cryptoeasy
Загадка Евклида (Euclid's Riddle)
Райтапы
Task: XOR-encrypted ciphertext with Euclid reference in task name. Solution: Known plaintext attack reveals Golden Ratio (φ) as the key.
$ ls tags/ techniques/
Known plaintext attack using flag formatXOR key recovery from partial ciphertextMathematical constant as encryption key
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