Side-Channel Attack
A side-channel attack is a type of security exploit that takes advantage
of indirect information leakage from a system to gain unauthorized access to
data. Instead of directly attacking the cryptographic algorithm, side-channel
attacks exploit the system's physical or behavioral characteristics.
Here are some common types of side-channel attacks:
Timing Attacks: These attacks measure the time it takes for a system to perform cryptographic operations. Variations in timing can reveal information about the cryptographic keys.
Power Analysis Attacks: By monitoring a device's power consumption during cryptographic operations, attackers can infer information about the keys
being used.
Electromagnetic Attacks: These involve capturing electromagnetic
emissions from a device to extract cryptographic keys or other sensitive
information.
Acoustic Cryptanalysis: This method uses sound emissions from a device,
such as the noise made by a computer’s processor, to gather information about
the cryptographic operations being performed.
Cache Attacks: These attacks exploit the behavior of a computer’s cache
memory to infer information about cryptographic keys.
Side-channel attacks are particularly challenging to defend against
because they exploit a system's physical implementation rather than
weaknesses in the cryptographic algorithms. Mitigating these attacks
often requires careful design and implementation of hardware and software to
minimize information leakage.
This is covered in Pentest+
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