[CRYPTO] gcm: New algorithm

Add GCM/GMAC support to cryptoapi.

GCM (Galois/Counter Mode) is an AEAD mode of operations for any block cipher
with a block size of 16.  The typical example is AES-GCM.

Signed-off-by: Mikko Herranen <mh1@iki.fi>
Reviewed-by: Mika Kukkonen <mika.kukkonen@nsn.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 9 insertions, 0 deletions

diff --git a/crypto/Kconfig b/crypto/Kconfig
index 8d6cac97021f..40ae92caa4f6 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -206,6 +206,15 @@ config CRYPTO_CTR
           CTR: Counter mode
           This block cipher algorithm is required for IPSec.
 
+config CRYPTO_GCM
+        tristate "GCM/GMAC support"
+        select CRYPTO_CTR
+        select CRYPTO_AEAD
+        select CRYPTO_GF128MUL
+        help
+          Support for Galois/Counter Mode (GCM) and Galois Message
+          Authentication Code (GMAC). Required for IPSec.
+
 config CRYPTO_CRYPTD
         tristate "Software async crypto daemon"
         select CRYPTO_ABLKCIPHER