/* 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, unsigned int 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, unsigned int 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, unsigned int inl){#ifdef KSSL_DEBUG	{        int i;	printf("des_ede_cbc_cipher(ctx=%lx, buflen=%d)\n", (unsigned long)ctx, ctx->buf_len);	printf("\t iv= ");        for(i=0;i<8;i++)                printf("%02X",ctx->iv[i]);	printf("\n");	}#endif    /* KSSL_DEBUG */	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, unsigned int 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, unsigned int inl)    {    unsigned int 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 >> (n%8)))|((d[0]&0x80) >> (n%8));	}    return 1;    }static int des_ede3_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,				const unsigned char *in, unsigned int inl)    {    DES_ede3_cfb_encrypt(in,out,8,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|EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_DEFAULT_ASN1,			des_ede_init_key,			NULL, NULL, NULL,			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_cipherBLOCK_CIPHER_defs(des_ede3, DES_EDE_KEY, NID_des_ede3, 8, 24, 8, 64,		EVP_CIPH_RAND_KEY|EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_DEFAULT_ASN1,			des_ede3_init_key,			NULL, NULL, NULL,			des3_ctrl)BLOCK_CIPHER_def_cfb(des_ede3,DES_EDE_KEY,NID_des_ede3,24,8,1,		EVP_CIPH_RAND_KEY|EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_DEFAULT_ASN1,		     des_ede3_init_key,		     NULL, NULL, NULL,		     des3_ctrl)BLOCK_CIPHER_def_cfb(des_ede3,DES_EDE_KEY,NID_des_ede3,24,8,8,		EVP_CIPH_RAND_KEY|EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_DEFAULT_ASN1,		     des_ede3_init_key,		     NULL, NULL, NULL,		     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", (unsigned long)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