HILL CIPHER

The Hill Cipher stands as a classical encryption method within the realm of cryptography. It operates by dividing the plaintext message into blocks of fixed length, treating each block as a vector of numerical values corresponding to the characters. These vectors are then multiplied by a secret key matrix, resulting in encrypted vectors that constitute the ciphertext. During decryption, the inverse of the key matrix is employed to revert the process and recover the original plaintext. The security of the Hill Cipher hinges on the mathematical properties of matrix operations, rendering it more resilient against basic cryptographic attacks compared to simpler substitution ciphers.