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@xxxxxxxxxx> --- 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 -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
