Timing Attacks on Implementations
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Computer Science Clay
Active In SP

Posts: 712
Joined: Jan 2009
25-02-2009, 03:08 PM

Timing Attacks on Implementations

By carefully measuring the amount of time required to perform private key operations, attackers may be able to find fixed Diffie-Hellman exponents, factor RSA keys, and break other cryptosystems.Against a vulnerable system, the attack is computationally inexpensive and often requires only known ciphertext. Actual systems are potentially at risk, including cryptographic tokens, network-based cryptosystems, and other applications where attackers can make reasonably accurate timing measurements.

Techniques for preventing the attack for RSA and Diffie-Hellman are presented. Some cryptosystems will need to be re-vised to protect against the attack, and new protocols and algorithms may need to incorporate measures to prevent timing attacks. Keywords: timing attack, cryptanalysis, RSA, Diffie-Hellman, DSS Cryptosystems often take slightly different amounts of time to process different inputs. Reasons include performance optimizations to bypass unnecessary operations, branching and conditional statements, RAM cache hits, processor in-structions (such as multiplication and division) that run in non-fixed time, and a wide variety of other causes. Performance characteristics typically depend on both the encryption key and the input data (e.g., plaintext or ciphertext). While it is known that timing channels can leak data or keys across a controlled perime-ter, intuition might suggest that unintentional timing characteristics would only reveal a small amount of information from a cryptosystem (such as the Hamming weight of the key). However, attacks are presented which can exploit timing measurements from vulnerable systems to find the entire secret key.Diffe-Hellman and RSA private-key operations consist of computing R = yx mod n, where n is public and y can be found by an eavesdropper. The at-tacker's goal is to find x, the secret key.

For the attack, the victim must com-pute yx mod n for several values of y, where y, n, and the computation time are known to the attacker. (If a new secret exponent x is chosen for each operation, the attack does not work.) The necessary information and timing measurements might be obtained by passively eavesdropping on an interactive protocol, since an attacker could record the messages received by the target and measure the amount of time taken to respond to each y. The attack assumes that the attacker knows the design of the target system, although in practice this could probably be inferred from timing information.
Use Search at http://topicideas.net/search.php wisely To Get Information About Project Topic and Seminar ideas with report/source code along pdf and ppt presenaion

Important Note..!

If you are not satisfied with above reply ,..Please


So that we will collect data for you and will made reply to the request....OR try below "QUICK REPLY" box to add a reply to this page
Tagged Pages: cache timing attacks on aes,
Popular Searches: blackhole attacks, quote timing attacks on implementations of diffie hellman rsa dss and other systems, in terms of technology independent implementations, recent implementations in electronics and communication, line disconnect timing atack, timing attack against, an investigation of customization in erp system implementations,

Quick Reply
Type your reply to this message here.

Image Verification
Please enter the text contained within the image into the text box below it. This process is used to prevent automated spam bots.
Image Verification
(case insensitive)

Possibly Related Threads...
Thread Author Replies Views Last Post
  The Feasibility of Launching and Detecting Jamming Attacks in Wireless Networks pdf seminar projects maker 0 422 26-09-2013, 12:59 PM
Last Post: seminar projects maker
  Footprint: Detecting Sybil Attacks in Urban Vehicular Networks pdf study tips 0 283 18-07-2013, 03:55 PM
Last Post: study tips
  Read Write Timing Diagram pdf study tips 0 344 06-04-2013, 03:36 PM
Last Post: study tips
  DefendingWireless Infrastructure Against the Challenge of DDoS Attacks pdf study tips 0 385 05-03-2013, 03:11 PM
Last Post: study tips
  DENIAL OF SERVICE ATTACKS ppt seminar tips 0 315 12-02-2013, 03:16 PM
Last Post: seminar tips
  Denial of Service Attacks in Wireless Networks: The Case of Jammers pdf study tips 0 306 09-02-2013, 12:11 PM
Last Post: study tips
  Footprint: Detecting Sybil Attacks in Urban Vehicular Networks pdf project girl 0 579 23-01-2013, 10:19 AM
Last Post: project girl
  Detecting and Localizing Wireless Spoofing Attacks Report Abstract project girl 0 390 29-12-2012, 03:19 PM
Last Post: project girl
  Mitigating selective forwarding attacks with a channel-aware Approach full report seminar tips 0 356 22-12-2012, 03:13 PM
Last Post: seminar tips
  Ethical Hacking and Cyber Attacks seminar tips 0 388 13-12-2012, 06:00 PM
Last Post: seminar tips