public byte[] PerformKeyAgreement (ECKeyPair otherPublicKey, int keyDataLength)
{
if (otherPublicKey.Q == null) {
if (otherPublicKey.D == null)
throw new CryptographicException ();
otherPublicKey.CreatePublicKeyFromPrivateKey ();
}
return PerformKeyAgreement (otherPublicKey.Q, keyDataLength);
}
public byte[] PerformKeyAgreement(ECKeyPair otherPublicKey, int keyDataLength)
{
if (otherPublicKey.Q == null)
{
if (otherPublicKey.D == null)
{
throw new CryptographicException();
}
otherPublicKey.CreatePublicKeyFromPrivateKey();
}
return(PerformKeyAgreement(otherPublicKey.Q, keyDataLength));
}
public void Test_GEC2()
{
ECDomainNames domainName = ECDomainNames.secp160r1;
ECDomainParameters domain = ECDomains.GetDomainParameter(domainName);
ECIES ecies = new ECIES(domainName);
Number V_Private = Number.Parse("45FB58A92A17AD4B15101C66E74F277E2B460866", 16);
ECKeyPair pair = new ECKeyPair(V_Private, null, domain);
pair.CreatePublicKeyFromPrivateKey();
ecies.Parameters._Q = pair._Q;
byte[] M = System.Text.Encoding.ASCII.GetBytes("abcdefghijklmnopqrst");
byte[] k = Number.Parse("702232148019446860144825009548118511996283736794", 10).ToByteArray(20, false);
byte[] C = ecies.Encrypt(M, k);
byte[] expectedC = new byte[] { 0x02, 0xCE, 0x28, 0x73, 0xE5, 0xBE, 0x44, 0x95, 0x63, 0x39, 0x1F, 0xEB, 0x47, 0xDD, 0xCB, 0xA2, 0xDC, 0x16, 0x37, 0x91, 0x91, 0x71, 0x23, 0xC8, 0x70, 0xA3, 0x1A, 0x81, 0xEA, 0x75, 0x83, 0x29, 0x0D, 0x1B, 0xA1, 0x7B, 0xC8, 0x75, 0x94, 0x35, 0xED, 0x1C, 0xCD, 0xA9, 0xEB, 0x4E, 0xD2, 0x73, 0x60, 0xBE, 0x89, 0x67, 0x29, 0xAD, 0x18, 0x54, 0x93, 0x62, 0x25, 0x91, 0xE5 };
Assert.AreEqual(expectedC, C, "Encryption");
ecies = new ECIES(domainName);
ecies.Parameters._d = V_Private;
byte[] M2 = ecies.Decrypt(C);
Assert.AreEqual(M, M2, "Decryption");
}