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 请多多指教 .....................................................

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ViewController.m

////  ViewController.m//  Base64////  Created by dllo on 16/1/12.//  Copyright © 2016年 HaiTeng. All rights reserved.//#import "ViewController.h"#import "GTMBase64.h"@interface ViewController ()@end@implementation ViewController- (void)viewDidLoad {    [super viewDidLoad];    self.view.backgroundColor = [UIColor grayColor];        [self Base64];    }- (void)Base64{    //对字符串进行加密,实质上是进行BASE64编码.    NSString *encodStr = [GTMBase64 encodeBase64String:@"wanghaiteng504"];    NSLog(@"%@",encodStr); /*加密完毕,打印看看,编码后的效果*/        //解密    NSString *decodeStr = [GTMBase64 decodeBase64String:encodStr];    NSLog(@"%@",decodeStr);    //    //    //字典加密//    NSDictionary *dic = [NSDictionary dictionaryWithObjectsAndKeys:@"583267034",@"Username",@"wanghaiteng504",@"Userpass", nil];//    //字典转化为Data//    NSData *data = [NSJSONSerialization dataWithJSONObject:dic options:NSJSONWritingPrettyPrinted error:nil];//    NSData *encodeData = [GTMBase64 encodeData:data];//    NSLog(@"%@",encodeData);//    //    //解密//    NSData *decodeData = [GTMBase64 decodeData:encodeData];//    NSDictionary *di = [NSJSONSerialization JSONObjectWithData:decodeData options:0 error:nil];//    NSLog(@"%@",di);    }@end