| Date | User | Challenge | Score |
| callmelucky07 | Quadratic Residues | 25 | |
| Mutiaaa | Deriving Symmetric Keys | 40 | |
| thisnello | Script Kiddie | 70 | |
| Mutiaaa | Computing Shared Secrets | 30 | |
| Mutiaaa | Computing Public Values | 25 | |
| susanto | Manyprime | 40 | |
| Mutiaaa | Generators of Groups | 20 | |
| Mutiaaa | Working with Fields | 10 | |
| DhamoZx | Successive Powers | 60 | |
| Mutiaaa | Modulus Inutilis | 50 | |
| quadfire | Resisting Bruteforce | 10 | |
| Mutiaaa | Salty | 20 | |
| miiyen | Blinding Light | 120 | |
| Mutiaaa | Manyprime | 40 | |
| susanto | Export-grade | 100 | |
| Overflow | Smooth Criminal | 60 | |
| quadfire | Keyed Permutations | 5 | |
| Mutiaaa | Monoprime | 30 | |
| RIZKYFAJAR21 | Vote for Pedro | 150 | |
| Mutiaaa | Factoring | 15 | |
| Mutiaaa | RSA Signatures | 25 | |
| Mutiaaa | RSA Decryption | 20 | |
| Mutiaaa | Private Keys | 20 | |
| Mutiaaa | Euler's Totient | 20 | |
| Mutiaaa | Public Keys | 15 | |
| Mutiaaa | Modular Exponentiation | 10 | |
| Mutiaaa | Bean Counter | 60 | |
| Mutiaaa | Symmetry | 50 | |
| SAATVIK | Encoding Challenge | 40 | |
| Mutiaaa | Flipping Cookie | 60 | |
| Giovanni2004 | Moving Problems | 150 | |
| Mutiaaa | ECB CBC WTF | 55 | |
| Mutiaaa | ECB Oracle | 60 | |
| DraakaaDwixa | Modular Inverting | 25 | |
| susanto | Parameter Injection | 60 | |
| Ravage0664 | Extended GCD | 20 | |
| susanto | Deriving Symmetric Keys | 40 | |
| Lagg0s | ASCII | 5 | |
| blueketchup | Flipping Cookie | 60 | |
| Mutiaaa | Passwords as Keys | 50 | |
| susanto | Computing Shared Secrets | 30 | |
| Mutiaaa | Modes of Operation Starter | 15 | |
| susanto | Computing Public Values | 25 | |
| OblivionX | Finding Flags | 2 | |
| DhamoZx | Chinese Remainder Theorem | 40 | |
| susanto | Generators of Groups | 20 | |
| tortoiseseadonut | XOR Properties | 15 | |
| susanto | Working with Fields | 10 | |
| thisnello | Triple DES | 60 | |
| sanya338 | Export-grade | 100 |
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