Step by Step solution about How to resolve the algorithm SHA-256 step by step in the Ruby programming language

The code provided is a simple Ruby program that uses the Digest module to calculate the SHA-256 hash of the string 'Rosetta code'. The Digest module provides a number of methods for calculating message digests, which are one-way cryptographic functions that produce a fixed-size hash value from an input message.

In this case, the SHA256 class is used to calculate the SHA-256 hash of the string 'Rosetta code'. The hexdigest method is then used to convert the hash value to a hexadecimal string. The resulting string is printed to the console using the puts method.

Here is a breakdown of the code:

• require 'digest/sha2' : This line requires the Digest module, which provides a number of methods for calculating message digests. The SHA2 submodule provides a number of SHA-2 hash functions, including SHA-256.
• puts Digest::SHA256.hexdigest('Rosetta code') : This line calculates the SHA-256 hash of the string 'Rosetta code' using the Digest::SHA256 class and the hexdigest method. The resulting string is printed to the console using the puts method.

The output of the program is a hexadecimal string that represents the SHA-256 hash of the string 'Rosetta code'. This hash value can be used to verify the integrity of the message or to compare it to other messages.

require 'digest/sha2'
puts Digest::SHA256.hexdigest('Rosetta code')