2010-08-23 19:10:28 -05:00
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//
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// MGMSHA1.m
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// MGMMD
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//
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// Created by Mr. Gecko <GRMrGecko@gmail.com> on 8/23/10.
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// No Copyright Claimed. Public Domain.
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// C Algorithm created by Steve Reid <steve@edmweb.com>
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//
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#ifdef __NEXT_RUNTIME__
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#import "MGMSHA1.h"
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2011-04-18 08:45:25 -05:00
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#import "MGMTypes.h"
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2010-08-23 19:10:28 -05:00
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NSString * const MDNSHA1 = @"sha1";
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@implementation NSString (MGMSHA1)
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- (NSString *)SHA1 {
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NSData *MDData = [self dataUsingEncoding:NSUTF8StringEncoding];
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struct SHA1Context MDContext;
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unsigned char MDDigest[SHA1Length];
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SHA1Init(&MDContext);
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SHA1Update(&MDContext, [MDData bytes], [MDData length]);
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SHA1Final(MDDigest, &MDContext);
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char *stringBuffer = (char *)malloc(SHA1Length * 2 + 1);
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char *hexBuffer = stringBuffer;
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for (int i=0; i<SHA1Length; i++) {
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*hexBuffer++ = hexdigits[(MDDigest[i] >> 4) & 0xF];
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*hexBuffer++ = hexdigits[MDDigest[i] & 0xF];
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}
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*hexBuffer = '\0';
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NSString *hash = [NSString stringWithUTF8String:stringBuffer];
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free(stringBuffer);
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return hash;
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}
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- (NSString *)pathSHA1 {
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NSFileHandle *file = [NSFileHandle fileHandleForReadingAtPath:self];
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if (file==nil)
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return nil;
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struct SHA1Context MDContext;
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unsigned char MDDigest[SHA1Length];
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SHA1Init(&MDContext);
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int length;
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do {
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NSAutoreleasePool *pool = [NSAutoreleasePool new];
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NSData *MDData = [file readDataOfLength:MDFileReadLength];
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length = [MDData length];
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SHA1Update(&MDContext, [MDData bytes], length);
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[pool release];
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} while (length>0);
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SHA1Final(MDDigest, &MDContext);
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char *stringBuffer = (char *)malloc(SHA1Length * 2 + 1);
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char *hexBuffer = stringBuffer;
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for (int i=0; i<SHA1Length; i++) {
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*hexBuffer++ = hexdigits[(MDDigest[i] >> 4) & 0xF];
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*hexBuffer++ = hexdigits[MDDigest[i] & 0xF];
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}
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*hexBuffer = '\0';
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NSString *hash = [NSString stringWithUTF8String:stringBuffer];
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free(stringBuffer);
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return hash;
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}
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@end
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#else
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#include <stdio.h>
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#include <string.h>
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#include "MGMMD5.h"
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2011-04-18 08:45:25 -05:00
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#include "MGMTypes.h"
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2010-08-23 19:10:28 -05:00
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#endif
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char *SHA1String(const char *string, int length) {
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struct SHA1Context MDContext;
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unsigned char MDDigest[SHA1Length];
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SHA1Init(&MDContext);
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SHA1Update(&MDContext, (const unsigned char *)string, length);
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SHA1Final(MDDigest, &MDContext);
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char *stringBuffer = (char *)malloc(SHA1Length * 2 + 1);
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char *hexBuffer = stringBuffer;
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for (int i=0; i<SHA1Length; i++) {
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*hexBuffer++ = hexdigits[(MDDigest[i] >> 4) & 0xF];
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*hexBuffer++ = hexdigits[MDDigest[i] & 0xF];
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}
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*hexBuffer = '\0';
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return stringBuffer;
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}
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char *SHA1File(const char *path) {
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FILE *file = fopen(path, "r");
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if (file==NULL)
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return NULL;
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struct SHA1Context MDContext;
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unsigned char MDDigest[SHA1Length];
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SHA1Init(&MDContext);
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int length;
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do {
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unsigned char MDData[MDFileReadLength];
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length = fread(&MDData, 1, MDFileReadLength, file);
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SHA1Update(&MDContext, MDData, length);
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} while (length>0);
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SHA1Final(MDDigest, &MDContext);
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fclose(file);
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char *stringBuffer = (char *)malloc(SHA1Length * 2 + 1);
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char *hexBuffer = stringBuffer;
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for (int i=0; i<SHA1Length; i++) {
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*hexBuffer++ = hexdigits[(MDDigest[i] >> 4) & 0xF];
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*hexBuffer++ = hexdigits[MDDigest[i] & 0xF];
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}
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*hexBuffer = '\0';
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return stringBuffer;
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}
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void SHA1Init(struct SHA1Context *context) {
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context->buf[0] = 0x67452301;
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context->buf[1] = 0xEFCDAB89;
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context->buf[2] = 0x98BADCFE;
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context->buf[3] = 0x10325476;
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context->buf[4] = 0xC3D2E1F0;
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context->bits[0] = 0;
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context->bits[1] = 0;
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}
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void SHA1Update(struct SHA1Context *context, const unsigned char *buf, unsigned len) {
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u_int32_t i, j;
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j = context->bits[0];
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if ((context->bits[0] += len << 3) < j)
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context->bits[1]++;
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context->bits[1] += (len>>29);
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j = (j >> 3) & 63;
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if ((j + len) > 63) {
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memcpy(&context->in[j], buf, (i = 64-j));
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SHA1Transform(context->buf, context->in);
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for ( ; i + 63 < len; i += 64) {
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SHA1Transform(context->buf, &buf[i]);
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}
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j = 0;
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}
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else i = 0;
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memcpy(&context->in[j], &buf[i], len - i);
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}
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void SHA1Final(unsigned char digest[SHA1Length], struct SHA1Context *context) {
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unsigned char bits[8];
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unsigned int count;
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putu32(context->bits[1], bits);
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putu32(context->bits[0], bits + 4);
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count = (context->bits[0] >> 3) & 0x3f;
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count = (count < 56) ? (56 - count) : (120 - count);
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SHA1Update(context, MDPadding, count);
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SHA1Update(context, bits, 8);
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for (int i=0; i<5; i++)
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putu32(context->buf[i], digest + (4 * i));
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memset(context, 0, sizeof(context));
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}
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#define SHA1_rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
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#if BYTE_ORDER == LITTLE_ENDIAN
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#define SHA1_blk0(i) (block->l[i] = (SHA1_rol(block->l[i], 24)&0xFF00FF00) |(SHA1_rol(block->l[i], 8)&0x00FF00FF))
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#elif BYTE_ORDER == BIG_ENDIAN
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#define SHA1_blk0(i) block->l[i]
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#else
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#error "Endianness not defined!"
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#endif
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#define SHA1_blk(i) (block->l[i&15] = SHA1_rol(block->l[(i+13)&15]^block->l[(i+8)&15] ^block->l[(i+2)&15]^block->l[i&15], 1))
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#define SHA1_R0(v, w, x, y, z, i) z+=((w&(x^y))^y)+SHA1_blk0(i)+0x5A827999+SHA1_rol(v, 5);w=SHA1_rol(w, 30);
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#define SHA1_R1(v, w, x, y, z, i) z+=((w&(x^y))^y)+SHA1_blk(i)+0x5A827999+SHA1_rol(v, 5);w=SHA1_rol(w, 30);
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#define SHA1_R2(v, w, x, y, z, i) z+=(w^x^y)+SHA1_blk(i)+0x6ED9EBA1+SHA1_rol(v, 5);w=SHA1_rol(w, 30);
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#define SHA1_R3(v, w, x, y, z, i) z+=(((w|x)&y)|(w&x))+SHA1_blk(i)+0x8F1BBCDC+SHA1_rol(v, 5);w=SHA1_rol(w, 30);
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#define SHA1_R4(v, w, x, y, z, i) z+=(w^x^y)+SHA1_blk(i)+0xCA62C1D6+SHA1_rol(v, 5);w=SHA1_rol(w, 30);
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#define SHA1STEP(v, w, x, y, z, i) \
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if (i<16) {SHA1_R0(v, w, x, y, z, i);} else \
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if (i<20) {SHA1_R1(v, w, x, y, z, i);} else \
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if (i<40) {SHA1_R2(v, w, x, y, z, i);} else \
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if (i<60) {SHA1_R3(v, w, x, y, z, i);} else \
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if (i<80) {SHA1_R4(v, w, x, y, z, i);}
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void SHA1Transform(uint32_t buf[SHA1BufferSize], const unsigned char inraw[64]) {
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typedef union {
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char c[64];
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u_int32_t l[16];
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} SHA1LONG;
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SHA1LONG *block = (SHA1LONG *)inraw;
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u_int32_t a = buf[0];
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u_int32_t b = buf[1];
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u_int32_t c = buf[2];
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u_int32_t d = buf[3];
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u_int32_t e = buf[4];
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for (int i=0; i<79; i = i+5) {
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SHA1STEP(a, b, c, d, e, i);
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SHA1STEP(e, a, b, c, d, i + 1);
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SHA1STEP(d, e, a, b, c, i + 2);
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SHA1STEP(c, d, e, a, b, i + 3);
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SHA1STEP(b, c, d, e, a, i + 4);
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}
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buf[0] += a;
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buf[1] += b;
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buf[2] += c;
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buf[3] += d;
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buf[4] += e;
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}
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