mirror of
https://github.com/wiidev/usbloadergx.git
synced 2024-07-06 18:01:49 +02:00
30535c6f5d
formatted the code to make it easier to read. no functional changes at all.
i didn't put anything from the libwiigui folder or banner folder in the beautifier.
my automated .bat seems to have done a good job. the only places i see it fucked up was on (GXColor){blablabla}. it treated the brackets in the color like all the other brackets and put the color on a new line and indented it. i think i fixed most of them. not sure if it messed up anywhere else. also not sure about how it handled different linebreaks. it looks fine on windows. if it looks messed up on linux, it can be reverted.
the code still compiles and runs fine.
228 lines
6.2 KiB
C
228 lines
6.2 KiB
C
/*
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SHA-1 in C
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By Steve Reid <steve@edmweb.com>
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100% Public Domain
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Test Vectors (from FIPS PUB 180-1)
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"abc"
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A9993E36 4706816A BA3E2571 7850C26C 9CD0D89D
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"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"
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84983E44 1C3BD26E BAAE4AA1 F95129E5 E54670F1
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A million repetitions of "a"
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34AA973C D4C4DAA4 F61EEB2B DBAD2731 6534016F
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*/
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/* #define LITTLE_ENDIAN * This should be #define'd if true. */
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#define SHA1HANDSOFF
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#include <stdio.h>
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#include <string.h>
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#include "sha1.h"
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#define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
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/* blk0() and blk() perform the initial expand. */
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/* I got the idea of expanding during the round function from SSLeay */
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#ifdef LITTLE_ENDIAN
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#define blk0(i) (block->l[i] = (rol(block->l[i],24)&0xFF00FF00) \
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|(rol(block->l[i],8)&0x00FF00FF))
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#else
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#define blk0(i) block->l[i]
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#endif
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#define blk(i) (block->l[i&15] = rol(block->l[(i+13)&15]^block->l[(i+8)&15] \
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^block->l[(i+2)&15]^block->l[i&15],1))
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/* (R0+R1), R2, R3, R4 are the different operations used in SHA1 */
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#define R0(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk0(i)+0x5A827999+rol(v,5);w=rol(w,30);
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#define R1(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk(i)+0x5A827999+rol(v,5);w=rol(w,30);
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#define R2(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0x6ED9EBA1+rol(v,5);w=rol(w,30);
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#define R3(v,w,x,y,z,i) z+=(((w|x)&y)|(w&x))+blk(i)+0x8F1BBCDC+rol(v,5);w=rol(w,30);
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#define R4(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0xCA62C1D6+rol(v,5);w=rol(w,30);
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/* Hash a single 512-bit block. This is the core of the algorithm. */
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void SHA1Transform(unsigned long state[5], unsigned char buffer[64]) {
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unsigned long a, b, c, d, e;
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typedef union {
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unsigned char c[64];
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unsigned long l[16];
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} CHAR64LONG16;
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CHAR64LONG16* block;
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#ifdef SHA1HANDSOFF
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static unsigned char workspace[64];
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block = (CHAR64LONG16*)workspace;
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memcpy(block, buffer, 64);
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#else
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block = (CHAR64LONG16*)buffer;
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#endif
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/* Copy context->state[] to working vars */
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a = state[0];
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b = state[1];
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c = state[2];
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d = state[3];
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e = state[4];
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/* 4 rounds of 20 operations each. Loop unrolled. */
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R0(a,b,c,d,e, 0);
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R0(e,a,b,c,d, 1);
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R0(d,e,a,b,c, 2);
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R0(c,d,e,a,b, 3);
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R0(b,c,d,e,a, 4);
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R0(a,b,c,d,e, 5);
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R0(e,a,b,c,d, 6);
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R0(d,e,a,b,c, 7);
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R0(c,d,e,a,b, 8);
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R0(b,c,d,e,a, 9);
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R0(a,b,c,d,e,10);
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R0(e,a,b,c,d,11);
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R0(d,e,a,b,c,12);
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R0(c,d,e,a,b,13);
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R0(b,c,d,e,a,14);
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R0(a,b,c,d,e,15);
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R1(e,a,b,c,d,16);
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R1(d,e,a,b,c,17);
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R1(c,d,e,a,b,18);
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R1(b,c,d,e,a,19);
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R2(a,b,c,d,e,20);
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R2(e,a,b,c,d,21);
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R2(d,e,a,b,c,22);
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R2(c,d,e,a,b,23);
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R2(b,c,d,e,a,24);
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R2(a,b,c,d,e,25);
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R2(e,a,b,c,d,26);
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R2(d,e,a,b,c,27);
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R2(c,d,e,a,b,28);
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R2(b,c,d,e,a,29);
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R2(a,b,c,d,e,30);
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R2(e,a,b,c,d,31);
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R2(d,e,a,b,c,32);
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R2(c,d,e,a,b,33);
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R2(b,c,d,e,a,34);
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R2(a,b,c,d,e,35);
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R2(e,a,b,c,d,36);
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R2(d,e,a,b,c,37);
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R2(c,d,e,a,b,38);
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R2(b,c,d,e,a,39);
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R3(a,b,c,d,e,40);
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R3(e,a,b,c,d,41);
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R3(d,e,a,b,c,42);
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R3(c,d,e,a,b,43);
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R3(b,c,d,e,a,44);
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R3(a,b,c,d,e,45);
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R3(e,a,b,c,d,46);
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R3(d,e,a,b,c,47);
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R3(c,d,e,a,b,48);
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R3(b,c,d,e,a,49);
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R3(a,b,c,d,e,50);
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R3(e,a,b,c,d,51);
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R3(d,e,a,b,c,52);
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R3(c,d,e,a,b,53);
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R3(b,c,d,e,a,54);
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R3(a,b,c,d,e,55);
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R3(e,a,b,c,d,56);
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R3(d,e,a,b,c,57);
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R3(c,d,e,a,b,58);
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R3(b,c,d,e,a,59);
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R4(a,b,c,d,e,60);
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R4(e,a,b,c,d,61);
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R4(d,e,a,b,c,62);
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R4(c,d,e,a,b,63);
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R4(b,c,d,e,a,64);
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R4(a,b,c,d,e,65);
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R4(e,a,b,c,d,66);
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R4(d,e,a,b,c,67);
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R4(c,d,e,a,b,68);
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R4(b,c,d,e,a,69);
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R4(a,b,c,d,e,70);
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R4(e,a,b,c,d,71);
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R4(d,e,a,b,c,72);
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R4(c,d,e,a,b,73);
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R4(b,c,d,e,a,74);
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R4(a,b,c,d,e,75);
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R4(e,a,b,c,d,76);
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R4(d,e,a,b,c,77);
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R4(c,d,e,a,b,78);
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R4(b,c,d,e,a,79);
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/* Add the working vars back into context.state[] */
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state[0] += a;
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state[1] += b;
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state[2] += c;
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state[3] += d;
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state[4] += e;
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/* Wipe variables */
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a = b = c = d = e = 0;
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}
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/* SHA1Init - Initialize new context */
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void SHA1Init(SHA1_CTX* context) {
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/* SHA1 initialization constants */
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context->state[0] = 0x67452301;
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context->state[1] = 0xEFCDAB89;
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context->state[2] = 0x98BADCFE;
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context->state[3] = 0x10325476;
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context->state[4] = 0xC3D2E1F0;
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context->count[0] = context->count[1] = 0;
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}
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/* Run your data through this. */
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void SHA1Update(SHA1_CTX* context, unsigned char* data, unsigned int len) {
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unsigned int i, j;
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j = (context->count[0] >> 3) & 63;
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if ((context->count[0] += len << 3) < (len << 3)) context->count[1]++;
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context->count[1] += (len >> 29);
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if ((j + len) > 63) {
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memcpy(&context->buffer[j], data, (i = 64-j));
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SHA1Transform(context->state, context->buffer);
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for ( ; i + 63 < len; i += 64) {
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SHA1Transform(context->state, &data[i]);
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}
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j = 0;
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} else i = 0;
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memcpy(&context->buffer[j], &data[i], len - i);
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}
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/* Add padding and return the message digest. */
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void SHA1Final(unsigned char digest[20], SHA1_CTX* context) {
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unsigned long i, j;
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unsigned char finalcount[8];
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for (i = 0; i < 8; i++) {
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finalcount[i] = (unsigned char)((context->count[(i >= 4 ? 0 : 1)]
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>> ((3-(i & 3)) * 8) ) & 255); /* Endian independent */
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}
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SHA1Update(context, (unsigned char *)"\200", 1);
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while ((context->count[0] & 504) != 448) {
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SHA1Update(context, (unsigned char *)"\0", 1);
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}
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SHA1Update(context, finalcount, 8); /* Should cause a SHA1Transform() */
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for (i = 0; i < 20; i++) {
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digest[i] = (unsigned char)
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((context->state[i>>2] >> ((3-(i & 3)) * 8) ) & 255);
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}
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/* Wipe variables */
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i = j = 0;
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memset(context->buffer, 0, 64);
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memset(context->state, 0, 20);
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memset(context->count, 0, 8);
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memset(&finalcount, 0, 8);
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#ifdef SHA1HANDSOFF /* make SHA1Transform overwrite it's own static vars */
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SHA1Transform(context->state, context->buffer);
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#endif
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}
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void SHA1(unsigned char *ptr, unsigned int size, unsigned char *outbuf) {
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SHA1_CTX ctx;
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SHA1Init(&ctx);
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SHA1Update(&ctx, ptr, size);
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SHA1Final(outbuf, &ctx);
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}
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