static void TestSharing()
{
Console.WriteLine("TestSharing");
int k = 5;
SecretKey[] msk = new SecretKey[k];
PublicKey[] mpk = new PublicKey[k];
// make master secretkey
for (int i = 0; i < k; i++)
{
msk[i].SetByCSPRNG();
mpk[i] = msk[i].GetPublicKey();
}
int n = 30;
Id[] ids = new Id[n];
SecretKey[] secs = new SecretKey[n];
PublicKey[] pubs = new PublicKey[n];
for (int i = 0; i < n; i++)
{
ids[i].SetInt(i * i + 123);
secs[i] = ShareSecretKey(msk, ids[i]);
pubs[i] = SharePublicKey(mpk, ids[i]);
assert("share publicKey", secs[i].GetPublicKey().IsEqual(pubs[i]));
}
string m = "doremi";
for (int i = 0; i < n; i++)
{
Signature Signature = secs[i].Signature(m);
assert("Signature.Verify", pubs[i].Verify(Signature, m));
}
{
int[] idxTbl = { 0, 2, 5, 8, 10 };
assert("idxTbl.Length=k", idxTbl.Length == k);
Id[] subIds = new Id[k];
SecretKey[] subSecs = new SecretKey[k];
PublicKey[] subPubs = new PublicKey[k];
Signature[] subSigns = new Signature[k];
for (int i = 0; i < k; i++)
{
int idx = idxTbl[i];
subIds[i] = ids[idx];
subSecs[i] = secs[idx];
subPubs[i] = pubs[idx];
subSigns[i] = secs[idx].Signature(m);
}
SecretKey sec = RecoverSecretKey(subSecs, subIds);
PublicKey pub = RecoverPublicKey(subPubs, subIds);
assert("check pub", pub.IsEqual(sec.GetPublicKey()));
Signature Signature = RecoverSign(subSigns, subIds);
assert("Signature.verify", pub.Verify(Signature, m));
}
}
public void DiffieHellmanImpl_Success_Test()
{
var alicePrivate = new SecretKey();
var alicePublic = alicePrivate.GetPublicKey();
var bobPrivate = new SecretKey();
var bobPublic = bobPrivate.GetPublicKey();
var aliceShared = alicePrivate.GetSharedSecretKey(peerPublicKey: bobPublic);
var bobShared = bobPrivate.GetSharedSecretKey(peerPublicKey: alicePublic);
Assert.IsTrue(aliceShared.KeyValue.SequenceEqual(bobShared.KeyValue));
}
static void TestSign()
{
Console.WriteLine("TestSign");
SecretKey sec = new SecretKey();
sec.SetByCSPRNG();
PublicKey pub = sec.GetPublicKey();
String m = "abc";
Signature sig = sec.Signature(m);
assert("verify", pub.Verify(sig, m));
assert("not verify", !pub.Verify(sig, m + "a"));
}
public void DiffieHellmanImpl_Fail_Test()
{
var alicePrivate = new SecretKey();
var alicePublic = alicePrivate.GetPublicKey();
var bobPrivate = new SecretKey();
var bobPublic = bobPrivate.GetPublicKey();
alicePublic.KeyValue = alicePublic.KeyValue.ToggleBitInKey();
var aliceShared = alicePrivate.GetSharedSecretKey(peerPublicKey: bobPublic);
var bobShared = bobPrivate.GetSharedSecretKey(peerPublicKey: alicePublic);
Assert.IsFalse(aliceShared.KeyValue.SequenceEqual(bobShared.KeyValue));
}
static void TestPublicKey()
{
Console.WriteLine("TestPublicKey");
SecretKey sec = new SecretKey();
sec.SetByCSPRNG();
PublicKey pub = sec.GetPublicKey();
String s = pub.GetHexStr();
Console.WriteLine("pub={0}", s);
PublicKey pub2 = new PublicKey();
pub2.SetStr(s);
assert("pub.SetStr", pub.IsEqual(pub2));
}
