Commit 91d68933 authored by David Sterba's avatar David Sterba Committed by Herbert Xu

crypto: blake2b - add blake2b generic implementation

The patch brings support of several BLAKE2 variants (2b with various
digest lengths).  The keyed digest is supported, using tfm->setkey call.
The in-tree user will be btrfs (for checksumming), we're going to use
the BLAKE2b-256 variant.

The code is reference implementation taken from the official sources and
modified in terms of kernel coding style (whitespace, comments, uintXX_t
-> uXX types, removed unused prototypes and #ifdefs, removed testing
code, changed secure_zero_memory -> memzero_explicit, used own helpers
for unaligned reads/writes and rotations).

Further changes removed sanity checks of key length or output size,
these values are verified in the crypto API callbacks or hardcoded in
shash_alg and not exposed to users.
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 17513547
...@@ -639,6 +639,23 @@ config CRYPTO_XXHASH ...@@ -639,6 +639,23 @@ config CRYPTO_XXHASH
xxHash non-cryptographic hash algorithm. Extremely fast, working at xxHash non-cryptographic hash algorithm. Extremely fast, working at
speeds close to RAM limits. speeds close to RAM limits.
config CRYPTO_BLAKE2B
tristate "BLAKE2b digest algorithm"
select CRYPTO_HASH
help
Implementation of cryptographic hash function BLAKE2b (or just BLAKE2),
optimized for 64bit platforms and can produce digests of any size
between 1 to 64. The keyed hash is also implemented.
This module provides the following algorithms:
- blake2b-160
- blake2b-256
- blake2b-384
- blake2b-512
See https://blake2.net for further information.
config CRYPTO_CRCT10DIF config CRYPTO_CRCT10DIF
tristate "CRCT10DIF algorithm" tristate "CRCT10DIF algorithm"
select CRYPTO_HASH select CRYPTO_HASH
......
...@@ -74,6 +74,7 @@ obj-$(CONFIG_CRYPTO_STREEBOG) += streebog_generic.o ...@@ -74,6 +74,7 @@ obj-$(CONFIG_CRYPTO_STREEBOG) += streebog_generic.o
obj-$(CONFIG_CRYPTO_WP512) += wp512.o obj-$(CONFIG_CRYPTO_WP512) += wp512.o
CFLAGS_wp512.o := $(call cc-option,-fno-schedule-insns) # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79149 CFLAGS_wp512.o := $(call cc-option,-fno-schedule-insns) # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79149
obj-$(CONFIG_CRYPTO_TGR192) += tgr192.o obj-$(CONFIG_CRYPTO_TGR192) += tgr192.o
obj-$(CONFIG_CRYPTO_BLAKE2B) += blake2b_generic.o
obj-$(CONFIG_CRYPTO_GF128MUL) += gf128mul.o obj-$(CONFIG_CRYPTO_GF128MUL) += gf128mul.o
obj-$(CONFIG_CRYPTO_ECB) += ecb.o obj-$(CONFIG_CRYPTO_ECB) += ecb.o
obj-$(CONFIG_CRYPTO_CBC) += cbc.o obj-$(CONFIG_CRYPTO_CBC) += cbc.o
......
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