一种简便的ios图片加密方法-对图片进行base64编码

最近项目中需要对图片的安全做处理,保证用户(即使是越狱用户)也不能查看到从服务器中下载下来的图片。

折腾了多种方法,发现还是使用base64对储存的文件进行一次编码最方便,编码之后,用户打开图片时将显示为全黑色

NSString *path1 = [NSHomeDirectory() stringByAppendingFormat:@"/Documents/bronze/download/img_0_0_0.png"];
//文件路径转换为data
NSData *imageData0 = [NSData dataWithContentsOfFile:path1];
//对data进行base64编码
NSData *imageData = [GTMBase64 encodeData:imageData0];
[imageData writeToFile:path1 atomically:YES];

 

NSString *imagePath = [NSHomeDirectory() stringByAppendingFormat:@"/Documents/bronze/download/img_0_0_0.png"];
NSData *data = [NSData dataWithContentsOfFile:imagePath];
NSData *data1 = [GTMBase64 decodeData:data];
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(100, 20, 300, 400)];
imageView.image = [UIImage imageWithData:data1];
imageView.backgroundColor = [UIColor redColor];
[self.view addSubview:imageView];

 参考:http://blog.csdn.net/yshen_dublin/article/details/4416209

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转载自hulefei29.iteye.com/blog/1832952