| Date | User | Challenge | Score |
| NahyeKim | Modular Binomials | 80 | |
| ghovhann | Three Isogenies | 35 | |
| shinee | XOR Starter | 10 | |
| NahyeKim | Adrien's Signs | 80 | |
| Cioban_Daniel | Keyed Permutations | 5 | |
| ThePirate42 | Computing Shared Secrets | 30 | |
| znur | Infinite Descent | 50 | |
| ghovhann | Two Isogenies | 30 | |
| NahyeKim | Chinese Remainder Theorem | 40 | |
| MinhBoss | XOR Starter | 10 | |
| zetelen | Chinese Remainder Theorem | 40 | |
| NahyeKim | Modular Square Root | 35 | |
| Cioban_Daniel | You either know, XOR you don't | 30 | |
| Cioban_Daniel | Favourite byte | 20 | |
| Ah_Crypto2 | Triple DES | 60 | |
| Cioban_Daniel | XOR Properties | 15 | |
| Cosmin_Pintilei | Modes of Operation Starter | 15 | |
| IoanRaresPelea | Round Keys | 20 | |
| JoiceXu | Base64 | 10 | |
| CathyZhang | Base64 | 10 | |
| ADDADDA | RSA Decryption | 20 | |
| AEduard | You either know, XOR you don't | 30 | |
| Iulian_Ciobanu | Keyed Permutations | 5 | |
| Diana_Ungureanu | Modes of Operation Starter | 15 | |
| NahyeKim | Legendre Symbol | 35 | |
| IoanRaresPelea | Structure of AES | 15 | |
| ADDADDA | Private Keys | 20 | |
| paulk | You either know, XOR you don't | 30 | |
| rosca_dragos | Structure of AES | 15 | |
| Dulkolax | Extended GCD | 20 | |
| Cioban_Daniel | XOR Starter | 10 | |
| LacatusEduard | Bringing It All Together | 50 | |
| JoiceXu | Hex | 5 | |
| ADDADDA | Euler's Totient | 20 | |
| NahyeKim | Quadratic Residues | 25 | |
| MinhBoss | Bytes and Big Integers | 10 | |
| constantinilie | Diffusion through Permutation | 30 | |
| hippo333 | Bytes and Big Integers | 10 | |
| CathyZhang | Hex | 5 | |
| ADDADDA | Public Keys | 15 | |
| AEduard | Favourite byte | 20 | |
| BeniaminSferciuc | Resisting Bruteforce | 10 | |
| ADDADDA | Modular Exponentiation | 10 | |
| stoica_maria | Diffusion through Permutation | 30 | |
| paulk | Favourite byte | 20 | |
| Diana_Ungureanu | Bringing It All Together | 50 | |
| TheKY | Resisting Bruteforce | 10 | |
| NahyeKim | Modular Inverting | 25 | |
| 0xBart | Public Keys | 15 | |
| paulk | XOR Properties | 15 |
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