NSData 转 md5

NSData 转 md5

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NSData+MD5Digest.h

import <Foundation/Foundation.h>

@interface NSData (MD5Digest)

+(NSData *)MD5Digest:(NSData *)input;

-(NSData *)MD5Digest;

+(NSString *)MD5HexDigest:(NSData *)input;

-(NSString *)MD5HexDigest;

@end

NSData+MD5Digest.m

import "NSData+MD5Digest.h"

import <CommonCrypto/CommonDigest.h>

@implementation NSData (MD5)

+(NSData *)MD5Digest:(NSData *)input {

unsigned char result[CC_MD5_DIGEST_LENGTH];

CC_MD5(input.bytes, (CC_LONG)input.length, result);

return [[NSData alloc] initWithBytes:result length:CC_MD5_DIGEST_LENGTH];

}

-(NSData *)MD5Digest {

return [NSData MD5Digest:self];

}

+(NSString *)MD5HexDigest:(NSData *)input {

unsigned char result[CC_MD5_DIGEST_LENGTH];

CC_MD5(input.bytes, (CC_LONG)input.length, result);

NSMutableString ret = [NSMutableString stringWithCapacity:CC_MD5_DIGEST_LENGTH2];

for (int i = 0; i<CC_MD5_DIGEST_LENGTH; i++) {

[ret appendFormat:@"%02x",result[i]];

}

return ret;

}

-(NSString *)MD5HexDigest {

return [NSData MD5HexDigest:self];

}

@end

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源github地址： suiyi