gistfile1.txt

#!/bin/bash
DOMAIN="$1"
if [ -z "$DOMAIN" ]; then
    echo "Usage: $(basename $0) <domain>"
    exit 11
fi

fail_if_error() {
    [ $1 != 0 ] && {
        unset PASSPHRASE
        exit 10
    }
}
export PASSPHRASE=$(head -c 128 /dev/random  | uuencode - | grep -v "^end" | tr "\n" "d")

subj="
C=AU
ST=Victoria
O=Company
localityName=Melbourne
commonName=$DOMAIN
organizationalUnitName=Widgets
emailAddress=blah@blah.com
"

openssl genrsa -des3 -out $DOMAIN.key -passout env:PASSPHRASE 2048
fail_if_error $?

openssl req \
    -new \
    -batch \
    -subj "$(echo -n "$subj" | tr "\n" "/")" \
    -key $DOMAIN.key \
    -out $DOMAIN.csr \
    -passin env:PASSPHRASE
fail_if_error $?
cp $DOMAIN.key $DOMAIN.key.org
fail_if_error $?

openssl rsa -in $DOMAIN.key.org -out $DOMAIN.key -passin env:PASSPHRASE
fail_if_error $?

openssl x509 -req -days 365 -in $DOMAIN.csr -signkey $DOMAIN.key -out $DOMAIN.crt
fail_if_error $?