You want to use a hash digest to verify that the text file secret_text.txt is not modified. Your public key is my_public_key.pem and your private key is my_private_key.pem. Which command do you use to create the hash digest?
Question
You want to use a hash digest to verify that the text file secret_text.txt is not modified. Your public key is my_public_key.pem and your private key is my_private_key.pem. Which command do you use to create the hash digest?
Solution
To create a hash digest of the file secret_text.txt using your private key, you would use the OpenSSL command line tool with the dgst (digest) command. Here is the step-by-step process:
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Open your terminal.
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Navigate to the directory where your
secret_text.txt,my_public_key.pem, andmy_private_key.pemfiles are located using thecdcommand. -
Run the following command to create the hash digest:
openssl dgst -sha256 -sign my_private_key.pem -out secret_text.sha256 secret_text.txt
This command does the following:
openssl: This is the command line tool for OpenSSL.dgst -sha256: This tells OpenSSL to create a SHA-256 digest.-sign my_private_key.pem: This tells OpenSSL to sign the digest using your private key.-out secret_text.sha256: This tells OpenSSL to output the digest to a file namedsecret_text.sha256.secret_text.txt: This is the input file that you want to create a digest for.
After running this command, you will have a file named secret_text.sha256 in the same directory. This file contains the hash digest of secret_text.txt signed with your private key.
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