The solution: don't encrypt the whole DB_File. The Berkley DB library wants to deal with the database file on disk. The best solution is not encrypt the whole file, but the individual keys and values that you want to protect.
One trick you could use is to decrypt to a temporary file, tie with DB_File, and unlink the file. Unix systems will keep the file around until the filehandle is closed. DB_File supports anonymous maps that work this way. The problem is relying on Berkeley DB not opening new filehandles or closing its existing filehandles. Also, it makes getting the modified file difficult.
Another trick is put the unencrypted database file on a RAM disk that is only readable by the user running the script.
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.
| & || & |
| < || < |
| > || > |
| [ || [ |
| ] || ] ||