1996 | OriginalPaper | Buchkapitel
Timing Attacks on Implementations of Diffie-Hellman, RSA, DSS, and Other Systems
verfasst von : Paul C. Kocher
Erschienen in: Advances in Cryptology — CRYPTO ’96
Verlag: Springer Berlin Heidelberg
Enthalten in: Professional Book Archive
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By carefully measuring the amount of time required to perform private key operations, attackers may be able to find fixed Diffie-Hellman exponents, factor RSA keys, and break other cryptosystems. Against a vulnerable system, the attack is computationally inexpensive and often requires only known ciphertext. Actual systems are potentially at risk, including cryptographic tokens, network-based cryptosystems, and other applications where attackers can make reasonably accurate timing measurements. Techniques for preventing the attack for RSA and Diffie-Hellman are presented. Some cryptosystems will need to be revised to protect against the attack, and new protocols and algorithms may need to incorporate measures to prevent timing attacks.