| Date | User | Challenge | Score |
| siriusraven | Factoring | 15 | |
| CodeFate | Background Reading | 5 | |
| smoroz | Bytes and Big Integers | 10 | |
| MrCobblepot | Diffusion through Permutation | 30 | |
| ctf_crypto | Extended GCD | 20 | |
| wepsydaisy | Finding Flags | 2 | |
| souley | Modular Square Root | 35 | |
| siriusraven | RSA Signatures | 25 | |
| ctf_crypto | Greatest Common Divisor | 15 | |
| lazyhunt3r | ASCII | 5 | |
| kai2006 | Gaussian Reduction | 50 | |
| mathical0732 | Point Negation | 10 | |
| joacop | Great Snakes | 3 | |
| lazyhunt3r | Great Snakes | 3 | |
| lazyhunt3r | Finding Flags | 2 | |
| souley | Legendre Symbol | 35 | |
| Cristi72 | Lemur XOR | 40 | |
| ctf_crypto | You either know, XOR you don't | 30 | |
| gfahrab | Modular Arithmetic 1 | 20 | |
| kurumi_11 | Bringing It All Together | 50 | |
| smoroz | Base64 | 10 | |
| wyaptw | Diffusion through Permutation | 30 | |
| siriusraven | RSA Decryption | 20 | |
| smoroz | Hex | 5 | |
| gfahrab | Extended GCD | 20 | |
| mofumail | You either know, XOR you don't | 30 | |
| kai2006 | What's a Lattice? | 40 | |
| siriusraven | Private Keys | 20 | |
| wyaptw | Confusion through Substitution | 25 | |
| joacop | Finding Flags | 2 | |
| Happymusmaximus | Great Snakes | 3 | |
| Happymusmaximus | Finding Flags | 2 | |
| wyaptw | Round Keys | 20 | |
| kai2006 | Gram Schmidt | 30 | |
| smoroz | ASCII | 5 | |
| siriusraven | Euler's Totient | 20 | |
| wyaptw | Structure of AES | 15 | |
| siriusraven | Public Keys | 15 | |
| smoroz | Great Snakes | 3 | |
| mathical0732 | Background Reading | 5 | |
| wyaptw | Resisting Bruteforce | 10 | |
| wyaptw | Keyed Permutations | 5 | |
| smoroz | Finding Flags | 2 | |
| wyaptw | Modular Inverting | 25 | |
| wyaptw | Modular Arithmetic 2 | 20 | |
| wyaptw | Modular Arithmetic 1 | 20 | |
| wyaptw | Extended GCD | 20 | |
| kai2006 | Size and Basis | 15 | |
| gfahrab | Greatest Common Divisor | 15 | |
| wyaptw | Greatest Common Divisor | 15 |
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