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Diffstat (limited to 'arch/arm/crypto/Kconfig')
| -rw-r--r-- | arch/arm/crypto/Kconfig | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/arch/arm/crypto/Kconfig b/arch/arm/crypto/Kconfig new file mode 100644 index 000000000..f884b8b2f --- /dev/null +++ b/arch/arm/crypto/Kconfig @@ -0,0 +1,63 @@ +# SPDX-License-Identifier: GPL-2.0 + +menu "Accelerated Cryptographic Algorithms for CPU (arm)" + +config CRYPTO_GHASH_ARM_CE + tristate "AEAD cipher: AES in GCM mode (ARMv8 Crypto Extensions)" + depends on KERNEL_MODE_NEON + select CRYPTO_AEAD + select CRYPTO_LIB_AES + select CRYPTO_LIB_GF128MUL + help + AEAD cipher: AES-GCM + + Architecture: arm using + - ARMv8 Crypto Extensions + +config CRYPTO_AES_ARM_BS + tristate "Ciphers: AES, modes: ECB/CBC/CTR/XTS (bit-sliced NEON)" + depends on KERNEL_MODE_NEON + select CRYPTO_SKCIPHER + select CRYPTO_LIB_AES + help + Length-preserving ciphers: AES cipher algorithms (FIPS-197) + with block cipher modes: + - ECB (Electronic Codebook) mode (NIST SP800-38A) + - CBC (Cipher Block Chaining) mode (NIST SP800-38A) + - CTR (Counter) mode (NIST SP800-38A) + - XTS (XOR Encrypt XOR with ciphertext stealing) mode (NIST SP800-38E + and IEEE 1619) + + 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.) + + The bit sliced AES code does not use lookup tables, so it is believed + to be invulnerable to cache timing attacks. However, since the bit + sliced AES code cannot process single blocks efficiently, in certain + cases table-based code with some countermeasures against cache timing + attacks will still be used as a fallback method; specifically CBC + encryption (not CBC decryption), the encryption of XTS tweaks, XTS + ciphertext stealing when the message isn't a multiple of 16 bytes, and + CTR when invoked in a context in which NEON instructions are unusable. + +config CRYPTO_AES_ARM_CE + tristate "Ciphers: AES, modes: ECB/CBC/CTS/CTR/XTS (ARMv8 Crypto Extensions)" + depends on KERNEL_MODE_NEON + select CRYPTO_SKCIPHER + select CRYPTO_LIB_AES + help + Length-preserving ciphers: AES cipher algorithms (FIPS-197) + with block cipher modes: + - ECB (Electronic Codebook) mode (NIST SP800-38A) + - CBC (Cipher Block Chaining) mode (NIST SP800-38A) + - CTR (Counter) mode (NIST SP800-38A) + - CTS (Cipher Text Stealing) mode (NIST SP800-38A) + - XTS (XOR Encrypt XOR with ciphertext stealing) mode (NIST SP800-38E + and IEEE 1619) + + Architecture: arm using: + - ARMv8 Crypto Extensions + +endmenu + |