public void DeriveKey_CreateCommonKeyAndEncryptString_Pass()
{
ECDiffieHellmanAgreement agreement;
byte[] commonKey;
byte[] iv;
string messageFromBob = "Hello my friend, how are you?";
string encrypted;
string decrypted;
using(var alice = new ECDiffieHellmanCipher<ECDiffieHellmanCng>())
{
agreement = alice.Agreement;
using(var bob = new ECDiffieHellmanCipher<ECDiffieHellmanCng>(agreement))
{
commonKey = alice.DeriveKey(bob.PublicKey);
using (var cipher = new SymmetricCipher<AesManaged>(commonKey, out iv))
encrypted = cipher.EncryptToString(messageFromBob);
}
using (var cipher = new SymmetricCipher<AesManaged>(commonKey, iv))
decrypted = cipher.DecryptToString(encrypted);
}
Assert.AreEqual(messageFromBob, decrypted);
}
public void DeriveKey_CompareCommonKey_Pass()
{
ECDiffieHellmanAgreement agreement;
byte[] aliceKey;
byte[] bobKey;
using (var alice = new ECDiffieHellmanCipher<ECDiffieHellmanCng>())
{
agreement = alice.Agreement;
using (var bob = new ECDiffieHellmanCipher<ECDiffieHellmanCng>(agreement))
{
aliceKey = alice.DeriveKey(bob.PublicKey);
bobKey = bob.DeriveKey(alice.PublicKey);
}
}
CollectionAssert.AreEqual(aliceKey, bobKey);
}
