public byte[] saltedPassword(String password, byte[] salt, int iterations) throws InvalidKeyException {
        return hi(normalize(password), salt, iterations);
    }
Scram message salt and hash functions defined in <a href="https://tools.ietf.org/html/rfc5802">RFC 5802</a>.
clients/src/main/java/org/apache/kafka/common/security/scram/internals/ScramFormatter.java