In cryptography, a side channel attack is any attack based on information gained from the physical
lementation of a cryptosystem, rather than brute force or theoretical weaknesses in the algorithms
(compare cryptanalysis). For example, timing information, power consumption, electromagneticleaks
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. Many powerful side channel attacks are based on statistical methods
pioneered by Paul Kocher.
lementation of a cryptosystem, rather than brute force or theoretical weaknesses in the algorithms
(compare cryptanalysis). For example, timing information, power consumption, electromagneticleaks
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. Many powerful side channel attacks are based on statistical methods
pioneered by Paul Kocher.
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