crypto: gcm - Use GHASH digest algorithm
Remove the dedicated GHASH implementation in GCM, and uses the GHASH
digest algorithm instead. This will make GCM uses hardware accelerated
GHASH implementation automatically if available.
ahash instead of shash interface is used, because some hardware
accelerated GHASH implementation needs asynchronous interface.
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 0ae170e..5105cf1 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -157,7 +157,7 @@
tristate "GCM/GMAC support"
select CRYPTO_CTR
select CRYPTO_AEAD
- select CRYPTO_GF128MUL
+ select CRYPTO_GHASH
help
Support for Galois/Counter Mode (GCM) and Galois Message
Authentication Code (GMAC). Required for IPSec.