How many secure hash algorithms does the Secure Hash Standard specify?

The Secure Hash Standard (SHS), defined in the Federal Information Processing Standards (FIPS) publication, specifies five distinct secure hash algorithms. These algorithms are known as SHA-0, SHA-1, SHA-256, SHA-384, and SHA-512. Each of these algorithms serves various applications in cryptographic processes, offering different levels of security and performance suitable for different needs and environments.

The algorithms are widely used in various security protocols and applications, demonstrating the standard's importance in the realm of information security. Understanding that there are five specified algorithms is crucial, as it highlights the evolution and scenarios in which each might be applicable, ensuring that operators can select the most appropriate algorithm for their hashing needs.