aes

i have this on my php code: $iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB); $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND); $key = "bla"; $text = json_encode($rows); $crypttext = mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $key, $text, MCRYPT_MODE_ECB, $iv) print base64_encode($crypttext); and this one the iphone: NSString *response = [NSString stringWithContentsOfURL:[NSURL URLWithString:@"http://www.bla.com/myinfo.php"] encoding:NSUTF8StringEncoding error:&error]; response = [[NSData base64DataFromString:response] AESDecryptWithPassphrase:@"bla"]; response = [[[NSString alloc]

最近在开发小程序，需要跟微信服务端交互，微信敏感数据都有加密返回，需要在服务端接收进行解密后再返回给客户端小程序，今天就通过C# 进行数据的解密，官方下载下来是Node、C++、php等，就是没有C# 代码，于是就上度娘，找到 https://blog.csdn.net/jasonsong2008/article/details/83586119 https://www.cnblogs.com/jetz/p/6384809.html 经过一番研究，搞定啦，其实就是用了aes加密方法。 下面把第一篇博文进行整理 如果你使用的Java，请访问这个地址（Java版本） https://blog.csdn.net/jasonsong2008/article/details/83588666 我们先来看一下微信官方的说明文档，以下直接文档来自微信小程序官方： 加密数据解密算法 接口如果涉及敏感数据（如wx.getUserInfo当中的 openId 和 unionId），接口的明文内容将不包含这些敏感数据。开发者如需要获取敏感数据，需要对接口返回的加密数据(encryptedData) 进行对称解密。 解密算法如下： 对称解密使用的算法为 AES-128-CBC，数据采用PKCS#7填充。 对称解密的目标密文为 Base64_Decode(encryptedData)。 对称解密秘钥

I have to encrypt and decrypt data in AES CTS mode (ciphertext stealing, sometimes referred as AES-XTS) in PHP to interoperate with a remote system written in .NET platform. In .NET 4, this mode is supported natively . For PHP, I cannot find a solution, based on the manual, mcrypt does not seem to have support for this mode. Could anyone please explain the difference between plain CBC and CBC-CTS? Is it possible to make the latter work in PHP with using existing modules/libraries? This is the steps from the wikipedia article interjected with my comments explaining the LDn = Decrypt (K, Cn−1).

I feel I have a pretty good understanding of hash functions and the contracts they entail. SHA1 on Input X will ALWAYS produce the same output. You could use a Python library, a Java library, or pen and paper. It's a function, it is deterministic. My SHA1 does the same as yours and Alice's and Bob's. As I understand it, AES is also a function. You put in some values, it spits out the ciphertext. Why, then, could there ever be fears that Truecrypt (for instance) is "broken"? They're not saying AES is broken, they're saying the program that implements it may be. AES is, in theory, solid. So why

#AesEncrypt：Aes加密/解密示例项目 <br> 　　附件中的“AesEncrypt.zip”是本项目的exe文件，可直接下载下来运行和查看。 　　 *高级加密标准（英语：Advanced Encryption Standard，缩写：AES），在密码学中又称Rijndael加密法，是美国联邦政府采用的一种区块加密标准。这个标准用来替代原先的DES，已经被多方分析且广为全世界所使用。经过五年的甄选流程，高级加密标准由美国国家标准与技术研究院（NIST）于2001年11月26日发布于FIPS PUB 197，并在2002年5月26日成为有效的标准。2006年，高级加密标准已然成为对称密钥加密中最流行的算法之一。* <br> 　　好的百科已普及，现在来看看这Aes怎么使用，由于需要把加密后的byte[]输出成字符串，但是普通字符串无法兼容，所以这里使用的base64字符串。详见代码AesEncrypt\AesEncrypt.cs。<br> 　　为了直观的看到Aes的加解密过程，现在给出几个示例，如下图<br> 　　1.在“未加密”的文本框中输入一个普通的字符串，点击“加密”按钮，将在”已加密“的文本框中得到一个Aes加密后的base64字符串。 **这个“已加密”的base64字符串就可以放到系统中使用了，例如可以填到数据库链接字符串，也可以存储得到数据中。** <br> 　

I am currently using AesManaged class in C# to encrypt a plain text. It works fine. However, it produces the same cipher text each time it encrypts same piece of data. Is there anyway I can tweak this behavior and produce different cipher text for same piece of data? I have implemented encryption in SQL server using AES_256 algorithm and certificate. The process closely resembles with the post here: http://www.codeproject.com/Articles/662187/FIPS-Encryption-Algorithms-and-Implementation-of-A . In this process each time a plain text is encrypted, different cipher text is produced. I want the

I have a situation where I must store a password, as I am building a system to connect to another system. This other system only allows for a single user account, and the only way to connect to it is via a password. A hash is not appropriate here. I must store the password in a way that I can retrieve it. Now, with the knowledge that this is not a perfect system, I am trying to limit damage should someone get access to the database somehow. As this database will need to be used by varying platforms, I have decided to use MySQL's own built-in encryption functions. This way, I don't need to

I am trying to port a decryption routine from C# program to C++ using cryptopp, but I have a problem. In the C# program, the key and IV are both 256 bits. So I tried to do something like this: char *hash1 = "......"; std::string hash2; CryptoPP::StringSource(hash1, true,new CryptoPP::Base64Decoder(new CryptoPP::StringSink(hash2))); CryptoPP::Rijndael::Decryption decryptor(key, 32); CryptoPP::CBC_Mode_ExternalCipher::Decryption cbcDecryption( decryptor, iv); CryptoPP::StreamTransformationFilter stfDecryptor(cbcDecryption, (new CryptoPP::StringSink( decryptedData ) )); stfDecryptor.Put(