| Date | User | Challenge | Score |
| noam123 | Square Eyes | 35 | |
| hasuke | Scalar Multiplication | 35 | |
| noam123 | Monoprime | 30 | |
| spinflipper31415 | Adrien's Signs | 80 | |
| skylers | Hex | 5 | |
| noam123 | Bytes and Big Integers | 10 | |
| noam123 | Base64 | 10 | |
| skylers | ASCII | 5 | |
| A2RU | Jeff's LFSR | 150 | |
| skylers | Great Snakes | 3 | |
| noam123 | Hex | 5 | |
| skylers | Finding Flags | 2 | |
| noam123 | ASCII | 5 | |
| hasuke | Point Addition | 30 | |
| Cantoloupe | Round Keys | 20 | |
| noam123 | Great Snakes | 3 | |
| noam123 | Finding Flags | 2 | |
| kayshamoon | Public Keys | 15 | |
| osihlovec | Bit by Bit | 100 | |
| cplex | XOR Properties | 15 | |
| kayshamoon | Modular Exponentiation | 10 | |
| Parvez_88 | You either know, XOR you don't | 30 | |
| nadavk100 | SSH Keys | 35 | |
| Parvez_88 | Favourite byte | 20 | |
| Parvez_88 | XOR Properties | 15 | |
| Parvez_88 | XOR Starter | 10 | |
| Parvez_88 | Bytes and Big Integers | 10 | |
| Parvez_88 | Base64 | 10 | |
| Parvez_88 | Hex | 5 | |
| nbrthx | Favourite byte | 20 | |
| Parvez_88 | ASCII | 5 | |
| Parvez_88 | Great Snakes | 3 | |
| Parvez_88 | Finding Flags | 2 | |
| lamng | Missing Modulus | 80 | |
| Carmul7 | Lemur XOR | 40 | |
| KusaYu | Modular Binomials | 80 | |
| Rotce | Export-grade | 100 | |
| A2RU | LFSR Destroyer | 250 | |
| ktsoupos | Passwords as Keys | 50 | |
| Cantoloupe | Structure of AES | 15 | |
| nbrthx | XOR Properties | 15 | |
| eithan_hotam | Square Eyes | 35 | |
| Rotce | Parameter Injection | 60 | |
| nbrthx | XOR Starter | 10 | |
| nadavk100 | CERTainly not | 30 | |
| jaeu1341 | Passwords as Keys | 50 | |
| nbrthx | Bytes and Big Integers | 10 | |
| Rotce | Deriving Symmetric Keys | 40 | |
| p1k4chu | Greatest Common Divisor | 15 | |
| cplex | XOR Starter | 10 |
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