private void setupKey ( OneKey key ) throws CoseException { CBORObject cn2 ; CBORObject cn ; cnKey = key ; if ( rgbSignature != null ) return ; cn = key . get ( KeyKeys . Algorithm ) ; if ( cn != null ) { cn2 = findAttribute ( HeaderKeys . Algorithm ) ; if ( cn2 == null ) addAttribute ( HeaderKeys . Algorithm , cn , Attribute . PROTECTED ) ; } cn = key . get ( KeyKeys . KeyId ) ; if ( cn != null ) { cn2 = findAttribute ( HeaderKeys . KID ) ; if ( cn2 == null ) addAttribute ( HeaderKeys . KID , cn , Attribute . UNPROTECTED ) ; } }
Set the key on the object if there is not a signature on this object then set the algorithm and the key id from the key if they exist on the key and do not exist in the message .