| Date | User | Challenge | Score |
| Rohan_Kapri | Encoding Challenge | 40 | |
| ealona | XOR Properties | 15 | |
| zal | Extended GCD | 20 | |
| Rohan_Kapri | Network Attacks | 5 | |
| kamalnayan50 | Quadratic Residues | 25 | |
| Rohan_Kapri | You either know, XOR you don't | 30 | |
| Rohan_Kapri | Favourite byte | 20 | |
| Rohan_Kapri | XOR Properties | 15 | |
| Rohan_Kapri | XOR Starter | 10 | |
| zal | Greatest Common Divisor | 15 | |
| Rohan_Kapri | Bytes and Big Integers | 10 | |
| y0dam4n | Unencryptable | 125 | |
| QuinCyber | XOR Properties | 15 | |
| Rohan_Kapri | Base64 | 10 | |
| Rohan_Kapri | Hex | 5 | |
| Rohan_Kapri | ASCII | 5 | |
| KrakenBacker | Bytes and Big Integers | 10 | |
| Rohan_Kapri | Great Snakes | 3 | |
| AMIRUL_DC99812 | Base64 | 10 | |
| AMIRUL_DC99812 | Hex | 5 | |
| AMIRUL_DC99812 | ASCII | 5 | |
| hungtrab | CTRIME | 70 | |
| QuinCyber | XOR Starter | 10 | |
| zal | Modular Inverting | 25 | |
| rev_cryp | Modular Exponentiation | 10 | |
| zal | Modular Arithmetic 2 | 20 | |
| zal | Modular Arithmetic 1 | 20 | |
| Wofb | Network Attacks | 5 | |
| zal | Factoring | 15 | |
| zal | Inferius Prime | 30 | |
| AMIRUL_DC99812 | Great Snakes | 3 | |
| KrakenBacker | Base64 | 10 | |
| hungtrab | Triple DES | 60 | |
| Lyxchee | Structure of AES | 15 | |
| KrakenBacker | Hex | 5 | |
| AMIRUL_DC99812 | Finding Flags | 2 | |
| zal | Square Eyes | 35 | |
| zal | Monoprime | 30 | |
| KrakenBacker | ASCII | 5 | |
| Dharmraj15 | Modular Binomials | 80 | |
| KrakenBacker | Great Snakes | 3 | |
| Dharmraj15 | Adrien's Signs | 80 | |
| Dharmraj15 | Chinese Remainder Theorem | 40 | |
| Dharmraj15 | Modular Square Root | 35 | |
| KrakenBacker | Finding Flags | 2 | |
| Dharmraj15 | Legendre Symbol | 35 | |
| Dharmraj15 | Quadratic Residues | 25 | |
| Dharmraj15 | Modular Inverting | 25 | |
| Dharmraj15 | Modular Arithmetic 2 | 20 | |
| Dharmraj15 | Modular Arithmetic 1 | 20 |
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