| Date | User | Challenge | Score |
| vatsal_nayak | Base64 | 10 | |
| Neutr0nys | Blinding Light | 120 | |
| vatsal_nayak | Hex | 5 | |
| ck0d | Computing Public Values | 25 | |
| vatsal_nayak | ASCII | 5 | |
| JashB1 | You either know, XOR you don't | 30 | |
| JashB1 | Favourite byte | 20 | |
| vatsal_nayak | Great Snakes | 3 | |
| JashB1 | XOR Properties | 15 | |
| JashB1 | XOR Starter | 10 | |
| vatsal_nayak | Finding Flags | 2 | |
| JashB1 | Bytes and Big Integers | 10 | |
| Kronx12 | Privacy-Enhanced Mail? | 25 | |
| votranngocvy | Computing Public Values | 25 | |
| rafaelperezio | Extended GCD | 20 | |
| Gryfman | Modular Inverting | 25 | |
| Galois | Find the Lattice | 100 | |
| Gryfman | Modular Arithmetic 2 | 20 | |
| AceNk | Passwords as Keys | 50 | |
| ikael | Manyprime | 40 | |
| CryptoFun | Quadratic Residues | 25 | |
| AceNk | Modes of Operation Starter | 15 | |
| CryptoFun | Modular Inverting | 25 | |
| votranngocvy | Generators of Groups | 20 | |
| CryptoFun | Modular Arithmetic 2 | 20 | |
| Galois | Gaussian Reduction | 50 | |
| CryptoFun | Modular Arithmetic 1 | 20 | |
| CryptoFun | Extended GCD | 20 | |
| Galois | What's a Lattice? | 40 | |
| Galois | Gram Schmidt | 30 | |
| CryptoFun | Greatest Common Divisor | 15 | |
| Galois | Size and Basis | 15 | |
| Galois | Vectors | 10 | |
| CryptoFun | You either know, XOR you don't | 30 | |
| DoitouKatsuki | Bytes and Big Integers | 10 | |
| jablonskim | Stream of Consciousness | 80 | |
| CryptoFun | Favourite byte | 20 | |
| Galois | Let's Decrypt Again | 175 | |
| Gryfman | Modular Arithmetic 1 | 20 | |
| aj_09 | Finding Flags | 2 | |
| votranngocvy | Working with Fields | 10 | |
| CryptoFun | XOR Properties | 15 | |
| DoitouKatsuki | Base64 | 10 | |
| Lelle | Jeff's LFSR | 150 | |
| Neutr0nys | Let's Decrypt | 80 | |
| CryptoFun | XOR Starter | 10 | |
| Meepcom | Favourite byte | 20 | |
| CryptoFun | Bytes and Big Integers | 10 | |
| ikael | Monoprime | 30 | |
| DoitouKatsuki | Hex | 5 |
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