xboxscene.org forums

Author Topic: Sha-1 Encryption Cracked  (Read 92 times)

Kthulu

  • Archived User
  • Hero Member
  • *
  • Posts: 787
Sha-1 Encryption Cracked
« on: January 20, 2007, 06:30:00 PM »
Is this new development help in any way the hacking of 360 or xbox1?

http://it.slashdot.org/article.pl?sid=07/0...57&from=rss
Logged

Havok

  • Archived User
  • Hero Member
  • *
  • Posts: 1105
Sha-1 Encryption Cracked
« Reply #1 on: January 20, 2007, 08:12:00 PM »
In early 2005, Wang and her research team announced that they had succeeded in cracking SHA-1. In addition to the U.S. government, well known companies like Microsoft, Sun, Atmel, and others have also announced that they will no longer be using SHA-1.

Two years ago, Wang convened an international data encryption conference to announce that her team had successfully cracked the four world-class standards of data encryption algorithms of MD5, HAVAL-1 28, MD4 and RIPEMD within 10 years.

So technically... old news... has your life changed any??
Logged

Hopeful

  • Archived User
  • Sr. Member
  • *
  • Posts: 365
Sha-1 Encryption Cracked
« Reply #2 on: January 20, 2007, 08:46:00 PM »
QUOTE(Havok @ Jan 21 2007, 03:43 AM) *

In early 2005, Wang and her research team announced that they had succeeded in cracking SHA-1. In addition to the U.S. government, well known companies like Microsoft, Sun, Atmel, and others have also announced that they will no longer be using SHA-1.

Two years ago, Wang convened an international data encryption conference to announce that her team had successfully cracked the four world-class standards of data encryption algorithms of MD5, HAVAL-1 28, MD4 and RIPEMD within 10 years.

So technically... old news... has your life changed any??

What data encryption algorithm does the 360 use?
Logged

vax11780

  • Archived User
  • Newbie
  • *
  • Posts: 45
Sha-1 Encryption Cracked
« Reply #3 on: January 20, 2007, 09:19:00 PM »
From Bruce Schneier's blog dated 18-Feb-2005:

QUOTE

In 1999, a group of cryptographers built a DES cracker. It was able to perform 2^56 DES operations in 56 hours. The machine cost $250K to build, although duplicates could be made in the $50K-$75K range. Extrapolating that machine using Moore's Law, a similar machine built today could perform 260 calculations in 56 hours, and 2^69 calculations in three and a quarter years. Or, a machine that cost $25M-$38M could do 2^69 calculations in the same 56 hours.


So, for $250K we can develop a machine which would allow us to sign ONE executable every three years. For another $50K-$75K we could build a second machine and sign two executables every three years.

No, this doesn't help.

VAX

http://www.schneier.com/blog/archives/2005...analysis_o.html
Logged