| Date | User | Challenge | Score |
| shynnevilla | Noise Free | 40 | |
| k1rby | Extended GCD | 20 | |
| ZhangWenxuan | Structure of AES | 15 | |
| ZhangWenxuan | Resisting Bruteforce | 10 | |
| rusadiarif | Resisting Bruteforce | 10 | |
| ZhangWenxuan | Keyed Permutations | 5 | |
| gyul_ | Modular Arithmetic 2 | 20 | |
| Phr34k | ASCII | 5 | |
| deutschebank | Bytes and Big Integers | 10 | |
| luwofi | Oh SNAP | 120 | |
| rusadiarif | Keyed Permutations | 5 | |
| binhadauma | Finding Flags | 2 | |
| deutschebank | Base64 | 10 | |
| Phr34k | Great Snakes | 3 | |
| shynnevilla | From Private to Public Key LWE | 25 | |
| shynnevilla | LWE Low Bits Message | 20 | |
| zhanghanwen | Generators of Groups | 20 | |
| gyul_ | Modular Arithmetic 1 | 20 | |
| zhanghanwen | Working with Fields | 10 | |
| zhanghanwen | Private Keys | 20 | |
| Phr34k | Finding Flags | 2 | |
| zhanghanwen | RSA Decryption | 20 | |
| deutschebank | Hex | 5 | |
| shynnevilla | LWE High Bits Message | 15 | |
| deutschebank | ASCII | 5 | |
| zhanghanwen | Euler's Totient | 20 | |
| zhanghanwen | Public Keys | 15 | |
| zhanghanwen | Modular Exponentiation | 10 | |
| zhanghanwen | Successive Powers | 60 | |
| zhanghanwen | Chinese Remainder Theorem | 40 | |
| zhanghanwen | Quadratic Residues | 25 | |
| labcoxyzl | Lemur XOR | 40 | |
| deutschebank | Great Snakes | 3 | |
| zhanghanwen | Round Keys | 20 | |
| zhanghanwen | Resisting Bruteforce | 10 | |
| zhanghanwen | Keyed Permutations | 5 | |
| labcoxyzl | You either know, XOR you don't | 30 | |
| zhanghanwen | Modular Arithmetic 2 | 20 | |
| zhanghanwen | Modular Arithmetic 1 | 20 | |
| labcoxyzl | Favourite byte | 20 | |
| labcoxyzl | XOR Properties | 15 | |
| zhanghanwen | Network Attacks | 5 | |
| labcoxyzl | XOR Starter | 10 | |
| labcoxyzl | Encoding Challenge | 40 | |
| labcoxyzl | Base64 | 10 | |
| labcoxyzl | Bytes and Big Integers | 10 | |
| labcoxyzl | Hex | 5 | |
| labcoxyzl | ASCII | 5 | |
| labcoxyzl | Network Attacks | 5 | |
| labcoxyzl | Great Snakes | 3 |
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