| Date | User | Challenge | Score |
| RomanSt | ProSign 3 | 100 | |
| dominicq | Base64 | 10 | |
| dominicq | Hex | 5 | |
| dominicq | ASCII | 5 | |
| T3nk3yyy | Round Keys | 20 | |
| RomanSt | Computing Shared Secrets | 30 | |
| Meri_C | Collider | 50 | |
| RomanSt | Computing Public Values | 25 | |
| RomanSt | Generators of Groups | 20 | |
| sayai | Modular Arithmetic 2 | 20 | |
| RomanSt | Working with Fields | 10 | |
| RomanSt | Modulus Inutilis | 50 | |
| RomanSt | Salty | 20 | |
| RomanSt | Curveball | 100 | |
| RomanSt | Manyprime | 40 | |
| dominicq | Great Snakes | 3 | |
| dominicq | Finding Flags | 2 | |
| RomanSt | Smooth Criminal | 60 | |
| RomanSt | Montgomery's Ladder | 40 | |
| mbexy | Extended GCD | 20 | |
| RomanSt | Efficient Exchange | 50 | |
| RomanSt | Curves and Logs | 40 | |
| RomanSt | Scalar Multiplication | 35 | |
| RomanSt | Point Addition | 30 | |
| RomanSt | Point Negation | 10 | |
| RomanSt | Background Reading | 5 | |
| RomanSt | Monoprime | 30 | |
| RomanSt | Factoring | 15 | |
| RomanSt | RSA Signatures | 25 | |
| Meri_C | Passwords as Keys | 50 | |
| RomanSt | RSA Decryption | 20 | |
| RomanSt | Private Keys | 20 | |
| RomanSt | Euler's Totient | 20 | |
| hadassah | Modular Arithmetic 1 | 20 | |
| lucy54 | Flipping Cookie | 60 | |
| RomanSt | Bringing It All Together | 50 | |
| RomanSt | Diffusion through Permutation | 30 | |
| RomanSt | Confusion through Substitution | 25 | |
| RomanSt | Modular Binomials | 80 | |
| RomanSt | Round Keys | 20 | |
| RomanSt | Structure of AES | 15 | |
| RomanSt | Modular Arithmetic 2 | 20 | |
| RomanSt | Extended GCD | 20 | |
| mbexy | Greatest Common Divisor | 15 | |
| aisitihalimah | Legendre Symbol | 35 | |
| aisitihalimah | Quadratic Residues | 25 | |
| 0xfr0ggy | Finding Flags | 2 | |
| shmil123 | Adrien's Signs | 80 | |
| aisitihalimah | Transparency | 50 | |
| ATB | Finding Flags | 2 |
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