bool PgpManager::IsValidSignature (const QCA::PGPKey& pubkey,
const QByteArray& message, const QByteArray& signature)
{
if (pubkey.isNull ())
{
warning (QString ("Cannot encrypt: public key is null"));
return false;
}
QCA::OpenPGP pgp;
QCA::SecureMessageKey key;
QCA::SecureMessage msg (&pgp);
key.setPGPPublicKey (pubkey);
msg.setSigner (key);
msg.setFormat (QCA::SecureMessage::Binary);
msg.startVerify (WrapPGP (signature, PGPType::Signature).toUtf8 ());
msg.update (message);
msg.end ();
msg.waitForFinished ();
if (msg.verifySuccess ())
return true;
else
{
info (QString ("Invalid signature: %1").arg (msg.errorCode ()));
return false;
}
}
QByteArray PgpManager::EncryptBody (const QCA::PGPKey& pubkey, const QByteArray& body)
{
if (pubkey.isNull ())
{
warning ("Cannot encrypt: public key is null");
throw GPGExceptions::NullPubkey {};
}
QCA::SecureMessageKey msgKey;
msgKey.setPGPPublicKey (pubkey);
QCA::OpenPGP pgp;
QCA::SecureMessage msg (&pgp);
msg.setRecipient (msgKey);
msg.setFormat (QCA::SecureMessage::Ascii);
msg.startEncrypt ();
msg.update (body);
msg.end ();
msg.waitForFinished ();
if (!msg.success ())
{
info (QString { "Error encrypting: %1 (%2)." }
.arg (msg.errorCode ())
.arg (msg.diagnosticText ()));
throw GPGExceptions::Encryption { msg.errorCode (), msg.diagnosticText () };
}
return msg.read ();
}