| Date | User | Challenge | Score |
| VWARUI | Manyprime | 40 | |
| Alexnder | Modular Inverting | 25 | |
| KK5559D | Computing Public Values | 25 | |
| me0w | Hex | 5 | |
| 0x303 | Finding Flags | 2 | |
| Alexnder | Modular Arithmetic 2 | 20 | |
| me0w | ASCII | 5 | |
| rumplings | Extended GCD | 20 | |
| Alexnder | Modular Arithmetic 1 | 20 | |
| Alexnder | Extended GCD | 20 | |
| chefov | Confusion through Substitution | 25 | |
| perncrypt | Finding Flags | 2 | |
| Psofos | Greatest Common Divisor | 15 | |
| Fridintana | Inferius Prime | 30 | |
| nagiaaa | Euler's Totient | 20 | |
| Alexnder | Greatest Common Divisor | 15 | |
| hatawa | Curveball | 100 | |
| chefov | Round Keys | 20 | |
| hatawa | Export-grade | 100 | |
| hatawa | Smooth Criminal | 60 | |
| hatawa | Parameter Injection | 60 | |
| hatawa | Deriving Symmetric Keys | 40 | |
| hatawa | Montgomery's Ladder | 40 | |
| hatawa | Computing Shared Secrets | 30 | |
| hatawa | Efficient Exchange | 50 | |
| hatawa | Computing Public Values | 25 | |
| hatawa | Generators of Groups | 20 | |
| hatawa | Curves and Logs | 40 | |
| hatawa | Working with Fields | 10 | |
| hatawa | Modulus Inutilis | 50 | |
| hatawa | Salty | 20 | |
| hatawa | Scalar Multiplication | 35 | |
| hatawa | Manyprime | 40 | |
| hatawa | Point Addition | 30 | |
| hatawa | Monoprime | 30 | |
| hatawa | Factoring | 15 | |
| hatawa | Point Negation | 10 | |
| hatawa | RSA Signatures | 25 | |
| hatawa | Background Reading | 5 | |
| hatawa | RSA Decryption | 20 | |
| hatawa | Private Keys | 20 | |
| hatawa | Euler's Totient | 20 | |
| hatawa | Public Keys | 15 | |
| hatawa | Modular Exponentiation | 10 | |
| mukami | Passwords as Keys | 50 | |
| hatawa | Bean Counter | 60 | |
| hatawa | Symmetry | 50 | |
| hatawa | Flipping Cookie | 60 | |
| hatawa | ECB CBC WTF | 55 | |
| chefov | Structure of AES | 15 |
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