iOS-MD5加密32位扩展类

//
//  NSString+MD5.h
//  Spread
//
//  Created by 邱学伟 on 16/4/26.
//  Copyright © 2016年 邱学伟. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface NSString (MD5)
/** 将字符串经MD5加密 */
+(NSString *)MD5:(NSString *)str;
@end

//
//  NSString+MD5.m
//  Spread
//
//  Created by 邱学伟 on 16/4/26.
//  Copyright © 2016年 邱学伟. All rights reserved.
//

#import "NSString+MD5.h"
#import <CommonCrypto/CommonDigest.h>

@implementation NSString (MD5)

/** 将字符串经MD5加密 */
+(NSString *)MD5:(NSString *)str{
const char *cStr = [str UTF8String];
unsigned char result[16];
CC_MD5(cStr, strlen(cStr), result); // This is the md5 call
NSLog(@"MD5->>>>>>%@",[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]
]);
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]
];
}

@end