| Date | User | Challenge | Score |
| yasminka | Sharks on the Wire | 10 | |
| peterhack | Confusion through Substitution | 25 | |
| peterhack | Round Keys | 20 | |
| peterhack | Structure of AES | 15 | |
| peterhack | Resisting Bruteforce | 10 | |
| peterhack | Keyed Permutations | 5 | |
| DavidTruong | Additive | 70 | |
| postQuantum | Endless Emails | 150 | |
| KingCrimson2077 | XOR Properties | 15 | |
| cse13225klai21 | ECB CBC WTF | 55 | |
| devsec1 | Base64 | 10 | |
| devsec1 | Hex | 5 | |
| peterhack | Transparency | 50 | |
| devsec1 | ASCII | 5 | |
| yr81 | Megalomaniac 2 | 120 | |
| DavidTruong | Static Client | 100 | |
| tristanpetrovich | XOR Starter | 10 | |
| tristanpetrovich | Bytes and Big Integers | 10 | |
| tristanpetrovich | Base64 | 10 | |
| tristanpetrovich | Hex | 5 | |
| pin3apple07 | Montgomery's Ladder | 40 | |
| tristanpetrovich | ASCII | 5 | |
| tristanpetrovich | Great Snakes | 3 | |
| tristanpetrovich | Finding Flags | 2 | |
| devsec1 | Great Snakes | 3 | |
| devsec1 | Finding Flags | 2 | |
| qwra | Generators of Groups | 20 | |
| IMU | Keyed Permutations | 5 | |
| qwra | Working with Fields | 10 | |
| giovani28 | ASCII | 5 | |
| Alan233 | Efficient Exchange | 50 | |
| Z3U55 | LWE Background | 5 | |
| Alan233 | Curves and Logs | 40 | |
| Canarr | Structure of AES | 15 | |
| Alan233 | Scalar Multiplication | 35 | |
| Z3U55 | Backpack Cryptography | 120 | |
| JayHeleno | Base64 | 10 | |
| Alan233 | Point Addition | 30 | |
| JayHeleno | Hex | 5 | |
| Alan233 | Point Negation | 10 | |
| Alan233 | Background Reading | 5 | |
| JayHeleno | ASCII | 5 | |
| Z3U55 | Find the Lattice | 100 | |
| JayHeleno | Great Snakes | 3 | |
| JayHeleno | Finding Flags | 2 | |
| giovani28 | Great Snakes | 3 | |
| KOBA | Modular Inverting | 25 | |
| Jimmyn | Adrien's Signs | 80 | |
| Toadytop | An Exceptional Twisted Mind | 125 | |
| KOBA | Modular Arithmetic 2 | 20 |
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