The Hill Cipher Algorithm for Data Encryption and Decryption
Ayush Gupta · International Journal of Advanced Research in Science Communication and Technology · 2022
The science of encoding and decoding signals is known as cryptography. Cryptography is frequently used in people's daily life to keep sensitive data, such as Mastercard data, safe. Many regular exercises can be easily viewed by unintentional outsiders via the Internet. Hill cipher is a simple linear transformation represented by a matrix that is a traditional cryptography based on linear algebra. It is one of the symmetric key algorithms with various data encryption advantages. However, the inverse of the plaintext encryption key matrix is not always available. The encrypted text cannot be decoded if the key matrix is not invertible. The key matrix employed for encryption in the Involutory matrix generation method is invertible. As a result, we do not need to find the inverse of the key matrix during decryption.