| Date | User | Challenge | Score |
| izn1b | Confusion through Substitution | 25 | |
| tron | Euler's Totient | 20 | |
| th4ont | Modular Inverting | 25 | |
| izn1b | Round Keys | 20 | |
| izn1b | Modes of Operation Starter | 15 | |
| idoHerojn | XOR Starter | 10 | |
| izn1b | Structure of AES | 15 | |
| th4ont | Modular Arithmetic 2 | 20 | |
| izn1b | Resisting Bruteforce | 10 | |
| sqrtN | Beatboxer | 150 | |
| izn1b | Keyed Permutations | 5 | |
| donatsell | Great Snakes | 3 | |
| zahra_kvr | XOR Starter | 10 | |
| sqrtN | Forbidden Fruit | 150 | |
| tron | Public Keys | 15 | |
| see0 | ECB CBC WTF | 55 | |
| Nyann917 | Logon Zero | 80 | |
| tron | Modular Exponentiation | 10 | |
| Ehyoo1121 | Working with Fields | 10 | |
| sqrtN | The Good, The Pad, The Ugly | 100 | |
| Tekq14 | Export-grade | 100 | |
| bbalucs | RSA Signatures | 25 | |
| hadesnhk | Salty | 20 | |
| idoHerojn | Bytes and Big Integers | 10 | |
| donatsell | Finding Flags | 2 | |
| hadesnhk | Inferius Prime | 30 | |
| zahra_kvr | Bytes and Big Integers | 10 | |
| shurayz | Real Eisenstein | 150 | |
| bbalucs | RSA Decryption | 20 | |
| bbalucs | Private Keys | 20 | |
| bbalucs | Euler's Totient | 20 | |
| hadesnhk | Private Keys | 20 | |
| bbalucs | Public Keys | 15 | |
| bbalucs | Modular Exponentiation | 10 | |
| Mote | Blinding Light | 120 | |
| imaranga | You either know, XOR you don't | 30 | |
| UrKarmafr | Hex | 5 | |
| cornn_123 | Chinese Remainder Theorem | 40 | |
| sherwynd | Symmetry | 50 | |
| imaranga | Favourite byte | 20 | |
| hadesnhk | ECB Oracle | 60 | |
| hadesnhk | Bringing It All Together | 50 | |
| th4ont | Modular Arithmetic 1 | 20 | |
| idoHerojn | Base64 | 10 | |
| ca1cu1ating | Factoring | 15 | |
| Tekq14 | Parameter Injection | 60 | |
| UrKarmafr | ASCII | 5 | |
| hadesnhk | Structure of AES | 15 | |
| imaranga | XOR Properties | 15 | |
| idoHerojn | Hex | 5 |
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