Side Channel attack

What is Side Channel Attacks do?

In cryptography, a side-channel attack is any attack based on information gained from the physical implementation of a cryptosystem, rather than brute force or theoretical weaknesses in the algorithms (compare cryptanalysis). For example, timing information, power consumption, electromagnetic leaks or even sound can provide an extra source of information, which can be exploited to break the system. Some side-channel attacks require technical knowledge of the internal operation of the system on which the cryptography is implemented, although others such as differential power analysis are effective as black-box attacks.

How does side-channel analysis work?

All attacks take advantage of the changes in processing behavior that will be exhibited at different times during algorithm execution. There are two broad classes of side-channel analysis: simple and differential. Within those classes, attackers can use a range of side-channel properties, such as heat generated, the power consumed, or execution time. For embedded systems where the attacker has access to the hardware, heat, and power represent the most important sources of leaks, although timing-based attacks are likely to become more on multitasking and multiprocessor systems where the attacker is able to load their own code or use interactions between existing applications to track behavior.

Comments

Post a Comment

Popular posts from this blog

Phishing

Image
Phishing on Course web at SLIIT What Is Phishing?                   Phishing is the attempt to obtain sensitive information such as usernames, passwords and credit card details , often for malicious reasons, by disgusting as a trustworthy entity in electronic communication. What is spear phishing attack ?                   S pear phishing  is an email that appears to be from an individual or business that you know. But it isn't. It's from the same criminal hackers who want your credit card and bank account numbers, passwords, and the financial information on your PC. Introduction ?         First you need know some details about how it will be work. Phishing attack can be done creating web pages like original web sites. Attacker create similar site like original one and host that site in the server and send that link to the target person or group. If they trust that link and enter their information to that fake webpage. In that page store what they ente
Read more

CySCA 2014 Web Penetration Testing Write-up

Image
Hellow Peeps !!! Today I bring some interesting hacking challenge walkthrough. Let's see what it is, CySCA2014 Web Penetration Testing Write-up We need to first setup the cysca2014 box in VM. When the VM configuring we can check connectivity is their using ping commands. Web Penetration Testing 1 – Club Status Turn on the intercept in the burp suit and go to the web site using cysca2014 IP address. Then you can see the GET request. There are two cookies called PHPSESSID and VIP. Then we have to edit the VIP cookie value from 0 to 1 and forward the request. Then we need to forward this packet in burp suite. Then we can get a website. Index.php Now we cannot access the blog. Now we need to change VIP 0 to 1 then we can access the blog.   Now we can access Blog. Web Penetration Testing 2 – Om nom nom nom After completing challenge 1, you can browse on the Blog page. There is
Read more

Double Submit Cookies Patterns

Image
Cross-Site Request Forgery (CSRF)  Cross-Site Request Forgery (CSRF) is a type of attack that occurs when a malicious web site, email, blog, instant message, or program causes a user’s web browser to perform an unwanted action on a trusted site for which the user is currently authenticated. The impact of a successful CSRF attack is limited to the capabilities exposed by the vulnerable application. For example, this attack could result in a transfer of funds, changing a password, or purchasing an item in the user's context. In effect, CSRF attacks are used by an attacker to make a target system perform a function via the target's browser without knowledge of the target user, at least until the unauthorized transaction has been committed. Impacts of successful CSRF exploits vary greatly based on the privileges of each victim. When targeting a normal user, a successful CSRF attack can compromise end-user data and their associated functions. If the targeted end user is an
Read more