Ekdohibs/zig - zig - Final Minetest

Ekdohibs/zig

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Author	SHA1	Message	Date
Frank Denis	7f9e3e419c	Use @reduce	2020-11-07 20:30:13 +01:00
Frank Denis	bd07154242	Add mem.timingSafeEql() for constant-time array comparison This is a trivial implementation that just does a or[xor] loop. However, this pattern is used by virtually all crypto libraries and in practice, even without assembly barriers, LLVM never turns it into code with conditional jumps, even if one of the parameters is constant. This has been verified to still be the case with LLVM 11.0.0.	2020-11-07 20:18:43 +01:00

Author

SHA1

Message

Date

Frank Denis

7f9e3e419c

Use @reduce

2020-11-07 20:30:13 +01:00

Frank Denis

bd07154242

Add mem.timingSafeEql() for constant-time array comparison

This is a trivial implementation that just does a or[xor] loop.

However, this pattern is used by virtually all crypto libraries and
in practice, even without assembly barriers, LLVM never turns it into
code with conditional jumps, even if one of the parameters is constant.

This has been verified to still be the case with LLVM 11.0.0.

2020-11-07 20:18:43 +01:00

2 Commits