public KeyPacket(KeyPacket keyPacket)
{
this.version = keyPacket.Version;
this.time = keyPacket.time;
this.algorithm = keyPacket.Algorithm;
this.keyBytes = keyPacket.keyBytes.AsSpan(0, keyPacket.PublicKeyLength).ToArray();
this.publicKeyLength = keyPacket.publicKeyLength;
}
public PublicKeyEncSessionPacket(
long keyId,
PgpPublicKeyAlgorithm algorithm,
ReadOnlySpan <byte> sessionKey)
{
this.version = 3;
this.keyId = keyId;
this.algorithm = algorithm;
this.sessionKey = sessionKey.ToArray();
}
/// <summary>Construct a version 4 public key packet.</summary>
public KeyPacket(
PgpPublicKeyAlgorithm algorithm,
DateTime time,
byte[] keyBytes)
{
this.version = 4;
this.time = new DateTimeOffset(time, TimeSpan.Zero).ToUnixTimeSeconds();
this.algorithm = algorithm;
this.keyBytes = keyBytes;
UpdatePublicKeyLength();
}
public OnePassSignaturePacket(
PgpSignatureType sigType,
PgpHashAlgorithm hashAlgorithm,
PgpPublicKeyAlgorithm keyAlgorithm,
long keyId,
bool isNested)
{
this.version = 3;
this.sigType = sigType;
this.hashAlgorithm = hashAlgorithm;
this.keyAlgorithm = keyAlgorithm;
this.keyId = keyId;
this.nested = (isNested) ? 0 : 1;
}
private static byte[] CreateData(
RevocationKeyTag signatureClass,
PgpPublicKeyAlgorithm keyAlgorithm,
byte[] fingerprint)
{
// 1 octet of class,
// 1 octet of public-key algorithm ID,
// 20 octets of fingerprint
byte[] data = new byte[2 + fingerprint.Length];
data[0] = (byte)signatureClass;
data[1] = (byte)keyAlgorithm;
fingerprint.CopyTo(data, 2);
return(data);
}
public void Finish(
int version,
PgpPublicKeyAlgorithm keyAlgorithm,
DateTime creationTime,
SignatureSubpacket[] hashedSubpackets)
{
if (version == 3)
{
long time = new DateTimeOffset(creationTime, TimeSpan.Zero).ToUnixTimeSeconds();
sig.TransformBlock(new byte[] {
(byte)signatureType,
(byte)(time >> 24),
(byte)(time >> 16),
(byte)(time >> 8),
(byte)(time)
}, 0, 5, null, 0);
}
else
{
sig.TransformBlock(new byte[] {
(byte)version,
(byte)this.SignatureType,
(byte)keyAlgorithm,
(byte)this.HashAlgorithm
}, 0, 4, null, 0);
MemoryStream hOut = new MemoryStream();
foreach (var hashedSubpacket in hashedSubpackets)
{
hashedSubpacket.Encode(hOut);
}
sig.TransformBlock(new byte[] { (byte)(hOut.Length >> 8), (byte)hOut.Length }, 0, 2, null, 0);
sig.TransformBlock(hOut.GetBuffer(), 0, (int)hOut.Length, null, 0);
int hDataLength = 4 + (int)hOut.Length + 2;
sig.TransformBlock(new byte[] {
(byte)version,
(byte)0xff,
(byte)(hDataLength >> 24),
(byte)(hDataLength >> 16),
(byte)(hDataLength >> 8),
(byte)(hDataLength)
}, 0, 6, null, 0);
}
sig.TransformFinalBlock(Array.Empty <byte>(), 0, 0);
}
internal KeyPacket(Stream bcpgIn)
{
this.version = bcpgIn.ReadByte();
this.time = ((uint)bcpgIn.ReadByte() << 24) | ((uint)bcpgIn.ReadByte() << 16) | ((uint)bcpgIn.ReadByte() << 8) | (uint)bcpgIn.ReadByte();
if (version <= 3)
{
this.validDays = (bcpgIn.ReadByte() << 8) | bcpgIn.ReadByte();
}
this.algorithm = (PgpPublicKeyAlgorithm)bcpgIn.ReadByte();
this.keyBytes = bcpgIn.ReadAll();
UpdatePublicKeyLength();
}
internal PublicKeyEncSessionPacket(Stream bcpgIn)
{
version = bcpgIn.ReadByte();
keyId |= (long)bcpgIn.ReadByte() << 56;
keyId |= (long)bcpgIn.ReadByte() << 48;
keyId |= (long)bcpgIn.ReadByte() << 40;
keyId |= (long)bcpgIn.ReadByte() << 32;
keyId |= (long)bcpgIn.ReadByte() << 24;
keyId |= (long)bcpgIn.ReadByte() << 16;
keyId |= (long)bcpgIn.ReadByte() << 8;
keyId |= (uint)bcpgIn.ReadByte();
algorithm = (PgpPublicKeyAlgorithm)bcpgIn.ReadByte();
sessionKey = bcpgIn.ReadAll();
}
internal OnePassSignaturePacket(Stream bcpgIn)
{
version = bcpgIn.ReadByte();
sigType = (PgpSignatureType)bcpgIn.ReadByte();
hashAlgorithm = (PgpHashAlgorithm)bcpgIn.ReadByte();
keyAlgorithm = (PgpPublicKeyAlgorithm)bcpgIn.ReadByte();
keyId |= (long)bcpgIn.ReadByte() << 56;
keyId |= (long)bcpgIn.ReadByte() << 48;
keyId |= (long)bcpgIn.ReadByte() << 40;
keyId |= (long)bcpgIn.ReadByte() << 32;
keyId |= (long)bcpgIn.ReadByte() << 24;
keyId |= (long)bcpgIn.ReadByte() << 16;
keyId |= (long)bcpgIn.ReadByte() << 8;
keyId |= (uint)bcpgIn.ReadByte();
nested = bcpgIn.ReadByte();
}
public SignaturePacket(
int version,
PgpSignatureType signatureType,
long keyId,
PgpPublicKeyAlgorithm keyAlgorithm,
PgpHashAlgorithm hashAlgorithm,
DateTime creationTime,
SignatureSubpacket[] hashedData,
SignatureSubpacket[] unhashedData,
byte[] fingerprint,
byte[] signature)
{
this.version = version;
this.signatureType = signatureType;
this.keyId = keyId;
this.keyAlgorithm = keyAlgorithm;
this.hashAlgorithm = hashAlgorithm;
this.hashedData = hashedData;
this.unhashedData = unhashedData;
this.fingerprint = fingerprint;
this.signature = signature;
this.creationTime = creationTime;
}
internal SignaturePacket(Stream bcpgIn)
{
version = bcpgIn.ReadByte();
if (version == 3 || version == 2)
{
// int l =
bcpgIn.ReadByte();
signatureType = (PgpSignatureType)bcpgIn.ReadByte();
creationTime = DateTimeOffset.FromUnixTimeSeconds(
((long)bcpgIn.ReadByte() << 24) | ((long)bcpgIn.ReadByte() << 16) | ((long)bcpgIn.ReadByte() << 8) | (uint)bcpgIn.ReadByte()).UtcDateTime;
keyId |= (long)bcpgIn.ReadByte() << 56;
keyId |= (long)bcpgIn.ReadByte() << 48;
keyId |= (long)bcpgIn.ReadByte() << 40;
keyId |= (long)bcpgIn.ReadByte() << 32;
keyId |= (long)bcpgIn.ReadByte() << 24;
keyId |= (long)bcpgIn.ReadByte() << 16;
keyId |= (long)bcpgIn.ReadByte() << 8;
keyId |= (uint)bcpgIn.ReadByte();
keyAlgorithm = (PgpPublicKeyAlgorithm)bcpgIn.ReadByte();
hashAlgorithm = (PgpHashAlgorithm)bcpgIn.ReadByte();
hashedData = Array.Empty <SignatureSubpacket>();
unhashedData = Array.Empty <SignatureSubpacket>();
}
else if (version == 4)
{
signatureType = (PgpSignatureType)bcpgIn.ReadByte();
keyAlgorithm = (PgpPublicKeyAlgorithm)bcpgIn.ReadByte();
hashAlgorithm = (PgpHashAlgorithm)bcpgIn.ReadByte();
int hashedLength = (bcpgIn.ReadByte() << 8) | bcpgIn.ReadByte();
byte[] hashed = new byte[hashedLength];
if (bcpgIn.ReadFully(hashed) < hashed.Length)
{
throw new EndOfStreamException();
}
//
// read the signature sub packet data.
//
SignatureSubpacketParser sIn = new SignatureSubpacketParser(new MemoryStream(hashed, false));
IList <SignatureSubpacket> v = new List <SignatureSubpacket>();
SignatureSubpacket? sub;
while ((sub = sIn.ReadPacket()) != null)
{
v.Add(sub);
if (sub is IssuerKeyId issuerKeyId)
{
keyId = issuerKeyId.KeyId;
}
else if (sub is SignatureCreationTime signatureCreationTime)
{
creationTime = signatureCreationTime.Time;
}
}
hashedData = v.ToArray();
int unhashedLength = (bcpgIn.ReadByte() << 8) | bcpgIn.ReadByte();
byte[] unhashed = new byte[unhashedLength];
if (bcpgIn.ReadFully(unhashed) < unhashed.Length)
{
throw new EndOfStreamException();
}
sIn = new SignatureSubpacketParser(new MemoryStream(unhashed, false));
v.Clear();
while ((sub = sIn.ReadPacket()) != null)
{
v.Add(sub);
if (sub is IssuerKeyId issuerKeyId && keyId == 0)
{
keyId = issuerKeyId.KeyId;
}
}
unhashedData = v.ToArray();
}
else
{
throw new PgpException("unsupported version: " + version);
}
fingerprint = new byte[2];
if (bcpgIn.ReadFully(fingerprint) < fingerprint.Length)
{
throw new EndOfStreamException();
}
signature = bcpgIn.ReadAll();
}
public PublicSubkeyPacket(PgpPublicKeyAlgorithm algorithm, DateTime creationTime, byte[] keyBytes)
: base(algorithm, creationTime, keyBytes)
{
}
public RevocationKey(bool isCritical, RevocationKeyTag signatureClass, PgpPublicKeyAlgorithm keyAlgorithm, byte[] fingerprint)
: base(SignatureSubpacketTag.RevocationKey, isCritical, false, CreateData(signatureClass, keyAlgorithm, fingerprint))
{
}
/// <summary>
/// Sets revocation key sub packet
/// </summary>
public void SetRevocationKey(bool isCritical, PgpPublicKeyAlgorithm keyAlgorithm, byte[] fingerprint)
{
subpackets[SignatureSubpacketTag.RevocationKey] = new RevocationKey(isCritical, RevocationKeyTag.ClassDefault, keyAlgorithm, fingerprint);
}
