Exemple #1
0
        public BlindingFactor Blind_sum(BlindSum blindSum)
        {
            var posKeys = blindSum.PositiveKeyIds.Select(Derived_key).ToList();
            var negKeys = blindSum.NegativeKeyIds.Select(Derived_key).ToList();

            posKeys.AddRange(blindSum.PositiveBlindingFactors.Select(pbf => pbf.Key));
            negKeys.AddRange(blindSum.NegativeBlindingFactors.Select(nbf => nbf.Key));

            var blinding = Secp.blind_sum(posKeys.ToArray(), negKeys.ToArray());

            return(BlindingFactor.New(blinding));
        }
Exemple #2
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        /// Builds a new transaction by combining all the combinators provided in a
        /// Vector. Transactions can either be built "from scratch" with a list of
        /// inputs or outputs or from a pre-existing transaction that gets added to.
        ///
        /// Example:
        /// let (tx1, sum) = build::transaction(vec![input_rand(4), output_rand(1),
        /// with_fee(1)], keychain).unwrap();
        /// let (tx2, _) = build::transaction(vec![initial_tx(tx1), with_excess(sum),
        /// output_rand(2)], keychain).unwrap();
        public static (Transaction.Transaction transaction, BlindingFactor blindingFactor) Transaction(Func <Context, Append>[] elems, Keychain keychain)

        {
            var tx  = Core.Transaction.Transaction.Empty();
            var sum = BlindSum.New();
            var ctx = new Context(keychain, tx, sum);

            foreach (var elem in elems)
            {
                var append = elem(ctx);
                tx  = ctx.Tx = append.Transaction.Clone();
                sum = ctx.Sum = append.Blind;
            }

            var blindSum = ctx.Keychain.Blind_sum(sum);
            var msg      = Message.from_slice(TransactionHelper.kernel_sig_msg(tx.Fee, tx.LockHeight));
            var sig      = ctx.Keychain.Sign_with_blinding(msg, blindSum);

            tx.ExcessSig = sig.serialize_der(ctx.Keychain.Secp);

            return(tx, blindSum);
        }
Exemple #3
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 public Context(Keychain keychain, Transaction.Transaction tx, BlindSum sum)
 {
     Keychain = keychain;
     Tx       = tx;
     Sum      = sum;
 }
Exemple #4
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 public Append(Transaction.Transaction transaction, BlindSum blind)
 {
     Transaction = transaction;
     Blind       = blind;
 }