Home | History | Annotate | Download | only in mincrypt 
      1 /* sha.h
      2 **
      3 ** Copyright 2008, The Android Open Source Project
      4 **
      5 ** Redistribution and use in source and binary forms, with or without
      6 ** modification, are permitted provided that the following conditions are met:
      7 **     * Redistributions of source code must retain the above copyright
      8 **       notice, this list of conditions and the following disclaimer.
      9 **     * Redistributions in binary form must reproduce the above copyright
     10 **       notice, this list of conditions and the following disclaimer in the
     11 **       documentation and/or other materials provided with the distribution.
     12 **     * Neither the name of Google Inc. nor the names of its contributors may
     13 **       be used to endorse or promote products derived from this software
     14 **       without specific prior written permission.
     15 **
     16 ** THIS SOFTWARE IS PROVIDED BY Google Inc. ``AS IS'' AND ANY EXPRESS OR
     17 ** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     18 ** MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
     19 ** EVENT SHALL Google Inc. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     20 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     21 ** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     22 ** OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     23 ** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     24 ** OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     25 ** ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26 */
     27 
     28 #ifndef _EMBEDDED_SHA_H_
     29 #define _EMBEDDED_SHA_H_
     30 
     31 #include <inttypes.h>
     32 
     33 #ifdef __cplusplus
     34 extern "C" {
     35 #endif
     36 
     37 typedef struct SHA_CTX {
     38     uint64_t count;
     39     uint32_t state[5];
     40 #if defined(HAVE_ENDIAN_H) && defined(HAVE_LITTLE_ENDIAN)
     41     union {
     42         uint8_t b[64];
     43         uint32_t w[16];
     44     } buf;
     45 #else
     46     uint8_t buf[64];
     47 #endif
     48 } SHA_CTX;
     49 
     50 void SHA_init(SHA_CTX* ctx);
     51 void SHA_update(SHA_CTX* ctx, const void* data, int len);
     52 const uint8_t* SHA_final(SHA_CTX* ctx);
     53 
     54 /* Convenience method. Returns digest parameter value. */
     55 const uint8_t* SHA(const void* data, int len, uint8_t* digest);
     56 
     57 #define SHA_DIGEST_SIZE 20
     58 
     59 #ifdef __cplusplus
     60 }
     61 #endif
     62 
     63 #endif
     64