cryptomedium

Harder encryptor

spbctf

Task: Iterative XOR encryption with known key where each position is XORed a different number of times. Solution: Track XOR parity per position - odd count means XOR with key, even count means plaintext.

$ ls tags/ techniques/
xorstream_cipherknown_keyiterative_encryption
xor_parity_analysisiterative_xor_reversal
🔒

Permission denied (requires tier.pro)

Sign in to access full writeups

Create a free account with GitHub, then upgrade to Pro.

$ssh [email protected]