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authorArd Biesheuvel <ard.biesheuvel@linaro.org>2019-07-02 21:41:22 +0200
committerHerbert Xu <herbert@gondor.apana.org.au>2019-07-26 14:55:33 +1000
commite59c1c98745637796df824c0177f279b6e9cad94 (patch)
tree7cd4e284c1634defc73581c5ac879cb17bb2c907 /crypto/Kconfig
parentb158fcbba857c71ffb05ab254aff3b32b5e3cfc3 (diff)
crypto: aes - create AES library based on the fixed time AES code
Take the existing small footprint and mostly time invariant C code and turn it into a AES library that can be used for non-performance critical, casual use of AES, and as a fallback for, e.g., SIMD code that needs a secondary path that can be taken in contexts where the SIMD unit is off limits (e.g., in hard interrupts taken from kernel context) Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/Kconfig')
-rw-r--r--crypto/Kconfig4
1 files changed, 4 insertions, 0 deletions
diff --git a/crypto/Kconfig b/crypto/Kconfig
index e801450bcb1c..091ebbbc9655 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1066,6 +1066,9 @@ config CRYPTO_GHASH_CLMUL_NI_INTEL
comment "Ciphers"
+config CRYPTO_LIB_AES
+ tristate
+
config CRYPTO_AES
tristate "AES cipher algorithms"
select CRYPTO_ALGAPI
@@ -1089,6 +1092,7 @@ config CRYPTO_AES
config CRYPTO_AES_TI
tristate "Fixed time AES cipher"
select CRYPTO_ALGAPI
+ select CRYPTO_LIB_AES
help
This is a generic implementation of AES that attempts to eliminate
data dependent latencies as much as possible without affecting