| Date | User | Challenge | Score |
| ITQ | Structure of AES | 15 | |
| kxld | Modes of Operation Starter | 15 | |
| SofiiaKhSofii | Hex | 5 | |
| rezrez | RSA Decryption | 20 | |
| Aul16 | Resisting Bruteforce | 10 | |
| saus | Nothing Up My Sleeve | 150 | |
| Montessinos | Encoding Challenge | 40 | |
| Aul16 | Keyed Permutations | 5 | |
| ITQ | Resisting Bruteforce | 10 | |
| rezrez | Private Keys | 20 | |
| Aul16 | Modular Binomials | 80 | |
| rezrez | Euler's Totient | 20 | |
| Fakih489 | Monoprime | 30 | |
| ITQ | Keyed Permutations | 5 | |
| uwfojsj22 | Bytes and Big Integers | 10 | |
| Kebzor | Favourite byte | 20 | |
| rezrez | Public Keys | 15 | |
| FlawlessXr | XOR Properties | 15 | |
| Wandanurhasanah | RSA Decryption | 20 | |
| Wandanurhasanah | Private Keys | 20 | |
| Wandanurhasanah | Euler's Totient | 20 | |
| daisylomo | XOR Starter | 10 | |
| cafecafe | Collider | 50 | |
| rezrez | Modular Exponentiation | 10 | |
| rustw | Hex | 5 | |
| FlawlessXr | XOR Starter | 10 | |
| agrocos | ECB CBC WTF | 55 | |
| PinkPanda153121 | Finding Flags | 2 | |
| Dimitris_Toulis | Find the Lattice | 100 | |
| Keyso | XOR Starter | 10 | |
| discolol | ASCII | 5 | |
| gildas | You either know, XOR you don't | 30 | |
| Fakih489 | Factoring | 15 | |
| Fakih489 | RSA Signatures | 25 | |
| cafecafe | Jack's Birthday Confusion | 30 | |
| Fakih489 | RSA Decryption | 20 | |
| Fakih489 | Private Keys | 20 | |
| Fakih489 | Euler's Totient | 20 | |
| Fakih489 | Public Keys | 15 | |
| Fakih489 | Modular Exponentiation | 10 | |
| gildas | Favourite byte | 20 | |
| discolol | Great Snakes | 3 | |
| uwfojsj22 | Base64 | 10 | |
| Montessinos | Network Attacks | 5 | |
| uwfojsj22 | Hex | 5 | |
| gildas | XOR Properties | 15 | |
| FlawlessXr | Bytes and Big Integers | 10 | |
| Keyso | Bytes and Big Integers | 10 | |
| uwfojsj22 | ASCII | 5 | |
| cafecafe | Jack's Birthday Hash | 20 |
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