final PGPSecretKeyRing keyRing = new PGPSecretKeyRing(keyRingFile);
keyRingFile.close();
this.key = keyRing.getSecretKey(0x8C7035EF8838238CL);
final Iterator<?> sigs = key.getPublicKey().getSignatures();
this.signature = new KeySignature((PGPSignature) sigs.next());
}