| Date | User | Challenge | Score |
| vox | Crossed Wires | 100 | |
| anes234 | Private Keys | 20 | |
| 54md4n1 | Modular Arithmetic 2 | 20 | |
| AzureOrtis | You either know, XOR you don't | 30 | |
| pinkballoons | Lazy CBC | 60 | |
| anes234 | Euler's Totient | 20 | |
| toliphye | XOR Starter | 10 | |
| anes234 | Public Keys | 15 | |
| chmaster | Token Appreciation | 5 | |
| anes234 | Modular Exponentiation | 10 | |
| alexjmead | Private Keys | 20 | |
| CyprienA | Finding Flags | 2 | |
| csmjdeve | Finding Flags | 2 | |
| Cryptic_Hermoine | Quadratic Residues | 25 | |
| The_cocogun | RSA Decryption | 20 | |
| yrighting | Network Attacks | 5 | |
| ZJ | Saying Hello | 20 | |
| chmaster | Collider | 50 | |
| Qu1n7as | Everything is Big | 70 | |
| Qu1n7as | Modulus Inutilis | 50 | |
| The_cocogun | Private Keys | 20 | |
| Melon_N | You either know, XOR you don't | 30 | |
| up_chs | Favourite byte | 20 | |
| Qu1n7as | Salty | 20 | |
| toliphye | Bytes and Big Integers | 10 | |
| Cryptic_Hermoine | Modular Inverting | 25 | |
| Cryptic_Hermoine | Modular Arithmetic 2 | 20 | |
| Yahya_Mansoub | RSA Decryption | 20 | |
| Qu1n7as | Manyprime | 40 | |
| anes234 | Jack's Birthday Confusion | 30 | |
| rainytuesday | Modes of Operation Starter | 15 | |
| Cryptic_Hermoine | Extended GCD | 20 | |
| Qu1n7as | Square Eyes | 35 | |
| The_cocogun | Euler's Totient | 20 | |
| Qu1n7as | Monoprime | 30 | |
| Qu1n7as | Inferius Prime | 30 | |
| Qu1n7as | Factoring | 15 | |
| up_chs | XOR Properties | 15 | |
| kzzm | Paper Plane | 120 | |
| Qu1n7as | RSA Signatures | 25 | |
| The_cocogun | Public Keys | 15 | |
| OranS | Bringing It All Together | 50 | |
| OranS | Diffusion through Permutation | 30 | |
| OranS | Confusion through Substitution | 25 | |
| toliphye | Base64 | 10 | |
| OranS | Round Keys | 20 | |
| OranS | Structure of AES | 15 | |
| OranS | Resisting Bruteforce | 10 | |
| anes234 | Jack's Birthday Hash | 20 | |
| yrighting | Greatest Common Divisor | 15 |
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