How to generate hash codes on output during export to prove the authenticity of exported files.

SYMPTOMS

If you want to be able to prove the authenticity of exported (fields) files you can generate hash codes using the ZyFIND export settings.

Hash codes are used to prove the authenticity of files.

A hash code is a string, presented as 40 hex characters.

This hash code is calculated based on the contents of a text (TXT/XML/PDF/etc.) or an image (TIFF) file.

CAUSE

Not applicable

RESOLUTION

In the result list or ZyVIEW go to File | Export and select the option 'Generate hash code on output' in the ZyFIND export settings.

The files (and/or fields) are exported, with the accompanying hash codes.
The hash code for exported files is based on a hash code calculation of the original documents in the index.
If you are exporting several (fields) files, a separate hash code is created for each file.

All hash codes are summarized in one text (TXT) file.
The name of this text file consists of the hash code which is calculated based on all collected hash codes
(without the filepaths).

This hash code summary text file enables you to prove the authenticity of a set of (exported) files at once.

APPLIES TO

6.2; 6.2 Service Pack 1; 6.2 Service Pack 2; 6.3