Remove unused tools/md5.c

tools/Makefile

@@ -10,15 +10,14 @@ tools := \
 	palette \
 	pokemon_animation \
 	pokemon_animation_graphics \
-	gfx \
-	md5
+	gfx
 all: $(tools)
 	@:
 
 clean:
 	rm -f $(tools)
 
-gfx md5: common.h
+gfx: common.h
 
 lzcomp: CFLAGS = -O3 -flto -std=c11 -Wall -Wextra -pedantic -Wno-strict-overflow -Wno-sign-compare
 lzcomp: $(wildcard lz/*.c) $(wildcard lz/*.h)

tools/md5.c

@@ -1,128 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdint.h>
-
-#include "common.h"
-
-static const int s[64] = {
-	7, 12, 17, 22,  7, 12, 17, 22,  7, 12, 17, 22,  7, 12, 17, 22,
-	5,  9, 14, 20,  5,  9, 14, 20,  5,  9, 14, 20,  5,  9, 14, 20,
-	4, 11, 16, 23,  4, 11, 16, 23,  4, 11, 16, 23,  4, 11, 16, 23,
-	6, 10, 15, 21,  6, 10, 15, 21,  6, 10, 15, 21,  6, 10, 15, 21,
-};
-
-static const uint32_t K[64] = {
-	0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee,
-	0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501,
-	0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be,
-	0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821,
-	0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa,
-	0xd62f105d, 0x02441453, 0xd8a1e681, 0xe7d3fbc8,
-	0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed,
-	0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a,
-	0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c,
-	0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70,
-	0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x04881d05,
-	0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665,
-	0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039,
-	0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1,
-	0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1,
-	0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391,
-};
-
-#define rotate_left_32(value, by) \
-	((((value) << (by)) & 0xffffffff) | ((value) >> (32 - (by))))
-
-void md5_wikipedia(uint8_t *data, int length, uint8_t *result) {
-
-	uint8_t *message = calloc(length + 64, sizeof(uint8_t));
-	memcpy(message, data, length);
-
-	int64_t orig_bitlength = length * 8;
-
-	message[length++] |= 1 << 7;
-
-	while (length % 64 != (64 - 8)) {
-		length++;
-	}
-	for (int i = 0; i < 8; i++) {
-		message[length++] = (orig_bitlength >> (i * 8)) & 0xff;
-	}
-
-	int a0 = 0x67452301;
-	int b0 = 0xefcdab89;
-	int c0 = 0x98badcfe;
-	int d0 = 0x10325476;
-
-	for (int start = 0; start < length; start += 64) {
-		uint32_t M[16];
-		for (int j = 0; j < 16; j++) {
-			uint8_t *word = &message[start + j * 4];
-			M[j] = *word++;
-			M[j] |= *word++ << 8;
-			M[j] |= *word++ << 16;
-			M[j] |= *word++ << 24;
-		}
-
-		int A = a0;
-		int B = b0;
-		int C = c0;
-		int D = d0;
-		for (int i = 0; i < 64; i++) {
-			int F, g;
-			switch (i / 16) {
-			case 0:
-				F = (B & C) | (~B & D);
-				g = i;
-				break;
-			case 1:
-				F = (D & B) | (~D & C);
-				g = (5 * i + 1) % 16;
-				break;
-			case 2:
-				F = B ^ C ^ D;
-				g = (3 * i + 5) % 16;
-				break;
-			case 3:
-				F = C ^ (B | ~D);
-				g = (7 * i) % 16;
-				break;
-			}
-			int e = D;
-			D = C;
-			C = B;
-			B = B + rotate_left_32(A + F + K[i] + M[g], s[i]);
-			A = e;
-		}
-		a0 += A;
-		b0 += B;
-		c0 += C;
-		d0 += D;
-	}
-
-	int values[] = {a0, b0, c0, d0};
-	for (int i = 0; i < 16; i++) {
-		int value = values[i >> 2];
-		int shift = (i % 4) * 8;
-		result[i] = (value >> shift) & 0xff;
-	}
-
-	free(message);
-}
-
-int main(int argc, char *argv[]) {
-	if (argc < 2) {
-		exit(1);
-	}
-	char *infile = argv[1];
-	int size;
-	uint8_t *data = read_u8(infile, &size);
-
-	uint8_t result[16];
-	md5_wikipedia(data, size, result);
-	for (int i = 0; i < 16; i++) {
-		printf("%02x", result[i]);
-	}
-	printf("\n");
-}