221 lines
6.1 KiB
C
221 lines
6.1 KiB
C
/* Written by Ben Laurie, 2001 */
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/*
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* Copyright (c) 2001 The OpenSSL Project. All rights reserved.
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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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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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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
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* openssl-core@openssl.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifdef OPENSSL_OPENBSD_DEV_CRYPTO
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#include <fcntl.h>
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#include <stdio.h>
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#include <errno.h>
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#include <sys/ioctl.h>
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#include <crypto/cryptodev.h>
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#include <unistd.h>
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#include <openssl/evp.h>
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#include <openssl/objects.h>
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#include "evp_locl.h"
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#include <assert.h>
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/* longest key supported in hardware */
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#define MAX_HW_KEY 24
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#define MAX_HW_IV 8
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static int fd;
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static int dev_failed;
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typedef struct session_op session_op;
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#define data(ctx) EVP_C_DATA(session_op,ctx)
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static void err(const char *str)
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{
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fprintf(stderr,"%s: errno %d\n",str,errno);
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}
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static int dev_crypto_init(EVP_CIPHER_CTX *ctx)
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{
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if(dev_failed)
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return 0;
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if(!fd)
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{
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int cryptodev_fd;
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if ((cryptodev_fd=open("/dev/crypto",O_RDWR,0)) < 0)
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{
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err("/dev/crypto");
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dev_failed=1;
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return 0;
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}
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if (ioctl(cryptodev_fd,CRIOGET,&fd) == -1)
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{
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err("CRIOGET failed");
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close(cryptodev_fd);
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dev_failed=1;
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return 0;
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}
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close(cryptodev_fd);
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}
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assert(data(ctx));
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memset(data(ctx),'\0',sizeof *data(ctx));
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data(ctx)->key=OPENSSL_malloc(MAX_HW_KEY);
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return 1;
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}
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static int dev_crypto_cleanup(EVP_CIPHER_CTX *ctx)
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{
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printf("Cleanup %d\n",data(ctx)->ses);
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if(ioctl(fd,CIOCFSESSION,&data(ctx)->ses) == -1)
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err("CIOCFSESSION failed");
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OPENSSL_free(data(ctx)->key);
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return 1;
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}
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/* FIXME: there should be some non-fatal way to report we fell back to s/w? */
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static int dev_crypto_init_key(EVP_CIPHER_CTX *ctx,int cipher,
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const unsigned char *key,int klen)
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{
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if(!dev_crypto_init(ctx))
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return 0;
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assert(ctx->cipher->iv_len <= MAX_HW_IV);
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memcpy(data(ctx)->key,key,klen);
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data(ctx)->cipher=cipher;
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data(ctx)->mac=0;
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data(ctx)->keylen=klen;
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if (ioctl(fd,CIOCGSESSION,data(ctx)) == -1)
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{
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err("CIOCGSESSION failed");
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return 0;
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}
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printf("Init %d\n",data(ctx)->ses);
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return 1;
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}
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static int dev_crypto_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
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const unsigned char *in,unsigned int inl)
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{
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struct crypt_op cryp;
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unsigned char lb[MAX_HW_IV];
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assert(data(ctx));
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assert(!dev_failed);
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memset(&cryp,'\0',sizeof cryp);
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cryp.ses=data(ctx)->ses;
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cryp.op=ctx->encrypt ? COP_ENCRYPT : COP_DECRYPT;
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cryp.flags=0;
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cryp.len=inl;
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assert((inl&ctx->cipher->block_size) == 0);
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cryp.src=(caddr_t)in;
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cryp.dst=(caddr_t)out;
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cryp.mac=0;
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if(ctx->cipher->iv_len)
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cryp.iv=(caddr_t)ctx->iv;
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if(!ctx->encrypt)
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memcpy(lb,&in[cryp.len-ctx->cipher->iv_len],ctx->cipher->iv_len);
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if (ioctl(fd, CIOCCRYPT, &cryp) == -1)
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{
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err("CIOCCRYPT failed");
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abort();
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return 0;
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}
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if(ctx->encrypt)
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memcpy(ctx->iv,&out[cryp.len-ctx->cipher->iv_len],ctx->cipher->iv_len);
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else
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memcpy(ctx->iv,lb,ctx->cipher->iv_len);
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return 1;
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}
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static int dev_crypto_des_ede3_init_key(EVP_CIPHER_CTX *ctx,
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const unsigned char *key,
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const unsigned char *iv, int enc)
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{ return dev_crypto_init_key(ctx,CRYPTO_3DES_CBC,key,24); }
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#define dev_crypto_des_ede3_cbc_cipher dev_crypto_cipher
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BLOCK_CIPHER_def_cbc(dev_crypto_des_ede3, session_op, NID_des_ede3, 8, 24, 8,
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0, dev_crypto_des_ede3_init_key,
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dev_crypto_cleanup,
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EVP_CIPHER_set_asn1_iv,
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EVP_CIPHER_get_asn1_iv,
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NULL)
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static int dev_crypto_rc4_init_key(EVP_CIPHER_CTX *ctx,
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const unsigned char *key,
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const unsigned char *iv, int enc)
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{ return dev_crypto_init_key(ctx,CRYPTO_ARC4,key,16); }
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static const EVP_CIPHER r4_cipher=
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{
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NID_rc4,
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1,16,0, /* FIXME: key should be up to 256 bytes */
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EVP_CIPH_VARIABLE_LENGTH,
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dev_crypto_rc4_init_key,
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dev_crypto_cipher,
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dev_crypto_cleanup,
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sizeof(session_op),
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NULL,
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NULL,
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NULL
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};
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const EVP_CIPHER *EVP_dev_crypto_rc4(void)
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{ return &r4_cipher; }
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#else
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static void *dummy=&dummy;
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#endif
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