| # SPDX-License-Identifier: GPL-2.0 | |
| menu "Accelerated Cryptographic Algorithms for CPU (powerpc)" | |
| config CRYPTO_AES_PPC_SPE | |
| tristate "Ciphers: AES, modes: ECB/CBC/CTR/XTS (SPE)" | |
| depends on SPE | |
| select CRYPTO_LIB_AES | |
| select CRYPTO_SKCIPHER | |
| help | |
| Length-preserving ciphers: AES with ECB, CBC, CTR, and XTS modes | |
| Architecture: powerpc using: | |
| - SPE (Signal Processing Engine) extensions | |
| SPE is available for: | |
| - Processor Type: Freescale 8500 | |
| - CPU selection: e500 (8540) | |
| This module should only be used for low power (router) devices | |
| without hardware AES acceleration (e.g. caam crypto). It reduces the | |
| size of the AES tables from 16KB to 8KB + 256 bytes and mitigates | |
| timining attacks. Nevertheless it might be not as secure as other | |
| architecture specific assembler implementations that work on 1KB | |
| tables or 256 bytes S-boxes. | |
| config CRYPTO_AES_GCM_P10 | |
| tristate "Stitched AES/GCM acceleration support on P10 or later CPU (PPC)" | |
| depends on PPC64 && CPU_LITTLE_ENDIAN && VSX | |
| select CRYPTO_LIB_AES | |
| select CRYPTO_ALGAPI | |
| select CRYPTO_AEAD | |
| select CRYPTO_SKCIPHER | |
| select CRYPTO_SIMD | |
| help | |
| AEAD cipher: AES cipher algorithms (FIPS-197) | |
| GCM (Galois/Counter Mode) authenticated encryption mode (NIST SP800-38D) | |
| Architecture: powerpc64 using: | |
| - little-endian | |
| - Power10 or later features | |
| Support for cryptographic acceleration instructions on Power10 or | |
| later CPU. This module supports stitched acceleration for AES/GCM. | |
| config CRYPTO_DEV_VMX | |
| bool "Support for VMX cryptographic acceleration instructions" | |
| depends on PPC64 && VSX | |
| help | |
| Support for VMX cryptographic acceleration instructions. | |
| config CRYPTO_DEV_VMX_ENCRYPT | |
| tristate "Encryption acceleration support on P8 CPU" | |
| depends on CRYPTO_DEV_VMX | |
| select CRYPTO_AES | |
| select CRYPTO_CBC | |
| select CRYPTO_CTR | |
| select CRYPTO_XTS | |
| default m | |
| help | |
| Support for VMX cryptographic acceleration instructions on Power8 CPU. | |
| This module supports acceleration for AES in hardware. If you choose | |
| 'M' here, this module will be called vmx-crypto. | |
| endmenu |