| Date | User | Challenge | Score |
| naufalnajieb | Base64 | 10 | |
| vbaned | Factoring | 15 | |
| Chocezzy | Modular Arithmetic 2 | 20 | |
| KamalSaif | Public Keys | 15 | |
| KamalSaif | Modular Exponentiation | 10 | |
| rabb1t | Adrien's Signs | 80 | |
| jnflx41 | Bytes and Big Integers | 10 | |
| KamalSaif | Diffusion through Permutation | 30 | |
| ngynmq | OR Proof (CryptoHack) | 0 | |
| ngynmq | OR Proof | 75 | |
| augustourqui | Base64 | 10 | |
| KamalSaif | Confusion through Substitution | 25 | |
| naufalnajieb | Hex | 5 | |
| HeavyGoat | XOR Starter | 10 | |
| KamalSaif | Round Keys | 20 | |
| KamalSaif | Structure of AES | 15 | |
| HeavyGoat | Bytes and Big Integers | 10 | |
| KamalSaif | Resisting Bruteforce | 10 | |
| KamalSaif | Keyed Permutations | 5 | |
| KamalSaif | Modular Binomials | 80 | |
| rabb1t | Chinese Remainder Theorem | 40 | |
| zszs321321 | Base64 | 10 | |
| HeavyGoat | Base64 | 10 | |
| pc417 | Let's Decrypt | 80 | |
| rfmph | Monoprime | 30 | |
| tiduseleven | Gram Schmidt | 30 | |
| KamalSaif | Adrien's Signs | 80 | |
| matraz60 | Legendre Symbol | 35 | |
| geuple | Bean Counter | 60 | |
| zszs321321 | Hex | 5 | |
| geuple | Symmetry | 50 | |
| KamalSaif | Chinese Remainder Theorem | 40 | |
| KamalSaif | Modular Square Root | 35 | |
| geuple | Flipping Cookie | 60 | |
| HeavyGoat | Hex | 5 | |
| nisedo | XOR Properties | 15 | |
| geuple | ECB CBC WTF | 55 | |
| KamalSaif | Legendre Symbol | 35 | |
| mariaflu | Favourite byte | 20 | |
| geuple | ECB Oracle | 60 | |
| rfmph | Factoring | 15 | |
| HeavyGoat | ASCII | 5 | |
| HeavyGoat | Great Snakes | 3 | |
| KamalSaif | Quadratic Residues | 25 | |
| KamalSaif | Modular Inverting | 25 | |
| KamalSaif | Modular Arithmetic 2 | 20 | |
| rabb1t | Modular Square Root | 35 | |
| KamalSaif | Modular Arithmetic 1 | 20 | |
| linaaaaaaaaaaaaa | Great Snakes | 3 | |
| KamalSaif | Extended GCD | 20 |
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