Switch to relying on the configuration key in the configuration file

lemur/certificates/models.py

@@ -5,19 +5,17 @@
     :license: Apache, see LICENSE for more details.
 .. moduleauthor:: Kevin Glisson <kglisson@netflix.com>
 """
-import os
 import datetime
+from flask import current_app
 
 from cryptography import x509
 from cryptography.hazmat.backends import default_backend
-
-from flask import current_app
-
 from sqlalchemy.orm import relationship
 from sqlalchemy import event, Integer, ForeignKey, String, DateTime, PassiveDefault, func, Column, Text, Boolean
 
 from sqlalchemy_utils import EncryptedType
 
+from lemur.utils import get_key
 from lemur.database import db
 from lemur.plugins.base import plugins
 
@@ -211,7 +209,7 @@ class Certificate(db.Model):
     id = Column(Integer, primary_key=True)
     owner = Column(String(128))
     body = Column(Text())
-    private_key = Column(EncryptedType(String, os.environ.get('LEMUR_ENCRYPTION_KEY')))
+    private_key = Column(EncryptedType(String, get_key))
     status = Column(String(128))
     deleted = Column(Boolean, index=True)
     name = Column(String(128))