| Advent Challenge — Part 3 | 1,112 | May 4, 2021, 5:57 p.m. |
| Advent-Challenge — Part 2 | 1,111 | May 4, 2021, 10:03 a.m. |
| Post-Quantum Cryptography: Unbalanced Oil and Vinegar System — Part 1 | 100 | March 1, 2021, 1:31 p.m. |
| Not-so-Secret Message from Malawi — Part II (ECC) | 1,082 | Feb. 19, 2021, 7:24 p.m. |
| Lightweight Introduction to Lattices — Part 3 | 1,324 | Aug. 18, 2020, 4:34 p.m. |
| Fastest in the West | 1,129 | June 6, 2020, 4:02 p.m. |
| Trendy Messenger | 1,129 | June 5, 2020, 9:37 a.m. |
| The LoRa Cipher: Logic Randomness — Part 1 | 1,230 | May 30, 2020, 3:17 p.m. |
| Factorization Cipher — Part 2 | 1,087 | March 10, 2020, 11:01 p.m. |
| Affine Codes / Modulo Arithmetic with N / Extended Euclid | 100 | Feb. 28, 2020, 9:35 p.m. |
| Smartcard RSA | 1,086 | June 4, 2019, 1:54 a.m. |
| RSA with Special d | 13,148 | May 31, 2019, 7:15 p.m. |
| Summer Job | 1,160 | May 21, 2019, 1 p.m. |
| Unusual encryption using a diophantine equation | 1,089 | May 15, 2019, 2:23 p.m. |
| Hybrid Encryption I | 1,086 | May 14, 2019, 6:45 p.m. |
| Alice's Birthday Party (Part 2) | 1,086 | May 14, 2019, 4:17 p.m. |
| Alice's Birthday Party (Part 1) | 1,086 | May 14, 2019, 3:50 p.m. |
| Unconcealed RSA messages | 1,089 | May 13, 2019, 12:24 a.m. |
| Partial Key Exposure with RSA — Part 1 | 1,090 | May 10, 2019, 3:10 p.m. |
| RSA: Two different keys — same ciphertext | 1,089 | May 7, 2019, 10:28 p.m. |
| Not-so-Secret Message from Malawi — Part I (RSA) | 1,086 | May 6, 2019, 2:09 p.m. |
| Broadcasting and low exponent — RSA Attack | 1,089 | April 27, 2019, 11:56 a.m. |
| Grille Cipher | 100 | April 25, 2019, 1:02 p.m. |
| Cracking SHA1-Hashed Passwords | 1,088 | April 19, 2019, 11:55 p.m. |
| Factorization Cipher — Part 1 | 100 | April 19, 2019, 11:42 p.m. |
| Letter to the Templars — Part 3 | 1,093 | April 19, 2019, 10:51 p.m. |
| A hidden word | 100 | April 19, 2019, 10:23 p.m. |
| Letter to the Templars — Part 2 | 100 | April 19, 2019, 9:04 p.m. |
| Letter to the Templars — Part 1 | 100 | April 19, 2019, 6:13 p.m. |
| Beaver Code | 100 | April 18, 2019, 9:50 p.m. |
| Caesar Encryption | 100 | April 18, 2019, 5:37 p.m. |
| Number Sequence — Part 2 | 100 | April 18, 2019, 3:07 p.m. |
| Original Caesar Cipher | 100 | April 18, 2019, 2:55 p.m. |
| Number Sequence | 100 | April 18, 2019, 12:27 p.m. |