| Date | User | Challenge | Score |
| hakka52 | Meet me in the Claw | 120 | |
| MohamedMujahed | Passwords as Keys | 50 | |
| MohamedMujahed | Modes of Operation Starter | 15 | |
| Giovanni2004 | Triple DES | 60 | |
| MohamedMujahed | Bringing It All Together | 50 | |
| MohamedMujahed | Diffusion through Permutation | 30 | |
| MohamedMujahed | Confusion through Substitution | 25 | |
| MahmoodTavafoghi | Legendre Symbol | 35 | |
| MohamedMujahed | Round Keys | 20 | |
| MohamedMujahed | Structure of AES | 15 | |
| MohamedMujahed | Resisting Bruteforce | 10 | |
| MohamedMujahed | Keyed Permutations | 5 | |
| PAWOS | No Way Back Home | 100 | |
| MohamedMujahed | Modular Binomials | 80 | |
| MohamedMujahed | Adrien's Signs | 80 | |
| MohamedMujahed | Chinese Remainder Theorem | 40 | |
| MohamedMujahed | Modular Square Root | 35 | |
| feynhat | Curves and Logs | 40 | |
| MrYacin | Greatest Common Divisor | 15 | |
| Giovanni2004 | Lazy CBC | 60 | |
| MohamedMujahed | Legendre Symbol | 35 | |
| MohamedMujahed | Quadratic Residues | 25 | |
| MohamedMujahed | Modular Inverting | 25 | |
| TrouthieCryptHk | Diffusion through Permutation | 30 | |
| MohamedMujahed | Modular Arithmetic 2 | 20 | |
| MohamedMujahed | Modular Arithmetic 1 | 20 | |
| MohamedMujahed | Extended GCD | 20 | |
| MohamedMujahed | Greatest Common Divisor | 15 | |
| huitrebleu | Legendre Symbol | 35 | |
| MahmoodTavafoghi | Quadratic Residues | 25 | |
| 0xM0HS3N | You either know, XOR you don't | 30 | |
| 0xM0HS3N | Favourite byte | 20 | |
| Brad3017 | Export-grade | 100 | |
| andy2589977 | Base64 | 10 | |
| feynhat | Scalar Multiplication | 35 | |
| huitrebleu | Quadratic Residues | 25 | |
| sadmin | RSA or HMAC? Part 2 | 100 | |
| MahmoodTavafoghi | Modular Inverting | 25 | |
| andy2589977 | Hex | 5 | |
| Giovanni2004 | Encoding Challenge | 40 | |
| nataliasst | Great Snakes | 3 | |
| sahanab07 | Base64 | 10 | |
| MahmoodTavafoghi | Modular Arithmetic 2 | 20 | |
| andy2589977 | ASCII | 5 | |
| crowcell | Legendre Symbol | 35 | |
| andy2589977 | Great Snakes | 3 | |
| Giovanni2004 | Transparency | 50 | |
| luxphovida | Modular Arithmetic 1 | 20 | |
| luxphovida | Extended GCD | 20 | |
| andy2589977 | Finding Flags | 2 |
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