| Date | User | Challenge | Score |
| zero_genus | Finding Flags | 2 | |
| kzzm | Network Attacks | 5 | |
| Malka | CERTainly not | 30 | |
| yehuda2233 | Greatest Common Divisor | 15 | |
| ch0k0 | Modular Arithmetic 1 | 20 | |
| sudor269 | Base64 | 10 | |
| liem2008 | Extended GCD | 20 | |
| adanaboshnde | Working with Fields | 10 | |
| SpilledBeans | Everything is Big | 70 | |
| sudor269 | Hex | 5 | |
| wudr | Successive Powers | 60 | |
| sudor269 | ASCII | 5 | |
| sudor269 | Great Snakes | 3 | |
| wudr | Modular Square Root | 35 | |
| Glorionn | Keyed Permutations | 5 | |
| cryptocrasher | SSH Keys | 35 | |
| CryptoHacker_007 | Keyed Permutations | 5 | |
| titideptrai | Modular Exponentiation | 10 | |
| sudor269 | Finding Flags | 2 | |
| sheina906 | Passwords as Keys | 50 | |
| 8l4nk | Too Honest | 50 | |
| huli07 | Symmetry | 50 | |
| Nerx4s93 | Modular Square Root | 35 | |
| Meirm320 | Resisting Bruteforce | 10 | |
| dracarys | Hex | 5 | |
| venkatanaveen | Hex | 5 | |
| maya325shed1 | Modular Arithmetic 2 | 20 | |
| ymoe3 | ECB CBC WTF | 55 | |
| SpilledBeans | Modulus Inutilis | 50 | |
| Meirm320 | Keyed Permutations | 5 | |
| Kreons | Round Keys | 20 | |
| SpilledBeans | Salty | 20 | |
| ayalh123 | Modular Inverting | 25 | |
| sheina906 | Modes of Operation Starter | 15 | |
| shaijulius | Privacy-Enhanced Mail? | 25 | |
| venkatanaveen | ASCII | 5 | |
| titideptrai | Quadratic Residues | 25 | |
| dracarys | ASCII | 5 | |
| Malka | Privacy-Enhanced Mail? | 25 | |
| SpilledBeans | RSA Signatures | 25 | |
| cryptocrasher | CERTainly not | 30 | |
| maya325shed1 | Modular Arithmetic 1 | 20 | |
| ayalh123 | Modular Arithmetic 2 | 20 | |
| enigmacryptodev | Round Keys | 20 | |
| ayalh123 | Modular Arithmetic 1 | 20 | |
| Glorionn | Base64 | 10 | |
| venkatanaveen | Great Snakes | 3 | |
| Galois | Efficient Exchange | 50 | |
| enigmacryptodev | Structure of AES | 15 | |
| Kreons | Structure of AES | 15 |
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