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   源码介绍

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//
//  ViewController.m
//  text
//
//  Created by wangchonggang on 15/3/13.
//  Copyright (c) 2015年 wangchonggang. All rights reserved.
//

#import "ViewController.h"
#import "ConnectModel.h"

#import <CommonCrypto/CommonDigest.h>

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.

    NSString *str = [self md5HexDigest:@"abcd1234"];//MD5加密
    
}

- (NSString *)md5HexDigest:(NSString*)password
{
    const char *original_str = [password UTF8String];
    unsigned char result[CC_MD5_DIGEST_LENGTH];
    CC_MD5(original_str,strlen(original_str), result);
    NSMutableString *hash = [NSMutableString string];
    for (int i = 0; i < 16; i  )
    {
        [hash appendFormat:@"%02X", result[i]];
    }
    NSString *mdfiveString = [hash lowercaseString];
    
    NSLog(@"Encryption Result = %@",mdfiveString);
    return mdfiveString;
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end