NSData+MD5.h文件
#import <Foundation/Foundation.h>
@interface NSData (MD5)
– (NSString *)getMD5Data;
@end
NSData+MD5.m文件(实现加密过程)
import “NSData+MD5.h”
#import <CommonCrypto/CommonCrypto.h>
@implementation NSData (MD5)
– (NSString *)getMD5Data{
//1: 创建一个MD5对象
CC_MD5_CTX md5;
//2: 初始化MD5
CC_MD5_Init(&md5);
//3: 准备MD5加密
CC_MD5_Update(&md5, self.bytes, (CC_LONG)self.length);
//4: 准备一个字符串数组, 存储MD5加密之后的数据
unsigned char result[CC_MD5_DIGEST_LENGTH];
//5: 结束MD5加密
CC_MD5_Final(result, &md5);
NSMutableString *resultString = [NSMutableString string];
//6:从result数组中获取最终结果
for (int i = 0; i < CC_MD5_DIGEST_LENGTH; i++) {
[resultString appendFormat:@”%02X”, result[i]];
}
return resultString;
}
@end
