| Date | User | Challenge | Score |
| Arun18102005 | Successive Powers | 60 | |
| Romsnack | Modular Arithmetic 2 | 20 | |
| jomomo | Modular Square Root | 35 | |
| Arun18102005 | Bean Counter | 60 | |
| laye | Base64 | 10 | |
| Arun18102005 | Flipping Cookie | 60 | |
| perry_platypus | Modular Inverting | 25 | |
| Arun18102005 | ECB Oracle | 60 | |
| Arun18102005 | ECB CBC WTF | 55 | |
| Arun18102005 | Passwords as Keys | 50 | |
| MajorFalleN | Authenticated Handshake | 40 | |
| Romsnack | Modular Arithmetic 1 | 20 | |
| jomomo | Legendre Symbol | 35 | |
| mduong | Extended GCD | 20 | |
| Arun18102005 | Bringing It All Together | 50 | |
| Arun18102005 | Diffusion through Permutation | 30 | |
| Arun18102005 | Confusion through Substitution | 25 | |
| Kriz | Jack's Birthday Confusion | 30 | |
| Arun18102005 | Round Keys | 20 | |
| Arun18102005 | Structure of AES | 15 | |
| Thaimeo2006 | Legendre Symbol | 35 | |
| MajorFalleN | Decrypting TLS 1.3 | 35 | |
| jinkun | Extended GCD | 20 | |
| bytePAD | XOR Properties | 15 | |
| perry_platypus | Modular Arithmetic 2 | 20 | |
| Kriz | Jack's Birthday Hash | 20 | |
| Arun18102005 | Transparency | 50 | |
| Pardhiuman | Point Negation | 10 | |
| lingling | Adrien's Signs | 80 | |
| montaoo | JWT Secrets | 25 | |
| MrAleFonta | Curveball | 100 | |
| FfsS | Structure of AES | 15 | |
| jinkun | Greatest Common Divisor | 15 | |
| Voron | Favourite byte | 20 | |
| perry_platypus | Modular Arithmetic 1 | 20 | |
| AegisBreacher | Bytes and Big Integers | 10 | |
| AegisBreacher | Base64 | 10 | |
| MajorFalleN | Decrypting TLS 1.2 | 30 | |
| AegisBreacher | Hex | 5 | |
| AegisBreacher | ASCII | 5 | |
| bytePAD | XOR Starter | 10 | |
| AegisBreacher | Network Attacks | 5 | |
| AegisBreacher | Great Snakes | 3 | |
| SachaWOS | Curves and Logs | 40 | |
| montaoo | No Way JOSE | 20 | |
| AegisBreacher | Finding Flags | 2 | |
| Quark05 | Great Snakes | 3 | |
| Tziprose9 | Quadratic Residues | 25 | |
| Quark05 | Finding Flags | 2 | |
| sl0nique | Collider | 50 |
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