| Date | User | Challenge | Score |
| dgeeur | ASCII | 5 | |
| sundul969 | MD0 | 80 | |
| binggangan | Finding Flags | 2 | |
| starnotes | Find the Lattice | 100 | |
| buf7er_0vf | Favourite byte | 20 | |
| bluejay820 | Hex | 5 | |
| skadi | Great Snakes | 3 | |
| skadi | Finding Flags | 2 | |
| dgeeur | Great Snakes | 3 | |
| shylynn | Public Keys | 15 | |
| mifzal5331 | Greatest Common Divisor | 15 | |
| shylynn | Modular Exponentiation | 10 | |
| shylynn | Bean Counter | 60 | |
| xumu | Finding Flags | 2 | |
| shylynn | Symmetry | 50 | |
| dgeeur | Finding Flags | 2 | |
| thisismetrying | Triple DES | 60 | |
| shylynn | Flipping Cookie | 60 | |
| shylynn | ECB CBC WTF | 55 | |
| shylynn | ECB Oracle | 60 | |
| shylynn | Passwords as Keys | 50 | |
| minjun | No Leaks | 100 | |
| shylynn | Modes of Operation Starter | 15 | |
| sundul969 | PriMeD5 | 100 | |
| shylynn | Modular Binomials | 80 | |
| zanderzhang | Base64 | 10 | |
| shylynn | Adrien's Signs | 80 | |
| shylynn | Chinese Remainder Theorem | 40 | |
| shylynn | Modular Square Root | 35 | |
| shylynn | Legendre Symbol | 35 | |
| zanderzhang | Hex | 5 | |
| zanderzhang | ASCII | 5 | |
| abbymaina | Salty | 20 | |
| zanderzhang | Great Snakes | 3 | |
| abbymaina | Manyprime | 40 | |
| inthezonewithme | Bytes and Big Integers | 10 | |
| abbymaina | Monoprime | 30 | |
| abbymaina | Factoring | 15 | |
| zanderzhang | Finding Flags | 2 | |
| sundul969 | WOTS Up 2 | 90 | |
| sundul969 | WOTS Up | 75 | |
| abbymaina | RSA Signatures | 25 | |
| sundul969 | Merkle Trees | 25 | |
| abbymaina | RSA Decryption | 20 | |
| abbymaina | Private Keys | 20 | |
| abbymaina | Euler's Totient | 20 | |
| abbymaina | Public Keys | 15 | |
| darkone | Quadratic Residues | 25 | |
| abbymaina | Modular Exponentiation | 10 | |
| abbymaina | Bean Counter | 60 |
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