Final answer:
True, hash functions can be applied to any sized message.
Step-by-step explanation:
True, hash functions can be applied to any sized message. A hash function is a mathematical function that takes an input (or message) and returns a fixed-size string of bytes, which is typically represented as a sequence of hexadecimal characters. The size of the input message doesn't matter because the hash function will always produce a fixed-size output.
For example, the SHA-256 hash function takes any length of message as input and produces a 256-bit hash value. It doesn't matter if the message is a short sentence or a long document, the output will always be the same length.
This property makes hash functions useful in many applications, such as data integrity checks, password storage, and digital signatures.