I need two methods one to encrypt and one to decrypt an xml file with a key= 'hello world',the key hello world should be used to encrypt and decrypt the xml file.These methods should work on all machines!!! Any encryption methods will do. XML File contents below: 19834209 Can some give me a sample?The issue is the msdn sample encyptions make a xml file encypted but when I decrypt on another machine it doesn't work.For example I tried this sample:, but here there is some kinda session and on another machine it says bad data phewf! If you want the same key for encrypting and decrypting you should use a symmetric method (that's the definition, really).

I wana to encrypt a file in c# and Decrypt the c# encrypted file by java code in my. Encrypting file in C# and decrypt file in Android programming with aes. The 'strength' of using this comes from using the RijndaelManaged class to perform the encryption for you, along with using the Rfc2898DeriveBytes function of the System.Security. Sniper Games Without Graphics Card. Cryptography namespace which will generate your encryption key using a standard and secure algorithm (specifically, PBKDF2) based upon the string-based password you supply.

Here's the closest one to your sample (same source). The posted sample isn't working because they aren't using the same keys.

Not only on different machines: running the program on the same machine twice should not work either (didn't work for me), because they use different random keys every time. Try adding this code after creating your key: key = new RijndaelManaged(); string password = 'Password1234'; //password here byte[] saltBytes = Encoding.UTF8.GetBytes('Salt'); // salt here (another string) var p = new Rfc2898DeriveBytes(password, saltBytes); //TODO: think about number of iterations (third parameter) // sizes are devided by 8 because [ 1 byte = 8 bits ] key.IV = p.GetBytes(key.BlockSize / 8); key.Key = p.GetBytes(key.KeySize / 8); Now the program is using the same key and initial vector, and Encrypt and Decrypt should work on all machines. Also, consider renaming key to algorithm, otherwise this is very misleading. I'd say it's a bad, not-working-well example from MSDN. NOTE: PasswordDeriveBytes.GetBytes() has been deprecated because of serious (security) issues within the class.