Network World

research center:

Security

Search / DocFinder:
Advanced search
Research Centers
Vendor Solutions
Site Resources
Special Issues

Signature SeriesEnterprise All-Stars
Enterprise All-Stars NEW

You in action
You in action

New Data Center The New Data Center: Wireless & Mobility
Wireless & Mobility NEW

The New Data Center: Server Virtualization
Server Virtualization

DES (Data Encryption Standard)

Standard, developed in the 1970s, to encrypt data using a private key algorithm. Vulnerable to brute-force attacks because of the relatively small, 56-bit size of its key (in 1999, a DES-encrypted message was cracked in just 22 hours using a distributed network of 100,000 PCs).

As a practical matter, anyone today who wants high security uses a more powerful version of DES called Triple-DES.

To start encrypting with Triple-DES, two 56-bit keys are selected. Data is encrypted via DES three times, the first time by the first key, the second time by the second key and the third time by the first key once more. This process creates an encrypted datastream that is unbreakable with today's code-breaking techniques and available computing power, while being compatible with DES.

The National Institutes of Standards and Technology considers DES an obsolute technology suitable only for legacy applications and today supports a new standard called Advanced Encryption Standard.

Additional resources

Topic: Security
Breaking news and analysis from Network World Fusion.

Comments:

DES
by rellf

ok,
not as good as competition
try to use IP-1
its easier to use
if that doesnt work use E BIT-SELECTION TABLE

see ya



Add a comment

NOTE: Comments are reviewed by an editor before being posted.

Your rating of this resource (with 5 the best)
1 2 3 4 5

Subject:

Your user name (what other users will see on the review):

Your real name (for our records only):

Your e-mail (ditto):

Your comments (Use a blank line to separate paragraphs):

TOP  STORIES | MOST DUGG STORIES

  1. 10 ways the Chinese Internet is different
  2. Hacker writes rootkit for Cisco's routers
  3. Verizon snares $678 million federal network deal
  4. Cisco loses $2 million order to Nortel
  5. HP buys EDS for $13.9 billion
  6. What EDS is telling its people about HP deal
  7. Which IT security skills are most important?
  8. Worst of the lot: PCConnection and PCMall
  9. Philly's Wi-Fi net to be shut down
  10. Clock is ticking on .me domain names

  11. QUOTES OF THE WEEK:
    Notable quotes from the week

    MOST-DOWNLOADED PODCAST:
    How open-source SugarCRM is competing with the big boys

Newsletters
Sign up for one of NWW's Network Security newsletters.

Security in Practice
Virus and Bug Patch Alert
Security Strategies
Security News Alert
VPNs
Messaging
View all newsletters

Email Address:

Vendor Solutions

White Papers

Auditing and Recovery for Active Directory: What's New in Windows Server 2008
- NetPro

Fill the Gaps in Your Disaster Recovery Plan with Single Object Recovery for Active Directory
- NetPro

Steps for a Successful Exchange Migration
- NetPro

More...

Special Report

Taking Virtualization Up a Notch - Citrix
Virtualization benefits are well known, but as virtualization creeps into every corner of your data center there are new issues that must be addressed. Get the most up-to-date information on virtualization concerns and threats and how to address each in this informative Executive Guide.


Research Centers: Applications | Application Development | Applications-Standards | Applications Vendor Solutions | Collaboration | CRM / ERP | Databases | Directories | Grid Computing | Java | Messaging | .Net | RFID | SOAP | Web Services | XML | Convergence & VoIP | Convergence Regulatory | Convergence Services | Convergence Standards | Convergence VoIP Vendor Solutions | Video | IP PBX | SIP | VoIP | VoIP Services | E-Business | DNS | RFID | Supply Chain | Web security LANs & Routers | Acceleration | Gigabit Ethernet | Lans-Standards | Routers | Wireless LANs | Network Management | Application Management | Desktop Management | Management Test Patch Management | Operating Systems | Linux | NetWare | Unix | Windows Outsourcing | Managed Services | Offshoring Security | Firewalls - VPN - Intrusion | Identity management | Patch Management | Microsoft Security | Privacy | Security Standards | Spam & Phishing | Viruses & worms | Web Security | Wireless Security | Servers & Desktop | Backup-Recovery | DataCenter | Desktops | Desktop Management | Grid | Servers | Server Blades | Servers Desktops | Utility Computing | Small & Medium Business | Broadband | Telework | Handhelds & PDAs | Home Networking | Security | Storage | Compliance | Infiniband | Network-Attached Storage | SANs | Storage Management | Storage Virtualization | Virtualization | Vendor News | Bankruptcy | Earnings | Lawsuits | Layoffs | Standards | Start Ups | Vendor Markets | Education | Financial | Healthcare | HIPAA | Manufacturing | Retail | Wide Area Network | Broadband | Carriers | Frame Relay | Metro Ethernet | MPLS | Service providers | Wireless services | Wireless & Mobile | Wireless LANs | PDAs & handhelds | Wireless Security | Wireless Services | Wireless Standards | Wireless Switches | All Company Profiles