X-Git-Url: https://osm.etsi.org/gitweb/?p=osm%2FN2VC.git;a=blobdiff_plain;f=n2vc%2Futils.py;h=16a47332cf284cba606dc27b5af3e281d902e15a;hp=e8cf64dac123207f6023ca18ac035ebe9f1840e0;hb=a4f57d6260e6520aa6a89e86f9d1b2ca5e0a3a08;hpb=c38a696d168531e3c067451044262ef4d78ef11f

diff --git a/n2vc/utils.py b/n2vc/utils.py
index e8cf64d..16a4733 100644
--- a/n2vc/utils.py
+++ b/n2vc/utils.py
@@ -12,11 +12,31 @@
 #     See the License for the specific language governing permissions and
 #     limitations under the License.
 
+import base64
+import re
+import binascii
 from enum import Enum
 from juju.machine import Machine
 from juju.application import Application
 from juju.action import Action
 from juju.unit import Unit
+from n2vc.exceptions import N2VCInvalidCertificate
+
+
+def base64_to_cacert(b64string):
+    """Convert the base64-encoded string containing the VCA CACERT.
+
+    The input string....
+
+    """
+    try:
+        cacert = base64.b64decode(b64string).decode("utf-8")
+
+        cacert = re.sub(r"\\n", r"\n", cacert,)
+    except binascii.Error as e:
+        raise N2VCInvalidCertificate(message="Invalid CA Certificate: {}".format(e))
+
+    return cacert
 
 
 class N2VCDeploymentStatus(Enum):