/// <summary>
/// Returns true if the given object is the "this" key.
/// </summary>
/// <remarks>
/// The keys are compared by there fingerprint. If the fingerprint
/// is the same, the keys are said to be the same.
/// </remarks>
/// <param name="o">An object that shall be compared against
/// this.</param>
/// <returns>True if the giben object o is the same as the
/// "this" key.</returns>
public override bool Equals(object o)
{
if (o is TransportablePublicKey)
{
TransportablePublicKey tpkKey = (TransportablePublicKey)o;
return(tpkKey.PrimaryKey.Fingerprint == this.PrimaryKey.Fingerprint);
}
return(false);
}
public static TransportablePublicKey[] SplitKeys(string strRadix64)
{
ArrayList alKeys = new ArrayList();
Packet[] pPackets = Packet.ParsePackets(strRadix64);
byte[] bOneKey = new byte[0];
for (int i = 0; i < pPackets.Length; i++)
{
if (pPackets[i] is PublicKeyPacket)
{
PublicKeyPacket pkpKey = (PublicKeyPacket)pPackets[i];
if ((pkpKey.Content == ContentTypes.PublicKey) && (bOneKey.Length > 10))
{
TransportablePublicKey tpkKey = new TransportablePublicKey(Radix64.Encode(bOneKey, true));
alKeys.Add(tpkKey);
bOneKey = new byte[0];
}
}
byte[] bPacket = pPackets[i].Generate();
byte[] bTmpKey = new byte[bOneKey.Length];
bOneKey.CopyTo(bTmpKey, 0);
bOneKey = new byte[bOneKey.Length + bPacket.Length];
Array.Copy(bTmpKey, 0, bOneKey, 0, bTmpKey.Length);
Array.Copy(bPacket, 0, bOneKey, bTmpKey.Length, bPacket.Length);
}
if (bOneKey.Length > 10)
{
TransportablePublicKey tpkKey = new TransportablePublicKey(Radix64.Encode(bOneKey, true));
alKeys.Add(tpkKey);
}
TransportablePublicKey[] tpkKeys = new TransportablePublicKey[alKeys.Count];
int iCount = 0;
IEnumerator ieKeys = alKeys.GetEnumerator();
while (ieKeys.MoveNext())
{
if (!(ieKeys.Current is TransportablePublicKey))
{
continue;
}
tpkKeys[iCount++] = (TransportablePublicKey)ieKeys.Current;
}
return(tpkKeys);
}
/// <summary>
/// Verifies the signature of this signed message.
/// </summary>
/// <remarks>No remarks</remarks>
/// <returns>Returns a SignatureStatusType that contains
/// whether the signature was valid, invalid or could not be
/// verified</returns>
/// <param name="pkrKeyRing">The public keyring containing
/// all keys known to the local system.</param>
public SignatureStatusTypes Verify(PublicKeyRing pkrKeyRing)
{
TransportablePublicKey tpkKey = pkrKeyRing.Find(spSignature.KeyID);
if (tpkKey == null)
{
return(SignatureStatusTypes.Signing_Key_Not_Available);
}
PublicKeyPacket pkpKey = tpkKey.FindKey(spSignature.KeyID);
spSignature.Verify(lmSignedMessage.Binary, pkpKey);
return(spSignature.SignatureStatus);
}
/// <summary>
/// Validates all certificates belonging the the given public key packet
/// and the current certifications.
/// </summary>
/// <remarks>
/// So far only works with v4 signatures!
/// </remarks>
/// <param name="pkpKey">The public key packet to which the userid
/// belongs.</param>
/// <param name="pkrRing">A keyring containing all public keys known to
/// the system. This is neccessary in order to verify the signatures.
/// </param>
public void Validate(PublicKeyPacket pkpKey, PublicKeyRing pkrRing)
{
IEnumerator ieCertificates = Certificates.GetEnumerator();
while (ieCertificates.MoveNext())
{
if (ieCertificates.Current is SignaturePacket)
{
SignaturePacket spCert = (SignaturePacket)ieCertificates.Current;
TransportablePublicKey tkpSigningKey = pkrRing.Find(spCert.KeyID);
if (tkpSigningKey == null)
{
continue;
}
PublicKeyPacket pkpSigningKey = tkpSigningKey.PrimaryKey;
if (spCert.Version == SignaturePacketVersionNumbers.v4)
{
byte[] bKey = new byte[pkpKey.Body.Length + 3];
bKey[0] = 0x99;
bKey[1] = (byte)((pkpKey.Body.Length >> 8) & 0xFF);
bKey[2] = (byte)(pkpKey.Body.Length & 0xFF);
Array.Copy(pkpKey.Body, 0, bKey, 3, pkpKey.Body.Length);
byte[] bUserID = new byte[UserID.Body.Length + 5];
bUserID[0] = 0xb4;
bUserID[1] = (byte)((UserID.Body.Length >> 24) & 0xFF);
bUserID[2] = (byte)((UserID.Body.Length >> 16) & 0xFF);
bUserID[3] = (byte)((UserID.Body.Length >> 8) & 0xFF);
bUserID[4] = (byte)(UserID.Body.Length & 0xFF);
Array.Copy(UserID.Body, 0, bUserID, 5, UserID.Body.Length);
byte[] bData = new byte[bUserID.Length + bKey.Length];
Array.Copy(bKey, 0, bData, 0, bKey.Length);
Array.Copy(bUserID, 0, bData, bKey.Length, bUserID.Length);
spCert.Verify(bData, pkpSigningKey);
}
else
{
//TODO: Add code for v3 Signature verification
}
}
}
}
