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It's a fault attack. It doesn't really matter what implementation you use; the attack is an interaction between the hardware (flipping bits in targeted memory at specific points in computation) and the algorithm itself.

You care about these kinds of attacks if you build or rely on a device that uses ECDSA for security and is in the physical custody of adversaries. It's not an attack that is especially relevant for client/server software or cloud cryptography (there are less theatrical ways your cloud provider can destroy your security).




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