Feature Request: CRC/checksums

[Keatah]

The addition of a column displaying a CRC/checksum would be nice and helpful for archiving and curating multiple versions of a program/file. Something like how WinZIP and WinRAR do it.

Instead, what I have to do is export the file to windows and do a bit-by-bit comparison there.

[fadden]

With WinZip, you have a single file that has had a CRC32 computed as part of compression.

With ShrinkIt you can have multiple forks, so we might have to show more than one CRC. The way in which the CRC16 was computed depends on which version of ShrinkIt was used, so identical files might have different CRCs (though not if they were compressed by the same program). CRCs are only present on ShrinkIt-compressed files, not in disk images.

So it's possible to show CRCs in some situations, but it's not quite as straightforward a problem as it is for Windows archivers.

[Keatah]

I was thinking of simply reading each file in a disk image (automatically or on demand) and computing a CRC on the fly as the catalog is displayed.