Useful PL/SQL function that returns an MD5 sum for a string
There was a useful link this week to a short PL/SQL function that can be used to return the MD5 sum of a string. Running a checksum of any data held in the database that is critical can be a useful thing to do. Also check summing the data dictionary or just the PL/SQL held there can also be a useful task to ensure that the dictionary has not been altered by a hacker for his own purposes.
The page on DBA-Village is titled http://www.dba-village.com/village/dvp_tips.TipDetails?TipIdA=2552 - (broken link) Returning MD5 hash, the function is clean and simple.