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6b9ae8cfaa
Instead of exposing the powerpc-optimized SHA-1 code via powerpc-specific crypto_shash algorithms, instead just implement the sha1_blocks() library function. This is much simpler, it makes the SHA-1 library functions be powerpc-optimized, and it fixes the longstanding issue where the powerpc-optimized SHA-1 code was disabled by default. SHA-1 still remains available through crypto_shash, but individual architectures no longer need to handle it. Note: to see the diff from arch/powerpc/crypto/sha1-spe-glue.c to lib/crypto/powerpc/sha1.h, view this commit with 'git show -M10'. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250712232329.818226-11-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org>
86 lines
2.5 KiB
Text
86 lines
2.5 KiB
Text
# SPDX-License-Identifier: GPL-2.0
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menu "Accelerated Cryptographic Algorithms for CPU (powerpc)"
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config CRYPTO_CURVE25519_PPC64
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tristate
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depends on PPC64 && CPU_LITTLE_ENDIAN
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select CRYPTO_KPP
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select CRYPTO_LIB_CURVE25519_GENERIC
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select CRYPTO_ARCH_HAVE_LIB_CURVE25519
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default CRYPTO_LIB_CURVE25519_INTERNAL
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help
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Curve25519 algorithm
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Architecture: PowerPC64
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- Little-endian
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config CRYPTO_MD5_PPC
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tristate "Digests: MD5"
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select CRYPTO_HASH
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help
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MD5 message digest algorithm (RFC1321)
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Architecture: powerpc
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config CRYPTO_AES_PPC_SPE
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tristate "Ciphers: AES, modes: ECB/CBC/CTR/XTS (SPE)"
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depends on SPE
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select CRYPTO_SKCIPHER
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help
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Block ciphers: AES cipher algorithms (FIPS-197)
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Length-preserving ciphers: AES with ECB, CBC, CTR, and XTS modes
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Architecture: powerpc using:
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- SPE (Signal Processing Engine) extensions
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SPE is available for:
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- Processor Type: Freescale 8500
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- CPU selection: e500 (8540)
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This module should only be used for low power (router) devices
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without hardware AES acceleration (e.g. caam crypto). It reduces the
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size of the AES tables from 16KB to 8KB + 256 bytes and mitigates
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timining attacks. Nevertheless it might be not as secure as other
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architecture specific assembler implementations that work on 1KB
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tables or 256 bytes S-boxes.
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config CRYPTO_AES_GCM_P10
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tristate "Stitched AES/GCM acceleration support on P10 or later CPU (PPC)"
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depends on PPC64 && CPU_LITTLE_ENDIAN && VSX
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select CRYPTO_LIB_AES
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select CRYPTO_ALGAPI
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select CRYPTO_AEAD
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select CRYPTO_SKCIPHER
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select CRYPTO_SIMD
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help
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AEAD cipher: AES cipher algorithms (FIPS-197)
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GCM (Galois/Counter Mode) authenticated encryption mode (NIST SP800-38D)
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Architecture: powerpc64 using:
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- little-endian
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- Power10 or later features
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Support for cryptographic acceleration instructions on Power10 or
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later CPU. This module supports stitched acceleration for AES/GCM.
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config CRYPTO_DEV_VMX
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bool "Support for VMX cryptographic acceleration instructions"
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depends on PPC64 && VSX
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help
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Support for VMX cryptographic acceleration instructions.
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config CRYPTO_DEV_VMX_ENCRYPT
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tristate "Encryption acceleration support on P8 CPU"
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depends on CRYPTO_DEV_VMX
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select CRYPTO_AES
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select CRYPTO_CBC
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select CRYPTO_CTR
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select CRYPTO_GHASH
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select CRYPTO_XTS
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default m
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help
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Support for VMX cryptographic acceleration instructions on Power8 CPU.
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This module supports acceleration for AES and GHASH in hardware. If you
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choose 'M' here, this module will be called vmx-crypto.
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endmenu
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