| Date | User | Challenge | Score |
| Hikari_sama | XOR Starter | 10 | |
| d0m92 | Structure of AES | 15 | |
| alex1017 | You either know, XOR you don't | 30 | |
| pancake366 | ASCII | 5 | |
| tedda | Great Snakes | 3 | |
| d0m92 | Resisting Bruteforce | 10 | |
| karthiksiky | Encoding Challenge | 40 | |
| pancake366 | Great Snakes | 3 | |
| d0m92 | Keyed Permutations | 5 | |
| alex1017 | Favourite byte | 20 | |
| alex1017 | XOR Properties | 15 | |
| saus | Bruce Schneier's Password | 100 | |
| tedda | Finding Flags | 2 | |
| nixu_chiller | Network Attacks | 5 | |
| BeaBeaBear | Great Snakes | 3 | |
| amani_koros | Base64 | 10 | |
| asimsafar | Confusion through Substitution | 25 | |
| alex1017 | XOR Starter | 10 | |
| asimsafar | Round Keys | 20 | |
| alex1017 | Bytes and Big Integers | 10 | |
| alex1017 | Base64 | 10 | |
| alex1017 | Hex | 5 | |
| asimsafar | Structure of AES | 15 | |
| mikkeldeis | Ron was Wrong, Whit is Right | 90 | |
| i_Love_Ramona | Signing Server | 60 | |
| FranciscoSa7 | You either know, XOR you don't | 30 | |
| asimsafar | Resisting Bruteforce | 10 | |
| Dulce | Bean Counter | 60 | |
| asimsafar | Keyed Permutations | 5 | |
| Tomzi | Modular Binomials | 80 | |
| Dulce | Symmetry | 50 | |
| guyko | Flipping Cookie | 60 | |
| Tomzi | Adrien's Signs | 80 | |
| kjhdkjfshdk1 | Bytes and Big Integers | 10 | |
| Dulce | Flipping Cookie | 60 | |
| green3453 | Great Snakes | 3 | |
| Dulce | ECB CBC WTF | 55 | |
| Dulce | ECB Oracle | 60 | |
| alex1017 | ASCII | 5 | |
| Tomzi | Chinese Remainder Theorem | 40 | |
| Tomzi | Modular Square Root | 35 | |
| alex1017 | Great Snakes | 3 | |
| Dulce | Passwords as Keys | 50 | |
| green3453 | Finding Flags | 2 | |
| Dulce | Modes of Operation Starter | 15 | |
| Dulce | Bringing It All Together | 50 | |
| kjhdkjfshdk1 | Base64 | 10 | |
| Dulce | Diffusion through Permutation | 30 | |
| Tomzi | Legendre Symbol | 35 | |
| Tomzi | Quadratic Residues | 25 |
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