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SecurityYou can secure your Informix® database server and the data that is stored in your Informix® databases. You can encrypt data, secure connections, control user privileges and access, and audit data security.
Security in HCL Informix®The Informix® Security Guide documents methods for keeping your data secure by preventing unauthorized viewing and altering of data or database objects, including how to use the secure-auditing facility of the database server.
Securing data
Network data encryptionUse network encryption to encrypt data transmitted between server and client, and between server and other server.
Communication support modules for data transmission encryptionYou can use the communication support modules (CSMs) to encrypt data transmissions, including distributed queries, over the network.
Generating a new MAC key fileYou can generate a new MAC key file to improve the reliability of message verification using encryption.

Generating a new MAC key file

You can generate a new MAC key file to improve the reliability of message verification using encryption.

About this task

To generate a new MAC key file:

Procedure

Run the following command from the command line:
```
GenMacKey -o filename
```
The filename is the path and file name of the new MAC key file.
Update the central server's configuration to include the location of the new MAC key file in one of the following ways:
- Using encryption tags: Edit the relevant line in the concsm.cfg file to add a path and file name to the mac tag.
- Using encryption parameters: Edit the encryption parameters file to alter the value of the ENCCSM_MACFILES parameter.
If necessary, remove old MAC key file entries from the configuration.
Distribute the new MAC key file among all appropriate computers.

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