cryptoeasy

Холмы (Hills)

hackerlab

Task: Decrypt a Hill cipher given a 6x6 matrix of ASCII codes and ciphertext. Solution: Decode the matrix to get the hint (Lester Sanders Hill), calculate the modular inverse of the key matrix (mod 27), and decrypt the ciphertext in 6-character blocks.

$ ls tags/ techniques/
classical_cryptographyhill_ciphermatrix_ciphermodular_inverseascii_hintlinear_algebra
Hill cipher decryption with 6x6 key matrixASCII code interpretation for hint extractionModular matrix inverse calculation (mod 27)
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