| Date | User | Challenge | Score |
| Ap4sh | Megalomaniac 2 | 120 | |
| MatWoj99 | Round Keys | 20 | |
| nurminen | Edwards Goes Degenerate | 100 | |
| sujin | Pairing-Based Cryptography | 50 | |
| sujin | OR Proof | 75 | |
| sujin | OR Proof (CryptoHack) | 0 | |
| Tungluong2004 | Confusion through Substitution | 25 | |
| mmzjqx | Resisting Bruteforce | 10 | |
| nurminen | Double and Broken | 50 | |
| trantho1601 | Legendre Symbol | 35 | |
| B00177171 | Efficient Exchange | 50 | |
| catalin_munteanu | Triple DES | 60 | |
| mmzjqx | Keyed Permutations | 5 | |
| nurminen | No Random, No Bias | 120 | |
| anchi1228 | Round Keys | 20 | |
| B00177171 | Curves and Logs | 40 | |
| lucknera | Parameter Injection | 60 | |
| B00177171 | Scalar Multiplication | 35 | |
| B00177171 | Point Addition | 30 | |
| isckra | Finding Flags | 2 | |
| B00177171 | Point Negation | 10 | |
| catalin_munteanu | Lazy CBC | 60 | |
| B00177171 | Background Reading | 5 | |
| ahmqd | LWE Intro | 10 | |
| Scarlylion | Hex | 5 | |
| MatWoj99 | Structure of AES | 15 | |
| ahmqd | LWE Background | 5 | |
| Parag | RSA Signatures | 25 | |
| catalin_munteanu | Flipping Cookie | 60 | |
| medb | Authenticated Handshake | 40 | |
| zipill | Legendre Symbol | 35 | |
| catalin_munteanu | ECB Oracle | 60 | |
| Tsukishima_shiji | Smooth Criminal | 60 | |
| jakobKL | Passwords as Keys | 50 | |
| ahmqd | Bean Counter | 60 | |
| Mrsh1014 | Gaussian Reduction | 50 | |
| JudahTear | Finding Flags | 2 | |
| Saschatouille | Bruce Schneier's Password | 100 | |
| nora22 | Modes of Operation Starter | 15 | |
| Sebastian_Roessl | Modes of Operation Starter | 15 | |
| Thaimeo2006 | Network Attacks | 5 | |
| waterfull | Triple DES | 60 | |
| silentRoar | Point Negation | 10 | |
| ludwigB | Modes of Operation Starter | 15 | |
| catalin_munteanu | ECB CBC WTF | 55 | |
| macaw | Base64 | 10 | |
| anchi1228 | Structure of AES | 15 | |
| Niklas6616 | Modes of Operation Starter | 15 | |
| r0bespierre | Base64 | 10 | |
| r0bespierre | Hex | 5 |
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