/**
* Compute an encrypted server public key signature using the Master Private Key.
*
* @param C_serverPublicKey Encrypted server public key.
* @param masterPrivateKey Master Private Key.
* @return Signature of the encrypted server public key.
* @throws InvalidKeyException If master private key is invalid.
*/
public byte[] computeServerPublicKeySignature(
byte[] C_serverPublicKey, PrivateKey masterPrivateKey) throws InvalidKeyException {
try {
return signatureUtils.computeECDSASignature(C_serverPublicKey, masterPrivateKey);
} catch (SignatureException ex) {
Logger.getLogger(PowerAuthServerActivation.class.getName()).log(Level.SEVERE, null, ex);
}
return null;
}
/**
* Generate signature for the activation data. Activation data are constructed as a concatenation
* of activationIdShort and activationOTP, both values are separated with the "-" character:
*
* <p>activationData = activationIdShort + "_" + activationOTP
*
* <p>Signature is then computed using the master private key.
*
* @param activationIdShort Short activation ID.
* @param activationOTP Activation OTP value.
* @param masterPrivateKey Master Private Key.
* @return Signature of activation data using Master Private Key.
* @throws InvalidKeyException In case Master Private Key is invalid.
*/
public byte[] generateActivationSignature(
String activationIdShort, String activationOTP, PrivateKey masterPrivateKey)
throws InvalidKeyException {
try {
byte[] bytes = (activationIdShort + "-" + activationOTP).getBytes("UTF-8");
byte[] signature = signatureUtils.computeECDSASignature(bytes, masterPrivateKey);
return signature;
} catch (UnsupportedEncodingException | SignatureException ex) {
Logger.getLogger(PowerAuthServerActivation.class.getName()).log(Level.SEVERE, null, ex);
}
return null;
}