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@ezimuel
ezimuel / sign.sh
Created March 14, 2016 15:50
Sign and verify a file using OpenSSL command line tool. It exports the digital signature in Base64 format.
#!/bin/bash
# Sign a file with a private key using OpenSSL
# Encode the signature in Base64 format
#
# Usage: sign <file> <private_key>
#
# NOTE: to generate a public/private key use the following commands:
#
# openssl genrsa -aes128 -passout pass:<passphrase> -out private.pem 2048
# openssl rsa -in private.pem -passin pass:<passphrase> -pubout -out public.pem