NSString+MD5.m

//
//  NSString+MD5.m
//  LastHistory
//
//  Created by Frederik Seiffert on 28.11.08.
//  Copyright 2008 Frederik Seiffert. All rights reserved.
//

#import "NSString+MD5.h"

#import <CommonCrypto/CommonDigest.h>

@implementation NSString (MD5)

- (NSString *)md5
{
	const char *cStr = [self UTF8String];
	unsigned char result[CC_MD5_DIGEST_LENGTH];
	
	CC_MD5(cStr, strlen(cStr), result);
	
	NSMutableString *resultStr = [NSMutableString stringWithCapacity:CC_MD5_DIGEST_LENGTH*2];
	for (int i = 0; i < CC_MD5_DIGEST_LENGTH; i++) {
		[resultStr appendFormat:@"%02x", result[i]];
	}
	return [[resultStr copy] autorelease];
}

@end