/**
* @param privateKey
* @param data
* @return
* @throws SignatureException
* @throws NoSuchAlgorithmException
* @throws InvalidKeyException
*/
public static byte[] sign(PrivateKey privateKey, byte[] data) throws CryptoException {
try {
Signature sig = Signature.getInstance(ALGO, "BC");
sig.initSign(privateKey);
sig.update(data);
return sig.sign();
} catch (SignatureException
| NoSuchProviderException
| InvalidKeyException
| NoSuchAlgorithmException e) {
throw new CryptoException("Signing failed. " + e.getMessage());
}
}
/**
* @param publicKey
* @param data
* @param signature
* @return
* @throws NoSuchAlgorithmException
* @throws InvalidKeyException
* @throws SignatureException
*/
public static boolean verify(PublicKey publicKey, byte[] data, byte[] signature)
throws CryptoException {
try {
Signature sig = Signature.getInstance(ALGO, "BC");
sig.initVerify(publicKey);
sig.update(data);
return sig.verify(signature);
} catch (SignatureException
| NoSuchProviderException
| InvalidKeyException
| NoSuchAlgorithmException e) {
throw new CryptoException("Signature verification failed. " + e.getMessage());
}
}