diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/crypto/algapi.h | 63 | ||||
| -rw-r--r-- | include/crypto/utils.h | 73 |
2 files changed, 74 insertions, 62 deletions
diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h index e28957993b56..bbf8c43c3320 100644 --- a/include/crypto/algapi.h +++ b/include/crypto/algapi.h @@ -7,15 +7,12 @@ #ifndef _CRYPTO_ALGAPI_H #define _CRYPTO_ALGAPI_H +#include <crypto/utils.h> #include <linux/align.h> #include <linux/cache.h> #include <linux/crypto.h> -#include <linux/kconfig.h> -#include <linux/list.h> #include <linux/types.h> -#include <asm/unaligned.h> - /* * Maximum values for blocksize and alignmask, used to allocate * static buffers that are big enough for any combination of @@ -172,47 +169,6 @@ static inline unsigned int crypto_queue_len(struct crypto_queue *queue) } void crypto_inc(u8 *a, unsigned int size); -void __crypto_xor(u8 *dst, const u8 *src1, const u8 *src2, unsigned int size); - -static inline void crypto_xor(u8 *dst, const u8 *src, unsigned int size) -{ - if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && - __builtin_constant_p(size) && - (size % sizeof(unsigned long)) == 0) { - unsigned long *d = (unsigned long *)dst; - unsigned long *s = (unsigned long *)src; - unsigned long l; - - while (size > 0) { - l = get_unaligned(d) ^ get_unaligned(s++); - put_unaligned(l, d++); - size -= sizeof(unsigned long); - } - } else { - __crypto_xor(dst, dst, src, size); - } -} - -static inline void crypto_xor_cpy(u8 *dst, const u8 *src1, const u8 *src2, - unsigned int size) -{ - if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && - __builtin_constant_p(size) && - (size % sizeof(unsigned long)) == 0) { - unsigned long *d = (unsigned long *)dst; - unsigned long *s1 = (unsigned long *)src1; - unsigned long *s2 = (unsigned long *)src2; - unsigned long l; - - while (size > 0) { - l = get_unaligned(s1++) ^ get_unaligned(s2++); - put_unaligned(l, d++); - size -= sizeof(unsigned long); - } - } else { - __crypto_xor(dst, src1, src2, size); - } -} static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm) { @@ -291,23 +247,6 @@ static inline u32 crypto_algt_inherited_mask(struct crypto_attr_type *algt) return crypto_requires_off(algt, CRYPTO_ALG_INHERITED_FLAGS); } -noinline unsigned long __crypto_memneq(const void *a, const void *b, size_t size); - -/** - * crypto_memneq - Compare two areas of memory without leaking - * timing information. - * - * @a: One area of memory - * @b: Another area of memory - * @size: The size of the area. - * - * Returns 0 when data is equal, 1 otherwise. - */ -static inline int crypto_memneq(const void *a, const void *b, size_t size) -{ - return __crypto_memneq(a, b, size) != 0UL ? 1 : 0; -} - int crypto_register_notifier(struct notifier_block *nb); int crypto_unregister_notifier(struct notifier_block *nb); diff --git a/include/crypto/utils.h b/include/crypto/utils.h new file mode 100644 index 000000000000..acbb917a00c6 --- /dev/null +++ b/include/crypto/utils.h @@ -0,0 +1,73 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Cryptographic utilities + * + * Copyright (c) 2023 Herbert Xu <herbert@gondor.apana.org.au> + */ +#ifndef _CRYPTO_UTILS_H +#define _CRYPTO_UTILS_H + +#include <asm/unaligned.h> +#include <linux/compiler_attributes.h> +#include <linux/types.h> + +void __crypto_xor(u8 *dst, const u8 *src1, const u8 *src2, unsigned int size); + +static inline void crypto_xor(u8 *dst, const u8 *src, unsigned int size) +{ + if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && + __builtin_constant_p(size) && + (size % sizeof(unsigned long)) == 0) { + unsigned long *d = (unsigned long *)dst; + unsigned long *s = (unsigned long *)src; + unsigned long l; + + while (size > 0) { + l = get_unaligned(d) ^ get_unaligned(s++); + put_unaligned(l, d++); + size -= sizeof(unsigned long); + } + } else { + __crypto_xor(dst, dst, src, size); + } +} + +static inline void crypto_xor_cpy(u8 *dst, const u8 *src1, const u8 *src2, + unsigned int size) +{ + if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && + __builtin_constant_p(size) && + (size % sizeof(unsigned long)) == 0) { + unsigned long *d = (unsigned long *)dst; + unsigned long *s1 = (unsigned long *)src1; + unsigned long *s2 = (unsigned long *)src2; + unsigned long l; + + while (size > 0) { + l = get_unaligned(s1++) ^ get_unaligned(s2++); + put_unaligned(l, d++); + size -= sizeof(unsigned long); + } + } else { + __crypto_xor(dst, src1, src2, size); + } +} + +noinline unsigned long __crypto_memneq(const void *a, const void *b, size_t size); + +/** + * crypto_memneq - Compare two areas of memory without leaking + * timing information. + * + * @a: One area of memory + * @b: Another area of memory + * @size: The size of the area. + * + * Returns 0 when data is equal, 1 otherwise. + */ +static inline int crypto_memneq(const void *a, const void *b, size_t size) +{ + return __crypto_memneq(a, b, size) != 0UL ? 1 : 0; +} + +#endif /* _CRYPTO_UTILS_H */ |