xref: /openbmc/linux/arch/arm/crypto/Kconfig (revision 4bdc0d67)
1# SPDX-License-Identifier: GPL-2.0
2
3menuconfig ARM_CRYPTO
4	bool "ARM Accelerated Cryptographic Algorithms"
5	depends on ARM
6	help
7	  Say Y here to choose from a selection of cryptographic algorithms
8	  implemented using ARM specific CPU features or instructions.
9
10if ARM_CRYPTO
11
12config CRYPTO_SHA1_ARM
13	tristate "SHA1 digest algorithm (ARM-asm)"
14	select CRYPTO_SHA1
15	select CRYPTO_HASH
16	help
17	  SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2) implemented
18	  using optimized ARM assembler.
19
20config CRYPTO_SHA1_ARM_NEON
21	tristate "SHA1 digest algorithm (ARM NEON)"
22	depends on KERNEL_MODE_NEON
23	select CRYPTO_SHA1_ARM
24	select CRYPTO_SHA1
25	select CRYPTO_HASH
26	help
27	  SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2) implemented
28	  using optimized ARM NEON assembly, when NEON instructions are
29	  available.
30
31config CRYPTO_SHA1_ARM_CE
32	tristate "SHA1 digest algorithm (ARM v8 Crypto Extensions)"
33	depends on KERNEL_MODE_NEON && (CC_IS_CLANG || GCC_VERSION >= 40800)
34	select CRYPTO_SHA1_ARM
35	select CRYPTO_HASH
36	help
37	  SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2) implemented
38	  using special ARMv8 Crypto Extensions.
39
40config CRYPTO_SHA2_ARM_CE
41	tristate "SHA-224/256 digest algorithm (ARM v8 Crypto Extensions)"
42	depends on KERNEL_MODE_NEON && (CC_IS_CLANG || GCC_VERSION >= 40800)
43	select CRYPTO_SHA256_ARM
44	select CRYPTO_HASH
45	help
46	  SHA-256 secure hash standard (DFIPS 180-2) implemented
47	  using special ARMv8 Crypto Extensions.
48
49config CRYPTO_SHA256_ARM
50	tristate "SHA-224/256 digest algorithm (ARM-asm and NEON)"
51	select CRYPTO_HASH
52	depends on !CPU_V7M
53	help
54	  SHA-256 secure hash standard (DFIPS 180-2) implemented
55	  using optimized ARM assembler and NEON, when available.
56
57config CRYPTO_SHA512_ARM
58	tristate "SHA-384/512 digest algorithm (ARM-asm and NEON)"
59	select CRYPTO_HASH
60	depends on !CPU_V7M
61	help
62	  SHA-512 secure hash standard (DFIPS 180-2) implemented
63	  using optimized ARM assembler and NEON, when available.
64
65config CRYPTO_AES_ARM
66	tristate "Scalar AES cipher for ARM"
67	select CRYPTO_ALGAPI
68	select CRYPTO_AES
69	help
70	  Use optimized AES assembler routines for ARM platforms.
71
72	  On ARM processors without the Crypto Extensions, this is the
73	  fastest AES implementation for single blocks.  For multiple
74	  blocks, the NEON bit-sliced implementation is usually faster.
75
76	  This implementation may be vulnerable to cache timing attacks,
77	  since it uses lookup tables.  However, as countermeasures it
78	  disables IRQs and preloads the tables; it is hoped this makes
79	  such attacks very difficult.
80
81config CRYPTO_AES_ARM_BS
82	tristate "Bit sliced AES using NEON instructions"
83	depends on KERNEL_MODE_NEON
84	select CRYPTO_SKCIPHER
85	select CRYPTO_LIB_AES
86	select CRYPTO_SIMD
87	help
88	  Use a faster and more secure NEON based implementation of AES in CBC,
89	  CTR and XTS modes
90
91	  Bit sliced AES gives around 45% speedup on Cortex-A15 for CTR mode
92	  and for XTS mode encryption, CBC and XTS mode decryption speedup is
93	  around 25%. (CBC encryption speed is not affected by this driver.)
94	  This implementation does not rely on any lookup tables so it is
95	  believed to be invulnerable to cache timing attacks.
96
97config CRYPTO_AES_ARM_CE
98	tristate "Accelerated AES using ARMv8 Crypto Extensions"
99	depends on KERNEL_MODE_NEON && (CC_IS_CLANG || GCC_VERSION >= 40800)
100	select CRYPTO_SKCIPHER
101	select CRYPTO_LIB_AES
102	select CRYPTO_SIMD
103	help
104	  Use an implementation of AES in CBC, CTR and XTS modes that uses
105	  ARMv8 Crypto Extensions
106
107config CRYPTO_GHASH_ARM_CE
108	tristate "PMULL-accelerated GHASH using NEON/ARMv8 Crypto Extensions"
109	depends on KERNEL_MODE_NEON && (CC_IS_CLANG || GCC_VERSION >= 40800)
110	select CRYPTO_HASH
111	select CRYPTO_CRYPTD
112	select CRYPTO_GF128MUL
113	help
114	  Use an implementation of GHASH (used by the GCM AEAD chaining mode)
115	  that uses the 64x64 to 128 bit polynomial multiplication (vmull.p64)
116	  that is part of the ARMv8 Crypto Extensions, or a slower variant that
117	  uses the vmull.p8 instruction that is part of the basic NEON ISA.
118
119config CRYPTO_CRCT10DIF_ARM_CE
120	tristate "CRCT10DIF digest algorithm using PMULL instructions"
121	depends on KERNEL_MODE_NEON && (CC_IS_CLANG || GCC_VERSION >= 40800)
122	depends on CRC_T10DIF
123	select CRYPTO_HASH
124
125config CRYPTO_CRC32_ARM_CE
126	tristate "CRC32(C) digest algorithm using CRC and/or PMULL instructions"
127	depends on KERNEL_MODE_NEON && (CC_IS_CLANG || GCC_VERSION >= 40800)
128	depends on CRC32
129	select CRYPTO_HASH
130
131config CRYPTO_CHACHA20_NEON
132	tristate "NEON and scalar accelerated ChaCha stream cipher algorithms"
133	select CRYPTO_SKCIPHER
134	select CRYPTO_ARCH_HAVE_LIB_CHACHA
135
136config CRYPTO_POLY1305_ARM
137	tristate "Accelerated scalar and SIMD Poly1305 hash implementations"
138	select CRYPTO_HASH
139	select CRYPTO_ARCH_HAVE_LIB_POLY1305
140
141config CRYPTO_NHPOLY1305_NEON
142	tristate "NEON accelerated NHPoly1305 hash function (for Adiantum)"
143	depends on KERNEL_MODE_NEON
144	select CRYPTO_NHPOLY1305
145
146config CRYPTO_CURVE25519_NEON
147	tristate "NEON accelerated Curve25519 scalar multiplication library"
148	depends on KERNEL_MODE_NEON
149	select CRYPTO_LIB_CURVE25519_GENERIC
150	select CRYPTO_ARCH_HAVE_LIB_CURVE25519
151
152endif
153