[Cryptech-Commits] [user/shatov/ecdsa_fpga_model] branch fix created (now e718fdf)
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Mon Feb 26 10:14:24 UTC 2018
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meisterpaul1 at yandex.ru pushed a change to branch fix
in repository user/shatov/ecdsa_fpga_model.
at e718fdf This commit fixes a theoretical bug in the base point multiplier model. The model does multiplication using the double-and-add algorithm. When adding two points P and Q on curves P-256 and P-384, four special cases must be considered. One of them is P = Q, in that situation the explicit addition formulae don't work and either 2*P or 2*Q must be returned from the addition routine. In this model Q is always the base point G, so when P = G, then 2*G must be returned. Since [...]
This branch includes the following new commits:
new e718fdf This commit fixes a theoretical bug in the base point multiplier model. The model does multiplication using the double-and-add algorithm. When adding two points P and Q on curves P-256 and P-384, four special cases must be considered. One of them is P = Q, in that situation the explicit addition formulae don't work and either 2*P or 2*Q must be returned from the addition routine. In this model Q is always the base point G, so when P = G, then 2*G must be returned. Since [...]
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