274 lines
7.5 KiB
Objective-C
274 lines
7.5 KiB
Objective-C
//
|
|
// MGMMD2.m
|
|
//
|
|
// Created by Mr. Gecko <GRMrGecko@gmail.com> on 5/27/11.
|
|
// No Copyright Claimed. Public Domain.
|
|
// C Algorithm created by Tom St Denis <tomstdenis@gmail.com> <http://libtom.org>
|
|
//
|
|
|
|
#ifdef __NEXT_RUNTIME__
|
|
#import "MGMMD2.h"
|
|
#import "MGMTypes.h"
|
|
|
|
NSString * const MDNMD2 = @"md2";
|
|
|
|
@implementation NSString (MGMMD2)
|
|
- (NSString *)MD2 {
|
|
NSData *MDData = [self dataUsingEncoding:NSUTF8StringEncoding];
|
|
struct MD2Context MDContext;
|
|
unsigned char MDDigest[MD2Length];
|
|
|
|
MD2Init(&MDContext);
|
|
MD2Update(&MDContext, [MDData bytes], [MDData length]);
|
|
MD2Final(MDDigest, &MDContext);
|
|
|
|
char *stringBuffer = (char *)malloc(MD2Length * 2 + 1);
|
|
char *hexBuffer = stringBuffer;
|
|
|
|
for (int i=0; i<MD2Length; i++) {
|
|
*hexBuffer++ = hexdigits[(MDDigest[i] >> 4) & 0xF];
|
|
*hexBuffer++ = hexdigits[MDDigest[i] & 0xF];
|
|
}
|
|
*hexBuffer = '\0';
|
|
NSString *hash = [NSString stringWithUTF8String:stringBuffer];
|
|
free(stringBuffer);
|
|
return hash;
|
|
}
|
|
- (NSString *)pathMD2 {
|
|
NSFileHandle *file = [NSFileHandle fileHandleForReadingAtPath:self];
|
|
if (file==nil)
|
|
return nil;
|
|
struct MD2Context MDContext;
|
|
unsigned char MDDigest[MD2Length];
|
|
|
|
MD2Init(&MDContext);
|
|
int length;
|
|
do {
|
|
NSAutoreleasePool *pool = [NSAutoreleasePool new];
|
|
NSData *MDData = [file readDataOfLength:MDFileReadLength];
|
|
length = [MDData length];
|
|
MD2Update(&MDContext, [MDData bytes], length);
|
|
[pool release];
|
|
} while (length>0);
|
|
MD2Final(MDDigest, &MDContext);
|
|
|
|
char *stringBuffer = (char *)malloc(MD2Length * 2 + 1);
|
|
char *hexBuffer = stringBuffer;
|
|
|
|
for (int i=0; i<MD2Length; i++) {
|
|
*hexBuffer++ = hexdigits[(MDDigest[i] >> 4) & 0xF];
|
|
*hexBuffer++ = hexdigits[MDDigest[i] & 0xF];
|
|
}
|
|
*hexBuffer = '\0';
|
|
NSString *hash = [NSString stringWithUTF8String:stringBuffer];
|
|
free(stringBuffer);
|
|
return hash;
|
|
}
|
|
@end
|
|
#else
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include "MGMMD2.h"
|
|
#include "MGMTypes.h"
|
|
#endif
|
|
|
|
const struct MGMHashDescription MD2Desc = {
|
|
"md2",
|
|
sizeof(struct MD2Context),
|
|
(void(*)(void *))&MD2Init,
|
|
(void(*)(void *, const unsigned char *, unsigned))&MD2Update,
|
|
(void(*)(unsigned char *, void *))&MD2Final,
|
|
MD2Length
|
|
};
|
|
|
|
char *MD2String(const char *string, int length) {
|
|
struct MD2Context MDContext;
|
|
unsigned char MDDigest[MD2Length];
|
|
|
|
MD2Init(&MDContext);
|
|
MD2Update(&MDContext, (const unsigned char *)string, length);
|
|
MD2Final(MDDigest, &MDContext);
|
|
|
|
char *stringBuffer = (char *)malloc(MD2Length * 2 + 1);
|
|
char *hexBuffer = stringBuffer;
|
|
|
|
for (int i=0; i<MD2Length; i++) {
|
|
*hexBuffer++ = hexdigits[(MDDigest[i] >> 4) & 0xF];
|
|
*hexBuffer++ = hexdigits[MDDigest[i] & 0xF];
|
|
}
|
|
*hexBuffer = '\0';
|
|
|
|
return stringBuffer;
|
|
}
|
|
char *MD2File(const char *path) {
|
|
FILE *file = fopen(path, "r");
|
|
if (file==NULL)
|
|
return NULL;
|
|
struct MD2Context MDContext;
|
|
unsigned char MDDigest[MD2Length];
|
|
|
|
MD2Init(&MDContext);
|
|
int length;
|
|
do {
|
|
unsigned char MDData[MDFileReadLength];
|
|
length = fread(&MDData, 1, MDFileReadLength, file);
|
|
MD2Update(&MDContext, MDData, length);
|
|
} while (length>0);
|
|
MD2Final(MDDigest, &MDContext);
|
|
|
|
fclose(file);
|
|
|
|
char *stringBuffer = (char *)malloc(MD2Length * 2 + 1);
|
|
char *hexBuffer = stringBuffer;
|
|
|
|
for (int i=0; i<MD2Length; i++) {
|
|
*hexBuffer++ = hexdigits[(MDDigest[i] >> 4) & 0xF];
|
|
*hexBuffer++ = hexdigits[MDDigest[i] & 0xF];
|
|
}
|
|
*hexBuffer = '\0';
|
|
|
|
return stringBuffer;
|
|
}
|
|
|
|
void MD2Init(struct MD2Context *context) {
|
|
memset(context->X, 0, sizeof(context->X));
|
|
memset(context->checksum, 0, sizeof(context->checksum));
|
|
memset(context->buf, 0, sizeof(context->buf));
|
|
context->curlen = 0;
|
|
}
|
|
|
|
static const unsigned char MD2PI_SUBST[256] = {
|
|
41, 46, 67, 201, 162, 216, 124, 1, 61, 54, 84, 161, 236, 240, 6,
|
|
19, 98, 167, 5, 243, 192, 199, 115, 140, 152, 147, 43, 217, 188,
|
|
76, 130, 202, 30, 155, 87, 60, 253, 212, 224, 22, 103, 66, 111, 24,
|
|
138, 23, 229, 18, 190, 78, 196, 214, 218, 158, 222, 73, 160, 251,
|
|
245, 142, 187, 47, 238, 122, 169, 104, 121, 145, 21, 178, 7, 63,
|
|
148, 194, 16, 137, 11, 34, 95, 33, 128, 127, 93, 154, 90, 144, 50,
|
|
39, 53, 62, 204, 231, 191, 247, 151, 3, 255, 25, 48, 179, 72, 165,
|
|
181, 209, 215, 94, 146, 42, 172, 86, 170, 198, 79, 184, 56, 210,
|
|
150, 164, 125, 182, 118, 252, 107, 226, 156, 116, 4, 241, 69, 157,
|
|
112, 89, 100, 113, 135, 32, 134, 91, 207, 101, 230, 45, 168, 2, 27,
|
|
96, 37, 173, 174, 176, 185, 246, 28, 70, 97, 105, 52, 64, 126, 15,
|
|
85, 71, 163, 35, 221, 81, 175, 58, 195, 92, 249, 206, 186, 197,
|
|
234, 38, 44, 83, 13, 110, 133, 40, 132, 9, 211, 223, 205, 244, 65,
|
|
129, 77, 82, 106, 220, 55, 200, 108, 193, 171, 250, 36, 225, 123,
|
|
8, 12, 189, 177, 74, 120, 136, 149, 139, 227, 99, 232, 109, 233,
|
|
203, 213, 254, 59, 0, 29, 57, 242, 239, 183, 14, 102, 88, 208, 228,
|
|
166, 119, 114, 248, 235, 117, 75, 10, 49, 68, 80, 180, 143, 237,
|
|
31, 26, 219, 153, 141, 51, 159, 17, 131, 20
|
|
};
|
|
|
|
void MD2Update(struct MD2Context *context, const unsigned char *buf, unsigned len) {
|
|
if (buf==NULL)
|
|
return;
|
|
unsigned long n;
|
|
if (context->curlen > sizeof(context->buf))
|
|
return;
|
|
while (len>0) {
|
|
n = MIN(len, (16 - context->curlen));
|
|
memcpy(context->buf + context->curlen, buf, (size_t)n);
|
|
context->curlen += n;
|
|
buf += n;
|
|
len -= n;
|
|
|
|
if (context->curlen == MD2Length) {
|
|
MD2Transform(context);
|
|
MD2UpdateCheckSum(context);
|
|
context->curlen = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
void MD2Final(unsigned char digest[MD2Length], struct MD2Context *context) {
|
|
|
|
if (context->curlen >= sizeof(context->buf))
|
|
return;
|
|
|
|
/* pad the message */
|
|
unsigned long k = MD2Length - context->curlen;
|
|
for (unsigned long i=context->curlen; i<MD2Length; i++) {
|
|
context->buf[i] = (unsigned char)k;
|
|
}
|
|
|
|
/* hash and update */
|
|
MD2Transform(context);
|
|
MD2UpdateCheckSum(context);
|
|
|
|
/* hash checksum */
|
|
memcpy(context->buf, context->checksum, MD2Length);
|
|
MD2Transform(context);
|
|
|
|
memcpy(digest, context->X, MD2Length);
|
|
|
|
memset(context, 0, sizeof(struct MD2Context));
|
|
}
|
|
|
|
void MD2UpdateCheckSum(struct MD2Context *context) {
|
|
unsigned char L = context->checksum[15];
|
|
for (int j=0; j<MD2Length; j++) {
|
|
L = (context->checksum[j] ^= MD2PI_SUBST[(int)(context->buf[j] ^ L)] & 255);
|
|
}
|
|
}
|
|
|
|
void MD2Transform(struct MD2Context *context) {
|
|
for (int j=0; j<MD2Length; j++) {
|
|
context->X[16+j] = context->buf[j];
|
|
context->X[32+j] = context->X[j] ^ context->X[16+j];
|
|
}
|
|
|
|
unsigned char t = 0;
|
|
|
|
for (int j=0; j<18; j++) {
|
|
for (int k=0; k<48; k++) {
|
|
t = (context->X[k] ^= MD2PI_SUBST[(int)(t & 255)]);
|
|
}
|
|
t = (t + (unsigned char)j) & 255;
|
|
}
|
|
}
|
|
|
|
int MD2Test() {
|
|
static const struct {
|
|
char *msg;
|
|
unsigned char hash[MD2Length];
|
|
} tests[] = {
|
|
{
|
|
"",
|
|
{0x83,0x50,0xe5,0xa3,0xe2,0x4c,0x15,0x3d,0xf2,0x27,0x5c,0x9f,0x80,0x69,0x27,0x73}
|
|
},
|
|
{
|
|
"a",
|
|
{0x32,0xec,0x01,0xec,0x4a,0x6d,0xac,0x72,0xc0,0xab,0x96,0xfb,0x34,0xc0,0xb5,0xd1}
|
|
},
|
|
{
|
|
"message digest",
|
|
{0xab,0x4f,0x49,0x6b,0xfb,0x2a,0x53,0x0b,0x21,0x9f,0xf3,0x30,0x31,0xfe,0x06,0xb0}
|
|
},
|
|
{
|
|
"abcdefghijklmnopqrstuvwxyz",
|
|
{0x4e,0x8d,0xdf,0xf3,0x65,0x02,0x92,0xab,0x5a,0x41,0x08,0xc3,0xaa,0x47,0x94,0x0b}
|
|
},
|
|
{
|
|
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789",
|
|
{0xda,0x33,0xde,0xf2,0xa4,0x2d,0xf1,0x39,0x75,0x35,0x28,0x46,0xc3,0x03,0x38,0xcd}
|
|
},
|
|
{
|
|
"12345678901234567890123456789012345678901234567890123456789012345678901234567890",
|
|
{0xd5,0x97,0x6f,0x79,0xd8,0x3d,0x3a,0x0d,0xc9,0x80,0x6c,0x3c,0x66,0xf3,0xef,0xd8}
|
|
},
|
|
{NULL, {0}}
|
|
};
|
|
|
|
struct MD2Context MDContext;
|
|
unsigned char MDDigest[MD2Length];
|
|
|
|
for (int i=0; tests[i].msg!=NULL; i++) {
|
|
MD2Init(&MDContext);
|
|
MD2Update(&MDContext, (unsigned char *)tests[i].msg, (unsigned long)strlen(tests[i].msg));
|
|
MD2Final(MDDigest, &MDContext);
|
|
|
|
if (memcmp(MDDigest, tests[i].hash, MD2Length))
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
} |