question: public static String decode ( String encoded , AMEncryption encr ) { if ( checkCaller ( ) ) { try { ISSecurityPermission isp = new ISSecurityPermission ( "access" , "adminpassword" ) ; if ( securityManager != null ) { securityManager . checkPermission ( isp ) ; } } catch ( SecurityException e ) { Debug debug = Debug . getInstance ( "amSDK" ) ; debug . error ( "Security Alert: Unauthorized access to " + "Encoding/Decoding password utility: Returning NULL" , e ) ; return null ; } } if ( encoded == null || encoded . length ( ) == 0 ) { return ( null ) ; } byte [ ] encData = null ; encData = Base64 . decode ( encoded . trim ( ) ) ; if ( encData == null ) { return null ; } byte [ ] rawData = encr . decrypt ( encData ) ; if ( rawData == null ) { return ( null ) ; } String answer = null ; try { answer = new String ( rawData , "utf-8" ) ; } catch ( UnsupportedEncodingException uue ) { Debug debug = Debug . getInstance ( "amSDK" ) ; debug . error ( "Crypt:: Unsupported encoding UTF-8" , uue ) ; answer = new String ( rawData ) ; } return ( answer ) ; }
target:  Decode an encoded string