| Date | User | Challenge | Score |
| sherwynd | ECB CBC WTF | 55 | |
| test_dhkt | RSA Signatures | 25 | |
| idoHerojn | Finding Flags | 2 | |
| Mote | Signing Server | 60 | |
| test_dhkt | Square Eyes | 35 | |
| DuongKiet | Beatboxer | 150 | |
| cornn_123 | Modular Square Root | 35 | |
| test_dhkt | Public Keys | 15 | |
| hata | Successive Powers | 60 | |
| GroGod | Euler's Totient | 20 | |
| GroGod | Public Keys | 15 | |
| sherwynd | ECB Oracle | 60 | |
| GroGod | Modular Exponentiation | 10 | |
| MinhBoss | The Matrix | 75 | |
| GroGod | LWE Background | 5 | |
| Tekq14 | Deriving Symmetric Keys | 40 | |
| DuongKiet | Forbidden Fruit | 150 | |
| GroGod | What's a Lattice? | 40 | |
| GroGod | Size and Basis | 15 | |
| GroGod | Vectors | 10 | |
| KA183R | Hex | 5 | |
| DuongKiet | Paper Plane | 120 | |
| Mote | Null or Never | 100 | |
| tndbang | Roll your Own | 125 | |
| sgrenz | Everything is Still Big | 100 | |
| GroGod | Round Keys | 20 | |
| sgrenz | Crossed Wires | 100 | |
| GroGod | Structure of AES | 15 | |
| VincentZeng | Finding Flags | 2 | |
| th4ont | Extended GCD | 20 | |
| shurayz | Prime and Prejudice | 200 | |
| tndbang | Export-grade | 100 | |
| Tekq14 | Computing Shared Secrets | 30 | |
| KA183R | ASCII | 5 | |
| Stephen_A | Collider | 50 | |
| GroGod | Resisting Bruteforce | 10 | |
| Stephen_A | Secure Protocols | 5 | |
| tndbang | Let's Decrypt Again | 175 | |
| Mote | Bespoke Padding | 100 | |
| th4ont | Greatest Common Divisor | 15 | |
| sgrenz | Everything is Big | 70 | |
| test_dhkt | CTRIME | 70 | |
| tndbang | The Matrix Reloaded | 100 | |
| sgrenz | Modulus Inutilis | 50 | |
| Nho | Oh SNAP | 120 | |
| sgrenz | Square Eyes | 35 | |
| Stephen_A | JWT Secrets | 25 | |
| Stephen_A | No Way JOSE | 20 | |
| Kimvo | Bespoke Padding | 100 | |
| sgrenz | Inferius Prime | 30 |
You are now level Current level