| Date | User | Challenge | Score |
| banbet | Base64 | 10 | |
| banbet | Hex | 5 | |
| banbet | ASCII | 5 | |
| banbet | Great Snakes | 3 | |
| andcdc | Resisting Bruteforce | 10 | |
| andcdc | Keyed Permutations | 5 | |
| banbet | Finding Flags | 2 | |
| space_invader | TLS Handshake | 15 | |
| hoomishalom | Favourite byte | 20 | |
| hoomishalom | XOR Properties | 15 | |
| hoomishalom | XOR Starter | 10 | |
| space_invader | Sharks on the Wire | 10 | |
| ch1sk3ly | Modulus Inutilis | 50 | |
| hoomishalom | Let's Decrypt | 80 | |
| ch1sk3ly | Salty | 20 | |
| andremelo | XOR Properties | 15 | |
| ch1sk3ly | Manyprime | 40 | |
| ch1sk3ly | Square Eyes | 35 | |
| devliar | XOR Starter | 10 | |
| Woodsman | Bringing It All Together | 50 | |
| nika7878 | Finding Flags | 2 | |
| devliar | Bytes and Big Integers | 10 | |
| ch1sk3ly | Monoprime | 30 | |
| space_invader | Secure Protocols | 5 | |
| ch1sk3ly | Inferius Prime | 30 | |
| Rupcrypter | Extended GCD | 20 | |
| luminous1 | Bytes and Big Integers | 10 | |
| ch1sk3ly | Factoring | 15 | |
| hoomishalom | Signing Server | 60 | |
| ch1sk3ly | RSA Signatures | 25 | |
| Tbs12455 | Keyed Permutations | 5 | |
| bellafancy | Finding Flags | 2 | |
| Woodsman | Diffusion through Permutation | 30 | |
| ch1sk3ly | RSA Decryption | 20 | |
| ch1sk3ly | Private Keys | 20 | |
| ch1sk3ly | Euler's Totient | 20 | |
| ch1sk3ly | Public Keys | 15 | |
| ch1sk3ly | Modular Exponentiation | 10 | |
| danieldegracia81 | Modular Binomials | 80 | |
| danieldegracia81 | Adrien's Signs | 80 | |
| danieldegracia81 | Chinese Remainder Theorem | 40 | |
| danieldegracia81 | Modular Square Root | 35 | |
| danieldegracia81 | Legendre Symbol | 35 | |
| danieldegracia81 | Quadratic Residues | 25 | |
| EllisAlder | Base64 | 10 | |
| danieldegracia81 | Modular Inverting | 25 | |
| Rupcrypter | Greatest Common Divisor | 15 | |
| danieldegracia81 | Modular Arithmetic 2 | 20 | |
| EllisAlder | Hex | 5 | |
| danieldegracia81 | Modular Arithmetic 1 | 20 |
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