Improved encryption implementation

lib/core/persistence/models/key.js

@@ -12,6 +12,10 @@ module.exports = function (sequelize, DataTypes, options) {
             type: DataTypes.STRING,
             allowNull: false
         },
+        iv: {
+            type: DataTypes.STRING,
+            allowNull: false
+        },
         name: {
             type: DataTypes.STRING,
             unique: true