| Date | User | Challenge | Score |
| djsimpsondoh | SSH Keys | 35 | |
| djsimpsondoh | CERTainly not | 30 | |
| djsimpsondoh | Privacy-Enhanced Mail? | 25 | |
| akabeco | Greatest Common Divisor | 15 | |
| djsimpsondoh | Lemur XOR | 40 | |
| djsimpsondoh | Encoding Challenge | 40 | |
| emquantapgym | Computing Shared Secrets | 30 | |
| emquantapgym | Computing Public Values | 25 | |
| djsimpsondoh | Network Attacks | 5 | |
| emquantapgym | Generators of Groups | 20 | |
| emquantapgym | Working with Fields | 10 | |
| banshee | Euler's Totient | 20 | |
| supersonix03 | You either know, XOR you don't | 30 | |
| banshee | Public Keys | 15 | |
| supersonix03 | Favourite byte | 20 | |
| supersonix03 | XOR Properties | 15 | |
| supersonix03 | XOR Starter | 10 | |
| morpheus15 | Confusion through Substitution | 25 | |
| supersonix03 | Bytes and Big Integers | 10 | |
| banshee | Modular Exponentiation | 10 | |
| banshee | Keyed Permutations | 5 | |
| Kharonte | SSH Keys | 35 | |
| Kharonte | Transparency | 50 | |
| 100050 | Moving Problems | 150 | |
| supersonix03 | Base64 | 10 | |
| supersonix03 | Hex | 5 | |
| mixailflash | ASCII | 5 | |
| supersonix03 | ASCII | 5 | |
| mixailflash | Great Snakes | 3 | |
| mixailflash | Finding Flags | 2 | |
| supersonix03 | Bringing It All Together | 50 | |
| camale | Let's Decrypt | 80 | |
| supersonix03 | Network Attacks | 5 | |
| supersonix03 | Great Snakes | 3 | |
| supersonix03 | Finding Flags | 2 | |
| nguyentue | RSA Decryption | 20 | |
| mutant_ninja | Greatest Common Divisor | 15 | |
| r0ssett0 | Greatest Common Divisor | 15 | |
| mutant_ninja | You either know, XOR you don't | 30 | |
| emquantapgym | RSA Decryption | 20 | |
| Thaimeo2006 | Scalar Multiplication | 35 | |
| AlixAsha | Transparency | 50 | |
| Thaimeo2006 | Point Addition | 30 | |
| AlixAsha | SSH Keys | 35 | |
| emquantapgym | Private Keys | 20 | |
| AlixAsha | CERTainly not | 30 | |
| HellWorld | Network Attacks | 5 | |
| nisan | ASCII | 5 | |
| nguyentue | Private Keys | 20 | |
| Jyotiraditya | ASCII | 5 |
You are now level Current level