HashedCredentialsMatcher > getCredentials() bug
-----------------------------------------------

                 Key: SHIRO-326
                 URL: https://issues.apache.org/jira/browse/SHIRO-326
             Project: Shiro
          Issue Type: Bug
          Components: Authorization (access control) , Cryptography & Hashing
    Affects Versions: 1.1.0
         Environment: irrelevant
            Reporter: an wolf


isStoredCredentialsHexEncoded() always returns true, no matter if I store a hex 
or a base64 password or credential. 

Hex is Base16. Authentication fails if I store Base64 with an 
IllegalArgumentException because Hex.decode(...) doesn't recognize but the 0..9 
and a..f alphabet

Code quote:

//account.credentials were a char[] or String, so
            //we need to do text decoding first:
            if (isStoredCredentialsHexEncoded()) {
                storedBytes = Hex.decode(storedBytes);
            } else {
                storedBytes = Base64.decode(storedBytes);
            }

...
from my ini:
# password hashing specification
sha256Matcher = org.apache.shiro.authc.credential.HashedCredentialsMatcher
sha256Matcher.hashAlgorithmName=SHA-256

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