| Date | User | Challenge | Score |
| haider34 | XOR Properties | 15 | |
| DinoGun | Privacy-Enhanced Mail? | 25 | |
| haider34 | XOR Starter | 10 | |
| Belikeok | Finding Flags | 2 | |
| Karev | Efficient Exchange | 50 | |
| Zendex | Base64 | 10 | |
| dirtyDeedz | Endless Emails | 150 | |
| Volsogin | Base64 | 10 | |
| haider34 | Bytes and Big Integers | 10 | |
| Karev | Transparency | 50 | |
| Volsogin | Hex | 5 | |
| impeding9080 | Network Attacks | 5 | |
| Zendex | Hex | 5 | |
| Karev | SSH Keys | 35 | |
| Volsogin | ASCII | 5 | |
| zabilac | Extended GCD | 20 | |
| Volsogin | Great Snakes | 3 | |
| zabilac | Greatest Common Divisor | 15 | |
| Volsogin | Finding Flags | 2 | |
| Karev | CERTainly not | 30 | |
| pypy | Extended GCD | 20 | |
| er75 | XOR Starter | 10 | |
| Zendex | ASCII | 5 | |
| impeding9080 | Great Snakes | 3 | |
| Zendex | Great Snakes | 3 | |
| Mathiyazhagan | Successive Powers | 60 | |
| Sanjeev | Successive Powers | 60 | |
| chelinh | Adrien's Signs | 80 | |
| 156792 | Export-grade | 100 | |
| 156792 | Parameter Injection | 60 | |
| Sanjeev | Chinese Remainder Theorem | 40 | |
| 156792 | Deriving Symmetric Keys | 40 | |
| 156792 | Computing Shared Secrets | 30 | |
| 156792 | Computing Public Values | 25 | |
| Mathiyazhagan | Modular Square Root | 35 | |
| 156792 | Generators of Groups | 20 | |
| 156792 | Working with Fields | 10 | |
| Sanjeev | Modular Square Root | 35 | |
| 156792 | Modulus Inutilis | 50 | |
| 156792 | Salty | 20 | |
| 156792 | Manyprime | 40 | |
| 156792 | Monoprime | 30 | |
| 156792 | Factoring | 15 | |
| 156792 | RSA Signatures | 25 | |
| 156792 | RSA Decryption | 20 | |
| Mathiyazhagan | Legendre Symbol | 35 | |
| 156792 | Private Keys | 20 | |
| Sanjeev | Legendre Symbol | 35 | |
| 156792 | Euler's Totient | 20 | |
| 156792 | Public Keys | 15 |
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