/* 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_cipher BLOCK_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