iOS 分类之NSString+MD5

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NSString+MD5.h

////  NSString+MD5.h//  Shangzun////  Created by 黄健 on 16/4/8.//  Copyright © 2016年 黄健. All rights reserved.//#import <Foundation/Foundation.h>@interface NSString (MD5)// MD5的32位小写加密- (NSString*)MD5_32BitLower;// MD5的32位大写加密- (NSString*)MD5_32BitUpper;@end

NSString+MD5.m

////  NSString+MD5.m//  Shangzun////  Created by 黄健 on 16/4/8.//  Copyright © 2016年 黄健. All rights reserved.//#import "NSString+MD5.h"#import <CommonCrypto/CommonDigest.h>@implementation NSString (HJMD5)- (NSString*)MD5_32BitLower{    const char *cStr = [self UTF8String];    unsigned char result[16];    NSNumber *num = [NSNumber numberWithUnsignedLong:strlen(cStr)];    CC_MD5( cStr,[num intValue], 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]             ] lowercaseString];}- (NSString*)MD5_32BitUpper{    const char *cStr = [self UTF8String];    unsigned char result[16];    NSNumber *num = [NSNumber numberWithUnsignedLong:strlen(cStr)];    CC_MD5( cStr,[num intValue], 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]             ] uppercaseString];}@end

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