/// <summary>
/// Get sign parameter object.
/// </summary>
/// <param name="signaturehashType">sighash type</param>
/// <returns>sign parameter object.</returns>
public SignParameter GetSignData(SignatureHashType signaturehashType)
{
var sig = data;
var sigType = sighashType;
if ((data.Length == Size * 2) && (signaturehashType.SighashType != CfdSighashType.Default))
{
using (var handle = new ErrorHandle())
{
var ret = NativeMethods.CfdAddSighashTypeInSchnorrSignature(
handle.GetHandle(), data, signaturehashType.GetValue(),
signaturehashType.IsSighashAnyoneCanPay,
out IntPtr addedSignature);
if (ret != CfdErrorCode.Success)
{
handle.ThrowError(ret);
}
sig = CCommon.ConvertToString(addedSignature);
}
sigType = signaturehashType;
}
var signData = new SignParameter(sig);
signData.SetSignatureHashType(sigType);
return(signData);
}
/// <summary>
/// Calculate ec-signature.
/// </summary>
/// <param name="sighash">signature hash.</param>
/// <param name="hasGrindR">use grind-R.</param>
/// <returns></returns>
public SignParameter CalculateEcSignature(ByteData sighash, bool hasGrindR)
{
if (sighash is null)
{
throw new ArgumentNullException(nameof(sighash));
}
using (var handle = new ErrorHandle())
{
var ret = NativeMethods.CfdCalculateEcSignature(
handle.GetHandle(), sighash.ToHexString(),
privkey, privkeyWif, (int)networkType, hasGrindR,
out IntPtr signatureHex);
if (ret != CfdErrorCode.Success)
{
handle.ThrowError(ret);
}
SignParameter signature = new SignParameter(CCommon.ConvertToString(signatureHex));
SignatureHashType sighashType = new SignatureHashType(CfdSighashType.All, false);
signature.SetDerEncode(sighashType);
signature.SetRelatedPubkey(GetPubkey());
return(signature);
}
}
/// <summary>
/// decode from DER.
/// </summary>
/// <param name="derSignature">DER encoded data</param>
/// <returns>signature (SignParameter object)</returns>
public static SignParameter DecodeFromDer(ByteData derSignature)
{
if (derSignature is null)
{
throw new ArgumentNullException(nameof(derSignature));
}
using (var handle = new ErrorHandle())
{
var ret = NativeMethods.CfdDecodeSignatureFromDer(
handle.GetHandle(), derSignature.ToHexString(),
out IntPtr signature,
out int signatureHashType,
out bool _);
if (ret != CfdErrorCode.Success)
{
handle.ThrowError(ret);
}
string signatureStr = CCommon.ConvertToString(signature);
SignatureHashType sighashType = new SignatureHashType(signatureHashType);
SignParameter signParam = new SignParameter(signatureStr);
signParam.SetDerEncode(sighashType);
return(signParam);
}
}
