[PATCH] s390: aes support

[linux-2.6-omap-h63xx.git] / crypto / Kconfig

diff --git a/crypto/Kconfig b/crypto/Kconfig
index 9fdab742b10f57ef0ed5b9d9f76377cc888b5b33..c696f7ab729edf96cc691082eaaafb283c3365b2 100644 (file)
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -215,6 +215,26 @@ config CRYPTO_AES_X86_64
 
          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