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Commit 652ccae5 authored by Ard Biesheuvel's avatar Ard Biesheuvel Committed by Herbert Xu
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crypto: arm - move ARM specific Kconfig definitions to a dedicated file 



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: default avatarArd Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 1eb8a1b3

arch/arm/Kconfig

+3 −0
Original line number Diff line number Diff line
@@ -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"

arch/arm/crypto/Kconfig

0 → 100644
+85 −0
Original line number Diff line number Diff line 


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

crypto/Kconfig

+0 −75
Original line number Diff line number Diff line
@@ -572,26 +572,6 @@ 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
@@ -691,21 +671,6 @@ 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
@@ -868,46 +833,6 @@ 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_AES_PPC_SPE

	tristate "AES cipher algorithms (PPC SPE)"

	depends on PPC && SPE