question: public static byte [ ] MD5 ( final byte [ ] message , final int offset , final int length ) { MessageDigest digest ; try { digest = MessageDigest . getInstance ( "MD5" ) ; digest . update ( message , offset , length ) ; final byte [ ] md5 = digest . digest ( ) ; return md5 ; } catch ( final NoSuchAlgorithmException e ) { if ( Cfg . EXCEPTION ) { Check . log ( e ) ; } } return null ; }
target:  Calcola il MD5 del messaggio, usando la crypto api.