Implement cx_bn_gf2_n_mul on LNS #683
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Workaround that implements cx_bn_gf2_n_mul() in the LNS SDK until it is hopefully added as a syscall on LNS OS like all other Ledger devices Fixes LedgerHQ/nanos-secure-sdk#64
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Description
This PR is a workaround that implements
cx_bn_gf2_n_mul()in the SDK for LNS until it is hopefully added as a syscall like in all other Ledger devices.As the second Montgomery constant (
bn_h) is an unused attribute here it begs the question how is the second Montgomery constant (bn_h) used in the implementation ofcx_bn_gf2_n_mul()on Nano S Plus, Nano X and Stax devices?Changes include
Additional comments
The code in this PR is already included in the app-seed-tool which has passed Ledger's security review.