| Date | User | Challenge | Score |
| yahya_hcini | Base64 | 10 | |
| semisweetdude | Passwords as Keys | 50 | |
| LED_0102 | Euler's Totient | 20 | |
| p6k376 | Parameter Injection | 60 | |
| guy_gart | ASCII | 5 | |
| iCMD | Modular Binomials | 80 | |
| p6k376 | Deriving Symmetric Keys | 40 | |
| bear123 | Adrien's Signs | 80 | |
| p6k376 | Computing Shared Secrets | 30 | |
| p6k376 | Computing Public Values | 25 | |
| jirapatp | Greatest Common Divisor | 15 | |
| MintyChocolate | Modular Inverting | 25 | |
| guy_gart | Great Snakes | 3 | |
| KzX | XOR Properties | 15 | |
| yahya_hcini | Hex | 5 | |
| Raccoon42 | The j-invariant | 20 | |
| guy_gart | Finding Flags | 2 | |
| MintyChocolate | Modular Arithmetic 2 | 20 | |
| pufik404 | Greatest Common Divisor | 15 | |
| iCMD | Chinese Remainder Theorem | 40 | |
| bartolz | Hex | 5 | |
| yahya_hcini | ASCII | 5 | |
| bartolz | ASCII | 5 | |
| MintyChocolate | Modular Arithmetic 1 | 20 | |
| iCMD | Modular Square Root | 35 | |
| miiyen | Signing Server | 60 | |
| phantom_l | Greatest Common Divisor | 15 | |
| yahya_hcini | Great Snakes | 3 | |
| yahya_hcini | Finding Flags | 2 | |
| bartolz | Great Snakes | 3 | |
| LED_0102 | Public Keys | 15 | |
| LED_0102 | Modular Exponentiation | 10 | |
| Keerthi_Laksana | Great Snakes | 3 | |
| bartolz | Finding Flags | 2 | |
| LED_0102 | Structure of AES | 15 | |
| iCMD | Legendre Symbol | 35 | |
| Relearning_again | Modes of Operation Starter | 15 | |
| Keerthi_Laksana | Finding Flags | 2 | |
| thismathis | Lemur XOR | 40 | |
| bear123 | Chinese Remainder Theorem | 40 | |
| cbr4l0k | Broken RSA | 100 | |
| kerul | Favourite byte | 20 | |
| p6k376 | Generators of Groups | 20 | |
| thismathis | Network Attacks | 5 | |
| Jinx | Twin Keys | 100 | |
| thismathis | Moving Problems | 150 | |
| xEcho1337 | Computing Shared Secrets | 30 | |
| qdsdmp | Modular Inverting | 25 | |
| xEcho1337 | Computing Public Values | 25 | |
| landerson_ | JWT Secrets | 25 |
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