| Date | User | Challenge | Score |
| rayenoudaa | Base64 | 10 | |
| rolanp | Bytes and Big Integers | 10 | |
| MarwaGuiniche | Modular Inverting | 25 | |
| josephromero83 | Finding Flags | 2 | |
| xfnx | Meet me in the Claw | 120 | |
| MarwaGuiniche | Modular Arithmetic 2 | 20 | |
| ub_krypto_25_12 | Euler's Totient | 20 | |
| ub_krypto_25_12 | Public Keys | 15 | |
| MarwaGuiniche | Modular Arithmetic 1 | 20 | |
| rayenoudaa | Hex | 5 | |
| ub_krypto_25_12 | Modular Exponentiation | 10 | |
| MarwaGuiniche | Extended GCD | 20 | |
| d3f4ult2_0 | Keyed Permutations | 5 | |
| Beethoven3 | Pad Thai | 80 | |
| s0ngbird | Diffusion through Permutation | 30 | |
| MarwaGuiniche | Greatest Common Divisor | 15 | |
| ABDELHAK95 | Base64 | 10 | |
| Mycr0ft | XOR Starter | 10 | |
| 7_One_That | Bytes and Big Integers | 10 | |
| wcmason | Modular Arithmetic 2 | 20 | |
| doublejue | Private Keys | 20 | |
| AX17LB03 | Finding Flags | 2 | |
| s4lmon | Checkpoint | 150 | |
| JellyGames | Modular Binomials | 80 | |
| Hib00boo | Everything is Big | 70 | |
| rolanp | Base64 | 10 | |
| 0xmvmd | XOR Properties | 15 | |
| yeyiux | Bytes and Big Integers | 10 | |
| ub_krypto_25_12 | Working with Fields | 10 | |
| Mycr0ft | Bytes and Big Integers | 10 | |
| kaneman_of_zero | Quadratic Residues | 25 | |
| doublejue | Euler's Totient | 20 | |
| ub_krypto_20 | RSA Signatures | 25 | |
| ub_krypto_25_12 | Round Keys | 20 | |
| Zebr0s | Modular Binomials | 80 | |
| Codelearner556 | Finding Flags | 2 | |
| yeyiux | Base64 | 10 | |
| Zebr0s | Adrien's Signs | 80 | |
| averyhoch | Favourite byte | 20 | |
| Kenny_22 | Base64 | 10 | |
| rolanp | Hex | 5 | |
| kaneman_of_zero | Modular Inverting | 25 | |
| Kenny_22 | Hex | 5 | |
| ub_krypto_17 | RSA Decryption | 20 | |
| Mycr0ft | Base64 | 10 | |
| ub_krypto_17 | Private Keys | 20 | |
| averyhoch | XOR Properties | 15 | |
| kaneman_of_zero | Modular Arithmetic 2 | 20 | |
| Baroad | Base64 | 10 | |
| Zebr0s | Chinese Remainder Theorem | 40 |
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