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_SHA1_ARM_CE tristate "SHA1 digest algorithm (ARM v8 Crypto Extensions)" depends on KERNEL_MODE_NEON select CRYPTO_SHA1_ARM select CRYPTO_HASH help SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2) implemented using special ARMv8 Crypto Extensions. config CRYPTO_SHA2_ARM_CE tristate "SHA-224/256 digest algorithm (ARM v8 Crypto Extensions)" depends on KERNEL_MODE_NEON select CRYPTO_SHA256_ARM select CRYPTO_HASH help SHA-256 secure hash standard (DFIPS 180-2) implemented using special ARMv8 Crypto Extensions. config CRYPTO_SHA256_ARM tristate "SHA-224/256 digest algorithm (ARM-asm and NEON)" select CRYPTO_HASH depends on !CPU_V7M help SHA-256 secure hash standard (DFIPS 180-2) implemented using optimized ARM assembler and NEON, when available. config CRYPTO_SHA512_ARM tristate "SHA-384/512 digest algorithm (ARM-asm and NEON)" select CRYPTO_HASH depends on !CPU_V7M help SHA-512 secure hash standard (DFIPS 180-2) implemented using optimized ARM assembler and NEON, when available. 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 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. config CRYPTO_AES_ARM_CE tristate "Accelerated AES using ARMv8 Crypto Extensions" depends on KERNEL_MODE_NEON select CRYPTO_ALGAPI select CRYPTO_ABLK_HELPER help Use an implementation of AES in CBC, CTR and XTS modes that uses ARMv8 Crypto Extensions config CRYPTO_GHASH_ARM_CE tristate "PMULL-accelerated GHASH using ARMv8 Crypto Extensions" depends on KERNEL_MODE_NEON select CRYPTO_HASH select CRYPTO_CRYPTD help Use an implementation of GHASH (used by the GCM AEAD chaining mode) that uses the 64x64 to 128 bit polynomial multiplication (vmull.p64) that is part of the ARMv8 Crypto Extensions endif