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# SPDX-License-Identifier: GPL-2.0
menu "Accelerated Cryptographic Algorithms for CPU (powerpc)"
config CRYPTO_CRC32C_VPMSUM
tristate "CRC32c"
depends on PPC64 && ALTIVEC
select CRYPTO_HASH
select CRC32
help
CRC32c CRC algorithm with the iSCSI polynomial (RFC 3385 and RFC 3720)
Architecture: powerpc64 using
- AltiVec extensions
Enable on POWER8 and newer processors for improved performance.
config CRYPTO_CRCT10DIF_VPMSUM
tristate "CRC32T10DIF"
depends on PPC64 && ALTIVEC && CRC_T10DIF
select CRYPTO_HASH
help
CRC16 CRC algorithm used for the T10 (SCSI) Data Integrity Field (DIF)
Architecture: powerpc64 using
- AltiVec extensions
Enable on POWER8 and newer processors for improved performance.
config CRYPTO_VPMSUM_TESTER
tristate "CRC32c and CRC32T10DIF hardware acceleration tester"
depends on CRYPTO_CRCT10DIF_VPMSUM && CRYPTO_CRC32C_VPMSUM
help
Stress test for CRC32c and CRCT10DIF algorithms implemented with
powerpc64 AltiVec extensions (POWER8 vpmsum instructions).
Unless you are testing these algorithms, you don't need this.
config CRYPTO_MD5_PPC
tristate "Digests: MD5"
depends on PPC
select CRYPTO_HASH
help
MD5 message digest algorithm (RFC1321)
Architecture: powerpc
config CRYPTO_SHA1_PPC
tristate "Hash functions: SHA-1"
depends on PPC
help
SHA-1 secure hash algorithm (FIPS 180)
Architecture: powerpc
config CRYPTO_SHA1_PPC_SPE
tristate "Hash functions: SHA-1 (SPE)"
depends on PPC && SPE
help
SHA-1 secure hash algorithm (FIPS 180)
Architecture: powerpc using
- SPE (Signal Processing Engine) extensions
config CRYPTO_SHA256_PPC_SPE
tristate "Hash functions: SHA-224 and SHA-256 (SPE)"
depends on PPC && SPE
select CRYPTO_SHA256
select CRYPTO_HASH
help
SHA-224 and SHA-256 secure hash algorithms (FIPS 180)
Architecture: powerpc using
- SPE (Signal Processing Engine) extensions
config CRYPTO_AES_PPC_SPE
tristate "Ciphers: AES, modes: ECB/CBC/CTR/XTS (SPE)"
depends on PPC && SPE
select CRYPTO_SKCIPHER
help
Block ciphers: AES cipher algorithms (FIPS-197)
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.
endmenu
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