| Date | User | Challenge | Score |
| new2 | Generators of Groups | 20 | |
| pepperoni21 | Resisting Bruteforce | 10 | |
| rush_i | Modular Square Root | 35 | |
| alexjj | Great Snakes | 3 | |
| aliarkan | Base64 | 10 | |
| Amat2s | Modes of Operation Starter | 15 | |
| pepperoni21 | Keyed Permutations | 5 | |
| SMAYLA | Quadratic Residues | 25 | |
| x314x | Modular Arithmetic 1 | 20 | |
| ub_krypto_25_04 | Resisting Bruteforce | 10 | |
| Amat2s | Bringing It All Together | 50 | |
| ub_krypto_25_04 | Keyed Permutations | 5 | |
| luegac21 | Round Keys | 20 | |
| bncybz | Extended GCD | 20 | |
| Quine | Find the Lattice | 100 | |
| x314x | Extended GCD | 20 | |
| rizz061 | XOR Starter | 10 | |
| qthang | Export-grade | 100 | |
| ub_krypto_25_04 | Finding Flags | 2 | |
| Clear | ASCII | 5 | |
| Clear | Great Snakes | 3 | |
| rizz061 | Bytes and Big Integers | 10 | |
| Onigiri2 | RSA Backdoor Viability | 175 | |
| bncybz | Greatest Common Divisor | 15 | |
| Clear | Finding Flags | 2 | |
| F0rhex | Manyprime | 40 | |
| huilisaur | ASCII | 5 | |
| huilisaur | Great Snakes | 3 | |
| Amat2s | Diffusion through Permutation | 30 | |
| bncybz | Lemur XOR | 40 | |
| x314x | Greatest Common Divisor | 15 | |
| pepperoni21 | Modular Binomials | 80 | |
| luegac21 | Structure of AES | 15 | |
| Suhas_s | Quadratic Residues | 25 | |
| Onigiri2 | Ron was Wrong, Whit is Right | 90 | |
| x314x | You either know, XOR you don't | 30 | |
| alienkeric | Merkle Trees | 25 | |
| Suhas_s | Modular Inverting | 25 | |
| QwQll | Parameter Injection | 60 | |
| Quine | Gaussian Reduction | 50 | |
| UZI_SMG | Base64 | 10 | |
| Suhas_s | Modular Arithmetic 2 | 20 | |
| shhack96 | Modulus Inutilis | 50 | |
| Usungmagic | Point Negation | 10 | |
| x314x | Favourite byte | 20 | |
| F0rhex | Monoprime | 30 | |
| QwQll | Deriving Symmetric Keys | 40 | |
| Nish | ASCII | 5 | |
| x314x | XOR Properties | 15 | |
| shhack96 | Salty | 20 |
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