Trail of Bits @trailofbits@infosec.exchange
Public

LLVM will soon protect cryptographic code from timing attacks at the compiler level. The compiler translates __builtin_ct_select across multiple architectures (x86-64, i386, ARM, AArch64) to appropriate constant-time implementations using native instructions, such as cmov or CSEL, where available, or masked arithmetic patterns elsewhere. blog.trailofbits.com/2025/12/0

Introducing constant-time support for LLVM to protect cryptographic code

Trail of Bits developed constant-time coding support for LLVM that prevents compilers from breaking cryptographic implementations vulnerable to timing attacks, introducing the __builtin_ct_select family of intrinsics that preserve constant-time properties throughout compilation.

blog.trailofbits.com · The Trail of Bits Blog

0
0
0

If you have a fediverse account, you can quote this note from your own instance. Search https://infosec.exchange/users/trailofbits/statuses/115650035166947007 on your instance and quote it. (Note that quoting is not supported in Mastodon.)