crypto/openssl-0.9.7e/crypto/evp/openbsd_hw.c

   1 /* Written by Ben Laurie, 2001 */
   2 /*
   3  * Copyright (c) 2001 The OpenSSL Project.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  *
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in
  14  *    the documentation and/or other materials provided with the
  15  *    distribution.
  16  *
  17  * 3. All advertising materials mentioning features or use of this
  18  *    software must display the following acknowledgment:
  19  *    "This product includes software developed by the OpenSSL Project
  20  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
  21  *
  22  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  23  *    endorse or promote products derived from this software without
  24  *    prior written permission. For written permission, please contact
  25  *    openssl-core@openssl.org.
  26  *
  27  * 5. Products derived from this software may not be called "OpenSSL"
  28  *    nor may "OpenSSL" appear in their names without prior written
  29  *    permission of the OpenSSL Project.
  30  *
  31  * 6. Redistributions of any form whatsoever must retain the following
  32  *    acknowledgment:
  33  *    "This product includes software developed by the OpenSSL Project
  34  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
  35  *
  36  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  37  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  38  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  39  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  40  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  41  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  42  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  43  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  44  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  45  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  46  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  47  * OF THE POSSIBILITY OF SUCH DAMAGE.
  48  */
  49
  50 #include <openssl/evp.h>
  51 #include <openssl/objects.h>
  52 #include <openssl/rsa.h>
  53 #include "evp_locl.h"
  54
  55 /* This stuff should now all be supported through
  56  * crypto/engine/hw_openbsd_dev_crypto.c unless I botched it up */
  57 static void *dummy=&dummy;
  58
  59 #if 0
  60
  61 /* check flag after OpenSSL headers to ensure make depend works */
  62 #ifdef OPENSSL_OPENBSD_DEV_CRYPTO
  63
  64 #include <fcntl.h>
  65 #include <stdio.h>
  66 #include <errno.h>
  67 #include <sys/ioctl.h>
  68 #include <crypto/cryptodev.h>
  69 #include <unistd.h>
  70 #include <assert.h>
  71
  72 /* longest key supported in hardware */
  73 #define MAX_HW_KEY      24
  74 #define MAX_HW_IV       8
  75
  76 #define MD5_DIGEST_LENGTH       16
  77 #define MD5_CBLOCK              64
  78
  79 static int fd;
  80 static int dev_failed;
  81
  82 typedef struct session_op session_op;
  83
  84 #define CDATA(ctx) EVP_C_DATA(session_op,ctx)
  85
  86 static void err(const char *str)
  87     {
  88     fprintf(stderr,"%s: errno %d\n",str,errno);
  89     }
  90
  91 static int dev_crypto_init(session_op *ses)
  92     {
  93     if(dev_failed)
  94         return 0;
  95     if(!fd)
  96         {
  97         int cryptodev_fd;
  98
  99         if ((cryptodev_fd=open("/dev/crypto",O_RDWR,0)) < 0)
 100             {
 101             err("/dev/crypto");
 102             dev_failed=1;
 103             return 0;
 104             }
 105         if (ioctl(cryptodev_fd,CRIOGET,&fd) == -1)
 106             {
 107             err("CRIOGET failed");
 108             close(cryptodev_fd);
 109             dev_failed=1;
 110             return 0;
 111             }
 112         close(cryptodev_fd);
 113         }
 114     assert(ses);
 115     memset(ses,'\0',sizeof *ses);
 116
 117     return 1;
 118     }
 119
 120 static int dev_crypto_cleanup(EVP_CIPHER_CTX *ctx)
 121     {
 122     if(ioctl(fd,CIOCFSESSION,&CDATA(ctx)->ses) == -1)
 123         err("CIOCFSESSION failed");
 124
 125     OPENSSL_free(CDATA(ctx)->key);
 126
 127     return 1;
 128     }
 129
 130 static int dev_crypto_init_key(EVP_CIPHER_CTX *ctx,int cipher,
 131                                const unsigned char *key,int klen)
 132     {
 133     if(!dev_crypto_init(CDATA(ctx)))
 134         return 0;
 135
 136     CDATA(ctx)->key=OPENSSL_malloc(MAX_HW_KEY);
 137
 138     assert(ctx->cipher->iv_len <= MAX_HW_IV);
 139
 140     memcpy(CDATA(ctx)->key,key,klen);
 141
 142     CDATA(ctx)->cipher=cipher;
 143     CDATA(ctx)->keylen=klen;
 144
 145     if (ioctl(fd,CIOCGSESSION,CDATA(ctx)) == -1)
 146         {
 147         err("CIOCGSESSION failed");
 148         return 0;
 149         }
 150     return 1;
 151     }
 152
 153 static int dev_crypto_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 154                              const unsigned char *in,unsigned int inl)
 155     {
 156     struct crypt_op cryp;
 157     unsigned char lb[MAX_HW_IV];
 158
 159     if(!inl)
 160         return 1;
 161
 162     assert(CDATA(ctx));
 163     assert(!dev_failed);
 164
 165     memset(&cryp,'\0',sizeof cryp);
 166     cryp.ses=CDATA(ctx)->ses;
 167     cryp.op=ctx->encrypt ? COP_ENCRYPT : COP_DECRYPT;
 168     cryp.flags=0;
 169     cryp.len=inl;
 170     assert((inl&(ctx->cipher->block_size-1)) == 0);
 171     cryp.src=(caddr_t)in;
 172     cryp.dst=(caddr_t)out;
 173     cryp.mac=0;
 174     if(ctx->cipher->iv_len)
 175         cryp.iv=(caddr_t)ctx->iv;
 176
 177     if(!ctx->encrypt)
 178         memcpy(lb,&in[cryp.len-ctx->cipher->iv_len],ctx->cipher->iv_len);
 179
 180     if(ioctl(fd, CIOCCRYPT, &cryp) == -1)
 181         {
 182         if(errno == EINVAL) /* buffers are misaligned */
 183             {
 184             unsigned int cinl=0;
 185             char *cin=NULL;
 186             char *cout=NULL;
 187
 188             /* NB: this can only make cinl != inl with stream ciphers */
 189             cinl=(inl+3)/4*4;
 190
 191             if(((unsigned long)in&3) || cinl != inl)
 192                 {
 193                 cin=OPENSSL_malloc(cinl);
 194                 memcpy(cin,in,inl);
 195                 cryp.src=cin;
 196                 }
 197
 198             if(((unsigned long)out&3) || cinl != inl)
 199                 {
 200                 cout=OPENSSL_malloc(cinl);
 201                 cryp.dst=cout;
 202                 }
 203
 204             cryp.len=cinl;
 205
 206             if(ioctl(fd, CIOCCRYPT, &cryp) == -1)
 207                 {
 208                 err("CIOCCRYPT(2) failed");
 209                 printf("src=%p dst=%p\n",cryp.src,cryp.dst);
 210                 abort();
 211                 return 0;
 212                 }
 213
 214             if(cout)
 215                 {
 216                 memcpy(out,cout,inl);
 217                 OPENSSL_free(cout);
 218                 }
 219             if(cin)
 220                 OPENSSL_free(cin);
 221             }
 222         else
 223             {
 224             err("CIOCCRYPT failed");
 225             abort();
 226             return 0;
 227             }
 228         }
 229
 230     if(ctx->encrypt)
 231         memcpy(ctx->iv,&out[cryp.len-ctx->cipher->iv_len],ctx->cipher->iv_len);
 232     else
 233         memcpy(ctx->iv,lb,ctx->cipher->iv_len);
 234
 235     return 1;
 236     }
 237
 238 static int dev_crypto_des_ede3_init_key(EVP_CIPHER_CTX *ctx,
 239                                         const unsigned char *key,
 240                                         const unsigned char *iv, int enc)
 241     { return dev_crypto_init_key(ctx,CRYPTO_3DES_CBC,key,24); }
 242
 243 #define dev_crypto_des_ede3_cbc_cipher dev_crypto_cipher
 244
 245 BLOCK_CIPHER_def_cbc(dev_crypto_des_ede3, session_op, NID_des_ede3, 8, 24, 8,
 246                      0, dev_crypto_des_ede3_init_key,
 247                      dev_crypto_cleanup,
 248                      EVP_CIPHER_set_asn1_iv,
 249                      EVP_CIPHER_get_asn1_iv,
 250                      NULL)
 251
 252 static int dev_crypto_rc4_init_key(EVP_CIPHER_CTX *ctx,
 253                                         const unsigned char *key,
 254                                         const unsigned char *iv, int enc)
 255     { return dev_crypto_init_key(ctx,CRYPTO_ARC4,key,16); }
 256
 257 static const EVP_CIPHER r4_cipher=
 258     {
 259     NID_rc4,
 260     1,16,0,     /* FIXME: key should be up to 256 bytes */
 261     EVP_CIPH_VARIABLE_LENGTH,
 262     dev_crypto_rc4_init_key,
 263     dev_crypto_cipher,
 264     dev_crypto_cleanup,
 265     sizeof(session_op),
 266     NULL,
 267     NULL,
 268     NULL
 269     };
 270
 271 const EVP_CIPHER *EVP_dev_crypto_rc4(void)
 272     { return &r4_cipher; }
 273
 274 typedef struct
 275     {
 276     session_op sess;
 277     char *data;
 278     int len;
 279     unsigned char md[EVP_MAX_MD_SIZE];
 280     } MD_DATA;
 281
 282 static int dev_crypto_init_digest(MD_DATA *md_data,int mac)
 283     {
 284     if(!dev_crypto_init(&md_data->sess))
 285         return 0;
 286
 287     md_data->len=0;
 288     md_data->data=NULL;
 289
 290     md_data->sess.mac=mac;
 291
 292     if (ioctl(fd,CIOCGSESSION,&md_data->sess) == -1)
 293         {
 294         err("CIOCGSESSION failed");
 295         return 0;
 296         }
 297     return 1;
 298     }
 299
 300 static int dev_crypto_cleanup_digest(MD_DATA *md_data)
 301     {
 302     if (ioctl(fd,CIOCFSESSION,&md_data->sess.ses) == -1)
 303         {
 304         err("CIOCFSESSION failed");
 305         return 0;
 306         }
 307
 308     return 1;
 309     }
 310
 311 /* FIXME: if device can do chained MACs, then don't accumulate */
 312 /* FIXME: move accumulation to the framework */
 313 static int dev_crypto_md5_init(EVP_MD_CTX *ctx)
 314     { return dev_crypto_init_digest(ctx->md_data,CRYPTO_MD5); }
 315
 316 static int do_digest(int ses,unsigned char *md,const void *data,int len)
 317     {
 318     struct crypt_op cryp;
 319     static unsigned char md5zero[16]=
 320         {
 321         0xd4,0x1d,0x8c,0xd9,0x8f,0x00,0xb2,0x04,
 322         0xe9,0x80,0x09,0x98,0xec,0xf8,0x42,0x7e
 323         };
 324
 325     /* some cards can't do zero length */
 326     if(!len)
 327         {
 328         memcpy(md,md5zero,16);
 329         return 1;
 330         }
 331
 332     memset(&cryp,'\0',sizeof cryp);
 333     cryp.ses=ses;
 334     cryp.op=COP_ENCRYPT;/* required to do the MAC rather than check it */
 335     cryp.len=len;
 336     cryp.src=(caddr_t)data;
 337     cryp.dst=(caddr_t)data; // FIXME!!!
 338     cryp.mac=(caddr_t)md;
 339
 340     if(ioctl(fd, CIOCCRYPT, &cryp) == -1)
 341         {
 342         if(errno == EINVAL) /* buffer is misaligned */
 343             {
 344             char *dcopy;
 345
 346             dcopy=OPENSSL_malloc(len);
 347             memcpy(dcopy,data,len);
 348             cryp.src=dcopy;
 349             cryp.dst=cryp.src; // FIXME!!!
 350
 351             if(ioctl(fd, CIOCCRYPT, &cryp) == -1)
 352                 {
 353                 err("CIOCCRYPT(MAC2) failed");
 354                 abort();
 355                 return 0;
 356                 }
 357             OPENSSL_free(dcopy);
 358             }
 359         else
 360             {
 361             err("CIOCCRYPT(MAC) failed");
 362             abort();
 363             return 0;
 364             }
 365         }
 366     //    printf("done\n");
 367
 368     return 1;
 369     }
 370
 371 static int dev_crypto_md5_update(EVP_MD_CTX *ctx,const void *data,
 372                                  unsigned long len)
 373     {
 374     MD_DATA *md_data=ctx->md_data;
 375
 376     if(ctx->flags&EVP_MD_CTX_FLAG_ONESHOT)
 377         return do_digest(md_data->sess.ses,md_data->md,data,len);
 378
 379     md_data->data=OPENSSL_realloc(md_data->data,md_data->len+len);
 380     memcpy(md_data->data+md_data->len,data,len);
 381     md_data->len+=len;
 382
 383     return 1;
 384     }
 385
 386 static int dev_crypto_md5_final(EVP_MD_CTX *ctx,unsigned char *md)
 387     {
 388     int ret;
 389     MD_DATA *md_data=ctx->md_data;
 390
 391     if(ctx->flags&EVP_MD_CTX_FLAG_ONESHOT)
 392         {
 393         memcpy(md,md_data->md,MD5_DIGEST_LENGTH);
 394         ret=1;
 395         }
 396     else
 397         {
 398         ret=do_digest(md_data->sess.ses,md,md_data->data,md_data->len);
 399         OPENSSL_free(md_data->data);
 400         md_data->data=NULL;
 401         md_data->len=0;
 402         }
 403
 404     return ret;
 405     }
 406
 407 static int dev_crypto_md5_copy(EVP_MD_CTX *to,const EVP_MD_CTX *from)
 408     {
 409     const MD_DATA *from_md=from->md_data;
 410     MD_DATA *to_md=to->md_data;
 411
 412     // How do we copy sessions?
 413     assert(from->digest->flags&EVP_MD_FLAG_ONESHOT);
 414
 415     to_md->data=OPENSSL_malloc(from_md->len);
 416     memcpy(to_md->data,from_md->data,from_md->len);
 417
 418     return 1;
 419     }
 420
 421 static int dev_crypto_md5_cleanup(EVP_MD_CTX *ctx)
 422     {
 423     return dev_crypto_cleanup_digest(ctx->md_data);
 424     }
 425
 426 static const EVP_MD md5_md=
 427     {
 428     NID_md5,
 429     NID_md5WithRSAEncryption,
 430     MD5_DIGEST_LENGTH,
 431     EVP_MD_FLAG_ONESHOT,        // XXX: set according to device info...
 432     dev_crypto_md5_init,
 433     dev_crypto_md5_update,
 434     dev_crypto_md5_final,
 435     dev_crypto_md5_copy,
 436     dev_crypto_md5_cleanup,
 437     EVP_PKEY_RSA_method,
 438     MD5_CBLOCK,
 439     sizeof(MD_DATA),
 440     };
 441
 442 const EVP_MD *EVP_dev_crypto_md5(void)
 443     { return &md5_md; }
 444
 445 #endif
 446 #endif