create a sha1 hash from a string in ruby

To create a SHA1 hash from a string in Ruby, you can use the OpenSSL library.

main.rb
require 'openssl'

string = "Hello, World!"

sha1_hash = OpenSSL::Digest::SHA1.hexdigest(string)

puts "SHA1 hash of '#{string}': #{sha1_hash}"
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Output:

main.rb
SHA1 hash of 'Hello, World!': 0a4d55a8d778e5022fab701977c5d840bbc486d0
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Here, we require the openssl library and define a string variable containing the text we want to hash.

Next, we use the OpenSSL::Digest::SHA1 class to create a SHA1 hash object. We then pass our string variable into the hexdigest method of the SHA1 hash object to generate the SHA1 hash in string format.

Finally, we print the SHA1 hash using puts.