Chapter Summary
In this chapter, we discuss some indirect ways of attacking public-key cryptosystems. These attacks do not attempt to solve the underlying intractable problems, but watch the decryption device and/or use malicious key generation routines in order to gain information about private keys.
The timing attack works based on the availability of the total times of several private-key operations under the same private key. It successively keeps on guessing bits of the private key by performing some variance calculations.
The power attack requires the availability of the power consumption patterns (also called power traces) of the decrypting (or signing) device during one or more private-key operations. If the measurements are done with ...
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