lib/secretsharing/shamir.rb
def get_random_number(bytes)
      RbNaCl::Util.bin2hex(RbNaCl::Random.random_bytes(bytes).to_s).to_i(16)
    end
def get_random_number(bytes)
      RbNaCl::Util.bin2hex(RbNaCl::Random.random_bytes(bytes).to_s).to_i(16)
    end
Create a random number of a specified Byte length
 returns Bignum