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| author | Eric Biggers <ebiggers@google.com> | 2019-07-19 23:09:18 -0700 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2019-07-27 21:08:38 +1000 |
| commit | 8dfa20fcfbeb245642dfe3a43f8a3735d9aed42a (patch) | |
| tree | 887e9ffb1793ff6f754ab839a528a170177f219d /crypto/Kconfig | |
| parent | 065cf577135a4977931c7a1e1edf442bfd9773dd (diff) | |
| download | linux-8dfa20fcfbeb245642dfe3a43f8a3735d9aed42a.tar.bz2 | |
crypto: ghash - add comment and improve help text
To help avoid confusion, add a comment to ghash-generic.c which explains
the convention that the kernel's implementation of GHASH uses.
Also update the Kconfig help text and module descriptions to call GHASH
a "hash function" rather than a "message digest", since the latter
normally means a real cryptographic hash function, which GHASH is not.
Cc: Pascal Van Leeuwen <pvanleeuwen@verimatrix.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Pascal Van Leeuwen <pvanleeuwen@verimatrix.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/Kconfig')
| -rw-r--r-- | crypto/Kconfig | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/crypto/Kconfig b/crypto/Kconfig index 2e7f08ba0675..455a3354e291 100644 --- a/crypto/Kconfig +++ b/crypto/Kconfig @@ -647,11 +647,12 @@ config CRYPTO_VPMSUM_TESTER Unless you are testing these algorithms, you don't need this. config CRYPTO_GHASH - tristate "GHASH digest algorithm" + tristate "GHASH hash function" select CRYPTO_GF128MUL select CRYPTO_HASH help - GHASH is message digest algorithm for GCM (Galois/Counter Mode). + GHASH is the hash function used in GCM (Galois/Counter Mode). + It is not a general-purpose cryptographic hash function. config CRYPTO_POLY1305 tristate "Poly1305 authenticator algorithm" @@ -976,12 +977,12 @@ config CRYPTO_WP512 <http://www.larc.usp.br/~pbarreto/WhirlpoolPage.html> config CRYPTO_GHASH_CLMUL_NI_INTEL - tristate "GHASH digest algorithm (CLMUL-NI accelerated)" + tristate "GHASH hash function (CLMUL-NI accelerated)" depends on X86 && 64BIT select CRYPTO_CRYPTD help - GHASH is message digest algorithm for GCM (Galois/Counter Mode). - The implementation is accelerated by CLMUL-NI of Intel. + This is the x86_64 CLMUL-NI accelerated implementation of + GHASH, the hash function used in GCM (Galois/Counter mode). comment "Ciphers" |