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using System.Collections;
using System.IO;
using Org.BouncyCastle.Utilities;
namespace Org.BouncyCastle.Bcpg.OpenPgp
{
public abstract class PgpKeyRing
: PgpObject
{
internal PgpKeyRing()
{
}
internal static TrustPacket ReadOptionalTrustPacket(
BcpgInputStream bcpgInput)
{
return (bcpgInput.NextPacketTag() == PacketTag.Trust)
? (TrustPacket)bcpgInput.ReadPacket()
: null;
}
internal static IList ReadSignaturesAndTrust(
BcpgInputStream bcpgInput)
{
try
{
IList sigList = Platform.CreateArrayList();
while (bcpgInput.NextPacketTag() == PacketTag.Signature)
{
SignaturePacket signaturePacket = (SignaturePacket) bcpgInput.ReadPacket();
TrustPacket trustPacket = ReadOptionalTrustPacket(bcpgInput);
sigList.Add(new PgpSignature(signaturePacket, trustPacket));
}
return sigList;
}
catch (PgpException e)
{
throw new IOException("can't create signature object: " + e.Message, e);
}
}
internal static void ReadUserIDs(
BcpgInputStream bcpgInput,
out IList ids,
out IList idTrusts,
out IList idSigs)
{
ids = Platform.CreateArrayList();
idTrusts = Platform.CreateArrayList();
idSigs = Platform.CreateArrayList();
while (bcpgInput.NextPacketTag() == PacketTag.UserId
|| bcpgInput.NextPacketTag() == PacketTag.UserAttribute)
{
Packet obj = bcpgInput.ReadPacket();
if (obj is UserIdPacket)
{
UserIdPacket id = (UserIdPacket)obj;
ids.Add(id.GetId());
}
else
{
UserAttributePacket user = (UserAttributePacket) obj;
ids.Add(new PgpUserAttributeSubpacketVector(user.GetSubpackets()));
}
idTrusts.Add(
ReadOptionalTrustPacket(bcpgInput));
idSigs.Add(
ReadSignaturesAndTrust(bcpgInput));
}
}
}
}
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