@Override
public KeySelectorResult select(
final KeyInfo ki, final Purpose p, final AlgorithmMethod m, final XMLCryptoContext c)
throws KeySelectorException {
if (ki == null) throw new KeySelectorException("KeyInfo is null");
final SignatureMethod sm = (SignatureMethod) m;
@SuppressWarnings("unchecked")
final List<Object> list = ki.getContent();
for (final Object l : list) {
final XMLStructure s = (XMLStructure) l;
PublicKey pk = null;
if (s instanceof KeyValue) {
try {
pk = ((KeyValue) s).getPublicKey();
} catch (final KeyException ke) {
throw new KeySelectorException(ke);
}
} else if (s instanceof X509Data) {
for (final Object d : ((X509Data) s).getContent()) {
if (d instanceof X509Certificate) {
pk = ((Certificate) d).getPublicKey();
}
}
}
if (pk != null) {
final String sa = sm.getAlgorithm();
final String ka = pk.getAlgorithm();
if ("DSA".equalsIgnoreCase(ka) && "http://www.w3.org/2000/09/xmldsig#dsa-sha1".equals(sa)
|| "RSA".equalsIgnoreCase(ka)
&& "http://www.w3.org/2000/09/xmldsig#rsa-sha1".equals(sa)) {
return new MyKeySelectorResult(pk);
}
}
}
throw new KeySelectorException("No KeyValue element found");
}
@Override
public BitcoinSigner findSignerByPublicKey(PublicKey publicKey) {
Address address = publicKey.toAddress(_network);
InMemoryPrivateKey privateKey;
try {
privateKey = getPrivateKeyForAddress(address, _cipher);
} catch (InvalidKeyCipher e) {
throw new RuntimeException(
"Unable to decrypt private key for address " + address.toString());
}
if (privateKey != null) {
return privateKey;
}
throw new RuntimeException("Unable to find private key for address " + address.toString());
}