| Date | User | Challenge | Score |
| Razan | Lazy CBC | 60 | |
| DevyanJethwa | ASCII | 5 | |
| DevyanJethwa | Great Snakes | 3 | |
| elliotalderson | Hex | 5 | |
| 191917 | Bytes and Big Integers | 10 | |
| ASWINKUMAR | Finding Flags | 2 | |
| kamalnayan50 | Great Snakes | 3 | |
| elliotalderson | ASCII | 5 | |
| YWzhong | Honest Verifier Zero Knowledge | 30 | |
| CHAZ4R | Modular Binomials | 80 | |
| vkenji | Greatest Common Divisor | 15 | |
| cse5student | Bytes and Big Integers | 10 | |
| ntnuw | Oracular Spectacular | 150 | |
| viswesh | Oh SNAP | 120 | |
| wgumulin | Unencryptable | 125 | |
| wgumulin | Roll your Own | 125 | |
| Tribe | Great Snakes | 3 | |
| SUPERSUNN | Bounded Noise | 50 | |
| viswesh | Dancing Queen | 120 | |
| wgumulin | Ellipse Curve Cryptography | 125 | |
| Asxlay | Base64 | 10 | |
| 191917 | Base64 | 10 | |
| cse5student | Base64 | 10 | |
| vkenji | You either know, XOR you don't | 30 | |
| wgumulin | No Way Back Home | 100 | |
| wgumulin | Broken RSA | 100 | |
| sociopath | XOR Properties | 15 | |
| Tribe | Finding Flags | 2 | |
| viswesh | Passwords as Keys | 50 | |
| wgumulin | Modular Binomials | 80 | |
| cse5student | Hex | 5 | |
| Razan | ECB Oracle | 60 | |
| Razan | ECB CBC WTF | 55 | |
| wgumulin | Adrien's Signs | 80 | |
| Razan | Passwords as Keys | 50 | |
| wgumulin | Successive Powers | 60 | |
| khawla1 | Diffusion through Permutation | 30 | |
| wgumulin | Chinese Remainder Theorem | 40 | |
| Razan | Modes of Operation Starter | 15 | |
| wgumulin | Modular Square Root | 35 | |
| Razan | Bringing It All Together | 50 | |
| Kahvi | Bytes and Big Integers | 10 | |
| elliotalderson | Great Snakes | 3 | |
| viswesh | Resisting Bruteforce | 10 | |
| 191917 | Hex | 5 | |
| wgumulin | Legendre Symbol | 35 | |
| Kahvi | Base64 | 10 | |
| wgumulin | Quadratic Residues | 25 | |
| viswesh | Keyed Permutations | 5 | |
| cse5student | ASCII | 5 |
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