SQLite with encryption/password protection

Question

I\'m just learning to use SQLite and I was curious if such is possible:

1. Encryption of the database file?

2. Password protect opening of the dat

Answer 1

You can use SQLite's function creation routines (PHP manual):

$db_obj->sqliteCreateFunction('Encrypt', 'MyEncryptFunction', 2);
$db_obj->sqliteCreateFunction('Decrypt', 'MyDecryptFunction', 2);

When inserting data, you can use the encryption function directly and INSERT the encrypted data or you can use the custom function and pass unencrypted data:

$insert_obj = $db_obj->prepare('INSERT INTO table (Clear, Encrypted) ' .
 'VALUES (:clear, Encrypt(:data, "' . $passwordhash_str . '"))');

When retrieving data, you can also use SQL search functionality:

$select_obj = $db_obj->prepare('SELECT Clear, ' .
 'Decrypt(Encrypted, "' . $passwordhash_str . '") AS PlainText FROM table ' .
 'WHERE PlainText LIKE :searchterm');