| Date | User | Challenge | Score |
| Eralyen | Resisting Bruteforce | 10 | |
| la_vltk | Quadratic Residues | 25 | |
| 0xB4DFL4G | Curves and Logs | 40 | |
| Eralyen | Keyed Permutations | 5 | |
| la_vltk | Modular Inverting | 25 | |
| la_vltk | Modular Arithmetic 2 | 20 | |
| la_vltk | Modular Arithmetic 1 | 20 | |
| la_vltk | Extended GCD | 20 | |
| Eralyen | Modular Binomials | 80 | |
| Felinehumanoid | Round Keys | 20 | |
| zig0ta | You either know, XOR you don't | 30 | |
| OrestisL | Bringing It All Together | 50 | |
| mishustick | Round Keys | 20 | |
| de4dhorse | XOR Starter | 10 | |
| B1rS0 | Modular Arithmetic 2 | 20 | |
| Felinehumanoid | Structure of AES | 15 | |
| B1rS0 | Modular Arithmetic 1 | 20 | |
| B1rS0 | Extended GCD | 20 | |
| Alain1221 | Modular Square Root | 35 | |
| agrocos | You either know, XOR you don't | 30 | |
| B1rS0 | Greatest Common Divisor | 15 | |
| 7ades | Favourite byte | 20 | |
| zig0ta | Favourite byte | 20 | |
| Rellik | Quadratic Residues | 25 | |
| Berwa_Ian_Ange | Legendre Symbol | 35 | |
| RSA_Phantom | Bytes and Big Integers | 10 | |
| zig0ta | XOR Properties | 15 | |
| Gravalos | Too Honest | 50 | |
| mostafa3009 | Encoding Challenge | 40 | |
| la_vltk | Greatest Common Divisor | 15 | |
| dewydemi | Finding Flags | 2 | |
| zhangw3334 | Hash Stuffing | 50 | |
| la_vltk | You either know, XOR you don't | 30 | |
| bobiealice | Armory | 100 | |
| Voxa | Computing Shared Secrets | 30 | |
| Voxa | Computing Public Values | 25 | |
| ow3 | Generators of Groups | 20 | |
| B1rS0 | Network Attacks | 5 | |
| zhfps | Triple DES | 60 | |
| Gravalos | Non-Interactive | 35 | |
| Voxa | Generators of Groups | 20 | |
| rev_cryp | Bringing It All Together | 50 | |
| canfshmicrowave | CTRIME | 70 | |
| angel112aa4 | Modular Inverting | 25 | |
| angel112aa4 | Modular Arithmetic 2 | 20 | |
| RSA_Phantom | Base64 | 10 | |
| la_vltk | Favourite byte | 20 | |
| angel112aa4 | Modular Arithmetic 1 | 20 | |
| B1rS0 | You either know, XOR you don't | 30 | |
| Waeel79 | Additive | 70 |
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