| Date | User | Challenge | Score |
| b1b00www | Exceptional Curves | 100 | |
| wangcongcong | Adrien's Signs | 80 | |
| solej1980 | ASCII | 5 | |
| Wang_Jianghu | Base64 | 10 | |
| Wang_Jianghu | Hex | 5 | |
| User0069 | Merkle Trees | 25 | |
| spatino | Gaussian Reduction | 50 | |
| zoqueton99 | Base64 | 10 | |
| lapa | Bringing It All Together | 50 | |
| solej1980 | Great Snakes | 3 | |
| zoqueton99 | Hex | 5 | |
| tranchsanto | Bounded Noise | 50 | |
| zoqueton99 | ASCII | 5 | |
| zoqueton99 | Great Snakes | 3 | |
| zoqueton99 | Finding Flags | 2 | |
| User0069 | Pairing-Based Cryptography | 50 | |
| hata | Triple DES | 60 | |
| SpongeBob369 | Passwords as Keys | 50 | |
| solej1980 | Finding Flags | 2 | |
| amdi | Network Attacks | 5 | |
| BasharAhmed | You either know, XOR you don't | 30 | |
| BasharAhmed | Favourite byte | 20 | |
| BasharAhmed | XOR Properties | 15 | |
| amdi | Lemur XOR | 40 | |
| BasharAhmed | XOR Starter | 10 | |
| BasharAhmed | Bytes and Big Integers | 10 | |
| kenza__Romdhani | Encoding Challenge | 40 | |
| Z10UD1 | Manyprime | 40 | |
| SpongeBob369 | Modes of Operation Starter | 15 | |
| BasharAhmed | Base64 | 10 | |
| vyvetsop | Point Addition | 30 | |
| WertherSamsa | Manyprime | 40 | |
| xnhvhv | Lemur XOR | 40 | |
| Husein_Hodzic | You either know, XOR you don't | 30 | |
| vyvetsop | Point Negation | 10 | |
| Husein_Hodzic | Favourite byte | 20 | |
| BasharAhmed | Hex | 5 | |
| mlko | Modular Square Root | 35 | |
| Husein_Hodzic | XOR Properties | 15 | |
| xnhvhv | You either know, XOR you don't | 30 | |
| lapa | Diffusion through Permutation | 30 | |
| Husein_Hodzic | XOR Starter | 10 | |
| ramirmir | Favourite byte | 20 | |
| BasharAhmed | ASCII | 5 | |
| Art1shok | Network Attacks | 5 | |
| BasharAhmed | Great Snakes | 3 | |
| ramirmir | XOR Properties | 15 | |
| Husein_Hodzic | Bytes and Big Integers | 10 | |
| mrx_2323 | Great Snakes | 3 | |
| BasharAhmed | Finding Flags | 2 |
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