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LLVM Adds Constant-Time Support for Protecting Cryptographic Code

LLVM Adds Constant-Time Support for Protecting Cryptographic Code

3 comments

·November 25, 2025
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amluto

Too bad that Intel chips more or less reserve the right to take LLVM’s nice output and make it non-constant-time anyway. See:

https://www.intel.com/content/www/us/en/developer/articles/t...

Sure, you could run on some hypothetical OS that supports DOITM and insert syscalls around every manipulation of secret data. Yeah, right.

JoshTriplett

This link seems broken. Some searching suggests that the title and slug may have changed, but I haven't found a working link to the article. Just from the title alone, I am extremely interested in reading more about this, because it's been largely mythical for a long time.

bangaladore

https://web.archive.org/web/20251125224147/https://blog.trai...