tree 93af99b119c89b80c0f637700a9fc6e6c829f9a3
parent ea545a62547faa4c249fe796d897ff30c1207d59
author Tom Sepez <tsepez@chromium.org> 1573079101 +0000
committer Chromium commit bot <commit-bot@chromium.org> 1573079101 +0000

Fix 64-bit arithmetic in sha2 variants.

SHA-256 has a 8 byte length field, and was being calculated
correctly but clumsily. SHA-384 and SHA-512 have 16 byte length
fields, which were not being calculated properly anyways for
inputs over half a GB (because 32-N bit shifts were used where
64-N bit shifts were required). Simplify by limiting the length
of the input we support to 2^64 bits for any of these, which
ought to be enough for anyone.

- Rename some macros for consistency and reorder.

Change-Id: I492d0d574177239519ee38c9cbbc2a9beab6967c
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/61933
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Tom Sepez <tsepez@chromium.org>