question: private int parseNonce ( final byte [ ] b , final int off ) throws ParseException { final int bytesToParseLen = b . length - off ; if ( bytesToParseLen >= nonceLength_ ) { nonce_ = Arrays . copyOfRange ( b , off , off + nonceLength_ ) ; return nonceLength_ ; } else { throw new ParseException ( "Not enough bytes to parse nonce" ) ; } }
target:  Parse the nonce in the provided bytes. It looks for bytes of size defined by the nonce length in the provided bytes starting at the specified off. <p> If successful, it returns the size of the parsed bytes which is the nonce length. On failure, it throws a parse exception.