| Date | User | Challenge | Score |
| Gsanmi1 | Base64 | 10 | |
| cavazinf | Noise Free | 40 | |
| poobunyamati | Finding Flags | 2 | |
| Calokwaz | Quadratic Residues | 25 | |
| Bhargavi_13 | Megalomaniac 2 | 120 | |
| Bhargavi_13 | Megalomaniac 1 | 100 | |
| Bhargavi_13 | Megalomaniac 3 | 120 | |
| cer10ty | XOR Properties | 15 | |
| WhimsicalNarwhal | Resisting Bruteforce | 10 | |
| cavazinf | From Private to Public Key LWE | 25 | |
| 24BECSE19_DT | Megalomaniac 3 | 120 | |
| Gsanmi1 | Hex | 5 | |
| ajh | XOR Starter | 10 | |
| tranchsanto | Bad Temper | 130 | |
| awloCrypt | Favourite byte | 20 | |
| yael1 | Modular Arithmetic 1 | 20 | |
| int80 | WOTS Up 2 | 90 | |
| cavazinf | LWE Low Bits Message | 20 | |
| Frank01001 | CTRIME | 70 | |
| cavazinf | LWE High Bits Message | 15 | |
| cavazinf | LWE Intro | 10 | |
| samucip | Greatest Common Divisor | 15 | |
| Calokwaz | Modular Inverting | 25 | |
| cmoking | Modular Square Root | 35 | |
| cavazinf | LWE Background | 5 | |
| galihbw | Bytes and Big Integers | 10 | |
| Absalam | Finding Flags | 2 | |
| cmoking | Modular Binomials | 80 | |
| galihbw | Base64 | 10 | |
| yael1 | Extended GCD | 20 | |
| samucip | You either know, XOR you don't | 30 | |
| silentedge | Greatest Common Divisor | 15 | |
| galihbw | Hex | 5 | |
| galihbw | ASCII | 5 | |
| Belphegorr | XOR Properties | 15 | |
| galihbw | Great Snakes | 3 | |
| galihbw | Finding Flags | 2 | |
| nguila | Finding Flags | 2 | |
| samucip | Favourite byte | 20 | |
| msdos_ | You either know, XOR you don't | 30 | |
| k1iillx | Moving Problems | 150 | |
| dd99 | SSH Keys | 35 | |
| olaf37 | XOR Properties | 15 | |
| Seasonss | Triple DES | 60 | |
| samucip | XOR Properties | 15 | |
| zyq | Paper Plane | 120 | |
| Akhmetova_Adel | ECB CBC WTF | 55 | |
| Calokwaz | Modular Arithmetic 2 | 20 | |
| Akhmetova_Adel | ECB Oracle | 60 | |
| Calokwaz | Modular Arithmetic 1 | 20 |
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