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How to create a copy of the DB, decryptedDB, that has decrypted subjects in the table
'decrypted_subject':

0. Set up for encryption per the instructions in scheduler/SETUP/ENCRYPTION.txt

1. Copy PROD to a decrypted DB, e.g. 'decryptedDB'. (Since subject data is sensitive, we
   recommend that this DB be on a separate server, on an encrypted drive.)

2. Run the provided SQL script, createDecryptedSubjectTable.sql on your decrypted DB

3. Adjust conf/decrypter.properties as appropriate for your decryptedDB

Assuming for example that your institution is 'MySite':

4u. On Unix
     chmod +x decrypter.sh
     ./subject-decrypter.sh MySite


4w. On Windows
     ./decrypter.cmd MySite

5. Take a look, via an SQL client, at the 'decrypted_subject' table in the decrypted DB.
You should see decrypted data for the subjects

The decrypted_subject table is a memory-based table, so it is possible that your default
heap size will not be large enough. If you get an out-of-memory error when creating the
table, try making your memory larger, e.g., 160000000, via the mySql command

set @@max_heap_table_size=160000000;

