aes

I need to implement AES 256 encryption /decryption and I haven't been able to find an example that works correctly. MSDN suggests that I should use the AES class. The Rijndael class is the predecessor of the Aes algorithm. You should use the Aes algorithm instead of Rijndael. For more information, see the entry The Differences Between Rijndael and AES in the .NET Security blog. Could anyone point me in the direction of a good example using the AES class for AES256? To add a little more clarity: I have a cipher file that contains the shared key and a string of encrypted text. I need to decrypt

.Net Code : public string AESEncrypt(string clearText,string key) { string EncryptionKey = key; // "MAKV2SPBNI99212"; byte[] clearBytes = Encoding.Unicode.GetBytes(clearText); using (Aes encryptor = Aes.Create()) { int iterations = 1024; Rfc2898DeriveBytes pdb = new Rfc2898DeriveBytes(EncryptionKey, new byte[] { 0x49, 0x76, 0x61, 0x6e, 0x20, 0x4d, 0x65, 0x64, 0x76, 0x65, 0x64, 0x65, 0x76 }, iterations); encryptor.Key = pdb.GetBytes(32); encryptor.IV = pdb.GetBytes(16); using (MemoryStream ms = new MemoryStream()) { using (CryptoStream cs = new CryptoStream(ms, encryptor.CreateEncryptor(),

mysql 中使用AES加密与解密处理数据 最近在做项目的时候，需要对一个敏感信息进行加密，但是加密密文又需要可以逆转，因为mysql支持AES,因此选择AES,用法比较简单，如下: -- AES加密，加密得到的是二进制 SELECT AES_ENCRYPT('123456','sdfsdfd'); -- AES加密后进行二进制转成16进制 SELECT HEX(AES_ENCRYPT('123456','sdfsdfd')); -- AES解密 SELECT AES_DECRYPT(AES_ENCRYPT('123456','sdfsdfd') ,'sdfsdfd'); -- AES加密后进行转成16进制，再转二进制进行解密 SELECT AES_DECRYPT(UNHEX(HEX(AES_ENCRYPT('123456','sdfsdfd'))),'sdfsdfd'); -- AES解密16进制 SELECT AES_DECRYPT(UNHEX('2CB8717652447287132E874E710976CC'),'sdfsdfd') ; 来源： https://my.oschina.net/u/3339803/blog/3110313

Currently I am working in generating a key for AES encryption/decryption. The key is based on a password an a random salt per user. My first idea was to made a SecretKeyFactory with the algorithm "PBKDF2WithHmacSHA1". The problem is that Android currently does not support it. Doing some search I found the answer from erickson recommended the use of that algorithm for the same purpose ( AES 256 bit encryption ). My question is how diffent would be the encryption process if I use "PBEWITHSHA256AND256BITAES-CBC-BC" instead of having "PBKDF2WithHmacSHA1"? There are any other idea of how to

We are using this code to encrypt in Objective-C on the iPhone: - (NSMutableData*) EncryptAES: (NSString *) key { char keyPtr[kCCKeySizeAES128+1]; bzero( keyPtr, sizeof(keyPtr) ); [key getCString: keyPtr maxLength: sizeof(keyPtr) encoding: NSUTF8StringEncoding]; size_t numBytesEncrypted = 0; NSUInteger dataLength = [self length]; size_t bufferSize = dataLength + kCCBlockSizeAES128; void *buffer = malloc(bufferSize); NSMutableData *output = [[NSData alloc] init]; CCCryptorStatus result = CCCrypt( kCCEncrypt, kCCAlgorithmAES128, kCCOptionPKCS7Padding, keyPtr, kCCKeySizeAES128, NULL, [self

Is there a standard library to use for AES encryption for VB.NET? I want to encrypt a string with a static private key. I googled and found a lot of variations. I don't really know how to determine which algorithms are secure or not. The System.Security.Cryptography namespace contains all the classes you need to perform most standard encryption tasks. Unfortunately, since encryption is a rather complicated topic, the classes are somewhat difficult to work with--especially for beginners. It's sometimes difficult to find a simple working example to start with. But, since I'm nice, I'll provide

I got on this post a couple of weeks ago and worked perfectly: Compatible AES algorithm for Java and Javascript Now, I need to do the reverse operation, but once in java, I am getting this exception: javax.crypto.BadPaddingException: Given final block not properly padded at com.sun.crypto.provider.CipherCore.doFinal(CipherCore.java:966) at com.sun.crypto.provider.CipherCore.doFinal(CipherCore.java:824) at com.sun.crypto.provider.AESCipher.engineDoFinal(AESCipher.java:436) at javax.crypto.Cipher.doFinal(Cipher.java:2165) This is my "reverse" operation I did in JavaScript: var rkEncryptionKey =

I am trying to encrypt in Javascript with CryptoJS and decrypt in PHP. The JS code is: var salt = CryptoJS.lib.WordArray.random(128/8); var key256Bits500Iterations = CryptoJS.PBKDF2("Secret Passphrase", salt, { keySize: 256/32, iterations: 500 }); var iv = CryptoJS.enc.Hex.parse('101112131415161718191a1b1c1d1e1f'); // just chosen for an example, usually random as well encrypted = CryptoJS.AES.encrypt("Message", key512Bits1000Iterations, { iv: iv }); var data_base64 = crypted.ciphertext.toString(CryptoJS.enc.Base64); var iv_base64 = crypted.iv.toString(CryptoJS.enc.Base64); var key_base64 =

Interesting paper from Trinity College of Dublin: AES Encryption Implementation and Analysis on Commodity Graphics Processing Units Their technique uses openGL to enlist the GPU to do the numeric transforms required by AES. How difficult would it be to expose this capability - performing stream encryption - via a managed .NET library? How would I get started? Hints? Examples? EDIT : Anyone have experiences to relate using CUDA or Accelerator? You could use Microsoft's Accelerator library. It gives you access to the GPU through .NET. After looking into the work required more, this is a pretty