public byte[] DecryptData(EncryptedPacket encryptedPacket, RSAWithRSAParameterKey rsaParams) { // Decrypt AES Key with RSA. var decryptedSessionKey = rsaParams.DecryptData(encryptedPacket.EncryptedSessionKey); // Decrypt our data with AES using the decrypted session key. var decryptedData = _aes.Decrypt(encryptedPacket.EncryptedData, decryptedSessionKey, encryptedPacket.Iv); return(decryptedData); }
public EncryptedPacket EncryptData(byte[] original, RSAWithRSAParameterKey rsaParams) { // Generate our session key. var sessionKey = _aes.GenerateRandomNumber(32); // Create the encrypted packet and generate the IV. var encryptedPacket = new EncryptedPacket { Iv = _aes.GenerateRandomNumber(16) }; // Encrypt our data with AES. encryptedPacket.EncryptedData = _aes.Encrypt(original, sessionKey, encryptedPacket.Iv); // Encrypt the session key with RSA encryptedPacket.EncryptedSessionKey = rsaParams.EncryptData(sessionKey); return(encryptedPacket); }