| Find the right route — Part 2 | 101 | April 1, 2021, 6:08 p.m. |
| RSA Factoring Challenge: RSA-230 | 0 | March 23, 2021, 7:12 p.m. |
| How do you become a big cryptographer? | 100 | March 22, 2021, 3:21 p.m. |
| Factorization Cipher — Part 2 | 1,085 | Nov. 25, 2020, 4:36 p.m. |
| Factorization Cipher — Part 1 | 100 | Nov. 24, 2020, 8:01 p.m. |
| Letter to the Templars — Part 1 | 100 | Oct. 8, 2020, 12:57 a.m. |
| Broadcasting and low exponent — RSA Attack | 1,085 | Oct. 3, 2020, 3:18 p.m. |
| Cryptanalysis Hacking Puzzles — Part 2 | 100 | Sept. 11, 2020, 10:26 p.m. |
| Lightweight Introduction to Lattices — Part 2 | 150 | June 25, 2020, 6:58 p.m. |
| Lightweight Introduction to Lattices — Part 1 | 102 | June 25, 2020, 5:44 p.m. |
| Trendy Messenger | 1,131 | April 26, 2020, 4:38 p.m. |
| Caesar Encryption | 100 | Jan. 11, 2020, 12:43 p.m. |
| Snow White and the seven dwarfs | 100 | Jan. 5, 2020, 12:06 a.m. |
| Cracking SHA1-Hashed Passwords | 1,086 | Dec. 24, 2019, 3:34 a.m. |