[PATCH] s390: aes support
Add support for the hardware accelerated AES crypto algorithm.
Signed-off-by: Jan Glauber <jan.glauber@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 9fdab74..c696f7a 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -215,6 +215,26 @@
See <http://csrc.nist.gov/encryption/aes/> for more information.
+config CRYPTO_AES_S390
+ tristate "AES cipher algorithms (s390)"
+ depends on CRYPTO && ARCH_S390
+ help
+ This is the s390 hardware accelerated implementation of the
+ AES cipher algorithms (FIPS-197). AES uses the Rijndael
+ algorithm.
+
+ Rijndael appears to be consistently a very good performer in
+ both hardware and software across a wide range of computing
+ environments regardless of its use in feedback or non-feedback
+ modes. Its key setup time is excellent, and its key agility is
+ good. Rijndael's very low memory requirements make it very well
+ suited for restricted-space environments, in which it also
+ demonstrates excellent performance. Rijndael's operations are
+ among the easiest to defend against power and timing attacks.
+
+ On s390 the System z9-109 currently only supports the key size
+ of 128 bit.
+
config CRYPTO_CAST5
tristate "CAST5 (CAST-128) cipher algorithm"
depends on CRYPTO