Block Ciphers

Block ciphers are a method of securing information by transforming fixed-size blocks of data into unreadable forms using a secret key. Think of it as locking a message in a digital box—only someone with the correct key can unlock and read it. The process involves applying an algorithm repeatedly to scramble the data in such a way that, without the key, it appears as random noise. Block ciphers are widely used in securing communications, such as encrypting emails or data storage, providing confidentiality and protecting information from unauthorized access.