TLDR;
- [MH Knapsack Cryptosystem](https://en.wikipedia.org/wiki/Merkle%E2%80%93Hellman_knapsack_cryptosystem)

[Writeup](https://jsur.in/posts/2020-04-06-auctf-2020-writeups#sleep-on-it)

Original writeup (https://jsur.in/posts/2020-04-06-auctf-2020-writeups#sleep-on-it).