Beispiel #1
0
        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);
        }
Beispiel #2
0
        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);
        }