static void Main(string[] args)
{
string text = "ABCD";
var ecParameters_Bob = CreateECParametersUtil.CreateECParameters(
"71:a7:11:fb:27:f6:cf:4a:e7:cf:60:5e:40:6f:5f:9d:c1:cb:f5:e5:82:2a:89:60:42:31:dc:ff:ba:41:a2:bb:51:e4:14:47:be:05:69:5e:dd:ce:d6:e9:75:88:c4:98:70:c9:42:cb:2b:da:64:8c:b5:f1:57:57:79:2b:b2:cc",
"68:12:bd:1c:1b:d9:32:02:42:6d:95:fc:ba:66:84:7a:b0:44:a1:d6:ba:f6:56:f9:a5:b1:5d:33:b7:d9:49:fd");
var ecParameters_Alice = CreateECParametersUtil.CreateECParameters(
"2ec4d77a79719da37f099ff3ab8caf150ab5979b80963bd21ad64bd42f4c28aa75fe19d01937a5e5529066474aa4100d169aa00f3ff9884bc74f6db39211dd74",
"79fc0797c5ad4d81c55e7c6983d1e05499ba4fd5276dea2003c090eb54915a1e");
using (var bob = new DiffieHellman())
{
using (var alice = new DiffieHellman(ecParameters_Alice))
{
Console.WriteLine($"\nEncrypt public key = \n{ByteArrayToHexString(alice.PublicKey, false)}\n");
// Bob uses Alice's public key to encrypt his message.
byte[] secretMessage = bob.Encrypt(alice.PublicKey, text);
var transmitMsg = Convert.ToBase64String(secretMessage);
var hexMsg = ByteArrayToHexString(secretMessage);
Console.WriteLine($"encrypted base64 = {transmitMsg}");
Console.WriteLine($"encrypted hexStr = {hexMsg}");
Console.ReadKey();
Console.WriteLine($"\nDecrypt PublicKey = \n{ByteArrayToHexString(bob.PublicKey, false)}\nDecrypt IV = \n{ByteArrayToHexString(bob.IV, false)}\n");
// Alice uses Bob's public key and IV to decrypt the secret message.
string decryptedMessage = alice.Decrypt(bob.PublicKey, Convert.FromBase64String(transmitMsg), bob.IV);
Console.WriteLine($"\nBase64 decrypted = {decryptedMessage}");
string hexDecryptedMessage = alice.Decrypt(bob.PublicKey, HexStringToByteArray(hexMsg), bob.IV);
Console.WriteLine($"\nHex decrypted = {hexDecryptedMessage}");
}
}
Console.ReadKey();
}
public static byte[] HexStringToByteArray(string hex)
{
return(CreateECParametersUtil.HexStringToByteArray(hex));
}