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_NEON 57 tristate "SHA384 and SHA512 digest algorithm (ARM NEON)" 58 depends on KERNEL_MODE_NEON 59 select CRYPTO_SHA512 60 select CRYPTO_HASH 61 help 62 SHA-512 secure hash standard (DFIPS 180-2) implemented 63 using ARM NEON instructions, when available. 64 65 This version of SHA implements a 512 bit hash with 256 bits of 66 security against collision attacks. 67 68 This code also includes SHA-384, a 384 bit hash with 192 bits 69 of security against collision attacks. 70 71config CRYPTO_AES_ARM 72 tristate "AES cipher algorithms (ARM-asm)" 73 depends on ARM 74 select CRYPTO_ALGAPI 75 select CRYPTO_AES 76 help 77 Use optimized AES assembler routines for ARM platforms. 78 79 AES cipher algorithms (FIPS-197). AES uses the Rijndael 80 algorithm. 81 82 Rijndael appears to be consistently a very good performer in 83 both hardware and software across a wide range of computing 84 environments regardless of its use in feedback or non-feedback 85 modes. Its key setup time is excellent, and its key agility is 86 good. Rijndael's very low memory requirements make it very well 87 suited for restricted-space environments, in which it also 88 demonstrates excellent performance. Rijndael's operations are 89 among the easiest to defend against power and timing attacks. 90 91 The AES specifies three key sizes: 128, 192 and 256 bits 92 93 See <http://csrc.nist.gov/encryption/aes/> for more information. 94 95config CRYPTO_AES_ARM_BS 96 tristate "Bit sliced AES using NEON instructions" 97 depends on KERNEL_MODE_NEON 98 select CRYPTO_ALGAPI 99 select CRYPTO_AES_ARM 100 select CRYPTO_ABLK_HELPER 101 help 102 Use a faster and more secure NEON based implementation of AES in CBC, 103 CTR and XTS modes 104 105 Bit sliced AES gives around 45% speedup on Cortex-A15 for CTR mode 106 and for XTS mode encryption, CBC and XTS mode decryption speedup is 107 around 25%. (CBC encryption speed is not affected by this driver.) 108 This implementation does not rely on any lookup tables so it is 109 believed to be invulnerable to cache timing attacks. 110 111config CRYPTO_AES_ARM_CE 112 tristate "Accelerated AES using ARMv8 Crypto Extensions" 113 depends on KERNEL_MODE_NEON 114 select CRYPTO_ALGAPI 115 select CRYPTO_ABLK_HELPER 116 help 117 Use an implementation of AES in CBC, CTR and XTS modes that uses 118 ARMv8 Crypto Extensions 119 120config CRYPTO_GHASH_ARM_CE 121 tristate "PMULL-accelerated GHASH using ARMv8 Crypto Extensions" 122 depends on KERNEL_MODE_NEON 123 select CRYPTO_HASH 124 select CRYPTO_CRYPTD 125 help 126 Use an implementation of GHASH (used by the GCM AEAD chaining mode) 127 that uses the 64x64 to 128 bit polynomial multiplication (vmull.p64) 128 that is part of the ARMv8 Crypto Extensions 129 130endif 131