public static String saslName(String username) {
        String replace1 = EQUAL.matcher(username).replaceAll(Matcher.quoteReplacement("=3D"));
        return COMMA.matcher(replace1).replaceAll(Matcher.quoteReplacement("=2C"));
    }
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