Is the sshkey same?

isSameSSHKEY

# Author: Esonhugh
# Date: 2021/12/14 19:43 UTC+0800
function isSameSSHKEY () {
        PRIVKEY=$1 
        TESTKEY=$2 
        if [[ -z "$PRIVKEY" ]]
        then
                PRIVKEY="id_rsa" 
                echo "No PRIVKEY chosen Set as id_rsa"
        fi
        if [[ -z "$TESTKEY" ]]
        then
                TESTKEY="$PRIVKEY.pub" 
                echo "No PUBKEY chosen Set as $PRIVKEY.pub"
        fi
        echo "PRIKEY is $PRIVKEY "
        echo "PUBKEY is $TESTKEY"
        echo ""
        echo "diff command runs ....."
        diff --color=auto <( ssh-keygen -y -e -f "$PRIVKEY" ) <( ssh-keygen -y -e -f "$TESTKEY" )
        if [[ $? -eq 0 ]]
        then
                echo "success! is same!"
        else
                echo "bad! not matched!"
        fi
}

SGTM