Openssl rsa sign create and check example

#!/bin/bash

echo 'Задница' > file.txt
openssl genrsa -out rsa.pvt 1024
openssl rsa -in rsa.pvt -pubout -out rsa.pub
openssl dgst -sign rsa.pvt -out sign.txt -md5 file.txt
openssl dgst  -verify rsa.pub -signature sign.txt file.txt