| Date | User | Challenge | Score |
| DedekSaputra | Square Eyes | 35 | |
| HassanZeb | ECB CBC WTF | 55 | |
| DedekSaputra | Inferius Prime | 30 | |
| DedekSaputra | Modular Binomials | 80 | |
| DedekSaputra | Adrien's Signs | 80 | |
| zafa | The Matrix | 75 | |
| DedekSaputra | Successive Powers | 60 | |
| SISroot | Toshi's Treasure | 150 | |
| DedekSaputra | Chinese Remainder Theorem | 40 | |
| DedekSaputra | Modular Square Root | 35 | |
| DedekSaputra | Legendre Symbol | 35 | |
| DedekSaputra | Quadratic Residues | 25 | |
| DedekSaputra | Bean Counter | 60 | |
| DedekSaputra | Symmetry | 50 | |
| DedekSaputra | Passwords as Keys | 50 | |
| DedekSaputra | Modes of Operation Starter | 15 | |
| DedekSaputra | Modular Inverting | 25 | |
| azhariafitria | Unencryptable | 125 | |
| DedekSaputra | Modular Arithmetic 2 | 20 | |
| HassanZeb | ECB Oracle | 60 | |
| DedekSaputra | Modular Arithmetic 1 | 20 | |
| DedekSaputra | Extended GCD | 20 | |
| DedekSaputra | Greatest Common Divisor | 15 | |
| DedekSaputra | You either know, XOR you don't | 30 | |
| phutrong2111 | Private Keys | 20 | |
| DedekSaputra | Favourite byte | 20 | |
| DedekSaputra | XOR Properties | 15 | |
| DedekSaputra | XOR Starter | 10 | |
| phutrong2111 | Euler's Totient | 20 | |
| DedekSaputra | Bytes and Big Integers | 10 | |
| DedekSaputra | Base64 | 10 | |
| azhariafitria | Ellipse Curve Cryptography | 125 | |
| azhariafitria | No Way Back Home | 100 | |
| azhariafitria | Broken RSA | 100 | |
| phutrong2111 | Public Keys | 15 | |
| HassanZeb | Passwords as Keys | 50 | |
| azhariafitria | Successive Powers | 60 | |
| HassanZeb | Modes of Operation Starter | 15 | |
| azhariafitria | Dancing Queen | 120 | |
| khalidputra | Export-grade | 100 | |
| DonCharbel | Generators of Groups | 20 | |
| HassanZeb | Bringing It All Together | 50 | |
| khalidputra | Parameter Injection | 60 | |
| DonCharbel | Working with Fields | 10 | |
| SISroot | WOTS Up 2 | 90 | |
| jaylett23 | Confusion through Substitution | 25 | |
| Mutiaaa | Unencryptable | 125 | |
| khalidputra | Deriving Symmetric Keys | 40 | |
| DonCharbel | Modulus Inutilis | 50 | |
| jaylett23 | Round Keys | 20 |
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