| Date | User | Challenge | Score |
| AllanPoe | Modular Arithmetic 2 | 20 | |
| PatrickL_SC | Export-grade | 100 | |
| algatha | Modular Inverting | 25 | |
| AllanPoe | Modular Arithmetic 1 | 20 | |
| namdang | Bit by Bit | 100 | |
| G33KR34P3R | Base64 | 10 | |
| G33KR34P3R | Hex | 5 | |
| abinnn | Bytes and Big Integers | 10 | |
| G33KR34P3R | ASCII | 5 | |
| G33KR34P3R | Great Snakes | 3 | |
| Dr1o02 | Modular Exponentiation | 10 | |
| Dr1o02 | ECB Oracle | 60 | |
| Rishika24 | Chinese Remainder Theorem | 40 | |
| Dr1o02 | Flipping Cookie | 60 | |
| Dr1o02 | ECB CBC WTF | 55 | |
| algatha | Modular Arithmetic 2 | 20 | |
| algatha | Modular Arithmetic 1 | 20 | |
| Dr1o02 | Passwords as Keys | 50 | |
| warid_Abde | Modular Exponentiation | 10 | |
| diya_123 | ASCII | 5 | |
| algatha | Extended GCD | 20 | |
| Xelaa | ASCII | 5 | |
| diya_123 | Great Snakes | 3 | |
| b24oy | Hex | 5 | |
| diya_123 | Finding Flags | 2 | |
| Nenaah | Authentification 1 (Breizh CTF) | 0 | |
| TruongChoiCryp | You either know, XOR you don't | 30 | |
| ZeroK | XOR Starter | 10 | |
| algatha | Greatest Common Divisor | 15 | |
| DANHPHUC | ASCII | 5 | |
| G33KR34P3R | Finding Flags | 2 | |
| AllanPoe | Extended GCD | 20 | |
| CyberSch0lar | Base64 | 10 | |
| CyberSch0lar | Hex | 5 | |
| CyberSch0lar | ASCII | 5 | |
| ThinhDost | Encoding Challenge | 40 | |
| Xelaa | Great Snakes | 3 | |
| DANHPHUC | Great Snakes | 3 | |
| DANHPHUC | Finding Flags | 2 | |
| User0069 | Static Client 2 | 120 | |
| skiller3478 | Modular Binomials | 80 | |
| BOTk | Finding Flags | 2 | |
| flouxtine | RSA Backdoor Viability | 175 | |
| flouxtine | Ron was Wrong, Whit is Right | 90 | |
| AllanPoe | Greatest Common Divisor | 15 | |
| BayronJimenez | You either know, XOR you don't | 30 | |
| BayronJimenez | Favourite byte | 20 | |
| trantho1601 | Extended GCD | 20 | |
| flouxtine | Fast Primes | 75 | |
| mrgeek | You either know, XOR you don't | 30 |
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