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lib/crypto: poly1305: Consolidate into single module

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Consolidate the Poly1305 code into a single module, similar to various
other algorithms (SHA-1, SHA-256, SHA-512, etc.):

- Each arch now provides a header file lib/crypto/$(SRCARCH)/poly1305.h,
  replacing lib/crypto/$(SRCARCH)/poly1305*.c.  The header defines
  poly1305_block_init(), poly1305_blocks(), poly1305_emit(), and
  optionally poly1305_mod_init_arch().  It is included by
  lib/crypto/poly1305.c, and thus the code gets built into the single
  libpoly1305 module, with improved inlining in some cases.

- Whether arch-optimized Poly1305 is buildable is now controlled
  centrally by lib/crypto/Kconfig instead of by
  lib/crypto/$(SRCARCH)/Kconfig.  The conditions for enabling it remain
  the same as before, and it remains enabled by default.  (The PPC64 one
  remains unconditionally disabled due to 'depends on BROKEN'.)

- Any additional arch-specific translation units for the optimized
  Poly1305 code, such as assembly files, are now compiled by
  lib/crypto/Makefile instead of lib/crypto/$(SRCARCH)/Makefile.

A special consideration is needed because the Adiantum code uses the
poly1305_core_*() functions directly.  For now, just carry forward that
approach.  This means retaining the CRYPTO_LIB_POLY1305_GENERIC kconfig
symbol, and keeping the poly1305_core_*() functions in separate
translation units.  So it's not quite as streamlined I've done with the
other hash functions, but we still get a single libpoly1305 module.

Note: to see the diff from the arm, arm64, and x86 .c files to the new
.h files, view this commit with 'git show -M10'.

Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250829152513.92459-3-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
This commit is contained in:
Eric Biggers 2025-08-29 08:25:12 -07:00
parent df220cc5e6
commit b646b782e5
28 changed files with 299 additions and 424 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

2
crypto/Kconfig
View file

@ -609,6 +609,7 @@ menu "Length-preserving ciphers and modes"
config CRYPTO_ADIANTUM
tristate "Adiantum"
select CRYPTO_CHACHA20
select CRYPTO_LIB_POLY1305
select CRYPTO_LIB_POLY1305_GENERIC
select CRYPTO_NHPOLY1305
select CRYPTO_MANAGER
@ -770,6 +771,7 @@ config CRYPTO_XTS
config CRYPTO_NHPOLY1305
tristate
select CRYPTO_HASH
select CRYPTO_LIB_POLY1305
select CRYPTO_LIB_POLY1305_GENERIC
endmenu

16
include/crypto/internal/poly1305.h
View file

@ -30,12 +30,13 @@ void poly1305_core_blocks(struct poly1305_state *state,
void poly1305_core_emit(const struct poly1305_state *state, const u32 nonce[4],
void *dst);
void poly1305_block_init_arch(struct poly1305_block_state *state,
const u8 raw_key[POLY1305_BLOCK_SIZE]);
void poly1305_block_init_generic(struct poly1305_block_state *state,
const u8 raw_key[POLY1305_BLOCK_SIZE]);
void poly1305_blocks_arch(struct poly1305_block_state *state, const u8 *src,
unsigned int len, u32 padbit);
static inline void
poly1305_block_init_generic(struct poly1305_block_state *desc,
const u8 raw_key[POLY1305_BLOCK_SIZE])
{
poly1305_core_init(&desc->h);
poly1305_core_setkey(&desc->core_r, raw_key);
}
static inline void poly1305_blocks_generic(struct poly1305_block_state *state,
const u8 *src, unsigned int len,
@ -45,9 +46,6 @@ static inline void poly1305_blocks_generic(struct poly1305_block_state *state,
len / POLY1305_BLOCK_SIZE, padbit);
}
void poly1305_emit_arch(const struct poly1305_state *state,
u8 digest[POLY1305_DIGEST_SIZE], const u32 nonce[4]);
static inline void poly1305_emit_generic(const struct poly1305_state *state,
u8 digest[POLY1305_DIGEST_SIZE],
const u32 nonce[4])

50
lib/crypto/Kconfig
View file

@ -114,6 +114,33 @@ config CRYPTO_LIB_MD5_ARCH
default y if PPC
default y if SPARC64
config CRYPTO_LIB_POLY1305
tristate
help
The Poly1305 library functions. Select this if your module uses any
of the functions from <crypto/poly1305.h>.
config CRYPTO_LIB_POLY1305_ARCH
bool
depends on CRYPTO_LIB_POLY1305 && !UML
default y if ARM
default y if ARM64 && KERNEL_MODE_NEON
default y if MIPS
# The PPC64 code needs to be fixed to work in softirq context.
default y if PPC64 && CPU_LITTLE_ENDIAN && VSX && BROKEN
default y if X86_64
# This symbol controls the inclusion of the Poly1305 generic code. This differs
# from most of the other algorithms, which handle the generic code
# "automatically" via __maybe_unused. This is needed so that the Adiantum code,
# which calls the poly1305_core_*() functions directly, can enable them.
config CRYPTO_LIB_POLY1305_GENERIC
bool
depends on CRYPTO_LIB_POLY1305
# Enable if there's no arch impl or the arch impl requires the generic
# impl as a fallback. (Or if selected explicitly.)
default y if !CRYPTO_LIB_POLY1305_ARCH || PPC64
config CRYPTO_LIB_POLY1305_RSIZE
int
default 2 if MIPS
@ -121,29 +148,6 @@ config CRYPTO_LIB_POLY1305_RSIZE
default 9 if ARM || ARM64
default 1
config CRYPTO_ARCH_HAVE_LIB_POLY1305
bool
help
Declares whether the architecture provides an arch-specific
accelerated implementation of the Poly1305 library interface,
either builtin or as a module.
config CRYPTO_LIB_POLY1305_GENERIC
tristate
default CRYPTO_LIB_POLY1305 if !CRYPTO_ARCH_HAVE_LIB_POLY1305
help
This symbol can be selected by arch implementations of the Poly1305
library interface that require the generic code as a fallback, e.g.,
for SIMD implementations. If no arch specific implementation is
enabled, this implementation serves the users of CRYPTO_LIB_POLY1305.
config CRYPTO_LIB_POLY1305
tristate
help
Enable the Poly1305 library interface. This interface may be fulfilled
by either the generic implementation or an arch-specific one, if one
is available and enabled.
config CRYPTO_LIB_CHACHA20POLY1305
tristate
select CRYPTO_LIB_CHACHA

57
lib/crypto/Makefile
View file

@ -72,12 +72,59 @@ endif # CONFIG_CRYPTO_LIB_MD5_ARCH
################################################################################
obj-$(CONFIG_CRYPTO_LIB_POLY1305) += libpoly1305.o
libpoly1305-y += poly1305.o
libpoly1305-y := poly1305.o
ifeq ($(CONFIG_ARCH_SUPPORTS_INT128),y)
libpoly1305-$(CONFIG_CRYPTO_LIB_POLY1305_GENERIC) += poly1305-donna64.o
else
libpoly1305-$(CONFIG_CRYPTO_LIB_POLY1305_GENERIC) += poly1305-donna32.o
endif
obj-$(CONFIG_CRYPTO_LIB_POLY1305_GENERIC) += libpoly1305-generic.o
libpoly1305-generic-y := poly1305-donna32.o
libpoly1305-generic-$(CONFIG_ARCH_SUPPORTS_INT128) := poly1305-donna64.o
libpoly1305-generic-y += poly1305-generic.o
ifeq ($(CONFIG_CRYPTO_LIB_POLY1305_ARCH),y)
CFLAGS_poly1305.o += -I$(src)/$(SRCARCH)
ifeq ($(CONFIG_ARM),y)
libpoly1305-y += arm/poly1305-core.o
$(obj)/arm/poly1305-core.S: $(src)/arm/poly1305-armv4.pl
$(call cmd,perlasm)
# massage the perlasm code a bit so we only get the NEON routine if we need it
poly1305-aflags-$(CONFIG_CPU_V7) := -U__LINUX_ARM_ARCH__ -D__LINUX_ARM_ARCH__=5
poly1305-aflags-$(CONFIG_KERNEL_MODE_NEON) := -U__LINUX_ARM_ARCH__ -D__LINUX_ARM_ARCH__=7
AFLAGS_arm/poly1305-core.o += $(poly1305-aflags-y) $(aflags-thumb2-y)
endif
ifeq ($(CONFIG_ARM64),y)
libpoly1305-y += arm64/poly1305-core.o
$(obj)/arm64/poly1305-core.S: $(src)/arm64/poly1305-armv8.pl
$(call cmd,perlasm_with_args)
endif
ifeq ($(CONFIG_MIPS),y)
libpoly1305-y += mips/poly1305-core.o
poly1305-perlasm-flavour-$(CONFIG_32BIT) := o32
poly1305-perlasm-flavour-$(CONFIG_64BIT) := 64
quiet_cmd_perlasm_poly1305 = PERLASM $@
cmd_perlasm_poly1305 = $(PERL) $< $(poly1305-perlasm-flavour-y) $@
# Use if_changed instead of cmd, in case the flavour changed.
$(obj)/mips/poly1305-core.S: $(src)/mips/poly1305-mips.pl FORCE
$(call if_changed,perlasm_poly1305)
targets += mips/poly1305-core.S
endif
libpoly1305-$(CONFIG_PPC) += powerpc/poly1305-p10le_64.o
ifeq ($(CONFIG_X86),y)
libpoly1305-y += x86/poly1305-x86_64-cryptogams.o
$(obj)/x86/poly1305-x86_64-cryptogams.S: $(src)/x86/poly1305-x86_64-cryptogams.pl
$(call cmd,perlasm)
endif
endif # CONFIG_CRYPTO_LIB_POLY1305_ARCH
# clean-files must be defined unconditionally
clean-files += arm/poly1305-core.S \
arm64/poly1305-core.S \
mips/poly1305-core.S \
x86/poly1305-x86_64-cryptogams.S
################################################################################

5
lib/crypto/arm/Kconfig
View file

@ -17,8 +17,3 @@ config CRYPTO_CHACHA20_NEON
tristate
default CRYPTO_LIB_CHACHA
select CRYPTO_ARCH_HAVE_LIB_CHACHA
config CRYPTO_POLY1305_ARM
tristate
default CRYPTO_LIB_POLY1305
select CRYPTO_ARCH_HAVE_LIB_POLY1305

18
lib/crypto/arm/Makefile
View file

@ -6,21 +6,3 @@ libblake2s-arm-y := blake2s-core.o blake2s-glue.o
obj-$(CONFIG_CRYPTO_CHACHA20_NEON) += chacha-neon.o
chacha-neon-y := chacha-scalar-core.o chacha-glue.o
chacha-neon-$(CONFIG_KERNEL_MODE_NEON) += chacha-neon-core.o
obj-$(CONFIG_CRYPTO_POLY1305_ARM) += poly1305-arm.o
poly1305-arm-y := poly1305-core.o poly1305-glue.o
quiet_cmd_perl = PERL $@
cmd_perl = $(PERL) $(<) > $(@)
$(obj)/%-core.S: $(src)/%-armv4.pl
$(call cmd,perl)
clean-files += poly1305-core.S
aflags-thumb2-$(CONFIG_THUMB2_KERNEL) := -U__thumb2__ -D__thumb2__=1
# massage the perlasm code a bit so we only get the NEON routine if we need it
poly1305-aflags-$(CONFIG_CPU_V7) := -U__LINUX_ARM_ARCH__ -D__LINUX_ARM_ARCH__=5
poly1305-aflags-$(CONFIG_KERNEL_MODE_NEON) := -U__LINUX_ARM_ARCH__ -D__LINUX_ARM_ARCH__=7
AFLAGS_poly1305-core.o += $(poly1305-aflags-y) $(aflags-thumb2-y)

3
lib/crypto/arm/poly1305-armv4.pl
View file

@ -43,9 +43,8 @@ $code.=<<___;
#else
# define __ARM_ARCH__ __LINUX_ARM_ARCH__
# define __ARM_MAX_ARCH__ __LINUX_ARM_ARCH__
# define poly1305_init poly1305_block_init_arch
# define poly1305_init poly1305_block_init
# define poly1305_blocks poly1305_blocks_arm
# define poly1305_emit poly1305_emit_arch
#endif
#if defined(__thumb2__)

69
lib/crypto/arm/poly1305-glue.c
View file

@ -1,69 +0,0 @@
// SPDX-License-Identifier: GPL-2.0
/*
* OpenSSL/Cryptogams accelerated Poly1305 transform for ARM
*
* Copyright (C) 2019 Linaro Ltd. <ard.biesheuvel@linaro.org>
*/
#include <asm/hwcap.h>
#include <asm/neon.h>
#include <asm/simd.h>
#include <crypto/internal/poly1305.h>
#include <linux/cpufeature.h>
#include <linux/jump_label.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/unaligned.h>
asmlinkage void poly1305_block_init_arch(
struct poly1305_block_state *state,
const u8 raw_key[POLY1305_BLOCK_SIZE]);
EXPORT_SYMBOL_GPL(poly1305_block_init_arch);
asmlinkage void poly1305_blocks_arm(struct poly1305_block_state *state,
const u8 *src, u32 len, u32 hibit);
asmlinkage void poly1305_blocks_neon(struct poly1305_block_state *state,
const u8 *src, u32 len, u32 hibit);
asmlinkage void poly1305_emit_arch(const struct poly1305_state *state,
u8 digest[POLY1305_DIGEST_SIZE],
const u32 nonce[4]);
EXPORT_SYMBOL_GPL(poly1305_emit_arch);
static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_neon);
void poly1305_blocks_arch(struct poly1305_block_state *state, const u8 *src,
unsigned int len, u32 padbit)
{
len = round_down(len, POLY1305_BLOCK_SIZE);
if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) &&
static_branch_likely(&have_neon) && likely(may_use_simd())) {
do {
unsigned int todo = min_t(unsigned int, len, SZ_4K);
kernel_neon_begin();
poly1305_blocks_neon(state, src, todo, padbit);
kernel_neon_end();
len -= todo;
src += todo;
} while (len);
} else
poly1305_blocks_arm(state, src, len, padbit);
}
EXPORT_SYMBOL_GPL(poly1305_blocks_arch);
static int __init arm_poly1305_mod_init(void)
{
if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) &&
(elf_hwcap & HWCAP_NEON))
static_branch_enable(&have_neon);
return 0;
}
subsys_initcall(arm_poly1305_mod_init);
static void __exit arm_poly1305_mod_exit(void)
{
}
module_exit(arm_poly1305_mod_exit);
MODULE_DESCRIPTION("Accelerated Poly1305 transform for ARM");
MODULE_LICENSE("GPL v2");

53
lib/crypto/arm/poly1305.h Normal file
View file

@ -0,0 +1,53 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* OpenSSL/Cryptogams accelerated Poly1305 transform for ARM
*
* Copyright (C) 2019 Linaro Ltd. <ard.biesheuvel@linaro.org>
*/
#include <asm/hwcap.h>
#include <asm/neon.h>
#include <asm/simd.h>
#include <linux/cpufeature.h>
#include <linux/jump_label.h>
#include <linux/kernel.h>
asmlinkage void poly1305_block_init(struct poly1305_block_state *state,
const u8 raw_key[POLY1305_BLOCK_SIZE]);
asmlinkage void poly1305_blocks_arm(struct poly1305_block_state *state,
const u8 *src, u32 len, u32 hibit);
asmlinkage void poly1305_blocks_neon(struct poly1305_block_state *state,
const u8 *src, u32 len, u32 hibit);
asmlinkage void poly1305_emit(const struct poly1305_state *state,
u8 digest[POLY1305_DIGEST_SIZE],
const u32 nonce[4]);
static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_neon);
static void poly1305_blocks(struct poly1305_block_state *state, const u8 *src,
unsigned int len, u32 padbit)
{
if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) &&
static_branch_likely(&have_neon) && likely(may_use_simd())) {
do {
unsigned int todo = min_t(unsigned int, len, SZ_4K);
kernel_neon_begin();
poly1305_blocks_neon(state, src, todo, padbit);
kernel_neon_end();
len -= todo;
src += todo;
} while (len);
} else
poly1305_blocks_arm(state, src, len, padbit);
}
#ifdef CONFIG_KERNEL_MODE_NEON
#define poly1305_mod_init_arch poly1305_mod_init_arch
static void poly1305_mod_init_arch(void)
{
if (elf_hwcap & HWCAP_NEON)
static_branch_enable(&have_neon);
}
#endif /* CONFIG_KERNEL_MODE_NEON */

6
lib/crypto/arm64/Kconfig
View file

@ -6,9 +6,3 @@ config CRYPTO_CHACHA20_NEON
default CRYPTO_LIB_CHACHA
select CRYPTO_LIB_CHACHA_GENERIC
select CRYPTO_ARCH_HAVE_LIB_CHACHA
config CRYPTO_POLY1305_NEON
tristate
depends on KERNEL_MODE_NEON
default CRYPTO_LIB_POLY1305
select CRYPTO_ARCH_HAVE_LIB_POLY1305

13
lib/crypto/arm64/Makefile
View file

@ -2,16 +2,3 @@
obj-$(CONFIG_CRYPTO_CHACHA20_NEON) += chacha-neon.o
chacha-neon-y := chacha-neon-core.o chacha-neon-glue.o
obj-$(CONFIG_CRYPTO_POLY1305_NEON) += poly1305-neon.o
poly1305-neon-y := poly1305-core.o poly1305-glue.o
AFLAGS_poly1305-core.o += -Dpoly1305_init=poly1305_block_init_arch
AFLAGS_poly1305-core.o += -Dpoly1305_emit=poly1305_emit_arch
quiet_cmd_perlasm = PERLASM $@
cmd_perlasm = $(PERL) $(<) void $(@)
$(obj)/%-core.S: $(src)/%-armv8.pl
$(call cmd,perlasm)
clean-files += poly1305-core.S

3
lib/crypto/arm64/poly1305-armv8.pl
View file

@ -50,6 +50,9 @@ $code.=<<___;
#ifndef __KERNEL__
# include "arm_arch.h"
.extern OPENSSL_armcap_P
#else
# define poly1305_init poly1305_block_init
# define poly1305_blocks poly1305_blocks_arm64
#endif
.text

67
lib/crypto/arm64/poly1305-glue.c
View file

@ -1,67 +0,0 @@
// SPDX-License-Identifier: GPL-2.0
/*
* OpenSSL/Cryptogams accelerated Poly1305 transform for arm64
*
* Copyright (C) 2019 Linaro Ltd. <ard.biesheuvel@linaro.org>
*/
#include <asm/hwcap.h>
#include <asm/neon.h>
#include <asm/simd.h>
#include <crypto/internal/poly1305.h>
#include <linux/cpufeature.h>
#include <linux/jump_label.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/unaligned.h>
asmlinkage void poly1305_block_init_arch(
struct poly1305_block_state *state,
const u8 raw_key[POLY1305_BLOCK_SIZE]);
EXPORT_SYMBOL_GPL(poly1305_block_init_arch);
asmlinkage void poly1305_blocks(struct poly1305_block_state *state,
const u8 *src, u32 len, u32 hibit);
asmlinkage void poly1305_blocks_neon(struct poly1305_block_state *state,
const u8 *src, u32 len, u32 hibit);
asmlinkage void poly1305_emit_arch(const struct poly1305_state *state,
u8 digest[POLY1305_DIGEST_SIZE],
const u32 nonce[4]);
EXPORT_SYMBOL_GPL(poly1305_emit_arch);
static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_neon);
void poly1305_blocks_arch(struct poly1305_block_state *state, const u8 *src,
unsigned int len, u32 padbit)
{
len = round_down(len, POLY1305_BLOCK_SIZE);
if (static_branch_likely(&have_neon) && likely(may_use_simd())) {
do {
unsigned int todo = min_t(unsigned int, len, SZ_4K);
kernel_neon_begin();
poly1305_blocks_neon(state, src, todo, padbit);
kernel_neon_end();
len -= todo;
src += todo;
} while (len);
} else
poly1305_blocks(state, src, len, padbit);
}
EXPORT_SYMBOL_GPL(poly1305_blocks_arch);
static int __init neon_poly1305_mod_init(void)
{
if (cpu_have_named_feature(ASIMD))
static_branch_enable(&have_neon);
return 0;
}
subsys_initcall(neon_poly1305_mod_init);
static void __exit neon_poly1305_mod_exit(void)
{
}
module_exit(neon_poly1305_mod_exit);
MODULE_DESCRIPTION("Poly1305 authenticator (ARM64 optimized)");
MODULE_LICENSE("GPL v2");

50
lib/crypto/arm64/poly1305.h Normal file
View file

@ -0,0 +1,50 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* OpenSSL/Cryptogams accelerated Poly1305 transform for arm64
*
* Copyright (C) 2019 Linaro Ltd. <ard.biesheuvel@linaro.org>
*/
#include <asm/hwcap.h>
#include <asm/neon.h>
#include <asm/simd.h>
#include <linux/cpufeature.h>
#include <linux/jump_label.h>
#include <linux/kernel.h>
asmlinkage void poly1305_block_init(struct poly1305_block_state *state,
const u8 raw_key[POLY1305_BLOCK_SIZE]);
asmlinkage void poly1305_blocks_arm64(struct poly1305_block_state *state,
const u8 *src, u32 len, u32 hibit);
asmlinkage void poly1305_blocks_neon(struct poly1305_block_state *state,
const u8 *src, u32 len, u32 hibit);
asmlinkage void poly1305_emit(const struct poly1305_state *state,
u8 digest[POLY1305_DIGEST_SIZE],
const u32 nonce[4]);
static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_neon);
static void poly1305_blocks(struct poly1305_block_state *state, const u8 *src,
unsigned int len, u32 padbit)
{
if (static_branch_likely(&have_neon) && likely(may_use_simd())) {
do {
unsigned int todo = min_t(unsigned int, len, SZ_4K);
kernel_neon_begin();
poly1305_blocks_neon(state, src, todo, padbit);
kernel_neon_end();
len -= todo;
src += todo;
} while (len);
} else
poly1305_blocks_arm64(state, src, len, padbit);
}
#define poly1305_mod_init_arch poly1305_mod_init_arch
static void poly1305_mod_init_arch(void)
{
if (cpu_have_named_feature(ASIMD))
static_branch_enable(&have_neon);
}

5
lib/crypto/mips/Kconfig
View file

@ -5,8 +5,3 @@ config CRYPTO_CHACHA_MIPS
depends on CPU_MIPS32_R2
default CRYPTO_LIB_CHACHA
select CRYPTO_ARCH_HAVE_LIB_CHACHA
config CRYPTO_POLY1305_MIPS
tristate
default CRYPTO_LIB_POLY1305
select CRYPTO_ARCH_HAVE_LIB_POLY1305

14
lib/crypto/mips/Makefile
View file

@ -3,17 +3,3 @@
obj-$(CONFIG_CRYPTO_CHACHA_MIPS) += chacha-mips.o
chacha-mips-y := chacha-core.o chacha-glue.o
AFLAGS_chacha-core.o += -O2 # needed to fill branch delay slots
obj-$(CONFIG_CRYPTO_POLY1305_MIPS) += poly1305-mips.o
poly1305-mips-y := poly1305-core.o poly1305-glue.o
perlasm-flavour-$(CONFIG_32BIT) := o32
perlasm-flavour-$(CONFIG_64BIT) := 64
quiet_cmd_perlasm = PERLASM $@
cmd_perlasm = $(PERL) $(<) $(perlasm-flavour-y) $(@)
$(obj)/poly1305-core.S: $(src)/poly1305-mips.pl FORCE
$(call if_changed,perlasm)
targets += poly1305-core.S

27
lib/crypto/mips/poly1305-glue.c
View file

@ -1,27 +0,0 @@
// SPDX-License-Identifier: GPL-2.0
/*
* OpenSSL/Cryptogams accelerated Poly1305 transform for MIPS
*
* Copyright (C) 2019 Linaro Ltd. <ard.biesheuvel@linaro.org>
*/
#include <crypto/internal/poly1305.h>
#include <linux/cpufeature.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/unaligned.h>
asmlinkage void poly1305_block_init_arch(
struct poly1305_block_state *state,
const u8 raw_key[POLY1305_BLOCK_SIZE]);
EXPORT_SYMBOL_GPL(poly1305_block_init_arch);
asmlinkage void poly1305_blocks_arch(struct poly1305_block_state *state,
const u8 *src, u32 len, u32 hibit);
EXPORT_SYMBOL_GPL(poly1305_blocks_arch);
asmlinkage void poly1305_emit_arch(const struct poly1305_state *state,
u8 digest[POLY1305_DIGEST_SIZE],
const u32 nonce[4]);
EXPORT_SYMBOL_GPL(poly1305_emit_arch);
MODULE_DESCRIPTION("Poly1305 transform (MIPS accelerated");
MODULE_LICENSE("GPL v2");

8
lib/crypto/mips/poly1305-mips.pl
View file

@ -93,9 +93,7 @@ $code.=<<___;
#endif
#ifdef __KERNEL__
# define poly1305_init poly1305_block_init_arch
# define poly1305_blocks poly1305_blocks_arch
# define poly1305_emit poly1305_emit_arch
# define poly1305_init poly1305_block_init
#endif
#if defined(__MIPSEB__) && !defined(MIPSEB)
@ -565,9 +563,7 @@ $code.=<<___;
#endif
#ifdef __KERNEL__
# define poly1305_init poly1305_block_init_arch
# define poly1305_blocks poly1305_blocks_arch
# define poly1305_emit poly1305_emit_arch
# define poly1305_init poly1305_block_init
#endif
#if defined(__MIPSEB__) && !defined(MIPSEB)

14
lib/crypto/mips/poly1305.h Normal file
View file

@ -0,0 +1,14 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* OpenSSL/Cryptogams accelerated Poly1305 transform for MIPS
*
* Copyright (C) 2019 Linaro Ltd. <ard.biesheuvel@linaro.org>
*/
asmlinkage void poly1305_block_init(struct poly1305_block_state *state,
const u8 raw_key[POLY1305_BLOCK_SIZE]);
asmlinkage void poly1305_blocks(struct poly1305_block_state *state,
const u8 *src, u32 len, u32 hibit);
asmlinkage void poly1305_emit(const struct poly1305_state *state,
u8 digest[POLY1305_DIGEST_SIZE],
const u32 nonce[4]);

25
lib/crypto/poly1305-generic.c
View file

@ -1,25 +0,0 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Poly1305 authenticator algorithm, RFC7539
*
* Copyright (C) 2015 Martin Willi
*
* Based on public domain code by Andrew Moon and Daniel J. Bernstein.
*/
#include <crypto/internal/poly1305.h>
#include <linux/export.h>
#include <linux/kernel.h>
#include <linux/module.h>
void poly1305_block_init_generic(struct poly1305_block_state *desc,
const u8 raw_key[POLY1305_BLOCK_SIZE])
{
poly1305_core_init(&desc->h);
poly1305_core_setkey(&desc->core_r, raw_key);
}
EXPORT_SYMBOL_GPL(poly1305_block_init_generic);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Martin Willi <martin@strongswan.org>");
MODULE_DESCRIPTION("Poly1305 algorithm (generic implementation)");

81
lib/crypto/poly1305.c
View file

@ -7,7 +7,6 @@
* Based on public domain code by Andrew Moon and Daniel J. Bernstein.
*/
#include <crypto/internal/blockhash.h>
#include <crypto/internal/poly1305.h>
#include <linux/export.h>
#include <linux/kernel.h>
@ -15,6 +14,14 @@
#include <linux/string.h>
#include <linux/unaligned.h>
#ifdef CONFIG_CRYPTO_LIB_POLY1305_ARCH
#include "poly1305.h" /* $(SRCARCH)/poly1305.h */
#else
#define poly1305_block_init poly1305_block_init_generic
#define poly1305_blocks poly1305_blocks_generic
#define poly1305_emit poly1305_emit_generic
#endif
void poly1305_init(struct poly1305_desc_ctx *desc,
const u8 key[POLY1305_KEY_SIZE])
{
@ -23,28 +30,40 @@ void poly1305_init(struct poly1305_desc_ctx *desc,
desc->s[2] = get_unaligned_le32(key + 24);
desc->s[3] = get_unaligned_le32(key + 28);
desc->buflen = 0;
if (IS_ENABLED(CONFIG_CRYPTO_ARCH_HAVE_LIB_POLY1305))
poly1305_block_init_arch(&desc->state, key);
else
poly1305_block_init_generic(&desc->state, key);
poly1305_block_init(&desc->state, key);
}
EXPORT_SYMBOL(poly1305_init);
static inline void poly1305_blocks(struct poly1305_block_state *state,
const u8 *src, unsigned int len)
{
if (IS_ENABLED(CONFIG_CRYPTO_ARCH_HAVE_LIB_POLY1305))
poly1305_blocks_arch(state, src, len, 1);
else
poly1305_blocks_generic(state, src, len, 1);
}
void poly1305_update(struct poly1305_desc_ctx *desc,
const u8 *src, unsigned int nbytes)
{
desc->buflen = BLOCK_HASH_UPDATE(poly1305_blocks, &desc->state,
src, nbytes, POLY1305_BLOCK_SIZE,
desc->buf, desc->buflen);
if (desc->buflen + nbytes >= POLY1305_BLOCK_SIZE) {
unsigned int bulk_len;
if (desc->buflen) {
unsigned int l = POLY1305_BLOCK_SIZE - desc->buflen;
memcpy(&desc->buf[desc->buflen], src, l);
src += l;
nbytes -= l;
poly1305_blocks(&desc->state, desc->buf,
POLY1305_BLOCK_SIZE, 1);
desc->buflen = 0;
}
bulk_len = round_down(nbytes, POLY1305_BLOCK_SIZE);
nbytes %= POLY1305_BLOCK_SIZE;
if (bulk_len) {
poly1305_blocks(&desc->state, src, bulk_len, 1);
src += bulk_len;
}
}
if (nbytes) {
memcpy(&desc->buf[desc->buflen], src, nbytes);
desc->buflen += nbytes;
}
}
EXPORT_SYMBOL(poly1305_update);
@ -54,22 +73,28 @@ void poly1305_final(struct poly1305_desc_ctx *desc, u8 *dst)
desc->buf[desc->buflen++] = 1;
memset(desc->buf + desc->buflen, 0,
POLY1305_BLOCK_SIZE - desc->buflen);
if (IS_ENABLED(CONFIG_CRYPTO_ARCH_HAVE_LIB_POLY1305))
poly1305_blocks_arch(&desc->state, desc->buf,
POLY1305_BLOCK_SIZE, 0);
else
poly1305_blocks_generic(&desc->state, desc->buf,
POLY1305_BLOCK_SIZE, 0);
poly1305_blocks(&desc->state, desc->buf, POLY1305_BLOCK_SIZE,
0);
}
if (IS_ENABLED(CONFIG_CRYPTO_ARCH_HAVE_LIB_POLY1305))
poly1305_emit_arch(&desc->state.h, dst, desc->s);
else
poly1305_emit_generic(&desc->state.h, dst, desc->s);
poly1305_emit(&desc->state.h, dst, desc->s);
*desc = (struct poly1305_desc_ctx){};
}
EXPORT_SYMBOL(poly1305_final);
#ifdef poly1305_mod_init_arch
static int __init poly1305_mod_init(void)
{
poly1305_mod_init_arch();
return 0;
}
subsys_initcall(poly1305_mod_init);
static void __exit poly1305_mod_exit(void)
{
}
module_exit(poly1305_mod_exit);
#endif
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Martin Willi <martin@strongswan.org>");
MODULE_DESCRIPTION("Poly1305 authenticator algorithm, RFC7539");

8
lib/crypto/powerpc/Kconfig
View file

@ -6,11 +6,3 @@ config CRYPTO_CHACHA20_P10
default CRYPTO_LIB_CHACHA
select CRYPTO_LIB_CHACHA_GENERIC
select CRYPTO_ARCH_HAVE_LIB_CHACHA
config CRYPTO_POLY1305_P10
tristate
depends on PPC64 && CPU_LITTLE_ENDIAN && VSX
depends on BROKEN # Needs to be fixed to work in softirq context
default CRYPTO_LIB_POLY1305
select CRYPTO_ARCH_HAVE_LIB_POLY1305
select CRYPTO_LIB_POLY1305_GENERIC

3
lib/crypto/powerpc/Makefile
View file

@ -2,6 +2,3 @@
obj-$(CONFIG_CRYPTO_CHACHA20_P10) += chacha-p10-crypto.o
chacha-p10-crypto-y := chacha-p10-glue.o chacha-p10le-8x.o
obj-$(CONFIG_CRYPTO_POLY1305_P10) += poly1305-p10-crypto.o
poly1305-p10-crypto-y := poly1305-p10-glue.o poly1305-p10le_64.o

30
lib/crypto/powerpc/poly1305-p10-glue.c → lib/crypto/powerpc/poly1305.h
View file

@ -1,15 +1,13 @@
// SPDX-License-Identifier: GPL-2.0
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Poly1305 authenticator algorithm, RFC7539.
*
* Copyright 2023- IBM Corp. All rights reserved.
*/
#include <asm/switch_to.h>
#include <crypto/internal/poly1305.h>
#include <linux/cpufeature.h>
#include <linux/jump_label.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/unaligned.h>
asmlinkage void poly1305_p10le_4blocks(struct poly1305_block_state *state, const u8 *m, u32 mlen);
@ -30,7 +28,7 @@ static void vsx_end(void)
preempt_enable();
}
void poly1305_block_init_arch(struct poly1305_block_state *dctx,
static void poly1305_block_init(struct poly1305_block_state *dctx,
const u8 raw_key[POLY1305_BLOCK_SIZE])
{
if (!static_key_enabled(&have_p10))
@ -40,9 +38,8 @@ void poly1305_block_init_arch(struct poly1305_block_state *dctx,
dctx->core_r.key.r64[0] = get_unaligned_le64(raw_key + 0);
dctx->core_r.key.r64[1] = get_unaligned_le64(raw_key + 8);
}
EXPORT_SYMBOL_GPL(poly1305_block_init_arch);
void poly1305_blocks_arch(struct poly1305_block_state *state, const u8 *src,
static void poly1305_blocks(struct poly1305_block_state *state, const u8 *src,
unsigned int len, u32 padbit)
{
if (!static_key_enabled(&have_p10))
@ -60,31 +57,18 @@ void poly1305_blocks_arch(struct poly1305_block_state *state, const u8 *src,
}
vsx_end();
}
EXPORT_SYMBOL_GPL(poly1305_blocks_arch);
void poly1305_emit_arch(const struct poly1305_state *state,
u8 digest[POLY1305_DIGEST_SIZE],
const u32 nonce[4])
static void poly1305_emit(const struct poly1305_state *state,
u8 digest[POLY1305_DIGEST_SIZE], const u32 nonce[4])
{
if (!static_key_enabled(&have_p10))
return poly1305_emit_generic(state, digest, nonce);
poly1305_emit_64(state, nonce, digest);
}
EXPORT_SYMBOL_GPL(poly1305_emit_arch);
static int __init poly1305_p10_init(void)
#define poly1305_mod_init_arch poly1305_mod_init_arch
static void poly1305_mod_init_arch(void)
{
if (cpu_has_feature(CPU_FTR_ARCH_31))
static_branch_enable(&have_p10);
return 0;
}
subsys_initcall(poly1305_p10_init);
static void __exit poly1305_p10_exit(void)
{
}
module_exit(poly1305_p10_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Danny Tsen <dtsen@linux.ibm.com>");
MODULE_DESCRIPTION("Optimized Poly1305 for P10");

6
lib/crypto/x86/Kconfig
View file

@ -18,9 +18,3 @@ config CRYPTO_CHACHA20_X86_64
default CRYPTO_LIB_CHACHA
select CRYPTO_LIB_CHACHA_GENERIC
select CRYPTO_ARCH_HAVE_LIB_CHACHA
config CRYPTO_POLY1305_X86_64
tristate
depends on 64BIT
default CRYPTO_LIB_POLY1305
select CRYPTO_ARCH_HAVE_LIB_POLY1305

10
lib/crypto/x86/Makefile
View file

@ -5,13 +5,3 @@ libblake2s-x86_64-y := blake2s-core.o blake2s-glue.o
obj-$(CONFIG_CRYPTO_CHACHA20_X86_64) += chacha-x86_64.o
chacha-x86_64-y := chacha-avx2-x86_64.o chacha-ssse3-x86_64.o chacha-avx512vl-x86_64.o chacha_glue.o
obj-$(CONFIG_CRYPTO_POLY1305_X86_64) += poly1305-x86_64.o
poly1305-x86_64-y := poly1305-x86_64-cryptogams.o poly1305_glue.o
targets += poly1305-x86_64-cryptogams.S
quiet_cmd_perlasm = PERLASM $@
cmd_perlasm = $(PERL) $< > $@
$(obj)/%.S: $(src)/%.pl FORCE
$(call if_changed,perlasm)

33
lib/crypto/x86/poly1305-x86_64-cryptogams.pl
View file

@ -118,19 +118,6 @@ sub declare_function() {
}
}
sub declare_typed_function() {
my ($name, $align, $nargs) = @_;
if($kernel) {
$code .= "SYM_TYPED_FUNC_START($name)\n";
$code .= ".L$name:\n";
} else {
$code .= ".globl $name\n";
$code .= ".type $name,\@function,$nargs\n";
$code .= ".align $align\n";
$code .= "$name:\n";
}
}
sub end_function() {
my ($name) = @_;
if($kernel) {
@ -141,7 +128,7 @@ sub end_function() {
}
$code.=<<___ if $kernel;
#include <linux/cfi_types.h>
#include <linux/linkage.h>
___
if ($avx) {
@ -249,14 +236,14 @@ ___
$code.=<<___ if (!$kernel);
.extern OPENSSL_ia32cap_P
.globl poly1305_block_init_arch
.hidden poly1305_block_init_arch
.globl poly1305_init_x86_64
.hidden poly1305_init_x86_64
.globl poly1305_blocks_x86_64
.hidden poly1305_blocks_x86_64
.globl poly1305_emit_x86_64
.hidden poly1305_emit_x86_64
___
&declare_typed_function("poly1305_block_init_arch", 32, 3);
&declare_function("poly1305_init_x86_64", 32, 3);
$code.=<<___;
xor %eax,%eax
mov %rax,0($ctx) # initialize hash value
@ -311,7 +298,7 @@ $code.=<<___;
.Lno_key:
RET
___
&end_function("poly1305_block_init_arch");
&end_function("poly1305_init_x86_64");
&declare_function("poly1305_blocks_x86_64", 32, 4);
$code.=<<___;
@ -4118,9 +4105,9 @@ avx_handler:
.section .pdata
.align 4
.rva .LSEH_begin_poly1305_block_init_arch
.rva .LSEH_end_poly1305_block_init_arch
.rva .LSEH_info_poly1305_block_init_arch
.rva .LSEH_begin_poly1305_init_x86_64
.rva .LSEH_end_poly1305_init_x86_64
.rva .LSEH_info_poly1305_init_x86_64
.rva .LSEH_begin_poly1305_blocks_x86_64
.rva .LSEH_end_poly1305_blocks_x86_64
@ -4168,10 +4155,10 @@ ___
$code.=<<___;
.section .xdata
.align 8
.LSEH_info_poly1305_block_init_arch:
.LSEH_info_poly1305_init_x86_64:
.byte 9,0,0,0
.rva se_handler
.rva .LSEH_begin_poly1305_block_init_arch,.LSEH_begin_poly1305_block_init_arch
.rva .LSEH_begin_poly1305_init_x86_64,.LSEH_begin_poly1305_init_x86_64
.LSEH_info_poly1305_blocks_x86_64:
.byte 9,0,0,0

35
lib/crypto/x86/poly1305_glue.c → lib/crypto/x86/poly1305.h
View file

@ -1,16 +1,13 @@
// SPDX-License-Identifier: GPL-2.0 OR MIT
/* SPDX-License-Identifier: GPL-2.0 OR MIT */
/*
* Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
*/
#include <asm/cpu_device_id.h>
#include <asm/fpu/api.h>
#include <crypto/internal/poly1305.h>
#include <linux/jump_label.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/sizes.h>
#include <linux/unaligned.h>
struct poly1305_arch_internal {
union {
@ -61,10 +58,8 @@ static void convert_to_base2_64(void *ctx)
state->is_base2_26 = 0;
}
asmlinkage void poly1305_block_init_arch(
struct poly1305_block_state *state,
asmlinkage void poly1305_init_x86_64(struct poly1305_block_state *state,
const u8 raw_key[POLY1305_BLOCK_SIZE]);
EXPORT_SYMBOL_GPL(poly1305_block_init_arch);
asmlinkage void poly1305_blocks_x86_64(struct poly1305_arch_internal *ctx,
const u8 *inp,
const size_t len, const u32 padbit);
@ -88,7 +83,13 @@ static __ro_after_init DEFINE_STATIC_KEY_FALSE(poly1305_use_avx);
static __ro_after_init DEFINE_STATIC_KEY_FALSE(poly1305_use_avx2);
static __ro_after_init DEFINE_STATIC_KEY_FALSE(poly1305_use_avx512);
void poly1305_blocks_arch(struct poly1305_block_state *state, const u8 *inp,
static void poly1305_block_init(struct poly1305_block_state *state,
const u8 raw_key[POLY1305_BLOCK_SIZE])
{
poly1305_init_x86_64(state, raw_key);
}
static void poly1305_blocks(struct poly1305_block_state *state, const u8 *inp,
unsigned int len, u32 padbit)
{
struct poly1305_arch_internal *ctx =
@ -129,9 +130,8 @@ void poly1305_blocks_arch(struct poly1305_block_state *state, const u8 *inp,
inp += bytes;
} while (len);
}
EXPORT_SYMBOL_GPL(poly1305_blocks_arch);
void poly1305_emit_arch(const struct poly1305_state *ctx,
static void poly1305_emit(const struct poly1305_state *ctx,
u8 mac[POLY1305_DIGEST_SIZE], const u32 nonce[4])
{
if (!static_branch_likely(&poly1305_use_avx))
@ -139,9 +139,9 @@ void poly1305_emit_arch(const struct poly1305_state *ctx,
else
poly1305_emit_avx(ctx, mac, nonce);
}
EXPORT_SYMBOL_GPL(poly1305_emit_arch);
static int __init poly1305_simd_mod_init(void)
#define poly1305_mod_init_arch poly1305_mod_init_arch
static void poly1305_mod_init_arch(void)
{
if (boot_cpu_has(X86_FEATURE_AVX) &&
cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM, NULL))
@ -155,15 +155,4 @@ static int __init poly1305_simd_mod_init(void)
/* Skylake downclocks unacceptably much when using zmm, but later generations are fast. */
boot_cpu_data.x86_vfm != INTEL_SKYLAKE_X)
static_branch_enable(&poly1305_use_avx512);
return 0;
}
subsys_initcall(poly1305_simd_mod_init);
static void __exit poly1305_simd_mod_exit(void)
{
}
module_exit(poly1305_simd_mod_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Jason A. Donenfeld <Jason@zx2c4.com>");
MODULE_DESCRIPTION("Poly1305 authenticator");