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matheussantana/OpenSSL Verify Signature in Bash

Forked from DustinD2/OpenSSL Verify Signature in Bash
Created January 22, 2018 20:16
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This is a sample openssl bash script to create a matching RSA key pair and create a signed sha1 digest of the script itself using the private key. The digest is then verified against the public key.
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OpenSSL Verify Signature in Bash
#!/bin/bash
#create our key pairs
openssl genrsa -out private.pem 2048
openssl rsa -in private.pem -pubout -out public.pem
#sign and verify
openssl dgst -sha1 -sign private.pem -out "$0".sha1 $0
openssl dgst -sha1 -verify public.pem -signature "$0".sha1 $0
#purposely not cleaning up after the program.
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