5cc4a16511d6a2980e27a1225e2f90c72b5ea077 galt Wed Apr 26 14:19:28 2017 -0700 -Renaming sha1 to rSha1 etc to avoid silent name collision during linking. diff --git src/lib/sha1.c src/lib/sha1.c deleted file mode 100644 index 34e03dc..0000000 --- src/lib/sha1.c +++ /dev/null @@ -1,240 +0,0 @@ -/* SHA-1 in C -By Steve Reid -100% Public Domain -http://svn.ghostscript.com/jbig2dec/trunk/sha1.c -*/ -#define SHA1HANDSOFF /* Copies data before messing with it. */ - -#include -#include - -#include "common.h" -#include "hex.h" -#include "errAbort.h" -#include "sha1.h" - -void SHA1_Transform(bits32 state[5], const bits8 buffer[64]); - -#define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits)))) - -/* blk0() and blk() perform the initial expand. */ -/* I got the idea of expanding during the round function from SSLeay */ -/* FIXME: can we do this in an endian-proof way? */ -#ifdef WORDS_BIGENDIAN -#define blk0(i) block->l[i] -#else -#define blk0(i) (block->l[i] = (rol(block->l[i],24)&0xFF00FF00) \ - |(rol(block->l[i],8)&0x00FF00FF)) -#endif -#define blk(i) (block->l[i&15] = rol(block->l[(i+13)&15]^block->l[(i+8)&15] \ - ^block->l[(i+2)&15]^block->l[i&15],1)) - -/* (R0+R1), R2, R3, R4 are the different operations used in SHA1 */ -#define R0(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk0(i)+0x5A827999+rol(v,5);w=rol(w,30); -#define R1(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk(i)+0x5A827999+rol(v,5);w=rol(w,30); -#define R2(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0x6ED9EBA1+rol(v,5);w=rol(w,30); -#define R3(v,w,x,y,z,i) z+=(((w|x)&y)|(w&x))+blk(i)+0x8F1BBCDC+rol(v,5);w=rol(w,30); -#define R4(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0xCA62C1D6+rol(v,5);w=rol(w,30); - - -/* Hash a single 512-bit block. This is the core of the algorithm. */ -void SHA1_Transform(bits32 state[5], const bits8 buffer[64]) -{ - bits32 a, b, c, d, e; - typedef union { - bits8 c[64]; - bits32 l[16]; - } CHAR64LONG16; - CHAR64LONG16* block; - -#ifdef SHA1HANDSOFF - static bits8 workspace[64]; - block = (CHAR64LONG16*)workspace; - memcpy(block, buffer, 64); -#else - block = (CHAR64LONG16*)buffer; -#endif - - /* Copy context->state[] to working vars */ - a = state[0]; - b = state[1]; - c = state[2]; - d = state[3]; - e = state[4]; - - /* 4 rounds of 20 operations each. Loop unrolled. */ - 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); - 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); - 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); - 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); - 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); - 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); - 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); - 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); - 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); - 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); - 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); - 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); - 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); - 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); - 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); - 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); - 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); - 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); - 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); - 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); - - /* Add the working vars back into context.state[] */ - state[0] += a; - state[1] += b; - state[2] += c; - state[3] += d; - state[4] += e; - - /* Wipe variables */ - a = b = c = d = e = 0; -} - - -/* SHA1Init - Initialize new context */ -void SHA1_Init(SHA1_CTX* context) -{ - /* SHA1 initialization constants */ - context->state[0] = 0x67452301; - context->state[1] = 0xEFCDAB89; - context->state[2] = 0x98BADCFE; - context->state[3] = 0x10325476; - context->state[4] = 0xC3D2E1F0; - context->count[0] = context->count[1] = 0; -} - - -/* Run your data through this. */ -void SHA1_Update(SHA1_CTX* context, const bits8* data, const size_t len) -{ - size_t i, j; - - j = (context->count[0] >> 3) & 63; - if ((context->count[0] += len << 3) < (len << 3)) context->count[1]++; - context->count[1] += (len >> 29); - if ((j + len) > 63) { - memcpy(&context->buffer[j], data, (i = 64-j)); - SHA1_Transform(context->state, context->buffer); - for ( ; i + 63 < len; i += 64) { - SHA1_Transform(context->state, data + i); - } - j = 0; - } - else i = 0; - memcpy(&context->buffer[j], &data[i], len - i); - -} - - -/* Add padding and return the message digest. */ -void SHA1_Final(SHA1_CTX* context, bits8 digest[SHA1_DIGEST_SIZE]) -{ - bits32 i; - bits8 finalcount[8]; - - for (i = 0; i < 8; i++) { - finalcount[i] = (unsigned char)((context->count[(i >= 4 ? 0 : 1)] - >> ((3-(i & 3)) * 8) ) & 255); /* Endian independent */ - } - SHA1_Update(context, (bits8 *)"\200", 1); - while ((context->count[0] & 504) != 448) { - SHA1_Update(context, (bits8 *)"\0", 1); - } - SHA1_Update(context, finalcount, 8); /* Should cause a SHA1_Transform() */ - for (i = 0; i < SHA1_DIGEST_SIZE; i++) { - digest[i] = (bits8) - ((context->state[i>>2] >> ((3-(i & 3)) * 8) ) & 255); - } - - /* Wipe variables */ - i = 0; - memset(context->buffer, 0, 64); - memset(context->state, 0, 20); - memset(context->count, 0, 8); - memset(finalcount, 0, 8); /* SWR */ - -#ifdef SHA1HANDSOFF /* make SHA1Transform overwrite its own static vars */ - SHA1_Transform(context->state, context->buffer); -#endif -} - -/* ==================== Routines added by UCSC genome browser ========================= */ - - -char *sha1ToHex(unsigned char hash[20]) -/* Convert binary representation of sha1 to hex string. Do a freeMem on result when done. */ -{ -int hexSize = 20*2; -char hex[hexSize+1]; -char *h; -int i; -for (i = 0, h=hex; i < 20; ++i, h += 2) - byteToHex( hash[i], h); -hex[hexSize] = 0; -return cloneString(hex); -} - - -void sha1ForFile(char *fileName, unsigned char hash[20]) -/* Make sha1 hash from file */ -{ -FILE *fp = fopen (fileName, "r"); -if (!fp) errAbort("missing file %s", fileName); -#define BS 4096 /* match coreutils */ -SHA1_CTX ctx; -SHA1_Init(&ctx); -size_t nr; -unsigned char buf[BS]; -while ((nr=fread(buf, 1, sizeof(buf), fp))) - { - SHA1_Update(&ctx, buf, nr); - }; -SHA1_Final(&ctx, hash); -} - -char *sha1HexForFile(char *fileName) -/* Return Sha1 as Hex string */ -{ -unsigned char hash[20]; -sha1ForFile(fileName, hash); -return sha1ToHex(hash); -} - -void sha1ForBuf(char *buffer, size_t bufSize, unsigned char hash[20]) -/* Return sha1 hash of buffer. */ -{ -#define BS 4096 /* match coreutils */ -SHA1_CTX ctx; -SHA1_Init(&ctx); -size_t remaining = bufSize; -while (remaining > 0) - { - int bufSize = BS; - if (bufSize > remaining) - bufSize = remaining; - SHA1_Update(&ctx, (unsigned char*)buffer, bufSize); - buffer += bufSize; - remaining -= bufSize; - } -SHA1_Final(&ctx, hash); -} - -char *sha1HexForBuf(char *buf, size_t bufSize) -/* Return Sha1 as Hex string */ -{ -unsigned char hash[20]; -sha1ForBuf(buf, bufSize, hash); -return sha1ToHex(hash); -} - -char *sha1HexForString(char *string) -/* Return sha sum of zero-terminated string. */ -{ -return sha1HexForBuf(string, strlen(string)); -} -