| Date | User | Challenge | Score |
| jlm | Bytes and Big Integers | 10 | |
| Meen4 | Curveball | 100 | |
| TallerGiraffe | XOR Properties | 15 | |
| kanellam | Modes of Operation Starter | 15 | |
| lumpy | Keyed Permutations | 5 | |
| pc417 | Salty | 20 | |
| shaked_srabstein | Modular Arithmetic 2 | 20 | |
| chaosad | You either know, XOR you don't | 30 | |
| pc417 | Manyprime | 40 | |
| Fartdog_72 | Favourite byte | 20 | |
| Fartdog_72 | XOR Properties | 15 | |
| ShadowRich | Greatest Common Divisor | 15 | |
| Fartdog_72 | XOR Starter | 10 | |
| kakobtg | Modular Binomials | 80 | |
| Fartdog_72 | Great Snakes | 3 | |
| kakobtg | Adrien's Signs | 80 | |
| pc417 | Monoprime | 30 | |
| cryforme | Lemur XOR | 40 | |
| Diablo_69 | Modes of Operation Starter | 15 | |
| Banana_Babanana | Exceptional Curves | 100 | |
| TallerGiraffe | XOR Starter | 10 | |
| kakobtg | Chinese Remainder Theorem | 40 | |
| emannem | Modular Inverting | 25 | |
| kakobtg | Modular Square Root | 35 | |
| emannem | Modular Arithmetic 2 | 20 | |
| wgao4000 | Deriving Symmetric Keys | 40 | |
| w4llnut | Legendre Symbol | 35 | |
| pc417 | Factoring | 15 | |
| Steftsis | Modular Binomials | 80 | |
| Horhe | Quadratic Residues | 25 | |
| kakobtg | Legendre Symbol | 35 | |
| Steftsis | Modes of Operation Starter | 15 | |
| kakobtg | Quadratic Residues | 25 | |
| Steftsis | Token Appreciation | 5 | |
| cryforme | You either know, XOR you don't | 30 | |
| kakobtg | Modular Inverting | 25 | |
| kakobtg | Modular Arithmetic 2 | 20 | |
| kakobtg | Modular Arithmetic 1 | 20 | |
| Diablo_69 | Bringing It All Together | 50 | |
| wgao4000 | Computing Shared Secrets | 30 | |
| wgao4000 | Computing Public Values | 25 | |
| kakobtg | Extended GCD | 20 | |
| Banana_Babanana | Smooth Criminal | 60 | |
| wgao4000 | Generators of Groups | 20 | |
| Diablo_69 | Diffusion through Permutation | 30 | |
| Fartdog_72 | Bytes and Big Integers | 10 | |
| kakobtg | Greatest Common Divisor | 15 | |
| Fartdog_72 | Base64 | 10 | |
| doghhy | Base64 | 10 | |
| Fartdog_72 | Hex | 5 |
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