What are the countermeasures against side channel attacks?

What are the countermeasures against side channel attacks?

Because side-channel attacks rely on the relationship between information emitted (leaked) through a side channel and the secret data, countermeasures fall into two main categories: (1) eliminate or reduce the release of such information and (2) eliminate the relationship between the leaked information and the secret …

Which of the following method is used as countermeasure for timing attack?

Two types of countermeasures can be applied against timing attacks. The first one consists in eliminating timing variations whereas the second renders these variations useless for an attacker. The only absolute way to prevent timing attacks is to make the computation strictly constant time, independent of the input.

What is side channel leakage?

Definition(s): An attack enabled by leakage of information from a physical cryptosystem. Characteristics that could be exploited in a side-channel attack include timing, power consumption, and electromagnetic and acoustic emissions.

Which of the following is an example of a side-channel attack?

Cache timing attack is an example of a side-channel attack, which do not attack the cipher itself but analyze the effects of implementation of the cipher on a particular system.

Which attack uses side channel analysis?

Such measurements can be used to infer cryptographic keys using techniques equivalent to those in power analysis or can be used in non-cryptographic attacks, e.g. TEMPEST (aka van Eck phreaking or radiation monitoring) attacks.

What is a covert channel attack?

In computer security, a covert channel is a type of attack that creates a capability to transfer information objects between processes that are not supposed to be allowed to communicate by the computer security policy.

What’s the best way to counter a side channel attack?

The most comprehensive method to employ this countermeasure is to create a Secure Development Lifecycle for hardware, which includes utilizing all available security analysis platforms at their respective stages of the hardware development lifecycle.

How are side channel attacks and countermeasures for identity?

In Section 2, the summarization of SM9 algorithm and its implementation are introduced. We give the basic idea of SPA on SM9 in detail and put forward some countermeasures in Section 3. Then, in Section 4, a template attack is provided to attack the protected SM9 which can resist SPA and the corresponding countermeasures are also given.

Which is an example of a side channel fault attack?

Software-initiated fault attacks — Currently a rare class of side-channels, Row hammer is an example in which off-limits memory can be changed by accessing adjacent memory too often (causing state retention loss).

Are there any side channel attacks on the web?

The rise of Web 2.0 applications and software-as-a-service has also significantly raised the possibility of side-channel attacks on the web, even when transmissions between a web browser and server are encrypted (e.g., through HTTPS or WiFi encryption), according to researchers from Microsoft Research and Indiana University.

What are the four types of side channel attacks?

Types of side-channel attacks

• Electromagnetic. An attacker measures the electromagnetic radiation, or radio waves, given off by a target device to reconstruct the internal signals of that device.
• Acoustic. The attacker measures the sounds produced by a device.
• Power.
• Optical.
• Timing.
• Memory cache.
• Hardware weaknesses.

How side channel attacks work?

A side channel attack breaks cryptography by using information leaked by cryptography, such as monitoring the electromagnetic field (EMF) radiation emitted by a computer screen to view information before it’s encrypted in a van Eck phreaking attack, aka Transient Electromagnetic Pulse Emanation STandard (TEMPEST).

Is timing attack a side-channel attack?

In cryptography, a timing attack is a side-channel attack in which the attacker attempts to compromise a cryptosystem by analyzing the time taken to execute cryptographic algorithms. Timing attacks can be applied to any algorithm that has data-dependent timing variation.

What are cache attacks?

Cache attack — attacks based on attacker’s ability to monitor cache accesses made by the victim in a shared physical system as in virtualized environment or a type of cloud service.

Which attacks uses side channel analysis to obtain the secret key?

SC attacks are the physical attacks that use the physical process to extract the secret information of the cryptographic algorithms such as encryption key.

Are Side Channel Attacks passive or active?

Both of these examples are passive side channels. Another option for side channel attacks is an active side channel exploit. An example from crypto history would be to try to get the enemy to encrypt a known message with their system. Generally, passive attacks are attacks that only observe the side-channel output.

What can make a buffer overflow a security problem?

A buffer overflow (or buffer overrun) occurs when the volume of data exceeds the storage capacity of the memory buffer. As a result, the program attempting to write the data to the buffer overwrites adjacent memory locations.

What are the two main types of covert channels?

There are two different types of covert channels, covert timing channels and covert storage channels. In a covert timing channel a process will relay information by modulating the use of system resources based on different timing.

What is the purpose of a covert channel?

A covert channel is any communication channel that can be exploited by a process to transfer information in a manner that violates the systems security policy. In short, covert channels transfer information using non-standard methods against the system design.

What is the purpose of a side channel attack?

When performing a side-channel attack, some observable behaviour of the (cryptographic) routine implementation is used to obtain additional information that allows the attacker to decode some cipher text, calculate the cryptographic keys or obtain details of the executed instructions and data within the system.

Are there any side channel attacks in smart grid?

Except for smart metering, where e.g. by the German BSI the usage of secure processors is enforced ( BSI, 2014 ), field devices in the smart grid usually come with little security functionality. Therefore, side-channel attacks might be considered less relevant compared to the simple attack methods presented above.

How are side channels used in cryptographic algorithms?

In this chapter, we focus on different side-channel attack modalities in hardware implementations of cryptographic algorithms. Chapter 16, on the other hand, covers side-channels in a processor micro-architecture, which can be controlled by a software, and are visible through it.

What does a side channel mean in computing?

In computing, a side channel is any communication channel that is incidental to another communication channel.