# 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