public bool Verify(PgpKey publicKey, Stream stream, bool ignoreTrailingWhitespace = false)
{
var helper = new PgpSignatureTransformation(SignatureType, HashAlgorithm, ignoreTrailingWhitespace);
new CryptoStream(stream, helper, CryptoStreamMode.Read).CopyTo(Stream.Null);
helper.Finish(sigPck.Version, sigPck.KeyAlgorithm, sigPck.CreationTime, sigPck.GetHashedSubPackets());
return(publicKey.Verify(helper.Hash !, sigPck.GetSignature(), helper.HashAlgorithm));
}
/// <summary>Return a signature object containing the current signature state.</summary>
internal SignaturePacket Generate()
{
DateTime creationTime = DateTime.UtcNow;
if (version >= 4)
{
if (!HashedAttributes.SignatureCreationTime.HasValue)
{
HashedAttributes.SetSignatureCreationTime(false, creationTime);
}
else
{
creationTime = HashedAttributes.SignatureCreationTime.Value;
}
if (!HashedAttributes.IssuerKeyId.HasValue &&
!UnhashedAttributes.IssuerKeyId.HasValue)
{
UnhashedAttributes.SetIssuerKeyId(false, privateKey.KeyId);
}
}
var hashedPackets = hashedAttributes == null?Array.Empty <SignatureSubpacket>() : hashedAttributes.ToSubpacketArray();
helper.Finish(
version,
privateKey.Algorithm,
creationTime,
hashedPackets);
var signature = privateKey.Sign(helper.Hash !, helper.HashAlgorithm);
return(new SignaturePacket(
version, helper.SignatureType, privateKey.KeyId, privateKey.Algorithm,
hashAlgorithm, creationTime,
hashedPackets,
unhashedAttributes == null ? Array.Empty <SignatureSubpacket>() : unhashedAttributes.ToSubpacketArray(),
helper.Hash.AsSpan(0, 2).ToArray(), signature));
}