NSStringMD5.m

//
//  NSStringMD5.m
//
// Copyright (c) 2010 StarMedia
// 
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without
// restriction, including without limitation the rights to use,
// copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following
// conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//

#import "NSStringMD5.h"
#import <CommonCrypto/CommonDigest.h>

NSString * NSStringAsMD5(NSString * const str) {
	const char *cStr = [str UTF8String];
	unsigned char result[CC_MD5_DIGEST_LENGTH];
	CC_MD5( cStr, strlen(cStr), result );
	return [NSString stringWithFormat: @"%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X",
			result[0], result[1],
			result[2], result[3],
			result[4], result[5],
			result[6], result[7],
			result[8], result[9],
			result[10], result[11],
			result[12], result[13],
			result[14], result[15]];
}

NSString * NSDataAsMD5(NSData * const d) {
	unsigned char result[CC_MD5_DIGEST_LENGTH];
	CC_MD5( [d bytes], [d length], result );
	return [NSString stringWithFormat: @"%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X",
			result[0], result[1],
			result[2], result[3],
			result[4], result[5],
			result[6], result[7],
			result[8], result[9],
			result[10], result[11],
			result[12], result[13],
			result[14], result[15]];
}