| Date | User | Challenge | Score |
| xtfxshgwni | Chinese Remainder Theorem | 40 | |
| xtfxshgwni | Modular Square Root | 35 | |
| ayush00201 | XOR Properties | 15 | |
| Simao_Graphics | Finding Flags | 2 | |
| panici4937 | Modular Arithmetic 1 | 20 | |
| xtfxshgwni | Legendre Symbol | 35 | |
| moi_c_sam | Euler's Totient | 20 | |
| xtfxshgwni | Quadratic Residues | 25 | |
| xtfxshgwni | Modular Inverting | 25 | |
| xtfxshgwni | Modular Arithmetic 2 | 20 | |
| xtfxshgwni | Modular Arithmetic 1 | 20 | |
| xtfxshgwni | Extended GCD | 20 | |
| pluh | Finding Flags | 2 | |
| moi_c_sam | Public Keys | 15 | |
| xtfxshgwni | Greatest Common Divisor | 15 | |
| snake_sss | Legendre Symbol | 35 | |
| moi_c_sam | Modular Exponentiation | 10 | |
| xtfxshgwni | You either know, XOR you don't | 30 | |
| logena | Hex | 5 | |
| Asterix22 | Network Attacks | 5 | |
| xtfxshgwni | Favourite byte | 20 | |
| logena | ASCII | 5 | |
| feynhat | Extended GCD | 20 | |
| logena | Great Snakes | 3 | |
| Showkara | Megalomaniac 1 | 100 | |
| logena | Finding Flags | 2 | |
| xtfxshgwni | XOR Properties | 15 | |
| Shadow4011 | ASCII | 5 | |
| xtfxshgwni | XOR Starter | 10 | |
| sp1n0z4 | Diffusion through Permutation | 30 | |
| xtfxshgwni | Bytes and Big Integers | 10 | |
| Ah_Crypto2 | Confusion through Substitution | 25 | |
| xtfxshgwni | Base64 | 10 | |
| xtfxshgwni | Hex | 5 | |
| xtfxshgwni | ASCII | 5 | |
| snake_sss | Quadratic Residues | 25 | |
| xtfxshgwni | Great Snakes | 3 | |
| Gengg_ | ECB CBC WTF | 55 | |
| feynhat | Greatest Common Divisor | 15 | |
| xtfxshgwni | Finding Flags | 2 | |
| ThePirate42 | Montgomery's Ladder | 40 | |
| dexter_nate27 | Triple DES | 60 | |
| seven11eleven | Monoprime | 30 | |
| seven11eleven | Inferius Prime | 30 | |
| matthew13 | XOR Properties | 15 | |
| sp1n0z4 | Confusion through Substitution | 25 | |
| ilyassemfkhunter | ASCII | 5 | |
| annalisa | Size and Basis | 15 | |
| seven11eleven | Factoring | 15 | |
| matthew13 | XOR Starter | 10 |
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