sl@0: /* Written by Ben Laurie, 2001 */
sl@0: /*
sl@0:  * Copyright (c) 2001 The OpenSSL Project.  All rights reserved.
sl@0:  *
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  *
sl@0:  * 1. Redistributions of source code must retain the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer. 
sl@0:  *
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in
sl@0:  *    the documentation and/or other materials provided with the
sl@0:  *    distribution.
sl@0:  *
sl@0:  * 3. All advertising materials mentioning features or use of this
sl@0:  *    software must display the following acknowledgment:
sl@0:  *    "This product includes software developed by the OpenSSL Project
sl@0:  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
sl@0:  *
sl@0:  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
sl@0:  *    endorse or promote products derived from this software without
sl@0:  *    prior written permission. For written permission, please contact
sl@0:  *    openssl-core@openssl.org.
sl@0:  *
sl@0:  * 5. Products derived from this software may not be called "OpenSSL"
sl@0:  *    nor may "OpenSSL" appear in their names without prior written
sl@0:  *    permission of the OpenSSL Project.
sl@0:  *
sl@0:  * 6. Redistributions of any form whatsoever must retain the following
sl@0:  *    acknowledgment:
sl@0:  *    "This product includes software developed by the OpenSSL Project
sl@0:  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
sl@0:  *
sl@0:  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
sl@0:  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sl@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
sl@0:  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
sl@0:  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
sl@0:  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
sl@0:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
sl@0:  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
sl@0:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
sl@0:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
sl@0:  * OF THE POSSIBILITY OF SUCH DAMAGE.
sl@0:  */
sl@0: 
sl@0: #include <openssl/evp.h>
sl@0: #include <openssl/objects.h>
sl@0: #include <openssl/rsa.h>
sl@0: #include "evp_locl.h"
sl@0: 
sl@0: /* This stuff should now all be supported through
sl@0:  * crypto/engine/hw_openbsd_dev_crypto.c unless I botched it up */
sl@0: static void *dummy=&dummy;
sl@0: 
sl@0: #if 0
sl@0: 
sl@0: /* check flag after OpenSSL headers to ensure make depend works */
sl@0: #ifdef OPENSSL_OPENBSD_DEV_CRYPTO
sl@0: 
sl@0: #include <fcntl.h>
sl@0: #include <stdio.h>
sl@0: #include <errno.h>
sl@0: #include <sys/ioctl.h>
sl@0: #include <crypto/cryptodev.h>
sl@0: #include <unistd.h>
sl@0: #include <assert.h>
sl@0: 
sl@0: /* longest key supported in hardware */
sl@0: #define MAX_HW_KEY	24
sl@0: #define MAX_HW_IV	8
sl@0: 
sl@0: #define MD5_DIGEST_LENGTH	16
sl@0: #define MD5_CBLOCK		64
sl@0: 
sl@0: static int fd;
sl@0: static int dev_failed;
sl@0: 
sl@0: typedef struct session_op session_op;
sl@0: 
sl@0: #define CDATA(ctx) EVP_C_DATA(session_op,ctx)
sl@0: 
sl@0: static void err(const char *str)
sl@0:     {
sl@0:     fprintf(stderr,"%s: errno %d\n",str,errno);
sl@0:     }
sl@0: 
sl@0: static int dev_crypto_init(session_op *ses)
sl@0:     {
sl@0:     if(dev_failed)
sl@0: 	return 0;
sl@0:     if(!fd)
sl@0: 	{
sl@0: 	int cryptodev_fd;
sl@0: 
sl@0:         if ((cryptodev_fd=open("/dev/crypto",O_RDWR,0)) < 0)
sl@0: 	    {
sl@0: 	    err("/dev/crypto");
sl@0: 	    dev_failed=1;
sl@0: 	    return 0;
sl@0: 	    }
sl@0:         if (ioctl(cryptodev_fd,CRIOGET,&fd) == -1)
sl@0: 	    {
sl@0: 	    err("CRIOGET failed");
sl@0: 	    close(cryptodev_fd);
sl@0: 	    dev_failed=1;
sl@0: 	    return 0;
sl@0: 	    }
sl@0: 	close(cryptodev_fd);
sl@0: 	}
sl@0:     assert(ses);
sl@0:     memset(ses,'\0',sizeof *ses);
sl@0: 
sl@0:     return 1;
sl@0:     }
sl@0: 
sl@0: static int dev_crypto_cleanup(EVP_CIPHER_CTX *ctx)
sl@0:     {
sl@0:     if(ioctl(fd,CIOCFSESSION,&CDATA(ctx)->ses) == -1)
sl@0: 	err("CIOCFSESSION failed");
sl@0: 
sl@0:     OPENSSL_free(CDATA(ctx)->key);
sl@0: 
sl@0:     return 1;
sl@0:     }
sl@0: 
sl@0: static int dev_crypto_init_key(EVP_CIPHER_CTX *ctx,int cipher,
sl@0: 			       const unsigned char *key,int klen)
sl@0:     {
sl@0:     if(!dev_crypto_init(CDATA(ctx)))
sl@0: 	return 0;
sl@0: 
sl@0:     CDATA(ctx)->key=OPENSSL_malloc(MAX_HW_KEY);
sl@0: 
sl@0:     assert(ctx->cipher->iv_len <= MAX_HW_IV);
sl@0: 
sl@0:     memcpy(CDATA(ctx)->key,key,klen);
sl@0:     
sl@0:     CDATA(ctx)->cipher=cipher;
sl@0:     CDATA(ctx)->keylen=klen;
sl@0: 
sl@0:     if (ioctl(fd,CIOCGSESSION,CDATA(ctx)) == -1)
sl@0: 	{
sl@0: 	err("CIOCGSESSION failed");
sl@0: 	return 0;
sl@0: 	}
sl@0:     return 1;
sl@0:     }
sl@0: 
sl@0: static int dev_crypto_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
sl@0: 			     const unsigned char *in,unsigned int inl)
sl@0:     {
sl@0:     struct crypt_op cryp;
sl@0:     unsigned char lb[MAX_HW_IV];
sl@0: 
sl@0:     if(!inl)
sl@0: 	return 1;
sl@0: 
sl@0:     assert(CDATA(ctx));
sl@0:     assert(!dev_failed);
sl@0: 
sl@0:     memset(&cryp,'\0',sizeof cryp);
sl@0:     cryp.ses=CDATA(ctx)->ses;
sl@0:     cryp.op=ctx->encrypt ? COP_ENCRYPT : COP_DECRYPT;
sl@0:     cryp.flags=0;
sl@0:     cryp.len=inl;
sl@0:     assert((inl&(ctx->cipher->block_size-1)) == 0);
sl@0:     cryp.src=(caddr_t)in;
sl@0:     cryp.dst=(caddr_t)out;
sl@0:     cryp.mac=0;
sl@0:     if(ctx->cipher->iv_len)
sl@0: 	cryp.iv=(caddr_t)ctx->iv;
sl@0: 
sl@0:     if(!ctx->encrypt)
sl@0: 	memcpy(lb,&in[cryp.len-ctx->cipher->iv_len],ctx->cipher->iv_len);
sl@0: 
sl@0:     if(ioctl(fd, CIOCCRYPT, &cryp) == -1)
sl@0: 	{
sl@0: 	if(errno == EINVAL) /* buffers are misaligned */
sl@0: 	    {
sl@0: 	    unsigned int cinl=0;
sl@0: 	    char *cin=NULL;
sl@0: 	    char *cout=NULL;
sl@0: 
sl@0: 	    /* NB: this can only make cinl != inl with stream ciphers */
sl@0: 	    cinl=(inl+3)/4*4;
sl@0: 
sl@0: 	    if(((unsigned long)in&3) || cinl != inl)
sl@0: 		{
sl@0: 		cin=OPENSSL_malloc(cinl);
sl@0: 		memcpy(cin,in,inl);
sl@0: 		cryp.src=cin;
sl@0: 		}
sl@0: 
sl@0: 	    if(((unsigned long)out&3) || cinl != inl)
sl@0: 		{
sl@0: 		cout=OPENSSL_malloc(cinl);
sl@0: 		cryp.dst=cout;
sl@0: 		}
sl@0: 
sl@0: 	    cryp.len=cinl;
sl@0: 
sl@0: 	    if(ioctl(fd, CIOCCRYPT, &cryp) == -1)
sl@0: 		{
sl@0: 		err("CIOCCRYPT(2) failed");
sl@0: 		printf("src=%p dst=%p\n",cryp.src,cryp.dst);
sl@0: 		abort();
sl@0: 		return 0;
sl@0: 		}
sl@0: 		
sl@0: 	    if(cout)
sl@0: 		{
sl@0: 		memcpy(out,cout,inl);
sl@0: 		OPENSSL_free(cout);
sl@0: 		}
sl@0: 	    if(cin)
sl@0: 		OPENSSL_free(cin);
sl@0: 	    }
sl@0: 	else 
sl@0: 	    {	    
sl@0: 	    err("CIOCCRYPT failed");
sl@0: 	    abort();
sl@0: 	    return 0;
sl@0: 	    }
sl@0: 	}
sl@0: 
sl@0:     if(ctx->encrypt)
sl@0: 	memcpy(ctx->iv,&out[cryp.len-ctx->cipher->iv_len],ctx->cipher->iv_len);
sl@0:     else
sl@0: 	memcpy(ctx->iv,lb,ctx->cipher->iv_len);
sl@0: 
sl@0:     return 1;
sl@0:     }
sl@0: 
sl@0: static int dev_crypto_des_ede3_init_key(EVP_CIPHER_CTX *ctx,
sl@0: 					const unsigned char *key,
sl@0: 					const unsigned char *iv, int enc)
sl@0:     { return dev_crypto_init_key(ctx,CRYPTO_3DES_CBC,key,24); }
sl@0: 
sl@0: #define dev_crypto_des_ede3_cbc_cipher dev_crypto_cipher
sl@0: 
sl@0: BLOCK_CIPHER_def_cbc(dev_crypto_des_ede3, session_op, NID_des_ede3, 8, 24, 8,
sl@0: 		     0, dev_crypto_des_ede3_init_key,
sl@0: 		     dev_crypto_cleanup, 
sl@0: 		     EVP_CIPHER_set_asn1_iv,
sl@0: 		     EVP_CIPHER_get_asn1_iv,
sl@0: 		     NULL)
sl@0: 
sl@0: static int dev_crypto_rc4_init_key(EVP_CIPHER_CTX *ctx,
sl@0: 					const unsigned char *key,
sl@0: 					const unsigned char *iv, int enc)
sl@0:     { return dev_crypto_init_key(ctx,CRYPTO_ARC4,key,16); }
sl@0: 
sl@0: static const EVP_CIPHER r4_cipher=
sl@0:     {
sl@0:     NID_rc4,
sl@0:     1,16,0,	/* FIXME: key should be up to 256 bytes */
sl@0:     EVP_CIPH_VARIABLE_LENGTH,
sl@0:     dev_crypto_rc4_init_key,
sl@0:     dev_crypto_cipher,
sl@0:     dev_crypto_cleanup,
sl@0:     sizeof(session_op),
sl@0:     NULL,
sl@0:     NULL,
sl@0:     NULL
sl@0:     };
sl@0: 
sl@0: const EVP_CIPHER *EVP_dev_crypto_rc4(void)
sl@0:     { return &r4_cipher; }
sl@0: 
sl@0: typedef struct
sl@0:     {
sl@0:     session_op sess;
sl@0:     char *data;
sl@0:     int len;
sl@0:     unsigned char md[EVP_MAX_MD_SIZE];
sl@0:     } MD_DATA;
sl@0: 
sl@0: static int dev_crypto_init_digest(MD_DATA *md_data,int mac)
sl@0:     {
sl@0:     if(!dev_crypto_init(&md_data->sess))
sl@0: 	return 0;
sl@0: 
sl@0:     md_data->len=0;
sl@0:     md_data->data=NULL;
sl@0: 
sl@0:     md_data->sess.mac=mac;
sl@0: 
sl@0:     if (ioctl(fd,CIOCGSESSION,&md_data->sess) == -1)
sl@0: 	{
sl@0: 	err("CIOCGSESSION failed");
sl@0: 	return 0;
sl@0: 	}
sl@0:     return 1;
sl@0:     }
sl@0: 
sl@0: static int dev_crypto_cleanup_digest(MD_DATA *md_data)
sl@0:     {
sl@0:     if (ioctl(fd,CIOCFSESSION,&md_data->sess.ses) == -1)
sl@0: 	{
sl@0: 	err("CIOCFSESSION failed");
sl@0: 	return 0;
sl@0: 	}
sl@0: 
sl@0:     return 1;
sl@0:     }
sl@0: 
sl@0: /* FIXME: if device can do chained MACs, then don't accumulate */
sl@0: /* FIXME: move accumulation to the framework */
sl@0: static int dev_crypto_md5_init(EVP_MD_CTX *ctx)
sl@0:     { return dev_crypto_init_digest(ctx->md_data,CRYPTO_MD5); }
sl@0: 
sl@0: static int do_digest(int ses,unsigned char *md,const void *data,int len)
sl@0:     {
sl@0:     struct crypt_op cryp;
sl@0:     static unsigned char md5zero[16]=
sl@0: 	{
sl@0: 	0xd4,0x1d,0x8c,0xd9,0x8f,0x00,0xb2,0x04,
sl@0: 	0xe9,0x80,0x09,0x98,0xec,0xf8,0x42,0x7e
sl@0: 	};
sl@0: 
sl@0:     /* some cards can't do zero length */
sl@0:     if(!len)
sl@0: 	{
sl@0: 	memcpy(md,md5zero,16);
sl@0: 	return 1;
sl@0: 	}
sl@0: 
sl@0:     memset(&cryp,'\0',sizeof cryp);
sl@0:     cryp.ses=ses;
sl@0:     cryp.op=COP_ENCRYPT;/* required to do the MAC rather than check it */
sl@0:     cryp.len=len;
sl@0:     cryp.src=(caddr_t)data;
sl@0:     cryp.dst=(caddr_t)data; // FIXME!!!
sl@0:     cryp.mac=(caddr_t)md;
sl@0: 
sl@0:     if(ioctl(fd, CIOCCRYPT, &cryp) == -1)
sl@0: 	{
sl@0: 	if(errno == EINVAL) /* buffer is misaligned */
sl@0: 	    {
sl@0: 	    char *dcopy;
sl@0: 
sl@0: 	    dcopy=OPENSSL_malloc(len);
sl@0: 	    memcpy(dcopy,data,len);
sl@0: 	    cryp.src=dcopy;
sl@0: 	    cryp.dst=cryp.src; // FIXME!!!
sl@0: 
sl@0: 	    if(ioctl(fd, CIOCCRYPT, &cryp) == -1)
sl@0: 		{
sl@0: 		err("CIOCCRYPT(MAC2) failed");
sl@0: 		abort();
sl@0: 		return 0;
sl@0: 		}
sl@0: 	    OPENSSL_free(dcopy);
sl@0: 	    }
sl@0: 	else
sl@0: 	    {
sl@0: 	    err("CIOCCRYPT(MAC) failed");
sl@0: 	    abort();
sl@0: 	    return 0;
sl@0: 	    }
sl@0: 	}
sl@0:     //    printf("done\n");
sl@0: 
sl@0:     return 1;
sl@0:     }
sl@0: 
sl@0: static int dev_crypto_md5_update(EVP_MD_CTX *ctx,const void *data,
sl@0: 				 unsigned long len)
sl@0:     {
sl@0:     MD_DATA *md_data=ctx->md_data;
sl@0: 
sl@0:     if(ctx->flags&EVP_MD_CTX_FLAG_ONESHOT)
sl@0: 	return do_digest(md_data->sess.ses,md_data->md,data,len);
sl@0: 
sl@0:     md_data->data=OPENSSL_realloc(md_data->data,md_data->len+len);
sl@0:     memcpy(md_data->data+md_data->len,data,len);
sl@0:     md_data->len+=len;
sl@0: 
sl@0:     return 1;
sl@0:     }	
sl@0: 
sl@0: static int dev_crypto_md5_final(EVP_MD_CTX *ctx,unsigned char *md)
sl@0:     {
sl@0:     int ret;
sl@0:     MD_DATA *md_data=ctx->md_data;
sl@0: 
sl@0:     if(ctx->flags&EVP_MD_CTX_FLAG_ONESHOT)
sl@0: 	{
sl@0: 	memcpy(md,md_data->md,MD5_DIGEST_LENGTH);
sl@0: 	ret=1;
sl@0: 	}
sl@0:     else
sl@0: 	{
sl@0: 	ret=do_digest(md_data->sess.ses,md,md_data->data,md_data->len);
sl@0: 	OPENSSL_free(md_data->data);
sl@0: 	md_data->data=NULL;
sl@0: 	md_data->len=0;
sl@0: 	}
sl@0: 
sl@0:     return ret;
sl@0:     }
sl@0: 
sl@0: static int dev_crypto_md5_copy(EVP_MD_CTX *to,const EVP_MD_CTX *from)
sl@0:     {
sl@0:     const MD_DATA *from_md=from->md_data;
sl@0:     MD_DATA *to_md=to->md_data;
sl@0: 
sl@0:     // How do we copy sessions?
sl@0:     assert(from->digest->flags&EVP_MD_FLAG_ONESHOT);
sl@0: 
sl@0:     to_md->data=OPENSSL_malloc(from_md->len);
sl@0:     memcpy(to_md->data,from_md->data,from_md->len);
sl@0: 
sl@0:     return 1;
sl@0:     }
sl@0: 
sl@0: static int dev_crypto_md5_cleanup(EVP_MD_CTX *ctx)
sl@0:     {
sl@0:     return dev_crypto_cleanup_digest(ctx->md_data);
sl@0:     }
sl@0: 
sl@0: static const EVP_MD md5_md=
sl@0:     {
sl@0:     NID_md5,
sl@0:     NID_md5WithRSAEncryption,
sl@0:     MD5_DIGEST_LENGTH,
sl@0:     EVP_MD_FLAG_ONESHOT,	// XXX: set according to device info...
sl@0:     dev_crypto_md5_init,
sl@0:     dev_crypto_md5_update,
sl@0:     dev_crypto_md5_final,
sl@0:     dev_crypto_md5_copy,
sl@0:     dev_crypto_md5_cleanup,
sl@0:     EVP_PKEY_RSA_method,
sl@0:     MD5_CBLOCK,
sl@0:     sizeof(MD_DATA),
sl@0:     };
sl@0: 
sl@0: const EVP_MD *EVP_dev_crypto_md5(void)
sl@0:     { return &md5_md; }
sl@0: 
sl@0: #endif
sl@0: #endif