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✏️ /usr/src/linux-headers-6.8.0-124/include/crypto/utils.h

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/* 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 */

Batal

⬅ include 64 item

Nama	Tipe	Ukuran	Diubah	Perm	Aksi
📁 internal	dir	—	15/06/26 13:45	0755	📂
📄 acompress.h	h	9.3 KB	10/03/24 20:38	0644	✏️ ⬇
📄 aead.h	h	19.5 KB	10/03/24 20:38	0644	✏️ ⬇
📄 aes.h	h	2.5 KB	10/03/24 20:38	0644	✏️ ⬇
📄 akcipher.h	h	15.2 KB	10/03/24 20:38	0644	✏️ ⬇
📄 algapi.h	h	7.6 KB	10/03/24 20:38	0644	✏️ ⬇
📄 arc4.h	h	484 B	10/03/24 20:38	0644	✏️ ⬇
📄 aria.h	h	16.7 KB	10/03/24 20:38	0644	✏️ ⬇
📄 authenc.h	h	635 B	10/03/24 20:38	0644	✏️ ⬇
📄 b128ops.h	h	2.3 KB	10/03/24 20:38	0644	✏️ ⬇
📄 blake2b.h	h	1.6 KB	10/03/24 20:38	0644	✏️ ⬇
📄 blake2s.h	h	2.6 KB	10/03/24 20:38	0644	✏️ ⬇
📄 blowfish.h	h	415 B	10/03/24 20:38	0644	✏️ ⬇
📄 cast5.h	h	590 B	10/03/24 20:38	0644	✏️ ⬇
📄 cast6.h	h	607 B	10/03/24 20:38	0644	✏️ ⬇
📄 cast_common.h	h	232 B	10/03/24 20:38	0644	✏️ ⬇
📄 chacha.h	h	3.3 KB	10/03/24 20:38	0644	✏️ ⬇
📄 chacha20poly1305.h	h	1.7 KB	10/03/24 20:38	0644	✏️ ⬇
📄 cryptd.h	h	2 KB	10/03/24 20:38	0644	✏️ ⬇
📄 ctr.h	h	1.4 KB	10/03/24 20:38	0644	✏️ ⬇
📄 curve25519.h	h	2 KB	10/03/24 20:38	0644	✏️ ⬇
📄 des.h	h	1.7 KB	10/03/24 20:38	0644	✏️ ⬇
📄 dh.h	h	3 KB	10/03/24 20:38	0644	✏️ ⬇
📄 drbg.h	h	9 KB	10/03/24 20:38	0644	✏️ ⬇
📄 ecc_curve.h	h	1.3 KB	10/03/24 20:38	0644	✏️ ⬇
📄 ecdh.h	h	2.4 KB	10/03/24 20:38	0644	✏️ ⬇
📄 engine.h	h	3.7 KB	10/03/24 20:38	0644	✏️ ⬇
📄 gcm.h	h	1.5 KB	10/03/24 20:38	0644	✏️ ⬇
📄 gf128mul.h	h	9.4 KB	10/03/24 20:38	0644	✏️ ⬇
📄 ghash.h	h	388 B	10/03/24 20:38	0644	✏️ ⬇
📄 hash.h	h	33.5 KB	26/05/26 09:55	0644	✏️ ⬇
📄 hash_info.h	h	1023 B	10/03/24 20:38	0644	✏️ ⬇
📄 hmac.h	h	173 B	10/03/24 20:38	0644	✏️ ⬇
📄 if_alg.h	h	6.5 KB	26/05/26 09:55	0644	✏️ ⬇
📄 kdf_sp800108.h	h	2.1 KB	10/03/24 20:38	0644	✏️ ⬇
📄 kpp.h	h	10.9 KB	10/03/24 20:38	0644	✏️ ⬇
📄 md5.h	h	497 B	10/03/24 20:38	0644	✏️ ⬇
📄 nhpoly1305.h	h	2.2 KB	10/03/24 20:38	0644	✏️ ⬇
📄 null.h	h	346 B	10/03/24 20:38	0644	✏️ ⬇
📄 padlock.h	h	438 B	10/03/24 20:38	0644	✏️ ⬇
📄 pcrypt.h	h	821 B	10/03/24 20:38	0644	✏️ ⬇
📄 pkcs7.h	h	1.2 KB	10/03/24 20:38	0644	✏️ ⬇
📄 poly1305.h	h	2.4 KB	10/03/24 20:38	0644	✏️ ⬇
📄 polyval.h	h	445 B	10/03/24 20:38	0644	✏️ ⬇
📄 public_key.h	h	3.6 KB	10/03/24 20:38	0644	✏️ ⬇
📄 rng.h	h	7.7 KB	10/03/24 20:38	0644	✏️ ⬇
📄 scatterwalk.h	h	3.7 KB	26/05/26 09:55	0644	✏️ ⬇
📄 serpent.h	h	696 B	10/03/24 20:38	0644	✏️ ⬇
📄 sha1.h	h	1.2 KB	10/03/24 20:38	0644	✏️ ⬇
📄 sha1_base.h	h	2.5 KB	10/03/24 20:38	0644	✏️ ⬇
📄 sha2.h	h	3.7 KB	10/03/24 20:38	0644	✏️ ⬇
📄 sha256_base.h	h	3.1 KB	26/05/26 09:55	0644	✏️ ⬇
📄 sha3.h	h	879 B	10/03/24 20:38	0644	✏️ ⬇
📄 sha512_base.h	h	3.2 KB	10/03/24 20:38	0644	✏️ ⬇
📄 sig.h	h	4.1 KB	10/03/24 20:38	0644	✏️ ⬇
📄 skcipher.h	h	33.1 KB	10/03/24 20:38	0644	✏️ ⬇
📄 sm2.h	h	745 B	10/03/24 20:38	0644	✏️ ⬇
📄 sm3.h	h	1.6 KB	10/03/24 20:38	0644	✏️ ⬇
📄 sm3_base.h	h	2.5 KB	10/03/24 20:38	0644	✏️ ⬇
📄 sm4.h	h	1.2 KB	10/03/24 20:38	0644	✏️ ⬇
📄 streebog.h	h	949 B	10/03/24 20:38	0644	✏️ ⬇
📄 twofish.h	h	743 B	10/03/24 20:38	0644	✏️ ⬇
📄 utils.h	h	1.9 KB	10/03/24 20:38	0644	✏️ ⬇
📄 xts.h	h	978 B	10/03/24 20:38	0644	✏️ ⬇

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