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37 lines
857 B
Objective-C
37 lines
857 B
Objective-C
//
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// NSString+MD5.m
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// RestKit
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//
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// Created by Jeff Arena on 4/4/11.
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// Copyright 2011 Two Toasters. All rights reserved.
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//
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#import <CommonCrypto/CommonDigest.h>
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#import "NSString+MD5.h"
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#import "../Support/RKFixCategoryBug.h"
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RK_FIX_CATEGORY_BUG(NSString_MD5)
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@implementation NSString (MD5)
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- (NSString*)MD5 {
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// Create pointer to the string as UTF8
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const char* ptr = [self UTF8String];
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// Create byte array of unsigned chars
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unsigned char md5Buffer[CC_MD5_DIGEST_LENGTH];
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// Create 16 byte MD5 hash value, store in buffer
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CC_MD5(ptr, strlen(ptr), md5Buffer);
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// Convert MD5 value in the buffer to NSString of hex values
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NSMutableString* output = [NSMutableString stringWithCapacity:CC_MD5_DIGEST_LENGTH * 2];
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for (int i = 0; i < CC_MD5_DIGEST_LENGTH; i++) {
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[output appendFormat:@"%02x",md5Buffer[i]];
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}
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return output;
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}
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@end
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