示例#1
0

        
示例#2
0
        public async Task OnLogonProof(AuthLogonProof proof)
        {
            BigInteger A  = new BigInteger(proof.A);
            BigInteger M1 = new BigInteger(proof.M1);

            if (A == 0 || M1 == 0) //possible hack attempt
            {
                await SendAuthError(AuthError.NoAccount);

                return;
            }

            BigInteger u = BigInt.Hash(A, B);

            BigInteger tmp = v.ModPow(u, N);

            if (tmp < 0)
            {
                tmp += N;
            }
            BigInteger S = A * tmp;

            S = S.ModPow(b, N);
            if (S < 0)
            {
                S += N;
            }

            byte[] t = S.GetBytes();

            //byte[] t = new byte[32];
            byte[] t1 = new byte[16];
            byte[] t2 = new byte[16];
            byte[] vK = new byte[40];

            for (int i = 0; i < 16; ++i)
            {
                t1[i] = t[i * 2];
                t2[i] = t[(i * 2) + 1];
            }

            var t1sha = BigInt.Hash(t1);
            var t2sha = BigInt.Hash(t2);

            var t1shabytes = t1sha.GetBytes(20);
            var t2shabytes = t2sha.GetBytes(20);

            for (int i = 0; i < 20; ++i)
            {
                vK[i * 2]       = t1shabytes[i];
                vK[(i * 2) + 1] = t2shabytes[i];
            }

            var t3 = BigInt.Hash(N) ^ BigInt.Hash(g);

            var AccountName = Account.GetPrimaryKeyString().ToUpper();

            var t4bytes = Encoding.UTF8.GetBytes(AccountName);
            var t4      = BigInt.Hash(t4bytes);

            t4bytes = t4.GetBytes();

            SessionKey = new BigInteger(vK);

            var M = BigInt.Hash(t3, t4, s, A, B, SessionKey);

            //do we match the M sent by the client?
            if (M == M1)
            {
                Authed = true;

                // The account code will disconnect any other attached auth or realm sessions when we add an auth session to it
                await Account.AddSession(this);

                BigInteger M2 = BigInt.Hash(A, M, SessionKey);

                PacketOut p = new PacketOut(AuthOp.AUTH_LOGON_PROOF);
                p.Write((byte)AuthError.Success);
                p.WriteBigInt(M2, 20);
                p.Write((int)0);
                p.Write((int)0);
                p.Write((short)0);

                await SendPacket(p);
            }
            else
            {
                await SendAuthError(AuthError.NoAccount);
            }
        }