CDF_SET_MD5CHECKSUM
===================

The CDF_SET_MD5CHECKSUM procedure calculates and inserts a MD5 checksum into 
a CDF file. If you use the /REMOVE keyword, a previously-inserted checksum is 
removed from the file.

By default, the checksums are not inserted into new files. Once the checksum 
is inserted into a particular file, a data integrity check of the file is 
performed every time it is opened. A new checksum is computed and stored when 
the file is closed. The overhead for this operation may be noticeable for large 
files. You may wish to remove the checksum once the integrity of the file has 
been verified.

Examples

The following example calculates and inserts a MD5 checksum inside of a CDF 
file.

id = CDF_CREATE('myfile.cdf')

CDF_SET_MD5CHECKSUM, id

CDF_CLOSE, id

Syntax

CDF_SET_MD5CHECKSUM, Id, [, /REMOVE]

Arguments

Id

The CDF ID, returned from a previous call to CDF_OPEN or CDF_CREATE.

Keywords

REMOVE

Remove a previously-created checksum from the CDF file.

Version History

 

7.0.3

Introduced


© 2015 Exelis Visual Information Solutions, Inc., a subsidiary of Harris 
Corporation. All Rights Reserved. This information is not subject to the 
controls of the International Traffic in Arms Regulations (ITAR) or the Export 
Administration Regulations (EAR). However, this information may be restricted 
from transfer to various embargoed countries under U.S. laws and regulations.