On Tue, Jul 17, 2018 at 4:12 PM, Eric Biggers <ebiggers3@xxxxxxxxx> wrote: > I just don't see why ahash algorithms would need such a huge maximum digest > size. Don't the 'ahash' algorithms all have 'shash' equivalents too? Is there > actually any hash algorithm, either shash or ahash, in the Linux kernel that has > a digest size greater than 64 bytes (512 bits)? Note that for a real > cryptographic hash there isn't really any need for a digest size larger than > that, since that already gives you 256-bit collision resistance; that's why > SHA-2 and SHA-3 max out at that size. Yup, it certainly looks that way on investigation. I'll adjust both ahash and shash to use the same #define. -Kees -- Kees Cook Pixel Security
