public static ProofInfo range_proof_info(this Secp256K1 self, RangeProof proof)
{
var exp = 0;
var mantissa = 0;
ulong min = 0;
ulong max = 0;
var extraCommit = new byte [33];
var success = Proxy.secp256k1_rangeproof_info(
self.Ctx,
ref exp,
ref mantissa,
ref min,
ref max,
proof.Proof,
proof.Plen,
extraCommit,
0,
Constants.Constants.GeneratorH
) == 1;
return(new
ProofInfo
{
Success = success,
Value = 0,
Message = ProofMessage.Empty(),
Mlen = 0,
Min = min,
Max = max,
Exp = exp,
Mantissa = mantissa
});
}
public static ProofInfo rewind_range_proof(this Secp256K1 self, Commitment commit, RangeProof proof,
SecretKey nonce)
{
ulong value = 0;
var blind = new byte[32];
var message = new byte[Constants.Constants.ProofMsgSize];
var mlen = (ulong)Constants.Constants.ProofMsgSize;
ulong min = 0;
ulong max = 0;
var extraCommit = new byte[33];
var success = Proxy.secp256k1_rangeproof_rewind(
self.Ctx,
blind,
ref value,
message,
ref mlen,
nonce.Value,
ref min,
ref max,
commit.Value,
proof.Proof,
proof.Plen,
extraCommit,
0,
Constants.Constants.GeneratorH
) == 1;
return(new ProofInfo
{
Success = success,
Value = value,
Message = ProofMessage.from_bytes(message),
Mlen = (int)mlen,
Min = min,
Max = max,
Exp = 0,
Mantissa = 0
});
}
public static ProofRange verify_range_proof(this Secp256K1 self, Commitment commit, RangeProof proof)
{
ulong min = 0;
ulong max = 0;
var extraCommit = ByteUtil.Get_bytes(0, 33);
var success =
Proxy.secp256k1_rangeproof_verify(
self.Ctx,
ref min,
ref max,
commit.Value,
proof.Proof,
proof.Plen,
extraCommit,
0,
Constants.Constants.GeneratorH
) == 1;
if (success)
{
return new ProofRange
{
Min = min,
Max = max
}
}
;
throw new Exception("InvalidRangeProof");
}