85 lines
2.1 KiB
C
85 lines
2.1 KiB
C
/*
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* Copyright (c) 2004 The OpenBSD project
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "includes.h"
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#include <openssl/evp.h>
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RCSID("$Id: cipher-acss.c,v 1.3 2005/07/17 07:04:47 djm Exp $");
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#if !defined(EVP_CTRL_SET_ACSS_MODE) && (OPENSSL_VERSION_NUMBER >= 0x00907000L)
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#include "acss.h"
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#define data(ctx) ((EVP_ACSS_KEY *)(ctx)->cipher_data)
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typedef struct {
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ACSS_KEY ks;
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} EVP_ACSS_KEY;
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#define EVP_CTRL_SET_ACSS_MODE 0xff06
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#define EVP_CTRL_SET_ACSS_SUBKEY 0xff07
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static int
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acss_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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acss_setkey(&data(ctx)->ks,key,enc,ACSS_DATA);
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return 1;
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}
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static int
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acss_ciph(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in,
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unsigned int inl)
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{
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acss(&data(ctx)->ks,inl,in,out);
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return 1;
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}
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static int
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acss_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
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{
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switch(type) {
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case EVP_CTRL_SET_ACSS_MODE:
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data(ctx)->ks.mode = arg;
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return 1;
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case EVP_CTRL_SET_ACSS_SUBKEY:
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acss_setsubkey(&data(ctx)->ks,(unsigned char *)ptr);
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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 *
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evp_acss(void)
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{
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static EVP_CIPHER acss_cipher;
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memset(&acss_cipher, 0, sizeof(EVP_CIPHER));
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acss_cipher.nid = NID_undef;
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acss_cipher.block_size = 1;
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acss_cipher.key_len = 5;
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acss_cipher.init = acss_init_key;
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acss_cipher.do_cipher = acss_ciph;
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acss_cipher.ctx_size = sizeof(EVP_ACSS_KEY);
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acss_cipher.ctrl = acss_ctrl;
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return (&acss_cipher);
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}
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#endif
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