| Date | User | Challenge | Score |
| the_biggest_it | Confusion through Substitution | 25 | |
| navneeth_dm | ASCII | 5 | |
| nguyenphong233 | Greatest Common Divisor | 15 | |
| navneeth_dm | Great Snakes | 3 | |
| satishvaishyar | XOR Properties | 15 | |
| yunseo | Hex | 5 | |
| navneeth_dm | Finding Flags | 2 | |
| nguyenphong233 | You either know, XOR you don't | 30 | |
| aya_09 | Finding Flags | 2 | |
| Staroll | Favourite byte | 20 | |
| the_biggest_it | Round Keys | 20 | |
| satishvaishyar | XOR Starter | 10 | |
| yunseo | ASCII | 5 | |
| C4meLo | Base64 | 10 | |
| yunseo | Great Snakes | 3 | |
| the_biggest_it | Structure of AES | 15 | |
| satishvaishyar | Bytes and Big Integers | 10 | |
| YGUY | Smooth Criminal | 60 | |
| satishvaishyar | Base64 | 10 | |
| Hansen | You either know, XOR you don't | 30 | |
| Cohen | XOR Starter | 10 | |
| Hansen | Favourite byte | 20 | |
| the_biggest_it | Resisting Bruteforce | 10 | |
| yunseo | Finding Flags | 2 | |
| Staroll | XOR Properties | 15 | |
| Hansen | XOR Properties | 15 | |
| Hez | Great Snakes | 3 | |
| the_biggest_it | Keyed Permutations | 5 | |
| Hansen | XOR Starter | 10 | |
| Hansen | Bytes and Big Integers | 10 | |
| Tulgaa | Mister Saplins The Prover | 125 | |
| UdangKeju | You either know, XOR you don't | 30 | |
| Hez | Finding Flags | 2 | |
| C4meLo | Hex | 5 | |
| nguyenphong233 | Favourite byte | 20 | |
| Tulgaa | Pairing-Based Cryptography | 50 | |
| Tulgaa | Couples | 100 | |
| Tulgaa | Mister Saplin's Preview | 80 | |
| Tulgaa | Too Honest | 50 | |
| Tulgaa | Non-Interactive | 35 | |
| Tulgaa | Honest Verifier Zero Knowledge | 30 | |
| Tulgaa | Special Soundness | 25 | |
| Tulgaa | Proofs of Knowledge | 20 | |
| C4meLo | ASCII | 5 | |
| C4meLo | Great Snakes | 3 | |
| CyberPhoom | You either know, XOR you don't | 30 | |
| satishvaishyar | Hex | 5 | |
| C4meLo | Finding Flags | 2 | |
| tuasananh | Quadratic Residues | 25 | |
| satishvaishyar | ASCII | 5 |
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