[PATCH 1/4] crypto/arm: move ARM specific Kconfig definitions to a dedicated file
Ard Biesheuvel
ard.biesheuvel at linaro.org
Mon Mar 9 03:22:19 PDT 2015
This moves all Kconfig symbols defined in crypto/Kconfig that depend
on CONFIG_ARM to a dedicated Kconfig file in arch/arm/crypto, which is
where the code that implements those features resides as well.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel at linaro.org>
---
arch/arm/Kconfig | 3 ++
arch/arm/crypto/Kconfig | 85 +++++++++++++++++++++++++++++++++++++++++++++++++
crypto/Kconfig | 75 -------------------------------------------
3 files changed, 88 insertions(+), 75 deletions(-)
create mode 100644 arch/arm/crypto/Kconfig
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 9f1f09a2bc9b..e60da5ab8aec 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -2167,6 +2167,9 @@ source "arch/arm/Kconfig.debug"
source "security/Kconfig"
source "crypto/Kconfig"
+if CRYPTO
+source "arch/arm/crypto/Kconfig"
+endif
source "lib/Kconfig"
diff --git a/arch/arm/crypto/Kconfig b/arch/arm/crypto/Kconfig
new file mode 100644
index 000000000000..66fe82857e99
--- /dev/null
+++ b/arch/arm/crypto/Kconfig
@@ -0,0 +1,85 @@
+
+menuconfig ARM_CRYPTO
+ bool "ARM Accelerated Cryptographic Algorithms"
+ depends on ARM
+ help
+ Say Y here to choose from a selection of cryptographic algorithms
+ implemented using ARM specific CPU features or instructions.
+
+if ARM_CRYPTO
+
+config CRYPTO_SHA1_ARM
+ tristate "SHA1 digest algorithm (ARM-asm)"
+ select CRYPTO_SHA1
+ select CRYPTO_HASH
+ help
+ SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2) implemented
+ using optimized ARM assembler.
+
+config CRYPTO_SHA1_ARM_NEON
+ tristate "SHA1 digest algorithm (ARM NEON)"
+ depends on KERNEL_MODE_NEON
+ select CRYPTO_SHA1_ARM
+ select CRYPTO_SHA1
+ select CRYPTO_HASH
+ help
+ SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2) implemented
+ using optimized ARM NEON assembly, when NEON instructions are
+ available.
+
+config CRYPTO_SHA512_ARM_NEON
+ tristate "SHA384 and SHA512 digest algorithm (ARM NEON)"
+ depends on KERNEL_MODE_NEON
+ select CRYPTO_SHA512
+ select CRYPTO_HASH
+ help
+ SHA-512 secure hash standard (DFIPS 180-2) implemented
+ using ARM NEON instructions, when available.
+
+ This version of SHA implements a 512 bit hash with 256 bits of
+ security against collision attacks.
+
+ This code also includes SHA-384, a 384 bit hash with 192 bits
+ of security against collision attacks.
+
+config CRYPTO_AES_ARM
+ tristate "AES cipher algorithms (ARM-asm)"
+ depends on ARM
+ select CRYPTO_ALGAPI
+ select CRYPTO_AES
+ help
+ Use optimized AES assembler routines for ARM platforms.
+
+ 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.
+
+ The AES specifies three key sizes: 128, 192 and 256 bits
+
+ See <http://csrc.nist.gov/encryption/aes/> for more information.
+
+config CRYPTO_AES_ARM_BS
+ tristate "Bit sliced AES using NEON instructions"
+ depends on 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.
+
+endif
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 50f4da44a304..c50900b467c8 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -555,26 +555,6 @@ config CRYPTO_SHA1_SPARC64
SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2) implemented
using sparc64 crypto instructions, when available.
-config CRYPTO_SHA1_ARM
- tristate "SHA1 digest algorithm (ARM-asm)"
- depends on ARM
- select CRYPTO_SHA1
- select CRYPTO_HASH
- help
- SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2) implemented
- using optimized ARM assembler.
-
-config CRYPTO_SHA1_ARM_NEON
- tristate "SHA1 digest algorithm (ARM NEON)"
- depends on ARM && KERNEL_MODE_NEON
- select CRYPTO_SHA1_ARM
- select CRYPTO_SHA1
- select CRYPTO_HASH
- help
- SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2) implemented
- using optimized ARM NEON assembly, when NEON instructions are
- available.
-
config CRYPTO_SHA1_PPC
tristate "SHA1 digest algorithm (powerpc)"
depends on PPC
@@ -640,21 +620,6 @@ config CRYPTO_SHA512_SPARC64
SHA-512 secure hash standard (DFIPS 180-2) implemented
using sparc64 crypto instructions, when available.
-config CRYPTO_SHA512_ARM_NEON
- tristate "SHA384 and SHA512 digest algorithm (ARM NEON)"
- depends on ARM && KERNEL_MODE_NEON
- select CRYPTO_SHA512
- select CRYPTO_HASH
- help
- SHA-512 secure hash standard (DFIPS 180-2) implemented
- using ARM NEON instructions, when available.
-
- This version of SHA implements a 512 bit hash with 256 bits of
- security against collision attacks.
-
- This code also includes SHA-384, a 384 bit hash with 192 bits
- of security against collision attacks.
-
config CRYPTO_TGR192
tristate "Tiger digest algorithms"
select CRYPTO_HASH
@@ -817,46 +782,6 @@ config CRYPTO_AES_SPARC64
for some popular block cipher mode is supported too, including
ECB and CBC.
-config CRYPTO_AES_ARM
- tristate "AES cipher algorithms (ARM-asm)"
- depends on ARM
- select CRYPTO_ALGAPI
- select CRYPTO_AES
- help
- Use optimized AES assembler routines for ARM platforms.
-
- 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.
-
- The AES specifies three key sizes: 128, 192 and 256 bits
-
- 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
--
1.8.3.2
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