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by bascule
4202 days ago
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Rust has an asm! macro. You can implement the constant time operations in assembly. Here's a syntax extension that tries to use black magic to turn a subset of Rust code into corresponding asm! macros: https://github.com/klutzy/nadeko/blob/tmp/tests/rot13.rs Note it presently has no support for loops whatsoever. |
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Could you comment on why? Is it perhaps necessary to save/restore ECX [edit: I meant RCX for 64bit] between procedure/function calls/rets?