christy13/6006psets_ng — comment on commit b3620c9d94c0ca8758b37a7165dafe7b5ad2bff0
File: 5/code/rsa/big_num_full.rb line 36
By pwnall:

Also, after reading the code, I think `ensure_bignum` would be enough. I hope a find / replace can take care of this.

Consider adding a bang at the end, since the method throws an exception. It's up to you, though.