| Date | User | Challenge | Score |
| IreneK | Public Keys | 15 | |
| tbr103 | Greatest Common Divisor | 15 | |
| conan924 | Double and Broken | 50 | |
| melvin123_4 | RSA Signatures | 25 | |
| IreneK | Modular Exponentiation | 10 | |
| gittyasois | ECB Oracle | 60 | |
| miaomiao666 | Infinite Descent | 50 | |
| FlagHunter | Great Snakes | 3 | |
| Armstrong64 | Parameter Injection | 60 | |
| melvin123_4 | RSA Decryption | 20 | |
| melvin123_4 | Private Keys | 20 | |
| melvin123_4 | Euler's Totient | 20 | |
| souhaieb | Base64 | 10 | |
| JoeBiden | ASCII | 5 | |
| melvin123_4 | Public Keys | 15 | |
| Armstrong64 | Deriving Symmetric Keys | 40 | |
| melvin123_4 | Modular Exponentiation | 10 | |
| IreneK | Triple DES | 60 | |
| IreneK | Lazy CBC | 60 | |
| Armstrong64 | Computing Shared Secrets | 30 | |
| MaddoxKibati | RSA Decryption | 20 | |
| Armstrong64 | Computing Public Values | 25 | |
| dlhxfy | Bytes and Big Integers | 10 | |
| MaddoxKibati | Private Keys | 20 | |
| MaddoxKibati | Euler's Totient | 20 | |
| MaddoxKibati | Public Keys | 15 | |
| Armstrong64 | Generators of Groups | 20 | |
| MaddoxKibati | Modular Exponentiation | 10 | |
| N0UR | Resisting Bruteforce | 10 | |
| Charvey | Modular Inverting | 25 | |
| Udargabi | Base64 | 10 | |
| N0UR | Keyed Permutations | 5 | |
| Austine | Bean Counter | 60 | |
| Armstrong64 | Working with Fields | 10 | |
| miaomiao666 | Endless Emails | 150 | |
| conan924 | Scalar Multiplication | 35 | |
| Armstrong64 | Modulus Inutilis | 50 | |
| welder | Resisting Bruteforce | 10 | |
| roovveeess | Extended GCD | 20 | |
| conan924 | Point Addition | 30 | |
| Armstrong64 | Salty | 20 | |
| IreneK | Flipping Cookie | 60 | |
| Austine | ECB Oracle | 60 | |
| IreneK | ECB CBC WTF | 55 | |
| Emil10092010 | XOR Properties | 15 | |
| Armstrong64 | Manyprime | 40 | |
| welder | Keyed Permutations | 5 | |
| dlhxfy | Base64 | 10 | |
| kira15 | XOR Starter | 10 | |
| velya | XOR Starter | 10 |
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