rijndael

I'm trying to do a simple task. Encypt a value in PHP and Decrypt it in my VB.net app. I figure I'd use tripleDES or Rijdael 128 or 256 I though this should be simple. Can anyone point me in the right direction? Thank you We have some ciphers working between C# on .NET and PHP. I am not familiar with VB.net. I assume it uses the same crypto library System.Security.Cryptography . On PHP side, we switched from mcrypt to OpenSSL because some modes and paddings are not supported by mcrypt. As long as you use same algorithm (DES, AES etc), same mode (CBC, ECB etc), same padding (PKCS1, PKCS5), the

I'm playing around with an app to backup files to "the cloud" :) and I want to encrypt the files before I store them. That part I have covered, but as this app will be monitoring folders for change and uploading the changed files I need to store the key that I use to encrypt the files with. The idea is that the user provides a password and a key is generated. At the moment I'm using the .NET Framework to do the encryption. I'm using the RijndaelManaged class to encrypt/decrypt and the PasswordDeriveBytes class to get the key. But how should I keep the key that is used for encrypting the files?

I have used this guide to encrypt the value of txtCode.Text into a text file, which is then hidden - The value of the encrypted data is going to be used as the password for the database, so I need to read this value, decrypt it, then pass it into the connection string. However, in this guide, the decryption is done by typing in a value, creating a bytKey and bytIV and then comparing the result of encryption of the newl typed string with the value in the text file. Obviously I can't ask the user to enter the password every time the database needs to be opened, so how can I achieve decryption

for these 2 libraries, Delphi Encryption Compendium v 5.2 TurboPower Lockbox v 2.07 I tested their Rijndael DCB/CBC algorithm with "AES Known Answer Test (KAT) Vectors" obtained at NIST website ( http://csrc.nist.gov/groups/STM/cavp/index.html ) But, both of these libraries failed the tests. Not sure if it was my testing that has error, has anyone tested them before as well? I am looking for a Delphi Rijndael library that is able to pass the KAT Vectors test. Does anyone know of any such library? Are you sure it fails? The vectors are written as hex strings. Did you feed the hex strings as

I'm trying to encrypt and decrypt with the following functions, however, it results in a bad padding error. If I set PaddingMode to None it returns some alpha characters and random symbols in Log. I'm possibly missing something from setting the correct structure which is as follows: Cipher Rijndael (AES) Block Size 128 bits (16 bytes) Mode CBC (Cipher Block Chaining) Key MD5 hash passphrase IV Same as the key Data Encoding Base64 Character UTF-8 Encoding Any help fixing this error and any assistance with ensuring the above structure is met would be greatly appreciated! Thanks Error

Only part of the string is getting decrypted, i think it has to do with my encoding. Here is what happens: string s = "The brown fox jumped over the green frog"; string k = "urieurut"; string enc = EncryptString(s, k); string dec = DecryptString(enc, k); The RESULT is this: The brown fox juϼ㴘裴혽Ή⪻ㆉr th≸ g⟤een frog public static string EncryptString(string stringToEncrypt, string encryptionKey) { string encrypted = String.Empty; UnicodeEncoding UE = new UnicodeEncoding(); byte[] key = UE.GetBytes(encryptionKey); RijndaelManaged RMCrypto = new RijndaelManaged(); MemoryStream ms = new