Gecko [ oric.aiou.edu.pk ]

Name	Size	Permission
internal	[ DIR ]	drwxr-xr-x
acompress.h	8.01 KB	-rw-r--r--
aead.h	17.58 KB	-rw-r--r--
aes.h	2.5 KB	-rw-r--r--
akcipher.h	12.91 KB	-rw-r--r--
algapi.h	11.12 KB	-rw-r--r--
arc4.h	484 B	-rw-r--r--
asym_tpm_subtype.h	521 B	-rw-r--r--
authenc.h	635 B	-rw-r--r--
b128ops.h	2.41 KB	-rw-r--r--
blake2s.h	2.37 KB	-rw-r--r--
blowfish.h	415 B	-rw-r--r--
cast5.h	590 B	-rw-r--r--
cast6.h	624 B	-rw-r--r--
cast_common.h	232 B	-rw-r--r--
cbc.h	3.29 KB	-rw-r--r--
chacha.h	2.08 KB	-rw-r--r--
cryptd.h	2 KB	-rw-r--r--
ctr.h	1.42 KB	-rw-r--r--
des.h	1.68 KB	-rw-r--r--
dh.h	2.51 KB	-rw-r--r--
drbg.h	8.99 KB	-rw-r--r--
ecdh.h	2.46 KB	-rw-r--r--
engine.h	3.9 KB	-rw-r--r--
gcm.h	867 B	-rw-r--r--
gf128mul.h	9.41 KB	-rw-r--r--
ghash.h	388 B	-rw-r--r--
hash.h	32.09 KB	-rw-r--r--
hash_info.h	972 B	-rw-r--r--
hmac.h	173 B	-rw-r--r--
if_alg.h	6.59 KB	-rw-r--r--
kpp.h	9.9 KB	-rw-r--r--
md5.h	497 B	-rw-r--r--
nhpoly1305.h	2.17 KB	-rw-r--r--
null.h	346 B	-rw-r--r--
padlock.h	438 B	-rw-r--r--
pcrypt.h	815 B	-rw-r--r--
pkcs7.h	1.15 KB	-rw-r--r--
poly1305.h	1.72 KB	-rw-r--r--
public_key.h	2.34 KB	-rw-r--r--
rng.h	6.59 KB	-rw-r--r--
scatterwalk.h	3.14 KB	-rw-r--r--
serpent.h	696 B	-rw-r--r--
sha.h	4.32 KB	-rw-r--r--
sha1_base.h	2.42 KB	-rw-r--r--
sha256_base.h	2.52 KB	-rw-r--r--
sha3.h	879 B	-rw-r--r--
sha512_base.h	3.15 KB	-rw-r--r--
skcipher.h	20.98 KB	-rw-r--r--
sm3.h	833 B	-rw-r--r--
sm3_base.h	2.51 KB	-rw-r--r--
sm4.h	754 B	-rw-r--r--
streebog.h	949 B	-rw-r--r--
twofish.h	755 B	-rw-r--r--
xts.h	1.35 KB	-rw-r--r--

Code Editor : sm3_base.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * sm3_base.h - core logic for SM3 implementations
 *
 * Copyright (C) 2017 ARM Limited or its affiliates.
 * Written by Gilad Ben-Yossef <gilad@benyossef.com>
 */

#ifndef _CRYPTO_SM3_BASE_H
#define _CRYPTO_SM3_BASE_H

#include <crypto/internal/hash.h>
#include <crypto/sm3.h>
#include <linux/crypto.h>
#include <linux/module.h>
#include <asm/unaligned.h>

typedef void (sm3_block_fn)(struct sm3_state *sst, u8 const *src, int blocks);

static inline int sm3_base_init(struct shash_desc *desc)
{
	struct sm3_state *sctx = shash_desc_ctx(desc);

sctx->state[0] = SM3_IVA;
	sctx->state[1] = SM3_IVB;
	sctx->state[2] = SM3_IVC;
	sctx->state[3] = SM3_IVD;
	sctx->state[4] = SM3_IVE;
	sctx->state[5] = SM3_IVF;
	sctx->state[6] = SM3_IVG;
	sctx->state[7] = SM3_IVH;
	sctx->count = 0;

return 0;
}

static inline int sm3_base_do_update(struct shash_desc *desc,
				      const u8 *data,
				      unsigned int len,
				      sm3_block_fn *block_fn)
{
	struct sm3_state *sctx = shash_desc_ctx(desc);
	unsigned int partial = sctx->count % SM3_BLOCK_SIZE;

sctx->count += len;

if (unlikely((partial + len) >= SM3_BLOCK_SIZE)) {
		int blocks;

if (partial) {
			int p = SM3_BLOCK_SIZE - partial;

memcpy(sctx->buffer + partial, data, p);
			data += p;
			len -= p;

block_fn(sctx, sctx->buffer, 1);
		}

blocks = len / SM3_BLOCK_SIZE;
		len %= SM3_BLOCK_SIZE;

if (blocks) {
			block_fn(sctx, data, blocks);
			data += blocks * SM3_BLOCK_SIZE;
		}
		partial = 0;
	}
	if (len)
		memcpy(sctx->buffer + partial, data, len);

return 0;
}

static inline int sm3_base_do_finalize(struct shash_desc *desc,
					sm3_block_fn *block_fn)
{
	const int bit_offset = SM3_BLOCK_SIZE - sizeof(__be64);
	struct sm3_state *sctx = shash_desc_ctx(desc);
	__be64 *bits = (__be64 *)(sctx->buffer + bit_offset);
	unsigned int partial = sctx->count % SM3_BLOCK_SIZE;

sctx->buffer[partial++] = 0x80;
	if (partial > bit_offset) {
		memset(sctx->buffer + partial, 0x0, SM3_BLOCK_SIZE - partial);
		partial = 0;

block_fn(sctx, sctx->buffer, 1);
	}

memset(sctx->buffer + partial, 0x0, bit_offset - partial);
	*bits = cpu_to_be64(sctx->count << 3);
	block_fn(sctx, sctx->buffer, 1);

return 0;
}

static inline int sm3_base_finish(struct shash_desc *desc, u8 *out)
{
	struct sm3_state *sctx = shash_desc_ctx(desc);
	__be32 *digest = (__be32 *)out;
	int i;

for (i = 0; i < SM3_DIGEST_SIZE / sizeof(__be32); i++)
		put_unaligned_be32(sctx->state[i], digest++);

*sctx = (struct sm3_state){};
	return 0;
}

#endif /* _CRYPTO_SM3_BASE_H */

${this.title}

Code Editor : sm3_base.h