rijndaelmanaged

问题 We are trying to integrate with a legacy c# application that uses RijndaelManaged for symmetric encryption. However it appears that they have used a 13 byte string as an encryption key! The code is basically: var initVectorBytes = Encoding.ASCII.GetBytes("16-char string"); var keyBytes = Encoding.ASCII.GetBytes("13-char string"); var symmetricKey = new RijndaelManaged { Mode = CipherMode.CBC }; var decryptor = symmetricKey.CreateDecryptor(keyBytes, initVectorBytes); var memoryStream = new

问题 A file has been encrypted by Perl. Initial decrypt attempts failed and I am now trying to ascertain whether there is any hoojoo going on (some other settings required) Duff Perl Code: use strict; use Crypt::Rijndael; my $key ='...'; my $rcipher = Crypt::Rijndael->new ($key, Crypt::Rijndael::MODE_CBC()); undef $/; my $encrypted = <>; print $rcipher->decrypt($encrypted); C# Decryption Implementation CryptoStream decryptor = null; StreamReader srDecrypt = null; FileStream fsIn = null;

问题 I have a program in which I write and read configuration files. When I write, I encrypt the whole file using the RijndaelManaged object in vb.net, and when I read I decrypt using the same value for the key and init vector. It all work fine on my development machine and on many others. However, some PC can't encrypt/decrypt files using the same program. is there anything in this encryption object that prevent it and what would you recommend using instead ? Thanks Edit : here is the code I use

问题 I have the following code in C# string s = "hellowld"; byte[] bytes = new UnicodeEncoding().GetBytes(s); FileStream stream = new FileStream(inputFile, FileMode.Open); RijndaelManaged managed = new RijndaelManaged(); CryptoStream stream2 = new CryptoStream(stream, managed.CreateDecryptor(bytes, bytes), CryptoStreamMode.Read); FileStream stream3 = new FileStream(outputFile, FileMode.Create); try { int num; while ((num = stream2.ReadByte()) != -1) { stream3.WriteByte((byte) num); } [....] This

问题 static byte[] keyBytes = new byte[] { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 }; static byte[] iv = new byte[] { 1, 1, 1, 1 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 }; static SymmetricAlgorithm getKey() { RijndaelManaged key = new RijndaelManaged(); key.Key = keyBytes; key.IV = iv; return key; } static string Encrypt(string PlainText) { SymmetricAlgorithm key = getKey(); MemoryStream ms = new MemoryStream(); CryptoStream encStream = new

问题 Overview: I'm trying to design an application that will encrypt files to safely send through Snail Mail (LARGE sets of data). I'm planning on using AES/RijndaelManaged encryption from .Net to encrypt the files initially, using a randomly generated key using RNGCryptoServiceProvider . I'm then encrypting this random AES key with a RSA Public key. The receiver of the data is the only one with the RSA Private key to decrypt it. My question: Is this the proper way to do something like this? If so

问题 I feel like what I am trying to do is very simple. But for some reason it doesn't want to work: Here is a complete code snippet to test what I am trying to do: using System; using System.Xml; using System.Security.Cryptography; using System.Security.Cryptography.Xml; namespace XmlCryptographySendingTest { class Program { static void Main(string[] args) { string fullKeyContainer = "fullKeyContainer"; string publicKeyContainer = "publicKeyContainer"; //create the two providers

问题 Im currently developing a Silverlight application that connects to an old webservice. Our old webservice uses an encryption tool which silverlight does not support. Finally, we decided to used AesManaged for encryption, however, our webservice does not support AesManaged. Is their a way to decrypt an AesManaged to RijndaelManaged? If yes, can you please post a sample snippet? Your feedback is highly needed. Thank you. 回答1: As long as you make sure to set the blocksize of RijndaelManaged to

问题 I have almost lost my hair, mind and everything else! I have been trying to convert this PHP function to C#: function encrypt_decrypt($action, $string) { $output = false; $key = 'My strong secret key'; // initialization vector $iv = md5(md5($key)); $output = mcrypt_encrypt(MCRYPT_RIJNDAEL_256, md5($key), $string, MCRYPT_MODE_CBC, $iv); $output = bin2hex($output); return $output; } I have been working with Rijandel Class: function encrypt_decrypt(string password) { UTF8Encoding encoding = new

问题 I'm using Rijndael to encrypt some sensitive data in my program. When the user enters an incorrect password, most of the time a CryptographicException is thrown with the message "Padding is invalid and cannot be removed.". However, with very small probability, the CryptStream does not throw an exception with the wrong password, but instead gives back an incorrectly decrypted stream. In other words, it decrypts to garbage. Any idea how to detect/prevent this? The simplest way I can think of