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