| Date | User | Challenge | Score |
| joao_nogueira | Efficient Exchange | 50 | |
| M_ndinda | You either know, XOR you don't | 30 | |
| M_ndinda | Favourite byte | 20 | |
| ByGouDex | ECB Oracle | 60 | |
| ByGouDex | Passwords as Keys | 50 | |
| ByGouDex | Modes of Operation Starter | 15 | |
| ByGouDex | Bringing It All Together | 50 | |
| ByGouDex | Diffusion through Permutation | 30 | |
| ByGouDex | Confusion through Substitution | 25 | |
| ByGouDex | Round Keys | 20 | |
| M_ndinda | XOR Properties | 15 | |
| ByGouDex | Structure of AES | 15 | |
| ByGouDex | Resisting Bruteforce | 10 | |
| M_ndinda | XOR Starter | 10 | |
| ByGouDex | Keyed Permutations | 5 | |
| M_ndinda | Bytes and Big Integers | 10 | |
| ys512 | You either know, XOR you don't | 30 | |
| M_ndinda | Base64 | 10 | |
| JoseAEspinoza | XOR Starter | 10 | |
| 0xRaha | Extended GCD | 20 | |
| M_ndinda | Hex | 5 | |
| M_ndinda | ASCII | 5 | |
| joao_nogueira | Curves and Logs | 40 | |
| M_ndinda | Great Snakes | 3 | |
| 0xRaha | Greatest Common Divisor | 15 | |
| avenegas17 | Modular Arithmetic 1 | 20 | |
| avenegas17 | Greatest Common Divisor | 15 | |
| M_ndinda | Finding Flags | 2 | |
| avenegas17 | Favourite byte | 20 | |
| 0xRaha | You either know, XOR you don't | 30 | |
| M_ndinda | Modular Binomials | 80 | |
| JoseAEspinoza | Encoding Challenge | 40 | |
| avenegas17 | XOR Properties | 15 | |
| avenegas17 | XOR Starter | 10 | |
| M_ndinda | Adrien's Signs | 80 | |
| usagi143 | Round Keys | 20 | |
| 0xRaha | Favourite byte | 20 | |
| avenegas17 | Encoding Challenge | 40 | |
| avenegas17 | Bytes and Big Integers | 10 | |
| NJohnsonCR | Encoding Challenge | 40 | |
| monjut | Moving Problems | 150 | |
| M_ndinda | Chinese Remainder Theorem | 40 | |
| M_ndinda | Modular Square Root | 35 | |
| M_ndinda | Legendre Symbol | 35 | |
| JoseAEspinoza | Bytes and Big Integers | 10 | |
| dotton2 | XOR Starter | 10 | |
| Vr360_ | Great Snakes | 3 | |
| Rotoplas | Finding Flags | 2 | |
| Wiktorex | Base64 | 10 | |
| monjut | ProSign 3 | 100 |
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