| Date | User | Challenge | Score |
| shebang | Greatest Common Divisor | 15 | |
| Dinde121 | Modular Inverting | 25 | |
| goosebud21 | Legendre Symbol | 35 | |
| Dinde121 | Modular Arithmetic 2 | 20 | |
| konradsz3 | Additive | 70 | |
| Dinde121 | Modular Arithmetic 1 | 20 | |
| caizer | Hex | 5 | |
| akki_ikka | RSA Signatures | 25 | |
| Dinde121 | Extended GCD | 20 | |
| alhasham | ASCII | 5 | |
| ziad_nitro | RSA Signatures | 25 | |
| Dinde121 | Greatest Common Divisor | 15 | |
| alpha_zer000 | Modular Inverting | 25 | |
| Shiva19 | What's a Lattice? | 40 | |
| alpha_zer000 | Modular Arithmetic 2 | 20 | |
| Dinde121 | You either know, XOR you don't | 30 | |
| Shiva19 | Gram Schmidt | 30 | |
| fynooc | Confusion through Substitution | 25 | |
| akki_ikka | RSA Decryption | 20 | |
| akki_ikka | Private Keys | 20 | |
| T1mday | Bytes and Big Integers | 10 | |
| goosebud21 | Quadratic Residues | 25 | |
| ziad_nitro | RSA Decryption | 20 | |
| Shiva19 | Size and Basis | 15 | |
| Aeneas7 | LWE Intro | 10 | |
| alpha_zer000 | Modular Arithmetic 1 | 20 | |
| Shiva19 | Vectors | 10 | |
| akki_ikka | Euler's Totient | 20 | |
| alhasham | Great Snakes | 3 | |
| akki_ikka | Public Keys | 15 | |
| alhasham | Finding Flags | 2 | |
| ziad_nitro | Private Keys | 20 | |
| alpha_zer000 | Extended GCD | 20 | |
| guyu | Computing Shared Secrets | 30 | |
| T1mday | Base64 | 10 | |
| Dinde121 | Favourite byte | 20 | |
| akki_ikka | Modular Exponentiation | 10 | |
| T1mday | Hex | 5 | |
| ciphermalware | Trust Games | 150 | |
| Magnuswj | Let's Decrypt | 80 | |
| amunium | Endless Emails | 150 | |
| T1mday | ASCII | 5 | |
| guyu | Computing Public Values | 25 | |
| T1mday | Great Snakes | 3 | |
| konradsz3 | Static Client | 100 | |
| T1mday | Finding Flags | 2 | |
| Dinde121 | XOR Properties | 15 | |
| fynooc | Round Keys | 20 | |
| alpha_zer000 | Greatest Common Divisor | 15 | |
| ciphermalware | RSA vs RNG | 150 |
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