![]() ![]() Let us take an example where plain text is ‘ exam‘ which has to be converted to ciphertext with key-value as now, form the column matrices into 2×1 configurations and covert the text into numeric data assigning values to each alphabet from 0 to 25.Ĭonsider the first column matrix and substitute in the above formula: If the key matrix was 3×3, then each column matrix would be 3×1. Since the key matrix is 2×2, we take each column matrix as 2×1. The plain text vector is represented as a column matrices that are considered one at a time. The KEY is generally given in the problem statement. The working is shown below:ġ.Plain text that has to be converted into ciphertext.Ĭ is ciphertext, K is the key, P is the plain text vector. Encryption – Plain text to Cipher textĮncryption is converting plain text into ciphertext. There are two parts in the Hill cipher – Encryption and Decryption. ![]() ![]() Hill cipher is one of the techniques to convert a plain text into ciphertext and vice versa. CiphertextĪ ciphertext is a formatted text which is not understood by anyone. Before getting into this conversion let us first know what a ciphertext is. In order to avoid this, we need to convert the plain text data to a ciphertext. When you are sending a text message to a friend, you don’t want your message to be manipulated or misused by an intruder. Let’s learn how Hill Cipher works and everything you need to know about Hill Cipher with its implementation.
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