if (!(publicKey instanceof PublicKey)) {
String supplied = publicKey.getClass().getName();
String needed = PublicKey.class.getName();
Object exArgs[] = { supplied, needed };
throw new XMLSignatureException("algorithms.WrongKeyForThisOperation", exArgs);
}
try {
this.signatureAlgorithm.initVerify((PublicKey) publicKey);
} catch (InvalidKeyException ex) {
// reinstantiate Signature object to work around bug in JDK
// see: http://bugs.sun.com/view_bug.do?bug_id=4953555
Signature sig = this.signatureAlgorithm;
try {
this.signatureAlgorithm = Signature.getInstance(signatureAlgorithm.getAlgorithm());
} catch (Exception e) {
// this shouldn't occur, but if it does, restore previous
// Signature
if (log.isDebugEnabled()) {
log.debug("Exception when reinstantiating Signature:" + e);
}
this.signatureAlgorithm = sig;
}
throw new XMLSignatureException("empty", ex);
}
}