Can't get to have SHA-256 hash working with my spring security

Question

I am using the Spring Roo framework which uses Spring Security as security framework. I configured it the following way:

Answer 1

Finally I came up with this solution, thank to @Oleg Estekhin comment:

public String sha256(String original) throws NoSuchAlgorithmException {
    MessageDigest md = MessageDigest.getInstance("SHA-256");
    md.update(original.getBytes());
    byte[] digest = md.digest();
    return new String(Hex.encodeHexString(digest));
}