ACIL FM

Nama	Ukuran	Aksi
acompress.h	1.8 MB	View DL Edit
aead.h	4.13 MB	View DL Edit
akcipher.h	3.31 MB	View DL Edit
blake2b.h	3.06 MB	View DL Edit
blake2s.h	3.43 MB	View DL Edit
chacha.h	969 B	View DL Edit
cipher.h	6.7 MB	View DL Edit
cryptouser.h	453 B	View DL Edit
des.h	3.25 MB	View DL Edit
geniv.h	702 B	View DL Edit
hash.h	6 MB	View DL Edit
kpp.h	6.54 MB	View DL Edit
poly1305.h	1.09 MB	View DL Edit
rng.h	1021 B	View DL Edit
rsa.h	1.6 MB	View DL Edit
scompress.h	3.34 MB	View DL Edit
simd.h	2.24 MB	View DL Edit
skcipher.h	5.29 MB	View DL Edit

Edit file: /usr/src/kernels/5.14.0-427.31.1.el9_4.x86_64/include/crypto/internal/blake2b.h

/* SPDX-License-Identifier: GPL-2.0 OR MIT */
/*
 * Helper functions for BLAKE2b implementations.
 * Keep this in sync with the corresponding BLAKE2s header.
 */

#ifndef _CRYPTO_INTERNAL_BLAKE2B_H
#define _CRYPTO_INTERNAL_BLAKE2B_H

#include <crypto/blake2b.h>
#include <crypto/internal/hash.h>
#include <linux/string.h>

void blake2b_compress_generic(struct blake2b_state *state,
			      const u8 *block, size_t nblocks, u32 inc);

static inline void blake2b_set_lastblock(struct blake2b_state *state)
{
	state->f[0] = -1;
}

typedef void (*blake2b_compress_t)(struct blake2b_state *state,
				   const u8 *block, size_t nblocks, u32 inc);

static inline void __blake2b_update(struct blake2b_state *state,
				    const u8 *in, size_t inlen,
				    blake2b_compress_t compress)
{
	const size_t fill = BLAKE2B_BLOCK_SIZE - state->buflen;

if (unlikely(!inlen))
		return;
	if (inlen > fill) {
		memcpy(state->buf + state->buflen, in, fill);
		(*compress)(state, state->buf, 1, BLAKE2B_BLOCK_SIZE);
		state->buflen = 0;
		in += fill;
		inlen -= fill;
	}
	if (inlen > BLAKE2B_BLOCK_SIZE) {
		const size_t nblocks = DIV_ROUND_UP(inlen, BLAKE2B_BLOCK_SIZE);
		/* Hash one less (full) block than strictly possible */
		(*compress)(state, in, nblocks - 1, BLAKE2B_BLOCK_SIZE);
		in += BLAKE2B_BLOCK_SIZE * (nblocks - 1);
		inlen -= BLAKE2B_BLOCK_SIZE * (nblocks - 1);
	}
	memcpy(state->buf + state->buflen, in, inlen);
	state->buflen += inlen;
}

static inline void __blake2b_final(struct blake2b_state *state, u8 *out,
				   blake2b_compress_t compress)
{
	int i;

blake2b_set_lastblock(state);
	memset(state->buf + state->buflen, 0,
	       BLAKE2B_BLOCK_SIZE - state->buflen); /* Padding */
	(*compress)(state, state->buf, 1, state->buflen);
	for (i = 0; i < ARRAY_SIZE(state->h); i++)
		__cpu_to_le64s(&state->h[i]);
	memcpy(out, state->h, state->outlen);
}

/* Helper functions for shash implementations of BLAKE2b */

struct blake2b_tfm_ctx {
	u8 key[BLAKE2B_KEY_SIZE];
	unsigned int keylen;
};

static inline int crypto_blake2b_setkey(struct crypto_shash *tfm,
					const u8 *key, unsigned int keylen)
{
	struct blake2b_tfm_ctx *tctx = crypto_shash_ctx(tfm);

if (keylen == 0 || keylen > BLAKE2B_KEY_SIZE)
		return -EINVAL;

memcpy(tctx->key, key, keylen);
	tctx->keylen = keylen;

return 0;
}

static inline int crypto_blake2b_init(struct shash_desc *desc)
{
	const struct blake2b_tfm_ctx *tctx = crypto_shash_ctx(desc->tfm);
	struct blake2b_state *state = shash_desc_ctx(desc);
	unsigned int outlen = crypto_shash_digestsize(desc->tfm);

__blake2b_init(state, outlen, tctx->key, tctx->keylen);
	return 0;
}

static inline int crypto_blake2b_update(struct shash_desc *desc,
					const u8 *in, unsigned int inlen,
					blake2b_compress_t compress)
{
	struct blake2b_state *state = shash_desc_ctx(desc);

__blake2b_update(state, in, inlen, compress);
	return 0;
}

static inline int crypto_blake2b_final(struct shash_desc *desc, u8 *out,
				       blake2b_compress_t compress)
{
	struct blake2b_state *state = shash_desc_ctx(desc);

__blake2b_final(state, out, compress);
	return 0;
}

#endif /* _CRYPTO_INTERNAL_BLAKE2B_H */

Batal