| Date | User | Challenge | Score |
| nikos_nif | Private Keys | 20 | |
| satvika | Bytes and Big Integers | 10 | |
| nikos_nif | Euler's Totient | 20 | |
| weir | Great Snakes | 3 | |
| nikos_nif | Public Keys | 15 | |
| NickZolotas | Point Negation | 10 | |
| nikos_nif | Modular Exponentiation | 10 | |
| weir | Finding Flags | 2 | |
| bomboclatpanos | Privacy-Enhanced Mail? | 25 | |
| NickZolotas | Quadratic Residues | 25 | |
| bomboclatpanos | Modular Inverting | 25 | |
| DimitrisKafouros | SSH Keys | 35 | |
| bomboclatpanos | Modular Arithmetic 2 | 20 | |
| DimitrisKafouros | CERTainly not | 30 | |
| bomboclatpanos | Modular Arithmetic 1 | 20 | |
| Mejkl | Too Honest | 50 | |
| satvika | Base64 | 10 | |
| NickZolotas | LWE Background | 5 | |
| DIMITRISMANIATIS | You either know, XOR you don't | 30 | |
| DimitrisKafouros | Privacy-Enhanced Mail? | 25 | |
| NickZolotas | Size and Basis | 15 | |
| Shikari | Hex | 5 | |
| NickZolotas | Vectors | 10 | |
| bomboclatpanos | Extended GCD | 20 | |
| NickZolotas | ZKP Introduction | 5 | |
| Giorgio_Gui | Round Keys | 20 | |
| DimitrisKafouros | Modular Inverting | 25 | |
| Shikari | ASCII | 5 | |
| bomboclatpanos | Greatest Common Divisor | 15 | |
| Shikari | Great Snakes | 3 | |
| DimitrisKafouros | Modular Arithmetic 2 | 20 | |
| bertholdus | Greatest Common Divisor | 15 | |
| ElShiikh | Bytes and Big Integers | 10 | |
| nizarr | Modes of Operation Starter | 15 | |
| DimitrisKafouros | Modular Arithmetic 1 | 20 | |
| bertholdus | You either know, XOR you don't | 30 | |
| Soupi0x | No Way Back Home | 100 | |
| DimitrisKafouros | Extended GCD | 20 | |
| bertholdus | Favourite byte | 20 | |
| DimitrisKafouros | Greatest Common Divisor | 15 | |
| NickZolotas | Modes of Operation Starter | 15 | |
| ElShiikh | Base64 | 10 | |
| AVitali | Chinese Remainder Theorem | 40 | |
| NickZolotas | You either know, XOR you don't | 30 | |
| darththucydides | Signing Server | 60 | |
| urmanov | Great Snakes | 3 | |
| ElShiikh | Hex | 5 | |
| darththucydides | Infinite Descent | 50 | |
| bomboclatpanos | Lemur XOR | 40 | |
| DimitrisKafouros | Lemur XOR | 40 |
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