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• W2950457953 abstract "Interference between processes executing on shared hardware can be used to mount performance-degradation attacks. However, in most cases, such attacks offer little benefit for the adversary. In this paper, we show that performance-degradation attacks can be used to amplify side-channel leaks, enabling the adversary to increase both the amount and the quality of information captured. We describe a new microarchitectural performancedegradation attack that can slow victims down by a factor of over 150. We identify a new information leak in the OpenSSL implementation of the ECDSA digital signature algorithm. We show how to use the performance-degradation attack to amplify a side-channel enough to enable exploiting the new information leak. Using the combined attack, an adversary can break a private key of the secp256k1 curve, used in the Bitcoin protocol, after observing only 6 signatures. This result is over four times better than any previously described attack." @default.
• W2950457953 created "2019-06-27" @default.
• W2950457953 creator A5006949757 @default.
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• W2950457953 date "2015-01-01" @default.
• W2950457953 modified "2023-09-24" @default.
• W2950457953 title "Amplifying Side Channels Through Performance Degradation." @default.
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• W2950457953 hasPublicationYear "2015" @default.
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