IOS常用加密Encryption

NSString+Encryption.h

//

//  NSString+Encryption.h

//  haochang

//

//  Created by Administrator on 14-4-15.

//  Copyright (c) 2014年 Administrator. All rights reserved.

//



#import <Foundation/Foundation.h>



@interface NSString (Encryption)



+ (NSString *)md5:(NSString *)str;



+ (NSString*) sha1:(NSString *)str;



@end

NSString+Encryption.m

//

//  NSString+Encryption.m

//  haochang

//

//  Created by Administrator on 14-4-15.

//  Copyright (c) 2014年 Administrator. All rights reserved.

//



#import "NSString+Encryption.h"



#import <CommonCrypto/CommonDigest.h>



#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <unistd.h>

#include <sys/ioctl.h>

#include <sys/types.h>

#include <sys/socket.h>

#include <netinet/in.h>

#include <netdb.h>

#include <arpa/inet.h>

#include <sys/sockio.h>

#include <net/if.h>

#include <errno.h>

#include <net/if_dl.h>



#include <ifaddrs.h>

#include <arpa/inet.h>



#define min(a,b) ((a) < (b) ? (a) : (b))

#define max(a,b) ((a) > (b) ? (a) : (b))



@implementation NSString (Encryption)





+ (NSString *)md5:(NSString *)str{

    const char *cStr = [str UTF8String];

    unsigned char result[16];

    CC_MD5(cStr, strlen(cStr), result); // This is the md5 call

    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]

            ];

}

+ (NSString*) sha1:(NSString *)str

{

    const char *cstr = [str cStringUsingEncoding:NSUTF8StringEncoding];

    NSData *data = [NSData dataWithBytes:cstr length:str.length];

    

    uint8_t digest[CC_SHA1_DIGEST_LENGTH];

    

    CC_SHA1(data.bytes, data.length, digest);

    

    NSMutableString* output = [NSMutableString stringWithCapacity:CC_SHA1_DIGEST_LENGTH * 2];

    

    for(int i = 0; i < CC_SHA1_DIGEST_LENGTH; i++)

        [output appendFormat:@"%02x", digest[i]];

    

    return output;

}



@end