| Date | User | Challenge | Score |
| lovingmachine3 | XOR Properties | 15 | |
| NJJ | Public Keys | 15 | |
| aress | Adrien's Signs | 80 | |
| handoko | Public Keys | 15 | |
| boestraw | Public Keys | 15 | |
| mee217 | XOR Properties | 15 | |
| kotoko | SSH Keys | 35 | |
| 5h4hrokh | Resisting Bruteforce | 10 | |
| Nxcromxncer | Finding Flags | 2 | |
| supersecretname | Base64 | 10 | |
| 5h4hrokh | Keyed Permutations | 5 | |
| handoko | Modular Exponentiation | 10 | |
| boestraw | Modular Exponentiation | 10 | |
| Jaxc | Modular Exponentiation | 10 | |
| NJJ | Modular Exponentiation | 10 | |
| Nanang | Modular Exponentiation | 10 | |
| 5h4hrokh | Modular Binomials | 80 | |
| labcoxyzl | Bruce Schneier's Password: Part 2 | 250 | |
| b1b00www | No Way Back Home | 100 | |
| tech888 | Greatest Common Divisor | 15 | |
| Pravy | Decrypting TLS 1.2 | 30 | |
| 2x2y2 | An Exceptional Twisted Mind | 125 | |
| supersecretname | Hex | 5 | |
| kotoko | CERTainly not | 30 | |
| Pravy | Saying Hello | 20 | |
| diana2002 | Base64 | 10 | |
| diana2002 | Hex | 5 | |
| ibpu | Stream of Consciousness | 80 | |
| crypto_saka_hack | The Matrix | 75 | |
| 5h4hrokh | Adrien's Signs | 80 | |
| diana2002 | ASCII | 5 | |
| Pravy | TLS Handshake | 15 | |
| kotoko | Privacy-Enhanced Mail? | 25 | |
| diana2002 | Great Snakes | 3 | |
| Pravy | Secure Protocols | 5 | |
| 169819 | Deriving Symmetric Keys | 40 | |
| supersecretname | ASCII | 5 | |
| diana2002 | Finding Flags | 2 | |
| jeanxnor | XOR Starter | 10 | |
| KK5559D | Deriving Symmetric Keys | 40 | |
| Psofos | No Way Back Home | 100 | |
| 169819 | Computing Shared Secrets | 30 | |
| supersecretname | Great Snakes | 3 | |
| 169819 | Computing Public Values | 25 | |
| Mugisha | Deriving Symmetric Keys | 40 | |
| MystixDark | XOR Properties | 15 | |
| supersecretname | Finding Flags | 2 | |
| b1b00www | Successive Powers | 60 | |
| 169819 | Generators of Groups | 20 | |
| b1b00www | Chinese Remainder Theorem | 40 |
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