| Date | User | Challenge | Score |
| Jottape44 | Base64 | 10 | |
| Joks8923 | Hex | 5 | |
| 25521051 | Modes of Operation Starter | 15 | |
| MHW | Greatest Common Divisor | 15 | |
| 26521111001 | Triple DES | 60 | |
| Jottape44 | Hex | 5 | |
| leo4 | Finding Flags | 2 | |
| Jottape44 | ASCII | 5 | |
| 26521111001 | Lazy CBC | 60 | |
| Jottape44 | Great Snakes | 3 | |
| Jottape44 | Finding Flags | 2 | |
| MHW | You either know, XOR you don't | 30 | |
| 26521111001 | Transparency | 50 | |
| MHW | Favourite byte | 20 | |
| Joks8923 | ASCII | 5 | |
| Technomanicat | RSA Decryption | 20 | |
| MHW | XOR Properties | 15 | |
| Technomanicat | Private Keys | 20 | |
| spotter | Quadratic Residues | 25 | |
| Technomanicat | Euler's Totient | 20 | |
| spotter | Modular Inverting | 25 | |
| Technomanicat | Public Keys | 15 | |
| spotter | Modular Arithmetic 2 | 20 | |
| MHW | XOR Starter | 10 | |
| spotter | Modular Arithmetic 1 | 20 | |
| spotter | Extended GCD | 20 | |
| spotter | Greatest Common Divisor | 15 | |
| Melonnn | Hex | 5 | |
| Tr0nx | Base64 | 10 | |
| 25521051 | Bringing It All Together | 50 | |
| Joks8923 | Great Snakes | 3 | |
| Joks8923 | Finding Flags | 2 | |
| Melonnn | ASCII | 5 | |
| Beethoven3 | Oracular Spectacular | 150 | |
| Melonnn | Great Snakes | 3 | |
| cckox | Bytes and Big Integers | 10 | |
| cckox | Base64 | 10 | |
| skylight | RSA Decryption | 20 | |
| KowalskiVan | SIDH Key Exchange | 80 | |
| cckox | Hex | 5 | |
| KowalskiVan | RSA or HMAC? Part 2 | 100 | |
| cckox | ASCII | 5 | |
| cckox | Great Snakes | 3 | |
| KowalskiVan | Real Curve Crypto | 200 | |
| ytbjplh | Rhetorical Oracle | 100 | |
| KowalskiVan | Elliptic Nodes | 150 | |
| skylight | Private Keys | 20 | |
| cckox | Finding Flags | 2 | |
| Tr0nx | Hex | 5 | |
| KowalskiVan | Abelian SIDH | 90 |
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