/* * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. * * Licensed under the OpenSSL license (the "License"). You may not use * this file except in compliance with the License. You can obtain a copy * in the file LICENSE in the source distribution or at * https://www.openssl.org/source/license.html */ #include <stdio.h> #include "internal/cryptlib.h" #ifndef OPENSSL_NO_DES # include <openssl/evp.h> # include <openssl/objects.h> # include "internal/evp_int.h" # include <openssl/des.h> static int desx_cbc_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, const unsigned char *iv, int enc); static int desx_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl); typedef struct { DES_key_schedule ks; /* key schedule */ DES_cblock inw; DES_cblock outw; } DESX_CBC_KEY; # define data(ctx) EVP_C_DATA(DESX_CBC_KEY,ctx) static const EVP_CIPHER d_xcbc_cipher = { NID_desx_cbc, 8, 24, 8, EVP_CIPH_CBC_MODE, desx_cbc_init_key, desx_cbc_cipher, NULL, sizeof(DESX_CBC_KEY), EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, NULL, NULL }; const EVP_CIPHER *EVP_desx_cbc(void) { return &d_xcbc_cipher; } static int desx_cbc_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, const unsigned char *iv, int enc) { DES_cblock *deskey = (DES_cblock *)key; DES_set_key_unchecked(deskey, &data(ctx)->ks); memcpy(&data(ctx)->inw[0], &key[8], 8); memcpy(&data(ctx)->outw[0], &key[16], 8); return 1; } static int desx_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) { while (inl >= EVP_MAXCHUNK) { DES_xcbc_encrypt(in, out, (long)EVP_MAXCHUNK, &data(ctx)->ks, (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), &data(ctx)->inw, &data(ctx)->outw, EVP_CIPHER_CTX_encrypting(ctx)); inl -= EVP_MAXCHUNK; in += EVP_MAXCHUNK; out += EVP_MAXCHUNK; } if (inl) DES_xcbc_encrypt(in, out, (long)inl, &data(ctx)->ks, (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), &data(ctx)->inw, &data(ctx)->outw, EVP_CIPHER_CTX_encrypting(ctx)); return 1; } #endif