public JPakePrimeOrderGroup(BigInteger p, BigInteger q, BigInteger g, bool skipChecks)
{
JPakeUtilities.ValidateNotNull(p, "p");
JPakeUtilities.ValidateNotNull(q, "q");
JPakeUtilities.ValidateNotNull(g, "g");
if (!skipChecks)
{
if (!p.Subtract(JPakeUtilities.One).Mod(q).Equals(JPakeUtilities.Zero))
{
throw new ArgumentException("p-1 must be evenly divisible by q");
}
if (g.CompareTo(BigInteger.Two) == -1 || g.CompareTo(p.Subtract(JPakeUtilities.One)) == 1)
{
throw new ArgumentException("g must be in [2, p-1]");
}
if (!g.ModPow(q, p).Equals(JPakeUtilities.One))
{
throw new ArgumentException("g^q mod p must equal 1");
}
if (!p.IsProbablePrime(20))
{
throw new ArgumentException("p must be prime");
}
if (!q.IsProbablePrime(20))
{
throw new ArgumentException("q must be prime");
}
}
this.p = p;
this.q = q;
this.g = g;
}
public JPakeRound2Payload(string participantId, BigInteger a, BigInteger[] knowledgeProofForX2s)
{
JPakeUtilities.ValidateNotNull(participantId, "participantId");
JPakeUtilities.ValidateNotNull(a, "a");
JPakeUtilities.ValidateNotNull(knowledgeProofForX2s, "knowledgeProofForX2s");
this.participantId = participantId;
this.a = a;
this.knowledgeProofForX2s = new BigInteger[knowledgeProofForX2s.Length];
knowledgeProofForX2s.CopyTo(this.knowledgeProofForX2s, 0);
}
public JPakeRound1Payload(string participantId, BigInteger gx1, BigInteger gx2, BigInteger[] knowledgeProofForX1, BigInteger[] knowledgeProofForX2)
{
JPakeUtilities.ValidateNotNull(participantId, "participantId");
JPakeUtilities.ValidateNotNull(gx1, "gx1");
JPakeUtilities.ValidateNotNull(gx2, "gx2");
JPakeUtilities.ValidateNotNull(knowledgeProofForX1, "knowledgeProofForX1");
JPakeUtilities.ValidateNotNull(knowledgeProofForX2, "knowledgeProofForX2");
this.participantId = participantId;
this.gx1 = gx1;
this.gx2 = gx2;
this.knowledgeProofForX1 = new BigInteger[knowledgeProofForX1.Length];
Array.Copy(knowledgeProofForX1, this.knowledgeProofForX1, knowledgeProofForX1.Length);
this.knowledgeProofForX2 = new BigInteger[knowledgeProofForX2.Length];
Array.Copy(knowledgeProofForX2, this.knowledgeProofForX2, knowledgeProofForX2.Length);
}
public void TestValidateNotNull()
{
JPakeUtilities.ValidateNotNull("a", "description");
try
{
JPakeUtilities.ValidateNotNull(null, "description");
Fail("failed to throw exception on null");
}
catch (ArgumentNullException)
{
// expected
}
}
public JPakeParticipant(string participantId, char[] password, JPakePrimeOrderGroup group, IDigest digest, SecureRandom random)
{
JPakeUtilities.ValidateNotNull(participantId, "participantId");
JPakeUtilities.ValidateNotNull(password, "password");
JPakeUtilities.ValidateNotNull(group, "p");
JPakeUtilities.ValidateNotNull(digest, "digest");
JPakeUtilities.ValidateNotNull(random, "random");
if (password.Length == 0)
{
throw new ArgumentException("Password must not be empty.");
}
this.participantId = participantId;
this.password = new char[password.Length];
Array.Copy(password, this.password, password.Length);
p = group.P;
q = group.Q;
g = group.G;
this.digest = digest;
this.random = random;
state = STATE_INITIALIZED;
}
