1 2menuconfig ARM_CRYPTO 3 bool "ARM Accelerated Cryptographic Algorithms" 4 depends on ARM 5 help 6 Say Y here to choose from a selection of cryptographic algorithms 7 implemented using ARM specific CPU features or instructions. 8 9if ARM_CRYPTO 10 11config CRYPTO_SHA1_ARM 12 tristate "SHA1 digest algorithm (ARM-asm)" 13 select CRYPTO_SHA1 14 select CRYPTO_HASH 15 help 16 SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2) implemented 17 using optimized ARM assembler. 18 19config CRYPTO_SHA1_ARM_NEON 20 tristate "SHA1 digest algorithm (ARM NEON)" 21 depends on KERNEL_MODE_NEON 22 select CRYPTO_SHA1_ARM 23 select CRYPTO_SHA1 24 select CRYPTO_HASH 25 help 26 SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2) implemented 27 using optimized ARM NEON assembly, when NEON instructions are 28 available. 29 30config CRYPTO_SHA1_ARM_CE 31 tristate "SHA1 digest algorithm (ARM v8 Crypto Extensions)" 32 depends on KERNEL_MODE_NEON 33 select CRYPTO_SHA1_ARM 34 select CRYPTO_HASH 35 help 36 SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2) implemented 37 using special ARMv8 Crypto Extensions. 38 39config CRYPTO_SHA2_ARM_CE 40 tristate "SHA-224/256 digest algorithm (ARM v8 Crypto Extensions)" 41 depends on KERNEL_MODE_NEON 42 select CRYPTO_SHA256_ARM 43 select CRYPTO_HASH 44 help 45 SHA-256 secure hash standard (DFIPS 180-2) implemented 46 using special ARMv8 Crypto Extensions. 47 48config CRYPTO_SHA256_ARM 49 tristate "SHA-224/256 digest algorithm (ARM-asm and NEON)" 50 select CRYPTO_HASH 51 depends on !CPU_V7M 52 help 53 SHA-256 secure hash standard (DFIPS 180-2) implemented 54 using optimized ARM assembler and NEON, when available. 55 56config CRYPTO_SHA512_ARM 57 tristate "SHA-384/512 digest algorithm (ARM-asm and NEON)" 58 select CRYPTO_HASH 59 depends on !CPU_V7M 60 help 61 SHA-512 secure hash standard (DFIPS 180-2) implemented 62 using optimized ARM assembler and NEON, when available. 63 64config CRYPTO_AES_ARM 65 tristate "AES cipher algorithms (ARM-asm)" 66 depends on ARM 67 select CRYPTO_ALGAPI 68 select CRYPTO_AES 69 help 70 Use optimized AES assembler routines for ARM platforms. 71 72 AES cipher algorithms (FIPS-197). AES uses the Rijndael 73 algorithm. 74 75 Rijndael appears to be consistently a very good performer in 76 both hardware and software across a wide range of computing 77 environments regardless of its use in feedback or non-feedback 78 modes. Its key setup time is excellent, and its key agility is 79 good. Rijndael's very low memory requirements make it very well 80 suited for restricted-space environments, in which it also 81 demonstrates excellent performance. Rijndael's operations are 82 among the easiest to defend against power and timing attacks. 83 84 The AES specifies three key sizes: 128, 192 and 256 bits 85 86 See <http://csrc.nist.gov/encryption/aes/> for more information. 87 88config CRYPTO_AES_ARM_BS 89 tristate "Bit sliced AES using NEON instructions" 90 depends on KERNEL_MODE_NEON 91 select CRYPTO_ALGAPI 92 select CRYPTO_AES_ARM 93 select CRYPTO_ABLK_HELPER 94 help 95 Use a faster and more secure NEON based implementation of AES in CBC, 96 CTR and XTS modes 97 98 Bit sliced AES gives around 45% speedup on Cortex-A15 for CTR mode 99 and for XTS mode encryption, CBC and XTS mode decryption speedup is 100 around 25%. (CBC encryption speed is not affected by this driver.) 101 This implementation does not rely on any lookup tables so it is 102 believed to be invulnerable to cache timing attacks. 103 104config CRYPTO_AES_ARM_CE 105 tristate "Accelerated AES using ARMv8 Crypto Extensions" 106 depends on KERNEL_MODE_NEON 107 select CRYPTO_ALGAPI 108 select CRYPTO_ABLK_HELPER 109 help 110 Use an implementation of AES in CBC, CTR and XTS modes that uses 111 ARMv8 Crypto Extensions 112 113config CRYPTO_GHASH_ARM_CE 114 tristate "PMULL-accelerated GHASH using ARMv8 Crypto Extensions" 115 depends on KERNEL_MODE_NEON 116 select CRYPTO_HASH 117 select CRYPTO_CRYPTD 118 help 119 Use an implementation of GHASH (used by the GCM AEAD chaining mode) 120 that uses the 64x64 to 128 bit polynomial multiplication (vmull.p64) 121 that is part of the ARMv8 Crypto Extensions 122 123endif 124