How to get the MD5 checksum for a file

MD5 Hashsums are use to confirm the integrity of files. That is especially important when very large files are downloaded or moved from one location to another. To check the integrity of a file, its corresponding MD5 file can be downloaded and compared to the MD5 created locally on the file downloaded.


The program below can be used to create the MD5 hash for a file using the Apache Commons Codec lib:



The Windows program "md5sums" creates MD5 hashes.

In Unix, the BSD program "md5sum" creates MD5 hashes.


Reference
http://www.rgagnon.com/javadetails/java-0416.html

http://commons.apache.org/codec/

http://www.pc-tools.net/win32/md5sums/

Enforcing database security policies

Here is a script that displays the attributes you’ll use most often for enforcing database security policies: This view provides useful information that can be used in implementing your security policies. For example, the user’s IP address and authentication mode are available and can be used to govern what a user has access to. The Client Identifier can be set by an application and used to track and trace connected sessions. Reference: Effective Oracle Database 10g Security by Design by David Knox