| Unconcealed RSA messages | 1,091 | Nov. 14, 2018, 7:24 p.m. |
| Smartcard RSA | 1,088 | Nov. 14, 2018, 6:51 p.m. |
| Factorization Cipher — Part 2 | 1,091 | Nov. 14, 2018, 5:43 p.m. |
| Hybrid Encryption I | 1,088 | Nov. 14, 2018, 5:31 p.m. |
| RSA: Two different keys — same ciphertext | 1,090 | Nov. 14, 2018, 5:26 p.m. |
| Brute-Force-Attack on Triple-DES with Reduced Key Space | 1,088 | Nov. 14, 2018, 5:17 p.m. |
| Not-so-Secret Message from Malawi — Part I (RSA) | 1,088 | Nov. 14, 2018, 4:54 p.m. |
| Broadcasting and low exponent — RSA Attack | 1,090 | Nov. 14, 2018, 12:07 a.m. |
| Alice's Birthday Party (Part 2) | 1,088 | Nov. 14, 2018, 12:01 a.m. |
| Alice's Birthday Party (Part 1) | 1,088 | Nov. 13, 2018, 11:56 p.m. |
| One-Time Pad with Flaws | 100 | Nov. 13, 2018, 11:28 p.m. |
| Cracking SHA1-Hashed Passwords | 1,089 | Nov. 13, 2018, 11:18 p.m. |
| A modified homophonic cipher with reduced alphabets — Part 2 | 100 | Nov. 13, 2018, 11:17 p.m. |
| A modified homophonic cipher with reduced alphabets — Part 1 | 100 | Nov. 13, 2018, 11:12 p.m. |
| Grille Cipher | 100 | Nov. 13, 2018, 11:01 p.m. |
| Factorization Cipher — Part 1 | 100 | Nov. 13, 2018, 10:47 p.m. |
| Affine Codes / Modulo Arithmetic with N / Extended Euclid | 100 | Nov. 13, 2018, 10:41 p.m. |
| Monoalphabetic Substitution | 100 | Nov. 13, 2018, 10:36 p.m. |
| Number Sequence — Part 4 | 100 | Nov. 13, 2018, 10:06 p.m. |
| Letter to the Templars — Part 3 | 1,095 | Nov. 13, 2018, 10:04 p.m. |
| A hidden word | 100 | Nov. 13, 2018, 9:58 p.m. |
| Letter to the Templars — Part 2 | 100 | Nov. 13, 2018, 9:52 p.m. |
| Number Sequence — Part 3 | 100 | Nov. 13, 2018, 9:47 p.m. |
| Letter to the Templars — Part 1 | 100 | Nov. 13, 2018, 8:01 p.m. |
| Beaver Code | 100 | Nov. 13, 2018, 7:45 p.m. |
| Caesar Encryption | 100 | Nov. 13, 2018, 7:40 p.m. |
| Number Sequence — Part 2 | 100 | Nov. 13, 2018, 7:28 p.m. |
| Original Caesar Cipher | 100 | Nov. 13, 2018, 7:25 p.m. |
| Number Sequence | 100 | Nov. 13, 2018, 6:46 p.m. |