| Date | User | Challenge | Score |
| abraxii | Lazy CBC | 60 | |
| dkoazwlearning | Bytes and Big Integers | 10 | |
| catalin_munteanu | Diffusion through Permutation | 30 | |
| dkoazwlearning | Base64 | 10 | |
| kien | ECB Oracle | 60 | |
| dkoazwlearning | Hex | 5 | |
| dkoazwlearning | ASCII | 5 | |
| catalin_munteanu | Confusion through Substitution | 25 | |
| intPointer | You either know, XOR you don't | 30 | |
| dexter_nate27 | Network Attacks | 5 | |
| intPointer | Favourite byte | 20 | |
| intPointer | XOR Properties | 15 | |
| intPointer | XOR Starter | 10 | |
| dkoazwlearning | Modular Binomials | 80 | |
| dexter_nate27 | ProSign 3 | 100 | |
| intPointer | Bytes and Big Integers | 10 | |
| intPointer | Base64 | 10 | |
| intPointer | Hex | 5 | |
| hack_use_math | Adrien's Signs | 80 | |
| intPointer | ASCII | 5 | |
| intPointer | Great Snakes | 3 | |
| abraxii | Bean Counter | 60 | |
| intPointer | Finding Flags | 2 | |
| kerel | ECB CBC WTF | 55 | |
| kabanchik_07 | XOR Properties | 15 | |
| Knic | Lazy CBC | 60 | |
| itamar_rot | Missing Modulus | 80 | |
| dkoazwlearning | Adrien's Signs | 80 | |
| samuel123 | Favourite byte | 20 | |
| jarinios | Noise Free | 40 | |
| rightnite | Manyprime | 40 | |
| dkoazwlearning | Chinese Remainder Theorem | 40 | |
| amisa | Quadratic Residues | 25 | |
| valh4x | Ticket Maestro (CryptoHack) | 0 | |
| valh4x | Ticket Maestro | 200 | |
| samuel123 | XOR Properties | 15 | |
| rightnite | Monoprime | 30 | |
| abraxii | Symmetry | 50 | |
| dkoazwlearning | Modular Square Root | 35 | |
| rightnite | Factoring | 15 | |
| itamar_rot | Backpack Cryptography | 120 | |
| amisa | Modular Inverting | 25 | |
| rightnite | RSA Signatures | 25 | |
| manuel_racle | The Good, The Pad, The Ugly | 100 | |
| amisa | Modular Arithmetic 2 | 20 | |
| Aakash_Tarang | Legendre Symbol | 35 | |
| rightnite | RSA Decryption | 20 | |
| Abel2004 | Modular Inverting | 25 | |
| Abel2004 | Modular Arithmetic 2 | 20 | |
| Abel2004 | Modular Arithmetic 1 | 20 |
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