Description: Plain text is the original, unencrypted information that is input into a cryptographic algorithm. This type of text is fundamental in the field of cryptography, as it represents the content that needs to be protected through encryption techniques. Unlike ciphertext, which is the result of applying a cryptographic algorithm and cannot be understood without the appropriate key, plain text is readable and comprehensible. Its simple and direct nature makes it the starting point for any encryption process. In practice, plain text can include messages, passwords, sensitive data, or any type of information that requires protection. The security of information largely depends on the quality of the encryption applied to the plain text, as well as the strength of the keys used. Therefore, plain text is not only relevant from a technical standpoint but also raises important considerations about privacy and data security in an increasingly digital world.