Cheap thoughts: digitally-signed images

Why aren’t cryptographic signatures wrapped around digital images in order to bolster their authenticity? Such a scheme would be strong proof that an image taken with a digital camera did in fact originate from that digital camera. Thus, if someone claims to have photographed E.T., we could at least say that the image hadn’t been digitally altered.

This would also be useful for protection against phishing. A image’s signature could include the website an image is supposed to be viewed from. Any scammer including a logo from the FBI in their email would raise flags in the recipients’ email client, which would compare the image’s source to the source encoded in the signature. If the FBI logo was intended to be served from www.fbi.gov, the email client could immediately warn the recipient that something funny is going on.

Yes, there would be ways around it but faking a legitimate image would be challenging. A scammer could always design his own, unsigned image or remove the signature through a screen capture. However, without the FBI’s cryptographic key being used to sign the image, the scammer could not fake the image’s signature as being from the FBI’s website.

It wouldn’t be a perfect solution to prevent fraud but it would be an important tool to prove a digital image’s validity.

Thunderbird 13 is buggy


I’ve been a fan of Mozilla Thunderbird for a while now but a recent upgrade to Thunderbird 13.0.1 has shaken that faith. Since I upgraded to this latest version, TB has been slow, the message preview pane has never correctly shown the email it supposedly is displaying, it never cleanly exits, it has unexplained CPU spikes, and overall it’s basically is slow as Christmas.

I Googled “‘thunderbird 13’ buggy” and came upon this post from a fellow Linux user who seems to have the same issues:

Florian Monfort
Jun 29, 2012 – Public
Question for all of you guys !

If there is any of you using Fedora 17, is Thunderbird 13 buggy ?

I have to end the process ALL THE TIME to close it, because after a few minutes it would just keep on “loading message” forever…

Sometimes also I have to wait for ages for my sending message to be copied to the “Sent” folder…. So I have to cancel…

Thing is I used to have Evolution but Evolution is no better …

Can someone help me ?

I’m considering downgrading to a prior TB version to fix things, because the current version frustrates me more than pleases me.

Apple cancels Rev. Horton Heat event

The band Reverend Horton Heat was invited to play at an Apple store but found the gig a bad fit, with Apple placing some unreasonable demands on the band. The band posted an update on their Facebook page today, explaining how the gig blew up. I found it to be an insightful look at these no-pay corporate gigs:

Reverend Horton Heat
In case you don’t know what happened with Apple….We were supposed to do an in-store appearance at their 1 Polk Street store (Market Street really) on the afternoon of the 14th of July. Of course, they wanted some kind of striped down or acoustic thing. I was working on figuring out what songs would work in that “retail” enviroment. It’s not easy to do a gig like that. It’s completly different than what we do. Of course, it was for publicity only – ie no pay. There was going to be a Q&A with the people in attendence. They wanted to record the thing and make it a podcast. All fine, except then, I found out that they wanted me to come up with an MC and figure the whole thing out – not exactly welcoming. It kind of seemed that they wanted us to play for free, set the whole thing up and get ourselves there too without doing too much to make the event a success. Getting ourselves there is hard because we have an upright bass. It would be impossible and expensive for us to bring the bus with trailer. Anyway, I made a post on facebook about how it wasn’t right to throw everything on the artist instead of doing they’re best to welcome us. That was bad and I’m a bad, bad man evidentally. They got on the phone to our agent and said that they didn’t like the post. Later that day, I took the facebook post down – maybe I shouldn’t have, but I did. Then, today, I hear that they canceled the event. They didn’t call me. I just heard. So, my preparation was for nothing. I think that anytime an artist is coming to your store (and they’re bringing their fans into your enviroment where you are trying to sell something), you should be especially appreciative. The Mom and Pop stores, now closed down forever, used to go out of their way to make us feel comfortable and wanted. Those days are gone forever…evidentally. Call the store if you can. Ask them why.