| Date | User | Challenge | Score |
| mohammedalbadwi | Deriving Symmetric Keys | 40 | |
| mohammedalbadwi | Computing Shared Secrets | 30 | |
| mohammedalbadwi | Computing Public Values | 25 | |
| theOM | Favourite byte | 20 | |
| Gast | Bytes and Big Integers | 10 | |
| mohammedalbadwi | WOTS Up 2 | 90 | |
| mohammedalbadwi | WOTS Up | 75 | |
| mohammedalbadwi | Merkle Trees | 25 | |
| mohammedalbadwi | Invariant | 250 | |
| mohammedalbadwi | PriMeD5 | 100 | |
| mohammedalbadwi | Hash Stuffing | 50 | |
| mohammedalbadwi | Collider | 50 | |
| dgonzalez16 | You either know, XOR you don't | 30 | |
| dgonzalez16 | Favourite byte | 20 | |
| theOM | XOR Properties | 15 | |
| angelg12 | Favourite byte | 20 | |
| i4m3asy | Hex | 5 | |
| mohammedalbadwi | Jack's Birthday Confusion | 30 | |
| dgonzalez16 | XOR Properties | 15 | |
| mohammedalbadwi | Jack's Birthday Hash | 20 | |
| i4m3asy | ASCII | 5 | |
| mohammedalbadwi | Twin Keys | 100 | |
| mohammedalbadwi | No Difference | 175 | |
| mohammedalbadwi | MD0 | 80 | |
| mohammedalbadwi | MDFlag | 125 | |
| mohammedalbadwi | Mixed Up | 120 | |
| i4m3asy | Great Snakes | 3 | |
| i4m3asy | Finding Flags | 2 | |
| elalvarobalbin | Bean Counter | 60 | |
| elalvarobalbin | Symmetry | 50 | |
| elalvarobalbin | Flipping Cookie | 60 | |
| elalvarobalbin | ECB CBC WTF | 55 | |
| elalvarobalbin | ECB Oracle | 60 | |
| elalvarobalbin | Passwords as Keys | 50 | |
| elalvarobalbin | Modes of Operation Starter | 15 | |
| elalvarobalbin | Bringing It All Together | 50 | |
| elalvarobalbin | Diffusion through Permutation | 30 | |
| elalvarobalbin | Confusion through Substitution | 25 | |
| dgonzalez16 | XOR Starter | 10 | |
| elalvarobalbin | Round Keys | 20 | |
| elalvarobalbin | Structure of AES | 15 | |
| elalvarobalbin | Resisting Bruteforce | 10 | |
| elalvarobalbin | Keyed Permutations | 5 | |
| elalvarobalbin | You either know, XOR you don't | 30 | |
| elalvarobalbin | Favourite byte | 20 | |
| dgonzalez16 | Bytes and Big Integers | 10 | |
| BrianOjeda | You either know, XOR you don't | 30 | |
| elalvarobalbin | XOR Properties | 15 | |
| elalvarobalbin | XOR Starter | 10 | |
| angelg12 | XOR Properties | 15 |
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