| Date | User | Challenge | Score |
| el3 | Generators of Groups | 20 | |
| el3 | Working with Fields | 10 | |
| tredfggdf | Moving Problems | 150 | |
| Griffin_191613 | Structure of AES | 15 | |
| tredfggdf | ProSign 3 | 100 | |
| el3 | Modulus Inutilis | 50 | |
| Damelya | Legendre Symbol | 35 | |
| el3 | Salty | 20 | |
| tredfggdf | Curveball | 100 | |
| artcoding | Extended GCD | 20 | |
| el3 | Manyprime | 40 | |
| HuangStar | Hex | 5 | |
| PinguinGurun | Great Snakes | 3 | |
| Damelya | Quadratic Residues | 25 | |
| Damelya | Modular Inverting | 25 | |
| tredfggdf | Smooth Criminal | 60 | |
| Damelya | Modular Arithmetic 2 | 20 | |
| TalionVS | Bytes and Big Integers | 10 | |
| tredfggdf | Montgomery's Ladder | 40 | |
| PinguinGurun | Finding Flags | 2 | |
| HuangStar | ASCII | 5 | |
| tredfggdf | Efficient Exchange | 50 | |
| tredfggdf | Curves and Logs | 40 | |
| tredfggdf | Scalar Multiplication | 35 | |
| tredfggdf | Point Addition | 30 | |
| tredfggdf | Point Negation | 10 | |
| tredfggdf | Background Reading | 5 | |
| tredfggdf | Manyprime | 40 | |
| llknb | Hex | 5 | |
| zeski | Bad Temper | 130 | |
| mnaufal411 | Greatest Common Divisor | 15 | |
| Abstract | Gaussian Reduction | 50 | |
| tredfggdf | Export-grade | 100 | |
| shaffy | Favourite byte | 20 | |
| flover | Greatest Common Divisor | 15 | |
| tredfggdf | Parameter Injection | 60 | |
| tredfggdf | Deriving Symmetric Keys | 40 | |
| yingxiaowo | Adrien's Signs | 80 | |
| cryptotti | Structure of AES | 15 | |
| tredfggdf | Computing Shared Secrets | 30 | |
| Krumpel | Chinese Remainder Theorem | 40 | |
| tredfggdf | Computing Public Values | 25 | |
| tredfggdf | Generators of Groups | 20 | |
| wassimos1 | Hex | 5 | |
| tredfggdf | Working with Fields | 10 | |
| tredfggdf | Salty | 20 | |
| el3 | Monoprime | 30 | |
| undercover228 | Finding Flags | 2 | |
| TalionVS | Base64 | 10 | |
| tredfggdf | Modulus Inutilis | 50 |
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