public synchronized void verify(PublicKey key, Provider sigProvider)
throws CRLException, NoSuchAlgorithmException, InvalidKeyException, SignatureException {
if (signedCRL == null) {
throw new CRLException("Uninitialized CRL");
}
Signature sigVerf = null;
if (sigProvider == null) {
sigVerf = Signature.getInstance(sigAlgId.getName());
} else {
sigVerf = Signature.getInstance(sigAlgId.getName(), sigProvider);
}
sigVerf.initVerify(key);
if (tbsCertList == null) {
throw new CRLException("Uninitialized CRL");
}
sigVerf.update(tbsCertList, 0, tbsCertList.length);
if (!sigVerf.verify(signature)) {
throw new SignatureException("Signature does not match.");
}
verifiedPublicKey = key;
}
public void sign(PrivateKey key, String algorithm, String provider)
throws CRLException, NoSuchAlgorithmException, InvalidKeyException, NoSuchProviderException,
SignatureException {
try {
if (readOnly) {
throw new CRLException("cannot over-write existing CRL");
}
Signature sigEngine = null;
if ((provider == null) || (provider.length() == 0)) {
sigEngine = Signature.getInstance(algorithm);
} else {
sigEngine = Signature.getInstance(algorithm, provider);
}
sigEngine.initSign(key);
sigAlgId = AlgorithmId.get(sigEngine.getAlgorithm());
infoSigAlgId = sigAlgId;
DerOutputStream out = new DerOutputStream();
DerOutputStream tmp = new DerOutputStream();
encodeInfo(tmp);
sigAlgId.encode(tmp);
sigEngine.update(tbsCertList, 0, tbsCertList.length);
signature = sigEngine.sign();
tmp.putBitString(signature);
out.write(DerValue.tag_Sequence, tmp);
signedCRL = out.toByteArray();
readOnly = true;
} catch (IOException e) {
throw new CRLException("Error while encoding data: " + e.getMessage());
}
}