CheckIt: verify checksum from Firefox context menu

[lovinglinux]

I have developed a new extension for Firefox that allows compare a file checksum with the checksum posted on the download site.

The extension is pretty simple, but very useful for me. You can simply select the hash number displayed on a site, then select the algorithm and pick a file to compare. The extension will compare the checksum selected from the site with the one generated from the file and produce a positive message or an negative alert.

It supports MD2, MD5, SHA-1, SHA-256, SHA-384 and SHA-512 algorithms.



Download, Video Demo & Instructions

Any comments and suggestions will be much appreciated. I hope you like it.

[dearingj]

Looks useful; I'm downloading it now.

[lovinglinux]

Looks useful; I'm downloading it now.

Thanks. Well, I am a suspect, but is really useful for me. I thought about this add-on while I was preparing to download and install Lucid Linx yesterday. I postponed the installation of the OS and created the extension. So here it is.

[undecim]

Very nice. I'm installing it now!

I have the Web Developer plugin as well, so I'll let you know if I have any issues with it.

EDIT: Update:

I installed it and it works like a charm! This will save me a lot of time!

Only problem I see is that it doesn't trim whitespace from the selected area. I tried one hash with and the same one without the trailing tab, but it tells me they mismatch (even though the error dialog shows the exact same hashes, lol).

Another feature that would be great is if the addon would recognize hashes on the page and let you just right-click instead of highlighting (this might even workaround the Web Dev comparability issue... idk)

Again, it's great piece of code, and I thank you for it!

[lovinglinux]

Only problem I see is that it doesn't trim whitespace from the selected area. I tried one hash with and the same one without the trailing tab, but it tells me they mismatch (even though the error dialog shows the exact same hashes, lol).

This should be easily fixable. Could you please provide a link to the hash so I can test it.

Another feature that would be great is if the addon would recognize hashes on the page and let you just right-click instead of highlighting (this might even workaround the Web Dev comparability issue... idk)

What I do is double click over the hash and Firefox selects the entire string. Nevertheless, I guess I could implement that feature. I will look into it.

Again, it's great piece of code, and I thank you for it!

You are welcome. Thanks for the suggestion and bug report.

[undecim]

This should be easily fixable. Could you please provide a link to the hash so I can test it.

at

http://www.gtlib.gatech.edu/pub/linu...8/sha1sums.txt

the hash for archlinux-2009.08-core-x86_64.img

I selected the hash and the space (tab) between the hash and file name, which causes a false negative.

falsenegative.png

Selecting only the hash (or doubleclicking, like you mentioned) works fine though.

[lovinglinux]

at

http://www.gtlib.gatech.edu/pub/linu...8/sha1sums.txt

the hash for archlinux-2009.08-core-x86_64.img

I selected the hash and the space (tab) between the hash and file name, which causes a false negative.

falsenegative.png

Selecting only the hash (or doubleclicking, like you mentioned) works fine though.

EDIT:

the fix is not working as I thought it was. I will fix this for next version.

[lovinglinux]

I did something really stupid on the allegedly fixed version, but I won't tell

[Hero of the Day]

awesome!

[lovinglinux]

CheckIt has been approved by Mozilla, so now you can get updates automatically, through Firefox Add-ons manager. Please install the latest versio to make sure you will get future updates.