| Date | User | Challenge | Score |
| Chrysa_Mar | Chinese Remainder Theorem | 40 | |
| yousefnusair | XOR Starter | 10 | |
| yannis_m | Diffusion through Permutation | 30 | |
| bechir_x09 | Montgomery's Ladder | 40 | |
| bowie41 | Working with Fields | 10 | |
| yannis_m | Confusion through Substitution | 25 | |
| Chrysa_Mar | Modular Square Root | 35 | |
| Adriana_m_j | Chinese Remainder Theorem | 40 | |
| yannis_m | Round Keys | 20 | |
| yannis_m | Structure of AES | 15 | |
| Jaylagneau | ASCII | 5 | |
| spdziengel | ASCII | 5 | |
| AVDestroyer | LWE Low Bits Message | 20 | |
| yannis_m | Resisting Bruteforce | 10 | |
| Adriana_m_j | Modular Square Root | 35 | |
| AVDestroyer | LWE High Bits Message | 15 | |
| spdziengel | Great Snakes | 3 | |
| Jaylagneau | Great Snakes | 3 | |
| Chrysa_Mar | Legendre Symbol | 35 | |
| Jaylagneau | Finding Flags | 2 | |
| grabczak | Crossed Wires | 100 | |
| Mokir | You either know, XOR you don't | 30 | |
| Chrysa_Mar | Quadratic Residues | 25 | |
| spyder3 | Extended GCD | 20 | |
| vsetti | Inferius Prime | 30 | |
| idk124 | Greatest Common Divisor | 15 | |
| Chrysa_Mar | Modular Inverting | 25 | |
| PatrickL_SC | CTRIME | 70 | |
| Chrysa_Mar | Modular Arithmetic 2 | 20 | |
| GeoPen05 | Secure Protocols | 5 | |
| Mokir | Favourite byte | 20 | |
| eyadKing | Modulus Inutilis | 50 | |
| neki_car67 | Finding Flags | 2 | |
| UrLastWish | Modes of Operation Starter | 15 | |
| Mokir | XOR Properties | 15 | |
| fr1x3r | Modular Arithmetic 1 | 20 | |
| eyadKing | Salty | 20 | |
| radare | The Matrix | 75 | |
| GeoPen05 | JWT Sessions | 10 | |
| GeoPen05 | Token Appreciation | 5 | |
| UrLastWish | Diffusion through Permutation | 30 | |
| idk124 | You either know, XOR you don't | 30 | |
| fr1x3r | Extended GCD | 20 | |
| Mokir | XOR Starter | 10 | |
| whit3g4ndalf | Passwords as Keys | 50 | |
| UrLastWish | Confusion through Substitution | 25 | |
| radare | Script Kiddie | 70 | |
| CryptoCrusader | You either know, XOR you don't | 30 | |
| juul | Finding Flags | 2 | |
| Mokir | Bytes and Big Integers | 10 |
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