base64解码 加密

#import "GTMDefines.h"

// 1. base64加密

    // 先获取压缩图片

    UIImage *compressionImage = [selforiginImage:image scaleToSize:CGSizeMake(120, 120)];

    // 再转换图片

    NSData *data = UIImageJPEGRepresentation(compressionImage, 1.0f);

    NSString *encodedImageStr = [[NSStringalloc] initWithData:[GTMBase64encodeData:data]encoding:NSUTF8StringEncoding];

// 1.显示昵称 (base64解密)

            _nicknameLabel.text = [[NSStringalloc] initWithData:[GTMBase64decodeString:user.Nickname] encoding:NSUTF8StringEncoding];