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crypto: Kconfig - simplify cipher entries
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Shorten menu titles and make them consistent:
- acronym
- name
- architecture features in parenthesis
- no suffixes like "<something> algorithm", "support", or
  "hardware acceleration", or "optimized"

Simplify help text descriptions, update references, and ensure that
https references are still valid.

Signed-off-by: Robert Elliott <elliott@hpe.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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@RobertCElliott @herbertx
RobertCElliott authored and herbertx committed Aug 26, 2022
1 parent 9bc5171 commit cf514b2
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Showing 8 changed files with 410 additions and 344 deletions.
40 changes: 31 additions & 9 deletions arch/arm/crypto/Kconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -144,11 +144,13 @@ config CRYPTO_SHA512_ARM
- NEON (Advanced SIMD) extensions

config CRYPTO_AES_ARM
tristate "Scalar AES cipher for ARM"
tristate "Ciphers: AES"
select CRYPTO_ALGAPI
select CRYPTO_AES
help
Use optimized AES assembler routines for ARM platforms.
Block ciphers: AES cipher algorithms (FIPS-197)

Architecture: arm

On ARM processors without the Crypto Extensions, this is the
fastest AES implementation for single blocks. For multiple
Expand All @@ -160,16 +162,21 @@ config CRYPTO_AES_ARM
such attacks very difficult.

config CRYPTO_AES_ARM_BS
tristate "Bit sliced AES using NEON instructions"
tristate "Ciphers: AES, modes: ECB/CBC/CTR/XTS (bit-sliced NEON)"
depends on KERNEL_MODE_NEON
select CRYPTO_SKCIPHER
select CRYPTO_LIB_AES
select CRYPTO_AES
select CRYPTO_CBC
select CRYPTO_SIMD
help
Use a faster and more secure NEON based implementation of AES in CBC,
CTR and XTS modes
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
Expand All @@ -178,19 +185,34 @@ config CRYPTO_AES_ARM_BS
believed to be invulnerable to cache timing attacks.

config CRYPTO_AES_ARM_CE
tristate "Accelerated AES using ARMv8 Crypto Extensions"
tristate "Ciphers: AES, modes: ECB/CBC/CTS/CTR/XTS (ARMv8 Crypto Extensions)"
depends on KERNEL_MODE_NEON
select CRYPTO_SKCIPHER
select CRYPTO_LIB_AES
select CRYPTO_SIMD
help
Use an implementation of AES in CBC, CTR and XTS modes that uses
ARMv8 Crypto Extensions
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

config CRYPTO_CHACHA20_NEON
tristate "NEON and scalar accelerated ChaCha stream cipher algorithms"
tristate "Ciphers: ChaCha20, XChaCha20, XChaCha12 (NEON)"
select CRYPTO_SKCIPHER
select CRYPTO_ARCH_HAVE_LIB_CHACHA
help
Length-preserving ciphers: ChaCha20, XChaCha20, and XChaCha12
stream cipher algorithms

Architecture: arm using:
- NEON (Advanced SIMD) extensions

config CRYPTO_CRC32_ARM_CE
tristate "CRC32C and CRC32"
Expand Down
109 changes: 99 additions & 10 deletions arch/arm64/crypto/Kconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -118,66 +118,155 @@ config CRYPTO_POLYVAL_ARM64_CE
- ARMv8 Crypto Extensions

config CRYPTO_AES_ARM64
tristate "AES core cipher using scalar instructions"
tristate "Ciphers: AES, modes: ECB, CBC, CTR, CTS, XCTR, XTS"
select CRYPTO_AES
help
Block ciphers: AES cipher algorithms (FIPS-197)
Length-preserving ciphers: AES with ECB, CBC, CTR, CTS,
XCTR, and XTS modes
AEAD cipher: AES with CBC, ESSIV, and SHA-256
for fscrypt and dm-crypt

Architecture: arm64

config CRYPTO_AES_ARM64_CE
tristate "AES core cipher using ARMv8 Crypto Extensions"
tristate "Ciphers: AES (ARMv8 Crypto Extensions)"
depends on ARM64 && KERNEL_MODE_NEON
select CRYPTO_ALGAPI
select CRYPTO_LIB_AES
help
Block ciphers: AES cipher algorithms (FIPS-197)

Architecture: arm64 using:
- ARMv8 Crypto Extensions

config CRYPTO_AES_ARM64_CE_BLK
tristate "AES in ECB/CBC/CTR/XTS/XCTR modes using ARMv8 Crypto Extensions"
tristate "Ciphers: AES, modes: ECB/CBC/CTR/XTS (ARMv8 Crypto Extensions)"
depends on KERNEL_MODE_NEON
select CRYPTO_SKCIPHER
select CRYPTO_AES_ARM64_CE
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)

Architecture: arm64 using:
- ARMv8 Crypto Extensions

config CRYPTO_AES_ARM64_NEON_BLK
tristate "AES in ECB/CBC/CTR/XTS/XCTR modes using NEON instructions"
tristate "Ciphers: AES, modes: ECB/CBC/CTR/XTS (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)

Architecture: arm64 using:
- NEON (Advanced SIMD) extensions

config CRYPTO_CHACHA20_NEON
tristate "ChaCha20, XChaCha20, and XChaCha12 stream ciphers using NEON instructions"
tristate "Ciphers: ChaCha (NEON)"
depends on KERNEL_MODE_NEON
select CRYPTO_SKCIPHER
select CRYPTO_LIB_CHACHA_GENERIC
select CRYPTO_ARCH_HAVE_LIB_CHACHA
help
Length-preserving ciphers: ChaCha20, XChaCha20, and XChaCha12
stream cipher algorithms

Architecture: arm64 using:
- NEON (Advanced SIMD) extensions

config CRYPTO_AES_ARM64_BS
tristate "AES in ECB/CBC/CTR/XTS modes using bit-sliced NEON algorithm"
tristate "Ciphers: AES, modes: ECB/CBC/CTR/XCTR/XTS modes (bit-sliced NEON)"
depends on KERNEL_MODE_NEON
select CRYPTO_SKCIPHER
select CRYPTO_AES_ARM64_NEON_BLK
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)
- XCTR mode for HCTR2
- XTS (XOR Encrypt XOR with ciphertext stealing) mode (NIST SP800-38E
and IEEE 1619)

Architecture: arm64 using:
- bit-sliced algorithm
- NEON (Advanced SIMD) extensions

config CRYPTO_SM4_ARM64_CE
tristate "SM4 symmetric cipher (ARMv8.2 Crypto Extensions)"
tristate "Ciphers: SM4 (ARMv8.2 Crypto Extensions)"
depends on KERNEL_MODE_NEON
select CRYPTO_ALGAPI
select CRYPTO_SM4
help
Block ciphers: SM4 cipher algorithms (OSCCA GB/T 32907-2016)

Architecture: arm64 using:
- ARMv8.2 Crypto Extensions
- NEON (Advanced SIMD) extensions

config CRYPTO_SM4_ARM64_CE_BLK
tristate "SM4 in ECB/CBC/CFB/CTR modes using ARMv8 Crypto Extensions"
tristate "Ciphers: SM4, modes: ECB/CBC/CFB/CTR (ARMv8 Crypto Extensions)"
depends on KERNEL_MODE_NEON
select CRYPTO_SKCIPHER
select CRYPTO_SM4
help
Length-preserving ciphers: SM4 cipher algorithms (OSCCA GB/T 32907-2016)
with block cipher modes:
- ECB (Electronic Codebook) mode (NIST SP800-38A)
- CBC (Cipher Block Chaining) mode (NIST SP800-38A)
- CFB (Cipher Feedback) mode (NIST SP800-38A)
- CTR (Counter) mode (NIST SP800-38A)

Architecture: arm64 using:
- ARMv8 Crypto Extensions
- NEON (Advanced SIMD) extensions

config CRYPTO_SM4_ARM64_NEON_BLK
tristate "SM4 in ECB/CBC/CFB/CTR modes using NEON instructions"
tristate "Ciphers: SM4, modes: ECB/CBC/CFB/CTR (NEON)"
depends on KERNEL_MODE_NEON
select CRYPTO_SKCIPHER
select CRYPTO_SM4
help
Length-preserving ciphers: SM4 cipher algorithms (OSCCA GB/T 32907-2016)
with block cipher modes:
- ECB (Electronic Codebook) mode (NIST SP800-38A)
- CBC (Cipher Block Chaining) mode (NIST SP800-38A)
- CFB (Cipher Feedback) mode (NIST SP800-38A)
- CTR (Counter) mode (NIST SP800-38A)

Architecture: arm64 using:
- NEON (Advanced SIMD) extensions

config CRYPTO_AES_ARM64_CE_CCM
tristate "AES in CCM mode using ARMv8 Crypto Extensions"
tristate "AEAD cipher: AES in CCM mode (ARMv8 Crypto Extensions)"
depends on ARM64 && KERNEL_MODE_NEON
select CRYPTO_ALGAPI
select CRYPTO_AES_ARM64_CE
select CRYPTO_AEAD
select CRYPTO_LIB_AES
help
AEAD cipher: AES cipher algorithms (FIPS-197) with
CCM (Counter with Cipher Block Chaining-Message Authentication Code)
authenticated encryption mode (NIST SP800-38C)

Architecture: arm64 using:
- ARMv8 Crypto Extensions
- NEON (Advanced SIMD) extensions

config CRYPTO_CRCT10DIF_ARM64_CE
tristate "CRCT10DIF (PMULL)"
Expand Down
7 changes: 6 additions & 1 deletion arch/mips/crypto/Kconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -61,9 +61,14 @@ config CRYPTO_SHA512_OCTEON
Architecture: mips OCTEON using crypto instructions, when available

config CRYPTO_CHACHA_MIPS
tristate "ChaCha stream cipher algorithms (MIPS 32r2 optimized)"
tristate "Ciphers: ChaCha20, XChaCha20, XChaCha12 (MIPS32r2)"
depends on CPU_MIPS32_R2
select CRYPTO_SKCIPHER
select CRYPTO_ARCH_HAVE_LIB_CHACHA
help
Length-preserving ciphers: ChaCha20, XChaCha20, and XChaCha12
stream cipher algorithms

Architecture: MIPS32r2

endmenu
14 changes: 11 additions & 3 deletions arch/powerpc/crypto/Kconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -73,12 +73,20 @@ config CRYPTO_SHA256_PPC_SPE
- SPE (Signal Processing Engine) extensions

config CRYPTO_AES_PPC_SPE
tristate "AES cipher algorithms (PPC SPE)"
tristate "Ciphers: AES, modes: ECB/CBC/CTR/XTS (SPE)"
depends on PPC && SPE
select CRYPTO_SKCIPHER
help
AES cipher algorithms (FIPS-197). Additionally the acceleration
for popular block cipher modes ECB, CBC, CTR and XTS is supported.
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
Expand Down
28 changes: 19 additions & 9 deletions arch/s390/crypto/Kconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -81,44 +81,54 @@ config CRYPTO_GHASH_S390
It is available as of z196.

config CRYPTO_AES_S390
tristate "AES cipher algorithms"
tristate "Ciphers: AES, modes: ECB, CBC, CTR, XTS, GCM"
depends on S390
select CRYPTO_ALGAPI
select CRYPTO_SKCIPHER
help
This is the s390 hardware accelerated implementation of the
AES cipher algorithms (FIPS-197).
Block cipher: AES cipher algorithms (FIPS 197)
AEAD cipher: AES with GCM
Length-preserving ciphers: AES with ECB, CBC, XTS, and CTR modes

Architecture: s390

As of z9 the ECB and CBC modes are hardware accelerated
for 128 bit keys.

As of z10 the ECB and CBC modes are hardware accelerated
for all AES key sizes.

As of z196 the CTR mode is hardware accelerated for all AES
key sizes and XTS mode is hardware accelerated for 256 and
512 bit keys.

config CRYPTO_DES_S390
tristate "DES and Triple DES cipher algorithms"
tristate "Ciphers: DES and Triple DES EDE, modes: ECB, CBC, CTR"
depends on S390
select CRYPTO_ALGAPI
select CRYPTO_SKCIPHER
select CRYPTO_LIB_DES
help
This is the s390 hardware accelerated implementation of the
DES cipher algorithm (FIPS 46-2), and Triple DES EDE (FIPS 46-3).
Block ciphers: DES (FIPS 46-2) cipher algorithm
Block ciphers: Triple DES EDE (FIPS 46-3) cipher algorithm
Length-preserving ciphers: DES with ECB, CBC, and CTR modes
Length-preserving ciphers: Triple DES EDED with ECB, CBC, and CTR modes

Architecture: s390

As of z990 the ECB and CBC mode are hardware accelerated.
As of z196 the CTR mode is hardware accelerated.

config CRYPTO_CHACHA_S390
tristate "ChaCha20 stream cipher"
tristate "Ciphers: ChaCha20"
depends on S390
select CRYPTO_SKCIPHER
select CRYPTO_LIB_CHACHA_GENERIC
select CRYPTO_ARCH_HAVE_LIB_CHACHA
help
This is the s390 SIMD implementation of the ChaCha20 stream
cipher (RFC 7539).
Length-preserving cipher: ChaCha20 stream cipher (RFC 7539)

Architecture: s390

It is available as of z13.

Expand Down
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