数据加密 base64

一.添加GTMBase64.h  ,GTMBase64.m和GTMDefines.h 到工程目录下(这个网站上找找都有) 下面链接个网址 呵呵

http://www.jguoer.com/blog/wp-content/uploads/2010/1/base64.zip

二.在自己的类中实现下面的方法  就可以实现加密和解密了

//加密

-(NSString *) encryptData:(NSString *) strData

{

   NSData *data = [strDatadataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:YES];

   data = [GTMBase64 encodeData:data];

   NSString *accountStr =[[NSString alloc] initWithData: data encoding: NSUTF8StringEncoding];

   

   NSLog(@"encryptData ========== %@ \n",accountStr);

   

   returnaccountStr;

   

}

 

//解密

-(NSString *) decryptData:(NSString *) strData

{

   NSData *data = [strDatadataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:YES];

   data = [GTMBase64 decodeData:data];

   NSString *accountStr =[[NSString alloc] initWithData: data encoding: NSUTF8StringEncoding];

   

   NSLog(@"decryptData ========== %@ \n",accountStr);

   

   returnaccountStr;

}