linux/arch/arm64
Jason A. Donenfeld c8cfcb78c6 crypto: arm64/chacha - correctly walk through blocks
Prior, passing in chunks of 2, 3, or 4, followed by any additional
chunks would result in the chacha state counter getting out of sync,
resulting in incorrect encryption/decryption, which is a pretty nasty
crypto vuln: "why do images look weird on webpages?" WireGuard users
never experienced this prior, because we have always, out of tree, used
a different crypto library, until the recent Frankenzinc addition. This
commit fixes the issue by advancing the pointers and state counter by
the actual size processed. It also fixes up a bug in the (optional,
costly) stride test that prevented it from running on arm64.

Fixes: b3aad5bad2 ("crypto: arm64/chacha - expose arm64 ChaCha routine as library function")
Reported-and-tested-by: Emil Renner Berthing <kernel@esmil.dk>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: stable@vger.kernel.org # v5.5+
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-03-20 14:35:27 +11:00
..
boot Merge mainline/master into arm/fixes 2019-12-05 13:18:54 -08:00
configs arm64: defconfig: re-run savedefconfig 2019-12-05 13:20:17 -08:00
crypto crypto: arm64/chacha - correctly walk through blocks 2020-03-20 14:35:27 +11:00
include arm64 updates for 5.5: 2019-12-06 14:18:01 -08:00
kernel arm64 updates for 5.5: 2019-12-06 14:18:01 -08:00
kvm arm64 updates for 5.5: 2019-12-06 14:18:01 -08:00
lib arm64: uaccess: Remove uaccess_*_not_uao asm macros 2019-11-20 18:51:54 +00:00
mm arm64 updates for 5.5: 2019-12-06 14:18:01 -08:00
net arm64: bpf: optimize modulo operation 2019-09-03 15:44:40 +02:00
xen xen/efi: have a common runtime setup function 2019-10-02 10:31:07 -04:00
Kbuild arm64: add arch/arm64/Kbuild 2019-08-21 18:47:15 +01:00
Kconfig dma-mapping updates for 5.5-rc1 2019-11-28 11:16:43 -08:00
Kconfig.debug treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Kconfig.platforms i.MX SoC update for 5.5: 2019-11-06 07:46:42 -08:00
Makefile arm64: implement ftrace with regs 2019-11-06 14:17:35 +00:00