// ECKey
//
pemRd = openPEMResource("eckey.pem", null);
ECNamedCurveParameterSpec spec = (ECNamedCurveParameterSpec)pemRd.readObject();
pair = (KeyPair)pemRd.readObject();
Signature sgr = Signature.getInstance("ECDSA", "BC");
sgr.initSign(pair.getPrivate());
byte[] message = new byte[] { (byte)'a', (byte)'b', (byte)'c' };