1 files changed, 16 insertions, 0 deletions

diff --git a/crypto/Kconfig b/crypto/Kconfig
index 69ce573f1224..71f337aefa39 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -776,6 +776,22 @@ config CRYPTO_AES_ARM
 
           See <http://csrc.nist.gov/encryption/aes/> for more information.
 
+config CRYPTO_AES_ARM_BS
+        tristate "Bit sliced AES using NEON instructions"
+        depends on ARM && KERNEL_MODE_NEON
+        select CRYPTO_ALGAPI
+        select CRYPTO_AES_ARM
+        select CRYPTO_ABLK_HELPER
+        help
+          Use a faster and more secure NEON based implementation of AES in CBC,
+          CTR and XTS modes
+
+          Bit sliced AES gives around 45% speedup on Cortex-A15 for CTR mode
+          and for XTS mode encryption, CBC and XTS mode decryption speedup is
+          around 25%. (CBC encryption speed is not affected by this driver.)
+          This implementation does not rely on any lookup tables so it is
+          believed to be invulnerable to cache timing attacks.
+
 config CRYPTO_ANUBIS
         tristate "Anubis cipher algorithm"
         select CRYPTO_ALGAPI