openssl command line to verify the signature

Question

Hi I have generated a key pair and used the private key to generate a signature.

openssl rsautl -sign -in helloworld.txt -inkey aa.pem -out sig

Answer 1

Verify using public key

echo "plop" > "helloworld.txt"
openssl rsautl -sign -in hello.txt -inkey private.pem -out sig
openssl rsautl -verify -in sig -inkey public.pem -pubin
> plop