
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{
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DES_ede3_cbc_encrypt(in, out, (long)EVP_MAXCHUNK,
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2013-03-31 20:32:05 +08:00
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&dat->ks1, &dat->ks2, &dat->ks3,
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2001-10-25 05:21:12 +08:00
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(DES_cblock *)ctx->iv, ctx->encrypt);
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2008-11-01 03:48:25 +08:00
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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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2013-03-31 20:32:05 +08:00
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&dat->ks1, &dat->ks2, &dat->ks3,
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2008-11-01 03:48:25 +08:00
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(DES_cblock *)ctx->iv, ctx->encrypt);
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2000-05-30 10:10:57 +08:00
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return 1;
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}
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2004-01-28 05:47:35 +08:00
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static int des_ede_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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2008-11-01 03:48:25 +08:00
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const unsigned char *in, size_t inl)
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2000-05-30 10:10:57 +08:00
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{
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2013-10-03 16:55:49 +08:00
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while (inl>=EVP_MAXCHUNK)
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2008-11-01 03:48:25 +08:00
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{
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DES_ede3_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK,
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2001-07-31 07:57:25 +08:00
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&data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
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2001-10-25 05:21:12 +08:00
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(DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
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2008-11-01 03:48:25 +08:00
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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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2000-05-30 10:10:57 +08:00
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return 1;
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}
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2004-01-28 05:47:35 +08:00
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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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2008-11-01 03:48:25 +08:00
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const unsigned char *in, size_t inl)
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2004-01-28 05:47:35 +08:00
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{
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2008-11-01 03:48:25 +08:00
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size_t n;
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2004-01-28 05:47:35 +08:00
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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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2008-12-29 20:35:49 +08:00
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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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2004-01-28 05:47:35 +08:00
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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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2008-11-01 03:48:25 +08:00
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const unsigned char *in, size_t inl)
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2004-01-28 05:47:35 +08:00
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{
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2008-11-01 03:48:25 +08:00
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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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2004-01-28 05:47:35 +08:00
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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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2008-11-01 03:48:25 +08:00
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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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2004-01-28 05:47:35 +08:00
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return 1;
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}
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2002-02-16 20:39:07 +08:00
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BLOCK_CIPHER_defs(des_ede, DES_EDE_KEY, NID_des_ede, 8, 16, 8, 64,
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2011-01-26 23:25:33 +08:00
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EVP_CIPH_RAND_KEY|EVP_CIPH_FLAG_DEFAULT_ASN1,
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des_ede_init_key, NULL, NULL, NULL,
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2004-03-29 01:38:00 +08:00
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des3_ctrl)
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2000-05-30 10:10:57 +08:00
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2004-01-28 05:47:35 +08:00
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#define des_ede3_cfb64_cipher des_ede_cfb64_cipher
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2000-05-30 10:10:57 +08:00
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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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2002-02-16 20:39:07 +08:00
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BLOCK_CIPHER_defs(des_ede3, DES_EDE_KEY, NID_des_ede3, 8, 24, 8, 64,
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2014-10-19 08:29:04 +08:00
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EVP_CIPH_RAND_KEY|EVP_CIPH_FLAG_DEFAULT_ASN1,
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2011-01-26 23:25:33 +08:00
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des_ede3_init_key, NULL, NULL, NULL,
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des3_ctrl)
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1998-12-21 18:52:47 +08:00
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2004-03-29 01:38:00 +08:00
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BLOCK_CIPHER_def_cfb(des_ede3,DES_EDE_KEY,NID_des_ede3,24,8,1,
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2014-10-19 08:29:04 +08:00
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EVP_CIPH_RAND_KEY|EVP_CIPH_FLAG_DEFAULT_ASN1,
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2011-01-26 23:25:33 +08:00
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des_ede3_init_key, NULL, NULL, NULL,
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des3_ctrl)
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2004-01-28 05:47:35 +08:00
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2004-03-29 01:38:00 +08:00
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BLOCK_CIPHER_def_cfb(des_ede3,DES_EDE_KEY,NID_des_ede3,24,8,8,
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2014-10-19 08:29:04 +08:00
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EVP_CIPH_RAND_KEY|EVP_CIPH_FLAG_DEFAULT_ASN1,
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2011-01-26 23:25:33 +08:00
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des_ede3_init_key, NULL, NULL, NULL,
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des3_ctrl)
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2004-01-28 05:47:35 +08:00
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2000-06-03 22:13:58 +08:00
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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)
|
1998-12-21 18:52:47 +08:00
|
|
|
{
|
2001-10-25 05:21:12 +08:00
|
|
|
DES_cblock *deskey = (DES_cblock *)key;
|
2013-03-31 20:32:05 +08:00
|
|
|
DES_EDE_KEY *dat = data(ctx);
|
|
|
|
|
|
|
|
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(&deskey[0],&dat->ks1);
|
|
|
|
des_t4_key_expand(&deskey[1],&dat->ks2);
|
|
|
|
memcpy(&dat->ks3,&dat->ks1,sizeof(dat->ks1));
|
|
|
|
dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt :
|
|
|
|
des_t4_ede3_cbc_decrypt;
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|
2004-03-29 01:38:00 +08:00
|
|
|
#ifdef EVP_CHECK_DES_KEY
|
2013-03-31 20:32:05 +08:00
|
|
|
if (DES_set_key_checked(&deskey[0],&dat->ks1)
|
|
|
|
!! DES_set_key_checked(&deskey[1],&dat->ks2))
|
2004-03-29 01:38:00 +08:00
|
|
|
return 0;
|
|
|
|
#else
|
2013-03-31 20:32:05 +08:00
|
|
|
DES_set_key_unchecked(&deskey[0],&dat->ks1);
|
|
|
|
DES_set_key_unchecked(&deskey[1],&dat->ks2);
|
2004-03-29 01:38:00 +08:00
|
|
|
#endif
|
2013-03-31 20:32:05 +08:00
|
|
|
memcpy(&dat->ks3,&dat->ks1,
|
|
|
|
sizeof(dat->ks1));
|
2000-05-27 20:38:43 +08:00
|
|
|
return 1;
|
1998-12-21 18:52:47 +08:00
|
|
|
}
|
|
|
|
|
2000-06-03 22:13:58 +08:00
|
|
|
static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
|
|
|
const unsigned char *iv, int enc)
|
1998-12-21 18:52:47 +08:00
|
|
|
{
|
2001-10-25 05:21:12 +08:00
|
|
|
DES_cblock *deskey = (DES_cblock *)key;
|
2013-03-31 20:32:05 +08:00
|
|
|
DES_EDE_KEY *dat = data(ctx);
|
|
|
|
|
2000-12-01 06:53:34 +08:00
|
|
|
#ifdef KSSL_DEBUG
|
|
|
|
{
|
|
|
|
int i;
|
2014-12-16 11:13:41 +08:00
|
|
|
fprintf(stderr,"des_ede3_init_key(ctx=%p)\n", ctx);
|
|
|
|
fprintf(stderr,"\tKEY= ");
|
|
|
|
for(i=0;i<24;i++) fprintf(stderr,"%02X",key[i]); fprintf(stderr,"\n");
|
|
|
|
if (iv)
|
|
|
|
{
|
|
|
|
fprintf(stderr,"\t IV= ");
|
|
|
|
for(i=0;i<8;i++) fprintf(stderr,"%02X",iv[i]); fprintf(stderr,"\n");
|
|
|
|
}
|
2000-12-01 06:53:34 +08:00
|
|
|
}
|
|
|
|
#endif /* KSSL_DEBUG */
|
1999-05-16 20:26:16 +08:00
|
|
|
|
2013-03-31 20:32:05 +08:00
|
|
|
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(&deskey[0],&dat->ks1);
|
|
|
|
des_t4_key_expand(&deskey[1],&dat->ks2);
|
|
|
|
des_t4_key_expand(&deskey[2],&dat->ks3);
|
|
|
|
dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt :
|
|
|
|
des_t4_ede3_cbc_decrypt;
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|
2004-03-29 01:38:00 +08:00
|
|
|
#ifdef EVP_CHECK_DES_KEY
|
2013-03-31 20:32:05 +08:00
|
|
|
if (DES_set_key_checked(&deskey[0],&dat->ks1)
|
|
|
|
|| DES_set_key_checked(&deskey[1],&dat->ks2)
|
|
|
|
|| DES_set_key_checked(&deskey[2],&dat->ks3))
|
2004-03-29 01:38:00 +08:00
|
|
|
return 0;
|
|
|
|
#else
|
2013-03-31 20:32:05 +08:00
|
|
|
DES_set_key_unchecked(&deskey[0],&dat->ks1);
|
|
|
|
DES_set_key_unchecked(&deskey[1],&dat->ks2);
|
|
|
|
DES_set_key_unchecked(&deskey[2],&dat->ks3);
|
2004-03-29 01:38:00 +08:00
|
|
|
#endif
|
2000-05-27 20:38:43 +08:00
|
|
|
return 1;
|
1998-12-21 18:52:47 +08:00
|
|
|
}
|
2000-05-30 10:10:57 +08:00
|
|
|
|
2004-03-29 01:38:00 +08:00
|
|
|
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;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2001-03-09 10:51:02 +08:00
|
|
|
const EVP_CIPHER *EVP_des_ede(void)
|
2000-05-30 10:10:57 +08:00
|
|
|
{
|
|
|
|
return &des_ede_ecb;
|
|
|
|
}
|
|
|
|
|
2001-03-09 10:51:02 +08:00
|
|
|
const EVP_CIPHER *EVP_des_ede3(void)
|
2000-05-30 10:10:57 +08:00
|
|
|
{
|
|
|
|
return &des_ede3_ecb;
|
|
|
|
}
|
2013-07-17 21:05:19 +08:00
|
|
|
|
|
|
|
#ifndef OPENSSL_NO_SHA
|
|
|
|
|
|
|
|
#include <openssl/sha.h>
|
|
|
|
|
|
|
|
static const unsigned char wrap_iv[8] = {0x4a,0xdd,0xa2,0x2c,0x79,0xe8,0x21,0x05};
|
|
|
|
|
|
|
|
static int des_ede3_unwrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
|
|
const unsigned char *in, size_t inl)
|
|
|
|
{
|
|
|
|
unsigned char icv[8], iv[8], sha1tmp[SHA_DIGEST_LENGTH];
|
|
|
|
int rv = -1;
|
|
|
|
if (inl < 24)
|
|
|
|
return -1;
|
|
|
|
if (!out)
|
|
|
|
return inl - 16;
|
|
|
|
memcpy(ctx->iv, wrap_iv, 8);
|
|
|
|
/* Decrypt first block which will end up as icv */
|
|
|
|
des_ede_cbc_cipher(ctx, icv, in, 8);
|
|
|
|
/* Decrypt central blocks */
|
|
|
|
/* If decrypting in place move whole output along a block
|
|
|
|
* so the next des_ede_cbc_cipher is in place.
|
|
|
|
*/
|
|
|
|
if (out == in)
|
|
|
|
{
|
|
|
|
memmove(out, out + 8, inl - 8);
|
|
|
|
in -= 8;
|
|
|
|
}
|
|
|
|
des_ede_cbc_cipher(ctx, out, in + 8, inl - 16);
|
|
|
|
/* Decrypt final block which will be IV */
|
|
|
|
des_ede_cbc_cipher(ctx, iv, in + inl - 8, 8);
|
|
|
|
/* Reverse order of everything */
|
|
|
|
BUF_reverse(icv, NULL, 8);
|
|
|
|
BUF_reverse(out, NULL, inl - 16);
|
|
|
|
BUF_reverse(ctx->iv, iv, 8);
|
|
|
|
/* Decrypt again using new IV */
|
|
|
|
des_ede_cbc_cipher(ctx, out, out, inl - 16);
|
|
|
|
des_ede_cbc_cipher(ctx, icv, icv, 8);
|
|
|
|
/* Work out SHA1 hash of first portion */
|
|
|
|
SHA1(out, inl - 16, sha1tmp);
|
|
|
|
|
|
|
|
if (!CRYPTO_memcmp(sha1tmp, icv, 8))
|
|
|
|
rv = inl - 16;
|
|
|
|
OPENSSL_cleanse(icv, 8);
|
|
|
|
OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
|
|
|
|
OPENSSL_cleanse(iv, 8);
|
|
|
|
OPENSSL_cleanse(ctx->iv, 8);
|
|
|
|
if (rv == -1)
|
|
|
|
OPENSSL_cleanse(out, inl - 16);
|
|
|
|
|
|
|
|
return rv;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int des_ede3_wrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
|
|
const unsigned char *in, size_t inl)
|
|
|
|
{
|
|
|
|
unsigned char sha1tmp[SHA_DIGEST_LENGTH];
|
|
|
|
if (!out)
|
|
|
|
return inl + 16;
|
|
|
|
/* Copy input to output buffer + 8 so we have space for IV */
|
|
|
|
memmove(out + 8, in, inl);
|
|
|
|
/* Work out ICV */
|
|
|
|
SHA1(in, inl, sha1tmp);
|
|
|
|
memcpy(out + inl + 8, sha1tmp, 8);
|
|
|
|
OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
|
|
|
|
/* Generate random IV */
|
|
|
|
RAND_bytes(ctx->iv, 8);
|
|
|
|
memcpy(out, ctx->iv, 8);
|
|
|
|
/* Encrypt everything after IV in place */
|
|
|
|
des_ede_cbc_cipher(ctx, out + 8, out + 8, inl + 8);
|
|
|
|
BUF_reverse(out, NULL, inl + 16);
|
|
|
|
memcpy(ctx->iv, wrap_iv, 8);
|
|
|
|
des_ede_cbc_cipher(ctx, out, out, inl + 16);
|
|
|
|
return inl + 16;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int des_ede3_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
|
|
const unsigned char *in, size_t inl)
|
|
|
|
{
|
|
|
|
/* Sanity check input length: we typically only wrap keys
|
|
|
|
* so EVP_MAXCHUNK is more than will ever be needed. Also
|
|
|
|
* input length must be a multiple of 8 bits.
|
|
|
|
*/
|
|
|
|
if (inl >= EVP_MAXCHUNK || inl % 8)
|
|
|
|
return -1;
|
|
|
|
if (ctx->encrypt)
|
|
|
|
return des_ede3_wrap(ctx, out, in, inl);
|
|
|
|
else
|
|
|
|
return des_ede3_unwrap(ctx, out, in, inl);
|
|
|
|
}
|
|
|
|
|
|
|
|
static const EVP_CIPHER des3_wrap = {
|
|
|
|
NID_id_smime_alg_CMS3DESwrap,
|
|
|
|
8, 24, 0,
|
2013-08-05 22:40:50 +08:00
|
|
|
EVP_CIPH_WRAP_MODE|EVP_CIPH_CUSTOM_IV|EVP_CIPH_FLAG_CUSTOM_CIPHER
|
|
|
|
|EVP_CIPH_FLAG_DEFAULT_ASN1,
|
2013-07-17 21:05:19 +08:00
|
|
|
des_ede3_init_key, des_ede3_wrap_cipher,
|
|
|
|
NULL,
|
|
|
|
sizeof(DES_EDE_KEY),
|
|
|
|
NULL,NULL,NULL,NULL };
|
|
|
|
|
|
|
|
|
|
|
|
const EVP_CIPHER *EVP_des_ede3_wrap(void)
|
|
|
|
{
|
|
|
|
return &des3_wrap;
|
|
|
|
}
|
|
|
|
|
|
|
|
# endif
|
1999-04-27 12:18:53 +08:00
|
|
|
#endif
|