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using System;
using System.Collections;
using Org.BouncyCastle.Security;
using Org.BouncyCastle.Utilities;
namespace Org.BouncyCastle.Bcpg.OpenPgp
{
/// <remarks>
/// Generator for a PGP master and subkey ring.
/// This class will generate both the secret and public key rings
/// </remarks>
public class PgpKeyRingGenerator
{
private IList keys = Platform.CreateArrayList();
private string id;
private SymmetricKeyAlgorithmTag encAlgorithm;
private int certificationLevel;
private char[] passPhrase;
private bool useSha1;
private PgpKeyPair masterKey;
private PgpSignatureSubpacketVector hashedPacketVector;
private PgpSignatureSubpacketVector unhashedPacketVector;
private SecureRandom rand;
/// <summary>
/// Create a new key ring generator using old style checksumming. It is recommended to use
/// SHA1 checksumming where possible.
/// </summary>
/// <param name="certificationLevel">The certification level for keys on this ring.</param>
/// <param name="masterKey">The master key pair.</param>
/// <param name="id">The id to be associated with the ring.</param>
/// <param name="encAlgorithm">The algorithm to be used to protect secret keys.</param>
/// <param name="passPhrase">The passPhrase to be used to protect secret keys.</param>
/// <param name="hashedPackets">Packets to be included in the certification hash.</param>
/// <param name="unhashedPackets">Packets to be attached unhashed to the certification.</param>
/// <param name="rand">input secured random.</param>
public PgpKeyRingGenerator(
int certificationLevel,
PgpKeyPair masterKey,
string id,
SymmetricKeyAlgorithmTag encAlgorithm,
char[] passPhrase,
PgpSignatureSubpacketVector hashedPackets,
PgpSignatureSubpacketVector unhashedPackets,
SecureRandom rand)
: this(certificationLevel, masterKey, id, encAlgorithm, passPhrase, false, hashedPackets, unhashedPackets, rand)
{
}
/// <summary>
/// Create a new key ring generator.
/// </summary>
/// <param name="certificationLevel">The certification level for keys on this ring.</param>
/// <param name="masterKey">The master key pair.</param>
/// <param name="id">The id to be associated with the ring.</param>
/// <param name="encAlgorithm">The algorithm to be used to protect secret keys.</param>
/// <param name="passPhrase">The passPhrase to be used to protect secret keys.</param>
/// <param name="useSha1">Checksum the secret keys with SHA1 rather than the older 16 bit checksum.</param>
/// <param name="hashedPackets">Packets to be included in the certification hash.</param>
/// <param name="unhashedPackets">Packets to be attached unhashed to the certification.</param>
/// <param name="rand">input secured random.</param>
public PgpKeyRingGenerator(
int certificationLevel,
PgpKeyPair masterKey,
string id,
SymmetricKeyAlgorithmTag encAlgorithm,
char[] passPhrase,
bool useSha1,
PgpSignatureSubpacketVector hashedPackets,
PgpSignatureSubpacketVector unhashedPackets,
SecureRandom rand)
{
this.certificationLevel = certificationLevel;
this.masterKey = masterKey;
this.id = id;
this.encAlgorithm = encAlgorithm;
this.passPhrase = passPhrase;
this.useSha1 = useSha1;
this.hashedPacketVector = hashedPackets;
this.unhashedPacketVector = unhashedPackets;
this.rand = rand;
keys.Add(new PgpSecretKey(certificationLevel, masterKey, id, encAlgorithm, passPhrase, useSha1, hashedPackets, unhashedPackets, rand));
}
/// <summary>Add a subkey to the key ring to be generated with default certification.</summary>
public void AddSubKey(
PgpKeyPair keyPair)
{
AddSubKey(keyPair, this.hashedPacketVector, this.unhashedPacketVector);
}
/// <summary>
/// Add a subkey with specific hashed and unhashed packets associated with it and
/// default certification.
/// </summary>
/// <param name="keyPair">Public/private key pair.</param>
/// <param name="hashedPackets">Hashed packet values to be included in certification.</param>
/// <param name="unhashedPackets">Unhashed packets values to be included in certification.</param>
/// <exception cref="PgpException"></exception>
public void AddSubKey(
PgpKeyPair keyPair,
PgpSignatureSubpacketVector hashedPackets,
PgpSignatureSubpacketVector unhashedPackets)
{
try
{
PgpSignatureGenerator sGen = new PgpSignatureGenerator(
masterKey.PublicKey.Algorithm, HashAlgorithmTag.Sha1);
//
// Generate the certification
//
sGen.InitSign(PgpSignature.SubkeyBinding, masterKey.PrivateKey);
sGen.SetHashedSubpackets(hashedPackets);
sGen.SetUnhashedSubpackets(unhashedPackets);
IList subSigs = Platform.CreateArrayList();
subSigs.Add(sGen.GenerateCertification(masterKey.PublicKey, keyPair.PublicKey));
keys.Add(new PgpSecretKey(keyPair.PrivateKey, new PgpPublicKey(keyPair.PublicKey, null, subSigs), encAlgorithm, passPhrase, useSha1, rand));
}
catch (PgpException e)
{
throw e;
}
catch (Exception e)
{
throw new PgpException("exception adding subkey: ", e);
}
}
/// <summary>Return the secret key ring.</summary>
public PgpSecretKeyRing GenerateSecretKeyRing()
{
return new PgpSecretKeyRing(keys);
}
/// <summary>Return the public key ring that corresponds to the secret key ring.</summary>
public PgpPublicKeyRing GeneratePublicKeyRing()
{
IList pubKeys = Platform.CreateArrayList();
IEnumerator enumerator = keys.GetEnumerator();
enumerator.MoveNext();
PgpSecretKey pgpSecretKey = (PgpSecretKey) enumerator.Current;
pubKeys.Add(pgpSecretKey.PublicKey);
while (enumerator.MoveNext())
{
pgpSecretKey = (PgpSecretKey) enumerator.Current;
PgpPublicKey k = new PgpPublicKey(pgpSecretKey.PublicKey);
k.publicPk = new PublicSubkeyPacket(
k.Algorithm, k.CreationTime, k.publicPk.Key);
pubKeys.Add(k);
}
return new PgpPublicKeyRing(pubKeys);
}
}
}
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