| Date | User | Challenge | Score |
| skipped | Chinese Remainder Theorem | 40 | |
| wgao4000 | Modular Exponentiation | 10 | |
| skipped | Modular Square Root | 35 | |
| Elshan | Bean Counter | 60 | |
| Elshan | Symmetry | 50 | |
| Elshan | Flipping Cookie | 60 | |
| Elshan | ECB CBC WTF | 55 | |
| Elshan | ECB Oracle | 60 | |
| melnicek | RSA or HMAC? | 35 | |
| melnicek | No Way JOSE | 20 | |
| melnicek | RSA vs RNG | 150 | |
| melnicek | Vote for Pedro | 150 | |
| Elshan | Passwords as Keys | 50 | |
| Elshan | Modes of Operation Starter | 15 | |
| Elshan | Bringing It All Together | 50 | |
| cubaureo | XOR Starter | 10 | |
| Elshan | Diffusion through Permutation | 30 | |
| Elshan | Confusion through Substitution | 25 | |
| melnicek | Armory | 100 | |
| mypalpal | Crossed Wires | 100 | |
| Elshan | Round Keys | 20 | |
| melnicek | Ron was Wrong, Whit is Right | 90 | |
| melnicek | Bespoke Padding | 100 | |
| Elshan | Structure of AES | 15 | |
| Elshan | Resisting Bruteforce | 10 | |
| Elshan | Modular Binomials | 80 | |
| melnicek | Blinding Light | 120 | |
| melnicek | Endless Emails | 150 | |
| Elshan | You either know, XOR you don't | 30 | |
| Elshan | Favourite byte | 20 | |
| fjukh7872 | Couples | 100 | |
| ggerod | Point Negation | 10 | |
| melnicek | JWT Secrets | 25 | |
| melnicek | Token Appreciation | 5 | |
| Elshan | XOR Properties | 15 | |
| melnicek | Ellipse Curve Cryptography | 125 | |
| melnicek | Unencryptable | 125 | |
| melnicek | No Way Back Home | 100 | |
| melnicek | Marin's Secrets | 50 | |
| melnicek | Fast Primes | 75 | |
| melnicek | Null or Never | 100 | |
| melnicek | Infinite Descent | 50 | |
| melnicek | Everything is Still Big | 100 | |
| melnicek | Crossed Wires | 100 | |
| grazkaa | CTRIME | 70 | |
| Elshan | XOR Starter | 10 | |
| Elshan | Bytes and Big Integers | 10 | |
| Zawa08 | You either know, XOR you don't | 30 | |
| melnicek | RSA Decryption | 20 | |
| melnicek | Private Keys | 20 |
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