Lurk Report HERE

Fyron · #1 May 10th, 2003, 05:27 AM

How do you sign bytes? I wasn't aware that there was a way to sign electronic data.

David E. Gervais · #2 May 11th, 2003, 01:43 AM

Fyron, Digital signatures have been around for a long time,..

Here is a blatant example of a digital signature using my name..

In this example I used the RGB method of imbedding my name, the size of my name is 5 pixels and the colors of the pixels is defined by the ascii value of the letters in my name..

David Gervais
RGBRGBRGBRGBRGB

Hex example: R44 G97 B118 R105 G68 B00 R47 G65 B72 R76 G61 B69 R71 G00 B00

Decimal example: R068 G097 B118 R105 G068 B000 R071 G101 B114 R118 G097 B105 R115 G000 B000

You can also do variations of the digital signature, by just using the 'R', 'G', or 'B' values (which would make your digital signature in shades of Red green or blue.)

In my tiny example, the more 'visible' sig has each pixel greatly enlarged in size. the Last 5 pixels in the bottom right of this small gif are the sig in actual size. as you can see, it's hard to make out visually when there is something bigger to draw your attention away from the sig. even if that something is just a bigger Version of the sig in an avatar frame.

Cheers!

[ May 10, 2003, 12:50: Message edited by: David E. Gervais ]

Kamog · #3 May 11th, 2003, 01:27 AM

Wow, I guess you can embed a lot of information into a small picture!

mlmbd · #4 May 16th, 2003, 08:05 PM

No Lurk Report, today! Do to lack of interest. Mine!

Have a good one!

sorry, Taz.

mlmbd

Taz-in-Space · #5 May 17th, 2003, 04:22 AM

...today is Lurk Day! And TAZ is HERE!!!

Whaaattt? Nobody here?
No Lurk Report??

"mlmbd?"
"MLMBD!"
"MLMBD!!"

...anybody?...

...*sigh*...

David E. Gervais · #6 May 17th, 2003, 12:20 PM

Seeing Taz react to there being no lurk report is definately a kodak moment. So, I took my avatar cam and captured the moment,..

1053166511.gif

"What? grrrr, no Lurk Report again, Grrrrrr."

Be carefull mlmbd, it's not usually a good idea to raise Taz's blood pressure

Cheers!

Ed Kolis · #7 May 18th, 2003, 01:06 AM

Quote:

Originally posted by David E. Gervais:
Fyron, Digital signatures have been around for a long time,..

Here is a blatant example of a digital signature using my name..

(snip)

How would that be useful to sign anything? The only way you can verify it is if you know how it is produced, and if you know that, what's to stop you from producing counterfeits? e.g. I start making images with the "David Gervais" RGB code in the corner!

I suppose it might work the first time - "Hah! That's not mine! All the other ones have those five pixels in the corner!" - but then after that you'd have to change your signature on all existing images and a simple fc oldimage.bmp newimage.bmp would easily root out the differences...