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Add a check for a change of key between CSR and existing cert. #926

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Add a check for a change of key between CSR and existing cert. #926

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Original file line number Diff line number Diff line change
Expand Up @@ -1824,6 +1824,25 @@ command_sign_domains() {
fi
fi

# Check pubkey of existing certificate aginst pubkey in csr.
if [[ -e "${cert}" && -n "${csr}" && "${force_renew}" = "no" ]]; then
printf " + Checking public key of existing cert..."

hash_cert="$(${OPENSSL} x509 -in "${cert}" -pubkey -noout|${OPENSSL} pkey -pubin -outform DER|"${OPENSSL}" dgst -sha256|awk '{ print $2 }')"
hash_csr="$(echo "${csr}"|${OPENSSL} req -pubkey -noout 2>/dev/null|${OPENSSL} pkey -pubin -outform DER|"${OPENSSL}" dgst -sha256|awk '{ print $2 }')"

if [[ "${hash_cert}" = "${hash_csr}" ]]; then
echo " unchanged."
else
echo " changed!"
echo " + Key is not matching!"
echo " + Key hash for old certificate: ${hash_cert}"
echo " + Key hash for csr: ${hash_csr}"
echo " + Forcing renew."
force_renew="yes"
fi
fi

# Check expire date of existing certificate
if [[ -e "${cert}" ]]; then
echo " + Checking expire date of existing cert..."
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