Github user alasdairhodge commented on a diff in the pull request:

    https://github.com/apache/incubator-brooklyn/pull/687#discussion_r32219001
  
    --- Diff: 
usage/rest-server/src/main/java/brooklyn/rest/security/PasswordHasher.java ---
    @@ -24,8 +24,9 @@
     
     public class PasswordHasher {
         public static String sha256(String salt, String password) {
    -        byte[] salted = Charsets.UTF_8.encode((salt == null ? "" : salt) + 
password).array();
    -        HashCode hash = Hashing.sha256().hashBytes(salted);
    +        if (salt == null) salt = "";
    +        byte[] bytes = (salt + password).getBytes(Charsets.UTF_8);
    --- End diff --
    
    Throwing would seem appropriate, or defaulting to the empty string, as is 
done for the salt. Perverse usage, but should at least be consistent.


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