11 August, 2005

Court case falls apart because of MD5 insecurities

According to a post on the cryptography mailing list, an Australian court threw out a case against an (allegedly) speeding motorist because the speed camera images were secured using MD5. The defence argued that MD5 was a "discredited piece of technology". Indeed, the MD5 hash function was shown to have a weakness last August when a team of Chinese researchers announced that there was a practical method to generate collisions.

But it's not totally clear what's going on here. One possibility is that the speed cameras digitally sign the evidence, or more specifically, the MD5 hash of the evidence. To tamper with the evidence, you'd need to mount a second preimage attack, but, as far as I'm aware, nobody's come up with a way of doing this.

Another possibility is that the camera simply prepends the evidence with the MD5 hash, which provides no integrity guarantees, but that's got nothing to do with the security of MD5 per se.

Still, there's a great quote from the defence lawyer Denis Mirabilis: "People have shown it [the algorithm] has been hacked and it's open to viruses."

Update: Slashdot have just covered this.

Tags: ,

14 Comments:

Blogger Dirk said...

This comment has been removed by a blog administrator.

5:49 am  
Blogger Matt Crypto said...

I got 11 spam messages since last night, all on this post. What the?

10:12 am  
Blogger Dirk said...

Happy days are coming for criminals! In this new age of digital multimedia, one can tamper with any image. Does that mean we can trow all evidences overboard, unless they were encrypted with solid encryption? What if they mob your store, and the camera recorded digitally? "Oh no Mr Judge, thats not my face on the video, the data is tampered with"!!!

11:32 am  
Blogger One J said...

discount oakley sunglasses
www.louisvuitton.com
michael kors
red christian louboutin
true religion outlet
prada uk
louis vuitton outlet
coach outlet
kids lebron james shoes
louis vuitton outlet
christian louboutin sale
coach factory outlet
coach outlet
michael kors outlet
retro 9
michael kors outlet
cheap jordans
oakley sunglasses
ray ban sunglasses outlet
abercrombie & fitch
ray ban sunglasses
juicy couture outlet
michael kors outlet online
20150525yuanyuan

9:36 am  
Blogger Lin Shijun said...

shijun 6.27
coach outlet
jordan shoes
michael kors
coach outlet online
oakley sunglass
kate spade purses
michael kors outlet
new jordans
jordan 4 retro
white timberland boots
hollister
louis vuitton handbags
coach factory outlet
tod's outlet
ralph lauren outlet online
christian louboutin shoes
louis vuitton handbags
nfl jerseys
celine luggage tote
pandora rings
wholesale nfl jerseys
tods sale
insanity dvd sale
cheap chanel handbags
louis vuitton outlet
coach factory outlet online
ray ban wayfarer
michael kors outlet
christian louboutin sale
jordan shoes
ray ban aviators
toms.com
louis vuitton handbags
lululemon outlet
soccer jerseys
marc jacobs
jordan 11 columbia
dior outlet store
polo ralph lauren
michael kors handbags

2:22 am  
Blogger ninest123 said...

ninest123 16.01
louis vuitton outlet, ralph lauren outlet, louis vuitton outlet online, uggs on sale, tiffany jewelry, nike outlet, cheap jordans, louboutin shoes, louis vuitton outlet, cheap oakley sunglasses, louis vuitton, michael kors outlet, michael kors outlet online, uggs on sale, michael kors, ralph lauren polo, gucci handbags, michael kors outlet online, uggs on sale, oakley sunglasses, oakley sunglasses, longchamp outlet, burberry outlet, oakley sunglasses, prada handbags, ray ban sunglasses, replica watches, nike air max, nike air max, ray ban sunglasses, longchamp bags, nike free, christian louboutin, uggs outlet, christian louboutin, tiffany jewelry, michael kors outlet online, louboutin uk, michael kors handbags, tory burch outlet, burberry factory outlet, prada outlet, replica watches, ray ban sunglasses, uggs outlet, oakley sunglasses, longchamp outlet, louis vuitton handbags

4:40 am  
Blogger ninest123 said...

nike free pas cher, nike air max, new balance, nike tn pas cher, vans pas cher, michael kors uk, nike trainers uk, true religion outlet, michael kors, hollister uk, jordan pas cher, lunette oakley pas cher, vanessa bruno pas cher, coach outlet store online, nike free, longchamp pas cher, lunette ray ban pas cher, hogan sito ufficiale, converse, nike roshe run pas cher, nike air max uk, sac guess pas cher, ray ban uk, north face uk, longchamp soldes, coach purses, burberry pas cher, nike blazer pas cher, lululemon outlet, true religion outlet, mulberry uk, nike roshe uk, louboutin pas cher, polo ralph lauren uk, michael kors, ralph lauren pas cher, nike air max pas cher, north face pas cher, timberland pas cher, abercrombie and fitch, true religion outlet, nike air max uk, polo lacoste pas cher, michael kors outlet online, nike air force, true religion jeans, abercrombie and fitch UK, hermes pas cher, replica handbags

4:43 am  
Blogger ninest123 said...

s6 cases, iphone 6 cases, iphone cases, hollister clothing, hollister, nfl jerseys, soccer shoes, iphone 6s plus cases, vans outlet, insanity workout, lululemon outlet, iphone 6s cases, softball bats, nike roshe run, salvatore ferragamo, converse, north face outlet, babyliss pro, instyler ionic styler, new balance shoes, mcm handbags, north face outlet, asics running shoes, hermes handbags, polo ralph lauren, iphone 6 plus cases, nike air max, nike air max, wedding dresses, valentino shoes, abercrombie and fitch, p90x workout, giuseppe zanotti, herve leger, bottega veneta, timberland boots, vans scarpe, ghd hair, ipad cases, mac cosmetics, jimmy choo outlet, celine handbags, louboutin, iphone 5s cases, oakley, soccer jerseys, gucci, reebok outlet, beats by dre, ray ban, mont blanc, chi flat iron

4:45 am  
Blogger ninest123 said...

canada goose jackets, converse shoes outlet, ugg,uggs,uggs canada, canada goose jackets, ugg,ugg australia,ugg italia, moncler, montre pas cher, canada goose, canada goose uk, supra shoes, wedding dresses uk, replica watches, moncler pas cher, louis vuitton, canada goose outlet, ugg pas cher, moncler, moncler jackets, marc jacobs, pandora charms, pandora jewelry, doke & gabbana, pandora jewelry, barbour, louis vuitton uk, louis vuitton, toms shoes, juicy couture outlet, swarovski jewelry, canada goose, moncler outlet, thomas sabo uk, juicy couture outlet, moncler uk, moncler, hollister, ugg uk, coach outlet, barbour jackets uk, canada goose pas cher, canada goose outlet, sac louis vuitton, bottes ugg pas cher, links of london uk, karen millen uk, swarovski uk, pandora uk, moncler, lancel, sac louis vuitton
ninest123 16.01

4:47 am  
Blogger dong dong23 said...

louis vuitton outlet
gucci outlet
michael kors uk
michael kors outlet clearance
michael kors outlet
oakley outlet
beats headphones
ray ban sunglasses discount
nike sb
louis vuitton outlet stores
supra sneakers
louis vuitton outlet
oakley vault
ralph lauren outlet
coach factorty outlet
oakley sunglasses
adidas originals
michael kors outlet
kevin durant shoes 8
cheap nfl jerseys
coach outlet
nike roshe runs
cheap oakley sunglasses
cheap jordans
kate spade handbags
coach outlet
ray ban sunglasses
ray ban sunglasses
michael kors handbags
coach outlet
cheap nfl jerseys
toms shoes
caoch outlet
christian louboutin shoes
ray ban sunglasses
louis vuitton outlet
ralph lauren polo
replica watches
nike air max
louis vuitton handbags
20164.16wengdongdong

3:17 am  
Blogger Ana Esraa said...

http://www.prokr.net/2016/09/saudi-arabia-cleaning-companies-6.html
http://www.prokr.net/2016/09/saudi-arabia-cleaning-companies-5.html
http://www.prokr.net/2016/09/saudi-arabia-cleaning-companies-3.html
http://www.prokr.net/2016/09/saudi-arabia-cleaning-companies-2.html
http://www.prokr.net/2016/09/saudi-arabia-cleaning-companies.html
http://www.prokr.net/2016/09/saudi-arabia-cleaning-companies-4.html

6:50 am  
Blogger Ana soo said...

https://decor-ksa.com/
https://3kary.com/property-status/building-for-sale/
https://3kary.com/property-status/building-for-rent/
https://3kary.com/property-type/buildings/


10:43 am  
Blogger Mie Helal said...

Many thanks for providing this info
http://www.prokr.net/2016/09/spraying-companies-12.html
http://www.prokr.net/2016/09/spraying-companies-11.html
http://www.prokr.net/2016/09/spraying-companies-10.html
http://www.prokr.net/2016/09/spraying-companies-9.html

7:12 pm  
Blogger rehab gad2 said...


Very nice post. I definitely appreciate this site. Stick with it!
http://www.kuwait.prokr.net/
http://www.emirates.prokr.net/

5:54 pm  

Post a Comment

<< Home