1f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org/* 2f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * SHA-1 in C 3f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * By Steve Reid <sreid@sea-to-sky.net> 4f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * 100% Public Domain 5f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * 6f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * ----------------- 7f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * Modified 7/98 8f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * By James H. Brown <jbrown@burgoyne.com> 9f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * Still 100% Public Domain 10f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * 11f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * Corrected a problem which generated improper hash values on 16 bit machines 12f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * Routine SHA1Update changed from 13f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * void SHA1Update(SHA1_CTX* context, unsigned char* data, unsigned int 14f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * len) 15f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * to 16f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * void SHA1Update(SHA1_CTX* context, unsigned char* data, unsigned 17f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * long len) 18f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * 19f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * The 'len' parameter was declared an int which works fine on 32 bit machines. 20f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * However, on 16 bit machines an int is too small for the shifts being done 21f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * against 22f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * it. This caused the hash function to generate incorrect values if len was 23f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * greater than 8191 (8K - 1) due to the 'len << 3' on line 3 of SHA1Update(). 24f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * 25f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * Since the file IO in main() reads 16K at a time, any file 8K or larger would 26f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * be guaranteed to generate the wrong hash (e.g. Test Vector #3, a million 27f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * "a"s). 28f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * 29f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * I also changed the declaration of variables i & j in SHA1Update to 30f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * unsigned long from unsigned int for the same reason. 31f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * 32f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * These changes should make no difference to any 32 bit implementations since 33f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * an 34f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * int and a long are the same size in those environments. 35f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * 36f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * -- 37f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * I also corrected a few compiler warnings generated by Borland C. 38f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * 1. Added #include <process.h> for exit() prototype 39f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * 2. Removed unused variable 'j' in SHA1Final 40f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * 3. Changed exit(0) to return(0) at end of main. 41f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * 42f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * ALL changes I made can be located by searching for comments containing 'JHB' 43f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * ----------------- 44f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * Modified 8/98 45f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * By Steve Reid <sreid@sea-to-sky.net> 46f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * Still 100% public domain 47f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * 48f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * 1- Removed #include <process.h> and used return() instead of exit() 49f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * 2- Fixed overwriting of finalcount in SHA1Final() (discovered by Chris Hall) 50f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * 3- Changed email address from steve@edmweb.com to sreid@sea-to-sky.net 51f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * 52f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * ----------------- 53f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * Modified 4/01 54f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * By Saul Kravitz <Saul.Kravitz@celera.com> 55f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * Still 100% PD 56f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * Modified to run on Compaq Alpha hardware. 57f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * 58f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * ----------------- 59f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * Modified 07/2002 60f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * By Ralph Giles <giles@ghostscript.com> 61f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * Still 100% public domain 62f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * modified for use with stdint types, autoconf 63f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * code cleanup, removed attribution comments 64f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * switched SHA1Final() argument order for consistency 65f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * use SHA1_ prefix for public api 66f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * move public api to sha1.h 67f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * 68f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * ----------------- 69f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * Modified 02/2012 70f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * By Justin Uberti <juberti@google.com> 71f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * Remove underscore from SHA1 prefix to avoid conflict with OpenSSL 72f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * Remove test code 73f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * Untabify 74f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * 75f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * ----------------- 76f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * Modified 03/2012 77f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * By Ronghua Wu <ronghuawu@google.com> 78f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * Change the typedef of uint32(8)_t to uint32(8). We need this because in the 79f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * chromium android build, the stdio.h will include stdint.h which already 80f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * defined uint32(8)_t. 81f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * 82f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * ----------------- 83f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * Modified 04/2012 84f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * By Frank Barchard <fbarchard@google.com> 85f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * Ported to C++, Google style, change len to size_t, enable SHA1HANDSOFF 86f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * 87f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * Test Vectors (from FIPS PUB 180-1) 88f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * "abc" 89f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * A9993E36 4706816A BA3E2571 7850C26C 9CD0D89D 90f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq" 91f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * 84983E44 1C3BD26E BAAE4AA1 F95129E5 E54670F1 92f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * A million repetitions of "a" 93f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org * 34AA973C D4C4DAA4 F61EEB2B DBAD2731 6534016F 948eb76ff32ae54ffeb6e3631f5d3584a372e59582Sergey Ulanov * 958eb76ff32ae54ffeb6e3631f5d3584a372e59582Sergey Ulanov * ----------------- 968eb76ff32ae54ffeb6e3631f5d3584a372e59582Sergey Ulanov * Modified 05/2015 978eb76ff32ae54ffeb6e3631f5d3584a372e59582Sergey Ulanov * By Sergey Ulanov <sergeyu@chromium.org> 988eb76ff32ae54ffeb6e3631f5d3584a372e59582Sergey Ulanov * Removed static buffer to make computation thread-safe. 990c4e06b4c6107a1b94f764e279e4fb4161e905b0Peter Boström * 1000c4e06b4c6107a1b94f764e279e4fb4161e905b0Peter Boström * ----------------- 1010c4e06b4c6107a1b94f764e279e4fb4161e905b0Peter Boström * Modified 10/2015 1020c4e06b4c6107a1b94f764e279e4fb4161e905b0Peter Boström * By Peter Boström <pbos@webrtc.org> 1030c4e06b4c6107a1b94f764e279e4fb4161e905b0Peter Boström * Change uint32(8) back to uint32(8)_t (undoes (03/2012) change). 104f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org */ 105f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org 106f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org// Enabling SHA1HANDSOFF preserves the caller's data buffer. 107f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org// Disabling SHA1HANDSOFF the buffer will be modified (end swapped). 108f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org#define SHA1HANDSOFF 109f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org 110f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org#include "webrtc/base/sha1.h" 111f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org 112f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org#include <stdio.h> 113f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org#include <string.h> 114f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org 115c50bf7cbd0483806c50a848d24349a79939e1161henrike@webrtc.orgnamespace rtc { 116c50bf7cbd0483806c50a848d24349a79939e1161henrike@webrtc.org 1179504b89ce29453a23bcc065eb2fc211f1762511fThiago Farinanamespace { 118f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org 119f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org#define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits)))) 120f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org 121f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org// blk0() and blk() perform the initial expand. 122f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org// I got the idea of expanding during the round function from SSLeay 123f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org// FIXME: can we do this in an endian-proof way? 12471df77bba01c86bc3bd359a61573698ea064f35fhenrikg#ifdef RTC_ARCH_CPU_BIG_ENDIAN 125f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org#define blk0(i) block->l[i] 126f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org#else 127f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org#define blk0(i) (block->l[i] = (rol(block->l[i], 24) & 0xFF00FF00) | \ 128f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org (rol(block->l[i], 8) & 0x00FF00FF)) 129f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org#endif 130f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org#define blk(i) (block->l[i & 15] = rol(block->l[(i + 13) & 15] ^ \ 131f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org block->l[(i + 8) & 15] ^ block->l[(i + 2) & 15] ^ block->l[i & 15], 1)) 132f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org 133f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org// (R0+R1), R2, R3, R4 are the different operations used in SHA1. 134f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org#define R0(v, w, x, y, z, i) \ 135f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org z += ((w & (x ^ y)) ^ y) + blk0(i) + 0x5A827999 + rol(v, 5); \ 136f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org w = rol(w, 30); 137f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org#define R1(v, w, x, y, z, i) \ 138f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org z += ((w & (x ^ y)) ^ y) + blk(i) + 0x5A827999 + rol(v, 5); \ 139f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org w = rol(w, 30); 140f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org#define R2(v, w, x, y, z, i) \ 141f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org z += (w ^ x ^ y) + blk(i) + 0x6ED9EBA1 + rol(v, 5);\ 142f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org w = rol(w, 30); 143f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org#define R3(v, w, x, y, z, i) \ 144f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org z += (((w | x) & y) | (w & x)) + blk(i) + 0x8F1BBCDC + rol(v, 5); \ 145f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org w = rol(w, 30); 146f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org#define R4(v, w, x, y, z, i) \ 147f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org z += (w ^ x ^ y) + blk(i) + 0xCA62C1D6 + rol(v, 5); \ 148f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org w = rol(w, 30); 149f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org 150f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org#ifdef VERBOSE // SAK 151f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.orgvoid SHAPrintContext(SHA1_CTX *context, char *msg) { 152f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org printf("%s (%d,%d) %x %x %x %x %x\n", 153f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org msg, 154f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org context->count[0], context->count[1], 155f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org context->state[0], 156f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org context->state[1], 157f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org context->state[2], 158f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org context->state[3], 159f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org context->state[4]); 160f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org} 161f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org#endif /* VERBOSE */ 162f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org 163f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org// Hash a single 512-bit block. This is the core of the algorithm. 1640c4e06b4c6107a1b94f764e279e4fb4161e905b0Peter Boströmvoid SHA1Transform(uint32_t state[5], const uint8_t buffer[64]) { 165f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org union CHAR64LONG16 { 1660c4e06b4c6107a1b94f764e279e4fb4161e905b0Peter Boström uint8_t c[64]; 1670c4e06b4c6107a1b94f764e279e4fb4161e905b0Peter Boström uint32_t l[16]; 168f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org }; 169f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org#ifdef SHA1HANDSOFF 1700c4e06b4c6107a1b94f764e279e4fb4161e905b0Peter Boström uint8_t workspace[64]; 171f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org memcpy(workspace, buffer, 64); 172f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org CHAR64LONG16* block = reinterpret_cast<CHAR64LONG16*>(workspace); 173f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org#else 174f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org // Note(fbarchard): This option does modify the user's data buffer. 175f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org CHAR64LONG16* block = const_cast<CHAR64LONG16*>( 176f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org reinterpret_cast<const CHAR64LONG16*>(buffer)); 177f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org#endif 178f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org 179f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org // Copy context->state[] to working vars. 1800c4e06b4c6107a1b94f764e279e4fb4161e905b0Peter Boström uint32_t a = state[0]; 1810c4e06b4c6107a1b94f764e279e4fb4161e905b0Peter Boström uint32_t b = state[1]; 1820c4e06b4c6107a1b94f764e279e4fb4161e905b0Peter Boström uint32_t c = state[2]; 1830c4e06b4c6107a1b94f764e279e4fb4161e905b0Peter Boström uint32_t d = state[3]; 1840c4e06b4c6107a1b94f764e279e4fb4161e905b0Peter Boström uint32_t e = state[4]; 185f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org 186f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org // 4 rounds of 20 operations each. Loop unrolled. 187f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org // Note(fbarchard): The following has lint warnings for multiple ; on 188f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org // a line and no space after , but is left as-is to be similar to the 189f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org // original code. 190f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org R0(a,b,c,d,e,0); R0(e,a,b,c,d,1); R0(d,e,a,b,c,2); R0(c,d,e,a,b,3); 191f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org R0(b,c,d,e,a,4); R0(a,b,c,d,e,5); R0(e,a,b,c,d,6); R0(d,e,a,b,c,7); 192f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org R0(c,d,e,a,b,8); R0(b,c,d,e,a,9); R0(a,b,c,d,e,10); R0(e,a,b,c,d,11); 193f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org R0(d,e,a,b,c,12); R0(c,d,e,a,b,13); R0(b,c,d,e,a,14); R0(a,b,c,d,e,15); 194f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org R1(e,a,b,c,d,16); R1(d,e,a,b,c,17); R1(c,d,e,a,b,18); R1(b,c,d,e,a,19); 195f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org R2(a,b,c,d,e,20); R2(e,a,b,c,d,21); R2(d,e,a,b,c,22); R2(c,d,e,a,b,23); 196f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org R2(b,c,d,e,a,24); R2(a,b,c,d,e,25); R2(e,a,b,c,d,26); R2(d,e,a,b,c,27); 197f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org R2(c,d,e,a,b,28); R2(b,c,d,e,a,29); R2(a,b,c,d,e,30); R2(e,a,b,c,d,31); 198f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org R2(d,e,a,b,c,32); R2(c,d,e,a,b,33); R2(b,c,d,e,a,34); R2(a,b,c,d,e,35); 199f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org R2(e,a,b,c,d,36); R2(d,e,a,b,c,37); R2(c,d,e,a,b,38); R2(b,c,d,e,a,39); 200f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org R3(a,b,c,d,e,40); R3(e,a,b,c,d,41); R3(d,e,a,b,c,42); R3(c,d,e,a,b,43); 201f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org R3(b,c,d,e,a,44); R3(a,b,c,d,e,45); R3(e,a,b,c,d,46); R3(d,e,a,b,c,47); 202f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org R3(c,d,e,a,b,48); R3(b,c,d,e,a,49); R3(a,b,c,d,e,50); R3(e,a,b,c,d,51); 203f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org R3(d,e,a,b,c,52); R3(c,d,e,a,b,53); R3(b,c,d,e,a,54); R3(a,b,c,d,e,55); 204f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org R3(e,a,b,c,d,56); R3(d,e,a,b,c,57); R3(c,d,e,a,b,58); R3(b,c,d,e,a,59); 205f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org R4(a,b,c,d,e,60); R4(e,a,b,c,d,61); R4(d,e,a,b,c,62); R4(c,d,e,a,b,63); 206f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org R4(b,c,d,e,a,64); R4(a,b,c,d,e,65); R4(e,a,b,c,d,66); R4(d,e,a,b,c,67); 207f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org R4(c,d,e,a,b,68); R4(b,c,d,e,a,69); R4(a,b,c,d,e,70); R4(e,a,b,c,d,71); 208f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org R4(d,e,a,b,c,72); R4(c,d,e,a,b,73); R4(b,c,d,e,a,74); R4(a,b,c,d,e,75); 209f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org R4(e,a,b,c,d,76); R4(d,e,a,b,c,77); R4(c,d,e,a,b,78); R4(b,c,d,e,a,79); 210f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org 211f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org // Add the working vars back into context.state[]. 212f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org state[0] += a; 213f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org state[1] += b; 214f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org state[2] += c; 215f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org state[3] += d; 216f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org state[4] += e; 217f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org} 218f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org 2199504b89ce29453a23bcc065eb2fc211f1762511fThiago Farina} // namespace 2209504b89ce29453a23bcc065eb2fc211f1762511fThiago Farina 221f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org// SHA1Init - Initialize new context. 222f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.orgvoid SHA1Init(SHA1_CTX* context) { 223f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org // SHA1 initialization constants. 224f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org context->state[0] = 0x67452301; 225f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org context->state[1] = 0xEFCDAB89; 226f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org context->state[2] = 0x98BADCFE; 227f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org context->state[3] = 0x10325476; 228f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org context->state[4] = 0xC3D2E1F0; 229f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org context->count[0] = context->count[1] = 0; 230f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org} 231f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org 232f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org// Run your data through this. 2330c4e06b4c6107a1b94f764e279e4fb4161e905b0Peter Boströmvoid SHA1Update(SHA1_CTX* context, const uint8_t* data, size_t input_len) { 234f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org size_t i = 0; 235f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org 236f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org#ifdef VERBOSE 237f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org SHAPrintContext(context, "before"); 238f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org#endif 239f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org 240f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org // Compute number of bytes mod 64. 241f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org size_t index = (context->count[0] >> 3) & 63; 242f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org 243f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org // Update number of bits. 2440c4e06b4c6107a1b94f764e279e4fb4161e905b0Peter Boström // TODO: Use uint64_t instead of 2 uint32_t for count. 245f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org // count[0] has low 29 bits for byte count + 3 pad 0's making 32 bits for 246f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org // bit count. 2470c4e06b4c6107a1b94f764e279e4fb4161e905b0Peter Boström // Add bit count to low uint32_t 2480c4e06b4c6107a1b94f764e279e4fb4161e905b0Peter Boström context->count[0] += static_cast<uint32_t>(input_len << 3); 2490c4e06b4c6107a1b94f764e279e4fb4161e905b0Peter Boström if (context->count[0] < static_cast<uint32_t>(input_len << 3)) { 250f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org ++context->count[1]; // if overlow (carry), add one to high word 251f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org } 2520c4e06b4c6107a1b94f764e279e4fb4161e905b0Peter Boström context->count[1] += static_cast<uint32_t>(input_len >> 29); 253f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org if ((index + input_len) > 63) { 254f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org i = 64 - index; 255f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org memcpy(&context->buffer[index], data, i); 256f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org SHA1Transform(context->state, context->buffer); 257f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org for (; i + 63 < input_len; i += 64) { 258f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org SHA1Transform(context->state, data + i); 259f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org } 260f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org index = 0; 261f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org } 262f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org memcpy(&context->buffer[index], &data[i], input_len - i); 263f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org 264f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org#ifdef VERBOSE 265f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org SHAPrintContext(context, "after "); 266f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org#endif 267f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org} 268f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org 269f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org// Add padding and return the message digest. 2700c4e06b4c6107a1b94f764e279e4fb4161e905b0Peter Boströmvoid SHA1Final(SHA1_CTX* context, uint8_t digest[SHA1_DIGEST_SIZE]) { 2710c4e06b4c6107a1b94f764e279e4fb4161e905b0Peter Boström uint8_t finalcount[8]; 272f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org for (int i = 0; i < 8; ++i) { 273f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org // Endian independent 2740c4e06b4c6107a1b94f764e279e4fb4161e905b0Peter Boström finalcount[i] = static_cast<uint8_t>( 2750c4e06b4c6107a1b94f764e279e4fb4161e905b0Peter Boström (context->count[(i >= 4 ? 0 : 1)] >> ((3 - (i & 3)) * 8)) & 255); 276f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org } 2770c4e06b4c6107a1b94f764e279e4fb4161e905b0Peter Boström SHA1Update(context, reinterpret_cast<const uint8_t*>("\200"), 1); 278f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org while ((context->count[0] & 504) != 448) { 2790c4e06b4c6107a1b94f764e279e4fb4161e905b0Peter Boström SHA1Update(context, reinterpret_cast<const uint8_t*>("\0"), 1); 280f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org } 281f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org SHA1Update(context, finalcount, 8); // Should cause a SHA1Transform(). 282f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org for (int i = 0; i < SHA1_DIGEST_SIZE; ++i) { 2830c4e06b4c6107a1b94f764e279e4fb4161e905b0Peter Boström digest[i] = static_cast<uint8_t>( 2840c4e06b4c6107a1b94f764e279e4fb4161e905b0Peter Boström (context->state[i >> 2] >> ((3 - (i & 3)) * 8)) & 255); 285f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org } 286f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org 287f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org // Wipe variables. 288f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org memset(context->buffer, 0, 64); 289f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org memset(context->state, 0, 20); 290f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org memset(context->count, 0, 8); 291f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org memset(finalcount, 0, 8); // SWR 292f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org 293f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org#ifdef SHA1HANDSOFF // Make SHA1Transform overwrite its own static vars. 294f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org SHA1Transform(context->state, context->buffer); 295f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org#endif 296f048872e915a3ee229044ec4bc541f6cbf9e4de1henrike@webrtc.org} 297c50bf7cbd0483806c50a848d24349a79939e1161henrike@webrtc.org 298c50bf7cbd0483806c50a848d24349a79939e1161henrike@webrtc.org} // namespace rtc 299