private static byte[] newAssertionHandle() {
        val handle = new byte[ASSERTION_HANDLE_SIZE];
        RandomUtils.getNativeInstance().nextBytes(handle);
        return handle;
    }
{@inheritDoc}
We ignore prefixes for SAML compliance.
support/cas-server-support-saml-core-api/src/main/java/org/apereo/cas/support/saml/util/SamlCompliantUniqueTicketIdGenerator.java