92 lines
2.0 KiB
C#
92 lines
2.0 KiB
C#
using System;
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using System.IO;
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namespace Org.BouncyCastle.Bcpg
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{
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/**
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* Basic type for a symmetric encrypted session key packet
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*/
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public class SymmetricKeyEncSessionPacket
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: ContainedPacket
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{
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private int version;
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private SymmetricKeyAlgorithmTag encAlgorithm;
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private S2k s2k;
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private readonly byte[] secKeyData;
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public SymmetricKeyEncSessionPacket(
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BcpgInputStream bcpgIn)
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{
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version = bcpgIn.ReadByte();
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encAlgorithm = (SymmetricKeyAlgorithmTag) bcpgIn.ReadByte();
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s2k = new S2k(bcpgIn);
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secKeyData = bcpgIn.ReadAll();
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}
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public SymmetricKeyEncSessionPacket(
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SymmetricKeyAlgorithmTag encAlgorithm,
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S2k s2k,
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byte[] secKeyData)
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{
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this.version = 4;
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this.encAlgorithm = encAlgorithm;
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this.s2k = s2k;
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this.secKeyData = secKeyData;
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}
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/**
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* @return int
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*/
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public SymmetricKeyAlgorithmTag EncAlgorithm
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{
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get { return encAlgorithm; }
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}
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/**
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* @return S2k
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*/
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public S2k S2k
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{
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get { return s2k; }
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}
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/**
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* @return byte[]
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*/
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public byte[] GetSecKeyData()
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{
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return secKeyData;
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}
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/**
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* @return int
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*/
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public int Version
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{
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get { return version; }
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}
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public override void Encode(
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BcpgOutputStream bcpgOut)
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{
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MemoryStream bOut = new MemoryStream();
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BcpgOutputStream pOut = new BcpgOutputStream(bOut);
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pOut.Write(
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(byte) version,
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(byte) encAlgorithm);
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pOut.WriteObject(s2k);
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if (secKeyData != null && secKeyData.Length > 0)
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{
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pOut.Write(secKeyData);
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}
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bcpgOut.WritePacket(PacketTag.SymmetricKeyEncryptedSessionKey, bOut.ToArray(), true);
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}
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}
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}
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