-/* Written by Ben Laurie <ben@algroup.co.uk> August 2001 */
-/* ====================================================================
- * Copyright (c) 1999-2001 The OpenSSL Project. All rights reserved.
- *
- * 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 above 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 acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * licensing@OpenSSL.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- * nor may "OpenSSL" appear in their names without prior written
- * permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED 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 OpenSSL PROJECT OR
- * ITS 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.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com). This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
- *
- */
-
-#include <openssl/engine.h>
-#include <openssl/evp.h>
-#include "eng_int.h"
-/* Maybe this is needed? ... */
-#ifdef FLAT_INC
-#include "evp_locl.h"
-#else
-#include "../evp/evp_locl.h"
-#endif
-#include <openssl/conf.h>
-
-#ifndef OPENSSL_OPENBSD_DEV_CRYPTO
-
-void ENGINE_load_openbsd_dev_crypto(void)
- {
- /* This is a NOP unless OPENSSL_OPENBSD_DEV_CRYPTO is defined */
- return;
- }
-
-#else /* OPENSSL_OPENBSD_DEV_CRYPTO */
-
-#include <fcntl.h>
-#include <stdio.h>
-#include <errno.h>
-#include <assert.h>
-#include <unistd.h>
-#include <sys/ioctl.h>
-
-#include <crypto/cryptodev.h>
-
-/****************************************************/
-/* Declare the normal generic ENGINE stuff here ... */
-
-static int dev_crypto_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
- const int **nids, int nid);
-static int dev_crypto_digests(ENGINE *e, const EVP_MD **digest,
- const int **nids, int nid);
-
-static const char dev_crypto_id[] = "openbsd_dev_crypto";
-static const char dev_crypto_name[] = "OpenBSD /dev/crypto";
-
-static long allow_misaligned;
-
-#define DEV_CRYPTO_CMD_ALLOW_MISALIGNED ENGINE_CMD_BASE
-static const ENGINE_CMD_DEFN dev_crypto_cmd_defns[]=
- {
- { DEV_CRYPTO_CMD_ALLOW_MISALIGNED,
- "allow_misaligned",
- "Permit misaligned data to be used",
- ENGINE_CMD_FLAG_NUMERIC },
- { 0, NULL, NULL, 0 }
- };
-
-static int dev_crypto_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)())
- {
- switch(cmd)
- {
- case DEV_CRYPTO_CMD_ALLOW_MISALIGNED:
- allow_misaligned=i;
- printf("allow misaligned=%ld\n",allow_misaligned);
- break;
- }
-
- return 1;
- }
-
-static ENGINE *engine_openbsd_dev_crypto(void)
- {
- ENGINE *engine=ENGINE_new();
-
- if(!ENGINE_set_id(engine, dev_crypto_id) ||
- !ENGINE_set_name(engine, dev_crypto_name) ||
- !ENGINE_set_ciphers(engine, dev_crypto_ciphers) ||
- !ENGINE_set_digests(engine, dev_crypto_digests) ||
- !ENGINE_set_ctrl_function(engine, dev_crypto_ctrl) ||
- !ENGINE_set_cmd_defns(engine, dev_crypto_cmd_defns))
- {
- ENGINE_free(engine);
- return NULL;
- }
-
- return engine;
- }
-
-void ENGINE_load_openbsd_dev_crypto(void)
- {
- /* Copied from eng_[openssl|dyn].c */
- ENGINE *toadd = engine_openbsd_dev_crypto();
- if(!toadd) return;
- ENGINE_add(toadd);
- ENGINE_free(toadd);
- ERR_clear_error();
- }
-
-/******************************************************************************/
-/* Clip in the stuff from crypto/evp/openbsd_hw.c here. NB: What has changed? */
-/* I've removed the exposed EVP_*** functions, they're accessed through the */
-/* "dev_crypto_[ciphers|digests]" handlers. I've also moved the EVP_CIPHER */
-/* and EVP_MD structures to the bottom where they are close to the handlers */
-/* that expose them. What should be done? The global data (file-descriptors, */
-/* etc) should be put into ENGINE's ex_data support, and per-context data */
-/* (also file-descriptors perhaps) should be put into the contexts. Also code */
-/* formatting, fprintf statements, and OpenSSL-style error handling should be */
-/* added (dynamically, like the other ENGINEs). Also, "dynamic" support */
-/* be added to this ENGINE once it's up and running so that it could be built */
-/* as a shared-library. What else? device initialisation should take place */
-/* inside an ENGINE 'init()' handler (and likewise 'finish()'). ciphers and */
-/* digests won't be used by the framework unless the ENGINE has been */
-/* successfully initialised (that's one of the things you get for free) so */
-/* initialisation, including returning failure if device setup fails, can be */
-/* handled quite cleanly. This could presumably handle the opening (and then */
-/* closing inside 'finish()') of the 'cryptodev_fd' file-descriptor). */
-
-/* longest key supported in hardware */
-#define MAX_HW_KEY 24
-#define MAX_HW_IV 8
-
-#define MD5_DIGEST_LENGTH 16
-#define MD5_CBLOCK 64
-
-static int fd;
-static int dev_failed;
-
-typedef struct session_op session_op;
-
-#define CDATA(ctx) EVP_C_DATA(session_op,ctx)
-
-static void err(const char *str)
- {
- fprintf(stderr,"%s: errno %d\n",str,errno);
- }
-
-static int dev_crypto_init(session_op *ses)
- {
- if(dev_failed)
- return 0;
- if(!fd)
- {
- int cryptodev_fd;
-
- if ((cryptodev_fd=open("/dev/crypto",O_RDWR,0)) < 0)
- {
- err("/dev/crypto");
- dev_failed=1;
- return 0;
- }
- if (ioctl(cryptodev_fd,CRIOGET,&fd) == -1)
- {
- err("CRIOGET failed");
- close(cryptodev_fd);
- dev_failed=1;
- return 0;
- }
- close(cryptodev_fd);
- }
- assert(ses);
- memset(ses,'\0',sizeof *ses);
-
- return 1;
- }
-
-static int dev_crypto_cleanup(EVP_CIPHER_CTX *ctx)
- {
- fprintf(stderr,"cleanup %d\n",CDATA(ctx)->ses);
- if(ioctl(fd,CIOCFSESSION,&CDATA(ctx)->ses) == -1)
- err("CIOCFSESSION failed");
-
- OPENSSL_free(CDATA(ctx)->key);
-
- return 1;
- }
-
-static int dev_crypto_init_key(EVP_CIPHER_CTX *ctx,int cipher,
- const unsigned char *key,int klen)
- {
- if(!dev_crypto_init(CDATA(ctx)))
- return 0;
-
- CDATA(ctx)->key=OPENSSL_malloc(MAX_HW_KEY);
-
- assert(ctx->cipher->iv_len <= MAX_HW_IV);
-
- memcpy(CDATA(ctx)->key,key,klen);
-
- CDATA(ctx)->cipher=cipher;
- CDATA(ctx)->keylen=klen;
-
- if (ioctl(fd,CIOCGSESSION,CDATA(ctx)) == -1)
- {
- err("CIOCGSESSION failed");
- return 0;
- }
- return 1;
- }
-
-static int dev_crypto_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
- const unsigned char *in,unsigned int inl)
- {
- struct crypt_op cryp;
- unsigned char lb[MAX_HW_IV];
-
- if(!inl)
- return 1;
-
- assert(CDATA(ctx));
- assert(!dev_failed);
-
- memset(&cryp,'\0',sizeof cryp);
- cryp.ses=CDATA(ctx)->ses;
- cryp.op=ctx->encrypt ? COP_ENCRYPT : COP_DECRYPT;
- cryp.flags=0;
- cryp.len=inl;
- assert((inl&(ctx->cipher->block_size-1)) == 0);
- cryp.src=(caddr_t)in;
- cryp.dst=(caddr_t)out;
- cryp.mac=0;
- if(ctx->cipher->iv_len)
- cryp.iv=(caddr_t)ctx->iv;
-
- if(!ctx->encrypt)
- memcpy(lb,&in[cryp.len-ctx->cipher->iv_len],ctx->cipher->iv_len);
-
- if(ioctl(fd, CIOCCRYPT, &cryp) == -1)
- {
- if(errno == EINVAL) /* buffers are misaligned */
- {
- unsigned int cinl=0;
- char *cin=NULL;
- char *cout=NULL;
-
- /* NB: this can only make cinl != inl with stream ciphers */
- cinl=(inl+3)/4*4;
-
- if(((unsigned long)in&3) || cinl != inl)
- {
- cin=OPENSSL_malloc(cinl);
- memcpy(cin,in,inl);
- cryp.src=cin;
- }
-
- if(((unsigned long)out&3) || cinl != inl)
- {
- cout=OPENSSL_malloc(cinl);
- cryp.dst=cout;
- }
-
- cryp.len=cinl;
-
- if(ioctl(fd, CIOCCRYPT, &cryp) == -1)
- {
- err("CIOCCRYPT(2) failed");
- printf("src=%p dst=%p\n",cryp.src,cryp.dst);
- abort();
- return 0;
- }
-
- if(cout)
- {
- memcpy(out,cout,inl);
- OPENSSL_free(cout);
- }
- if(cin)
- OPENSSL_free(cin);
- }
- else
- {
- err("CIOCCRYPT failed");
- abort();
- return 0;
- }
- }
-
- if(ctx->encrypt)
- memcpy(ctx->iv,&out[cryp.len-ctx->cipher->iv_len],ctx->cipher->iv_len);
- else
- memcpy(ctx->iv,lb,ctx->cipher->iv_len);
-
- return 1;
- }
-
-static int dev_crypto_des_ede3_init_key(EVP_CIPHER_CTX *ctx,
- const unsigned char *key,
- const unsigned char *iv, int enc)
- { return dev_crypto_init_key(ctx,CRYPTO_3DES_CBC,key,24); }
-
-static int dev_crypto_rc4_init_key(EVP_CIPHER_CTX *ctx,
- const unsigned char *key,
- const unsigned char *iv, int enc)
- { return dev_crypto_init_key(ctx,CRYPTO_ARC4,key,16); }
-
-typedef struct
- {
- session_op sess;
- char *data;
- int len;
- unsigned char md[EVP_MAX_MD_SIZE];
- } MD_DATA;
-
-static int dev_crypto_init_digest(MD_DATA *md_data,int mac)
- {
- if(!dev_crypto_init(&md_data->sess))
- return 0;
-
- md_data->len=0;
- md_data->data=NULL;
-
- md_data->sess.mac=mac;
-
- if (ioctl(fd,CIOCGSESSION,&md_data->sess) == -1)
- {
- err("CIOCGSESSION failed");
- return 0;
- }
- fprintf(stderr,"opened %d\n",md_data->sess.ses);
- return 1;
- }
-
-static int dev_crypto_cleanup_digest(MD_DATA *md_data)
- {
- fprintf(stderr,"cleanup %d\n",md_data->sess.ses);
- if (ioctl(fd,CIOCFSESSION,&md_data->sess.ses) == -1)
- {
- err("CIOCFSESSION failed");
- return 0;
- }
-
- return 1;
- }
-
-/* FIXME: if device can do chained MACs, then don't accumulate */
-/* FIXME: move accumulation to the framework */
-static int dev_crypto_md5_init(EVP_MD_CTX *ctx)
- { return dev_crypto_init_digest(ctx->md_data,CRYPTO_MD5); }
-
-static int do_digest(int ses,unsigned char *md,const void *data,int len)
- {
- struct crypt_op cryp;
- static unsigned char md5zero[16]=
- {
- 0xd4,0x1d,0x8c,0xd9,0x8f,0x00,0xb2,0x04,
- 0xe9,0x80,0x09,0x98,0xec,0xf8,0x42,0x7e
- };
-
- /* some cards can't do zero length */
- if(!len)
- {
- memcpy(md,md5zero,16);
- return 1;
- }
-
- memset(&cryp,'\0',sizeof cryp);
- cryp.ses=ses;
- cryp.op=COP_ENCRYPT;/* required to do the MAC rather than check it */
- cryp.len=len;
- cryp.src=(caddr_t)data;
- cryp.dst=(caddr_t)data; /* FIXME!!! */
- cryp.mac=(caddr_t)md;
-
- if(ioctl(fd, CIOCCRYPT, &cryp) == -1)
- {
- if(errno == EINVAL && allow_misaligned) /* buffer is misaligned */
- {
- char *dcopy;
-
- dcopy=OPENSSL_malloc(len);
- memcpy(dcopy,data,len);
- cryp.src=dcopy;
- cryp.dst=cryp.src; /* FIXME!!! */
-
- if(ioctl(fd, CIOCCRYPT, &cryp) == -1)
- {
- err("CIOCCRYPT(MAC2) failed");
- abort();
- return 0;
- }
- OPENSSL_free(dcopy);
- }
- else
- {
- err("CIOCCRYPT(MAC) failed");
- abort();
- return 0;
- }
- }
- /* printf("done\n"); */
-
- return 1;
- }
-
-static int dev_crypto_md5_update(EVP_MD_CTX *ctx,const void *data,
- unsigned long len)
- {
- MD_DATA *md_data=ctx->md_data;
-
- if(ctx->flags&EVP_MD_CTX_FLAG_ONESHOT)
- return do_digest(md_data->sess.ses,md_data->md,data,len);
-
- md_data->data=OPENSSL_realloc(md_data->data,md_data->len+len);
- memcpy(md_data->data+md_data->len,data,len);
- md_data->len+=len;
-
- return 1;
- }
-
-static int dev_crypto_md5_final(EVP_MD_CTX *ctx,unsigned char *md)
- {
- int ret;
- MD_DATA *md_data=ctx->md_data;
-
- if(ctx->flags&EVP_MD_CTX_FLAG_ONESHOT)
- {
- memcpy(md,md_data->md,MD5_DIGEST_LENGTH);
- ret=1;
- }
- else
- {
- ret=do_digest(md_data->sess.ses,md,md_data->data,md_data->len);
- OPENSSL_free(md_data->data);
- md_data->data=NULL;
- md_data->len=0;
- }
-
- return ret;
- }
-
-static int dev_crypto_md5_copy(EVP_MD_CTX *to,const EVP_MD_CTX *from)
- {
- const MD_DATA *from_md=from->md_data;
- MD_DATA *to_md=to->md_data;
-
- /* How do we copy sessions? */
- assert(from->digest->flags&EVP_MD_FLAG_ONESHOT);
-
- to_md->data=OPENSSL_malloc(from_md->len);
- memcpy(to_md->data,from_md->data,from_md->len);
-
- return 1;
- }
-
-static int dev_crypto_md5_cleanup(EVP_MD_CTX *ctx)
- {
- return dev_crypto_cleanup_digest(ctx->md_data);
- }
-
-/**************************************************************************/
-/* Here are the moved declarations of the EVP_CIPHER and EVP_MD */
-/* implementations. They're down here to be within easy editor-distance */
-/* of the digests and ciphers handler functions. */
-
-#define dev_crypto_des_ede3_cbc_cipher dev_crypto_cipher
-
-BLOCK_CIPHER_def_cbc(dev_crypto_des_ede3, session_op, NID_des_ede3, 8, 24, 8,
- 0, dev_crypto_des_ede3_init_key,
- dev_crypto_cleanup,
- EVP_CIPHER_set_asn1_iv,
- EVP_CIPHER_get_asn1_iv,
- NULL)
-
-static const EVP_CIPHER r4_cipher=
- {
- NID_rc4,
- 1,16,0, /* FIXME: key should be up to 256 bytes */
- EVP_CIPH_VARIABLE_LENGTH,
- dev_crypto_rc4_init_key,
- dev_crypto_cipher,
- dev_crypto_cleanup,
- sizeof(session_op),
- NULL,
- NULL,
- NULL
- };
-
-static const EVP_MD md5_md=
- {
- NID_md5,
- NID_md5WithRSAEncryption,
- MD5_DIGEST_LENGTH,
- EVP_MD_FLAG_ONESHOT, /* XXX: set according to device info... */
- dev_crypto_md5_init,
- dev_crypto_md5_update,
- dev_crypto_md5_final,
- dev_crypto_md5_copy,
- dev_crypto_md5_cleanup,
- EVP_PKEY_RSA_method,
- MD5_CBLOCK,
- sizeof(MD_DATA),
- };
-
-/****************************************************************/
-/* Implement the dev_crypto_[ciphers|digests] handlers here ... */
-
-static int cipher_nids[] = {NID_des_ede3_cbc, NID_rc4};
-static int cipher_nids_num = 2;
-static int digest_nids[] = {NID_md5};
-static int digest_nids_num = 1;
-
-static int dev_crypto_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
- const int **nids, int nid)
- {
- if(!cipher)
- {
- /* We are returning a list of supported nids */
- *nids = cipher_nids;
- return cipher_nids_num;
- }
- /* We are being asked for a specific cipher */
- if(nid == NID_rc4)
- *cipher = &r4_cipher;
- else if(nid == NID_des_ede3_cbc)
- *cipher = &dev_crypto_des_ede3_cbc;
- else
- {
- *cipher = NULL;
- return 0;
- }
- return 1;
- }
-
-static int dev_crypto_digests(ENGINE *e, const EVP_MD **digest,
- const int **nids, int nid)
- {
- if(!digest)
- {
- /* We are returning a list of supported nids */
- *nids = digest_nids;
- return digest_nids_num;
- }
- /* We are being asked for a specific digest */
- if(nid == NID_md5)
- *digest = &md5_md;
- else
- {
- *digest = NULL;
- return 0;
- }
- return 1;
- }
-
-#endif /* OPENSSL_OPENBSD_DEV_CRYPTO */
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