| Date | User | Challenge | Score |
| qnqlwenflq | Confusion through Substitution | 25 | |
| MahmoodTavafoghi | Resisting Bruteforce | 10 | |
| Ariee | Great Snakes | 3 | |
| lapa | Greatest Common Divisor | 15 | |
| MahmoodTavafoghi | Keyed Permutations | 5 | |
| qnqlwenflq | Round Keys | 20 | |
| Ariee | Finding Flags | 2 | |
| zeed17 | XOR Properties | 15 | |
| persianmfr | Great Snakes | 3 | |
| qnqlwenflq | Structure of AES | 15 | |
| persianmfr | Finding Flags | 2 | |
| CodeFate | Scalar Multiplication | 35 | |
| hanahiennguyen | Bespoke Padding | 100 | |
| zeed17 | XOR Starter | 10 | |
| crypto_saka_hack | No Leaks | 100 | |
| sakshamy123 | Base64 | 10 | |
| qnqlwenflq | Resisting Bruteforce | 10 | |
| qnqlwenflq | Keyed Permutations | 5 | |
| matiosos | Favourite byte | 20 | |
| zeed17 | Bytes and Big Integers | 10 | |
| qnqlwenflq | Great Snakes | 3 | |
| qnqlwenflq | Finding Flags | 2 | |
| bashrc | Too Honest | 50 | |
| matiosos | XOR Properties | 15 | |
| sakshamy123 | Hex | 5 | |
| EcheExpert | Lemur XOR | 40 | |
| bashrc | Non-Interactive | 35 | |
| Ohrorong | Point Addition | 30 | |
| matiosos | XOR Starter | 10 | |
| bashrc | Honest Verifier Zero Knowledge | 30 | |
| Anubis1 | You either know, XOR you don't | 30 | |
| Liel | ASCII | 5 | |
| matiosos | Bytes and Big Integers | 10 | |
| bashrc | Special Soundness | 25 | |
| nprat | Generators of Groups | 20 | |
| ltwind_v2 | A Twisted Mind | 80 | |
| n40y | Diffusion through Permutation | 30 | |
| bashrc | Proofs of Knowledge | 20 | |
| katanabeneficial | Flipping Cookie | 60 | |
| sakshamy123 | ASCII | 5 | |
| KISHORE_T | ASCII | 5 | |
| feynhat | Network Attacks | 5 | |
| KISHORE_T | Great Snakes | 3 | |
| bashrc | ZKP Introduction | 5 | |
| EcheExpert | You either know, XOR you don't | 30 | |
| jskeob | Jack's Birthday Confusion | 30 | |
| sakshamy123 | Finding Flags | 2 | |
| jskeob | Jack's Birthday Hash | 20 | |
| bashrc | Pairing-Based Cryptography | 50 | |
| jinseo | Digestive | 60 |
You are now level Current level