Added SQCipher support for SQLite (#6366)

changelog.md

 # Future
+- [ADDED] SQLCipher support via the SQLite connection manager
 - [CHANGED] Range type bounds now default to [postgres default](https://www.postgresql.org/docs/9.5/static/rangetypes.html#RANGETYPES-CONSTRUCT) `[)` (inclusive, exclusive) [#5990](https://github.com/sequelize/sequelize/issues/5990)
 - [ADDED] Support for range operators [#5990](https://github.com/sequelize/sequelize/issues/5990)
 - [FIXED] Broken transactions in `MySQL` [#3568](https://github.com/sequelize/sequelize/issues/3568)

lib/dialects/sqlite/connection-manager.js

@@ -67,6 +67,10 @@ class ConnectionManager extends AbstractConnectionManager {
         }
       );
     }).tap(connection => {
+      if (this.sequelize.config.password) {
+        // Make it possible to define and use password for sqlite encryption plugin like sqlcipher
+        connection.run('PRAGMA KEY=' + this.sequelize.escape(this.sequelize.config.password));
+      }
       if (this.sequelize.options.foreignKeys !== false) {
         // Make it possible to define and use foreign key constraints unless
         // explicitly disallowed. It's still opt-in per relation

lib/sequelize.js

@@ -57,7 +57,7 @@ const _ = require('lodash');
   *
   * @param {String}   database The name of the database
   * @param {String}   [username=null] The username which is used to authenticate against the database.
-  * @param {String}   [password=null] The password which is used to authenticate against the database.
+  * @param {String}   [password=null] The password which is used to authenticate against the database. Supports SQLCipher encryption for SQLite.
   * @param {Object}   [options={}] An object with options.
   * @param {String}   [options.host='localhost'] The host of the relational database.
   * @param {Integer}  [options.port=] The port of the relational database.