[ovs-dev] [PATCH v4 7/9] ovs-pki: generate x.509 v3 certificate
Qiuyu Xiao
qiuyu.xiao.qyx at gmail.com
Tue Jul 31 21:08:52 UTC 2018
This patch modifies ovs-pki to generate x.509 version 3 certificate.
Compared with the x.509 v1 certificate generated by ovs-pki, version 3
certificate adds subjectAltName field and sets its value the same as
common name (CN). The main reason for this change is to enable
strongSwan IKE daemon to extract certificate identity string from the
subjectAltName field, which makes OVN IPsec implementation easier.
Signed-off-by: Qiuyu Xiao <qiuyu.xiao.qyx at gmail.com>
---
NEWS | 3 +++
utilities/ovs-pki.in | 25 +++++++++++++++++++++----
2 files changed, 24 insertions(+), 4 deletions(-)
diff --git a/NEWS b/NEWS
index f05a6e976..27ef12d59 100644
--- a/NEWS
+++ b/NEWS
@@ -59,6 +59,9 @@ v2.10.0 - xx xxx xxxx
both kernel datapath and userspace datapath.
* Added port-based and flow-based ERSPAN tunnel port support, added
OpenFlow rules matching ERSPAN fields. See ovs-fields(7).
+ - ovs-pki
+ * ovs-pki now generates x.509 version 3 certificate. The new format adds
+ subjectAltName field and sets its value the same as common name (CN).
v2.9.0 - 19 Feb 2018
--------------------
diff --git a/utilities/ovs-pki.in b/utilities/ovs-pki.in
index 4f6941865..e0ba910f9 100755
--- a/utilities/ovs-pki.in
+++ b/utilities/ovs-pki.in
@@ -284,7 +284,7 @@ policy = policy # default policy
email_in_dn = no # Don't add the email into cert DN
name_opt = ca_default # Subject name display option
cert_opt = ca_default # Certificate display option
-copy_extensions = none # Don't copy extensions from request
+copy_extensions = copy # Copy extensions from request
unique_subject = no # Allow certs with duplicate subjects
# For the CA policy
@@ -295,6 +295,13 @@ organizationName = match
organizationalUnitName = optional
commonName = supplied
emailAddress = optional
+
+# For the x509v3 extension
+[ ca_cert ]
+basicConstraints=CA:true
+
+[ usr_cert ]
+basicConstraints=CA:false
EOF
fi
@@ -307,7 +314,8 @@ EOF
openssl req -config ca.cnf -nodes \
-newkey $newkey -keyout private/cakey.pem -out careq.pem \
1>&3 2>&3
- openssl ca -config ca.cnf -create_serial -out cacert.pem \
+ openssl ca -config ca.cnf -create_serial \
+ -extensions ca_cert -out cacert.pem \
-days 3650 -batch -keyfile private/cakey.pem -selfsign \
-infiles careq.pem 1>&3 2>&3
chmod 0700 private/cakey.pem
@@ -445,6 +453,7 @@ make_request() {
[ req ]
prompt = no
distinguished_name = req_distinguished_name
+req_extensions = v3_req
[ req_distinguished_name ]
C = US
@@ -453,6 +462,9 @@ L = Palo Alto
O = Open vSwitch
OU = Open vSwitch certifier
CN = $cn
+
+[ v3_req ]
+subjectAltName = DNS:$cn
EOF
if test $keytype = rsa; then
(umask 077 && openssl genrsa -out "$1-privkey.pem" $bits) 1>&3 2>&3 \
@@ -481,7 +493,7 @@ sign_request() {
esac
(cd "$pkidir/${type}ca" &&
- openssl ca -config ca.cnf -batch -in "$request_file") \
+ openssl ca -config ca.cnf -extensions usr_cert -batch -in "$request_file") \
> "$2.tmp$$" 2>&3
mv "$2.tmp$$" "$2"
}
@@ -529,11 +541,16 @@ elif test "$command" = self-sign; then
must_exist "$arg1-req.pem"
must_exist "$arg1-privkey.pem"
must_not_exist "$arg1-cert.pem"
+ make_tmpdir
+ cat > "$TMP/v3.ext" <<EOF
+subjectAltName = DNS:$arg1
+EOF
# Create both the private key and certificate with restricted permissions.
(umask 077 && \
openssl x509 -in "$arg1-req.pem" -out "$arg1-cert.pem.tmp" \
- -signkey "$arg1-privkey.pem" -req -days 3650 -text) 2>&3 || exit $?
+ -signkey "$arg1-privkey.pem" -req -days 3650 -text \
+ -extfile $TMP/v3.ext) 2>&3 || exit $?
# Reset the permissions on the certificate to the user's default.
cat "$arg1-cert.pem.tmp" > "$arg1-cert.pem"
--
2.18.0
More information about the dev
mailing list