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What is Ladderleak ECDSA about?
The paper introduces LadderLeak, a new class of vulnerabilities in ECDSA implementations, particularly affecting the Montgomery ladder used for scalar multiplication. It demonstrates that even less than one bit of nonce leakage can lead to successful key recovery attacks, significantly improving upon previous methods that required more nonce bias. The authors provide experimental validation of their attacks on various ECDSA implementations, including those in OpenSSL, and propose theoretical advancements in
- Author
- 32Nguyễn Minh Quang
- Language
- EN