Exemple #1
0
        public static StealthPayment[] GetPayments(Transaction transaction, PubKey[] spendKeys, BitField bitField, Key scan)
        {
            List<StealthPayment> result = new List<StealthPayment>();
            for(int i = 0 ; i < transaction.Outputs.Count ; i++)
            {
                var metadata = StealthMetadata.TryParse(transaction.Outputs[i].ScriptPubKey);
                if(metadata != null && bitField.Match(metadata.BitField))
                {
                    var payment = new StealthPayment(transaction.Outputs[i + 1].ScriptPubKey, metadata);
                    if(scan != null && spendKeys != null)
                    {
                        if(payment.StealthKeys.Length != spendKeys.Length)
                            continue;

                        var expectedStealth = spendKeys.Select(s => s.UncoverReceiver(scan, metadata.EphemKey)).ToList();
                        foreach(var stealth in payment.StealthKeys)
                        {
                            var match = expectedStealth.FirstOrDefault(expected => expected.ID == stealth.ID);
                            if(match != null)
                                expectedStealth.Remove(match);
                        }
                        if(expectedStealth.Count != 0)
                            continue;
                    }
                    result.Add(payment);
                }
            }
            return result.ToArray();
        }
Exemple #2
0
 public static StealthMetadata CreateMetadata(Key ephemKey, BitField bitField = null)
 {
     for(uint nonce = 0 ; nonce < uint.MaxValue ; nonce++)
     {
         var metadata = new StealthMetadata(ephemKey, nonce);
         if(bitField == null || bitField.Match(metadata.BitField))
             return metadata;
     }
     throw new ArgumentException("No nonce can satisfy the given bitfield, use another ephemKey");
 }
 public BitcoinStealthAddress(PubKey scanKey, PubKey[] pubKeys, int signatureCount, BitField bitfield, Network network)
     : base(GenerateBytes(scanKey, pubKeys, bitfield, signatureCount), network)
 {
 }
 private static byte[] GenerateBytes(PubKey scanKey, PubKey[] pubKeys, BitField bitField, int signatureCount)
 {
     MemoryStream ms = new MemoryStream();
     ms.WriteByte(0); //Options
     ms.Write(scanKey.Compress().ToBytes(), 0, 33);
     ms.WriteByte((byte)pubKeys.Length);
     foreach(var key in pubKeys)
     {
         ms.Write(key.Compress().ToBytes(), 0, 33);
     }
     ms.WriteByte((byte)signatureCount);
     if(bitField == null)
         ms.Write(new byte[] { 0 }, 0, 1);
     else
     {
         ms.WriteByte((byte)bitField.BitCount);
         var raw = bitField.GetRawForm();
         ms.Write(raw, 0, raw.Length);
     }
     return ms.ToArray();
 }
 public BitcoinStealthAddress(PubKey scanKey, PubKey[] pubKeys, int signatureCount, BitField bitfield, Network network)
     : base(GenerateBytes(scanKey, pubKeys, bitfield, signatureCount), network)
 {
 }