| Date | User | Challenge | Score |
| Heheweliusz | Finding Flags | 2 | |
| relight5910 | Base64 | 10 | |
| DUBI | Deriving Symmetric Keys | 40 | |
| evantampa129 | Finding Flags | 2 | |
| Ralotic | Great Snakes | 3 | |
| DUBI | Computing Shared Secrets | 30 | |
| Ralotic | Finding Flags | 2 | |
| DUBI | Computing Public Values | 25 | |
| galchapman | Merkle Trees | 25 | |
| galchapman | Jack's Birthday Hash | 20 | |
| mahreenilyas | Finding Flags | 2 | |
| galchapman | Jack's Birthday Confusion | 30 | |
| DimitrisTzoumpas | Confusion through Substitution | 25 | |
| dXNlcm5hbWU_ | Secure Protocols | 5 | |
| Theodo | Efficient Exchange | 50 | |
| dionisiant | Round Keys | 20 | |
| UdangCheese | Structure of AES | 15 | |
| DUBI | Generators of Groups | 20 | |
| UdangCheese | Resisting Bruteforce | 10 | |
| UdangCheese | Keyed Permutations | 5 | |
| DUBI | Working with Fields | 10 | |
| work | Computing Shared Secrets | 30 | |
| Ayiiw | You either know, XOR you don't | 30 | |
| bimahack | Favourite byte | 20 | |
| Red0psD3v4rsh007 | Keyed Permutations | 5 | |
| Mitsouvis | RSA Signatures | 25 | |
| dXNlcm5hbWU_ | JSON in JSON | 40 | |
| work | Deriving Symmetric Keys | 40 | |
| Ayiiw | Favourite byte | 20 | |
| minoway | Great Snakes | 3 | |
| Ayiiw | XOR Properties | 15 | |
| Tyzals | Favourite byte | 20 | |
| UdangCheese | Favourite byte | 20 | |
| minoway | Finding Flags | 2 | |
| galchapman | Symmetry | 50 | |
| galchapman | ECB CBC WTF | 55 | |
| galchapman | Passwords as Keys | 50 | |
| galchapman | Modes of Operation Starter | 15 | |
| galchapman | Bringing It All Together | 50 | |
| galchapman | Diffusion through Permutation | 30 | |
| Tyzals | XOR Properties | 15 | |
| galchapman | Confusion through Substitution | 25 | |
| UdangCheese | XOR Properties | 15 | |
| galchapman | Round Keys | 20 | |
| galchapman | Structure of AES | 15 | |
| galchapman | Resisting Bruteforce | 10 | |
| galchapman | Keyed Permutations | 5 | |
| bimahack | XOR Properties | 15 | |
| xaos333 | You either know, XOR you don't | 30 | |
| work | Computing Public Values | 25 |
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