public static int sizeOfBitString(BitSet value, int nbits) {
        return DerUtils.sizeOf(ASN1_BIT_STRING_TAG_NUM, (int) Math.ceil(nbits / 8.0d) + 1); // +1 for padding
    }
public static int sizeOfBitString ( BitSet value , int nbits ) { return DerUtils . sizeOf ( ASN1_BIT_STRING_TAG_NUM , ( int ) Math . ceil ( nbits / 8.0d ) + 1 ) ; }
Size of an ASN.1 BIT STRING.

@param value
the BIT STRING value
@param nbits
the number of bits in the bit string
@return the size of the encoded data