| Date | User | Challenge | Score |
| ogne | Confusion through Substitution | 25 | |
| desmond_lukwago | Euler's Totient | 20 | |
| lechatcevin | Modular Square Root | 35 | |
| CTDodger | Base64 | 10 | |
| Retro_165885 | Export-grade | 100 | |
| desmond_lukwago | Public Keys | 15 | |
| Retro_165885 | Parameter Injection | 60 | |
| Retro_165885 | Deriving Symmetric Keys | 40 | |
| Retro_165885 | Computing Shared Secrets | 30 | |
| desmond_lukwago | Modular Exponentiation | 10 | |
| Retro_165885 | Computing Public Values | 25 | |
| aminkedri | XOR Properties | 15 | |
| Retro_165885 | Generators of Groups | 20 | |
| CTDodger | Hex | 5 | |
| mariam_hassan01 | Manyprime | 40 | |
| Retro_165885 | Working with Fields | 10 | |
| Dileudonne1 | Adrien's Signs | 80 | |
| Retro_165885 | Modulus Inutilis | 50 | |
| gittyasois | Adrien's Signs | 80 | |
| lechatcevin | Legendre Symbol | 35 | |
| NicoleTetu | RSA Signatures | 25 | |
| Retro_165885 | Salty | 20 | |
| constant | Hex | 5 | |
| Dileudonne1 | Chinese Remainder Theorem | 40 | |
| Dileudonne1 | Modular Square Root | 35 | |
| ashref__kf | Great Snakes | 3 | |
| Retro_165885 | Manyprime | 40 | |
| Dileudonne1 | Legendre Symbol | 35 | |
| Abiksha_123 | ASCII | 5 | |
| Abiksha_123 | Great Snakes | 3 | |
| Riksaboy91 | XOR Properties | 15 | |
| Abiksha_123 | Finding Flags | 2 | |
| Dileudonne1 | Quadratic Residues | 25 | |
| Dileudonne1 | Modular Inverting | 25 | |
| Dileudonne1 | Modular Arithmetic 2 | 20 | |
| ogne | Round Keys | 20 | |
| Dileudonne1 | Modular Arithmetic 1 | 20 | |
| aminkedri | XOR Starter | 10 | |
| Dileudonne1 | Extended GCD | 20 | |
| NicoleTetu | RSA Decryption | 20 | |
| mariam_hassan01 | Monoprime | 30 | |
| d3v_k1r4 | Modular Inverting | 25 | |
| ashref__kf | Finding Flags | 2 | |
| Retro_165885 | Monoprime | 30 | |
| NicoleTetu | Private Keys | 20 | |
| NicoleTetu | Euler's Totient | 20 | |
| d3v_k1r4 | Modular Arithmetic 2 | 20 | |
| mariam_hassan01 | Factoring | 15 | |
| Retro_165885 | Factoring | 15 | |
| NicoleTetu | Public Keys | 15 |
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