mirror of
https://github.com/torvalds/linux.git
synced 2024-11-27 06:31:52 +00:00
66d7fb94e4
The C implementation was originally based on Samuel Neves' public domain reference implementation but has since been heavily modified for the kernel. We're able to do compile-time optimizations by moving some scaffolding around the final function into the header file. Information: https://blake2.net/ Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: Samuel Neves <sneves@dei.uc.pt> Co-developed-by: Samuel Neves <sneves@dei.uc.pt> [ardb: - move from lib/zinc to lib/crypto - remove simd handling - rewrote selftest for better coverage - use fixed digest length for blake2s_hmac() and rename to blake2s256_hmac() ] Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
107 lines
2.4 KiB
C
107 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR MIT */
|
|
/*
|
|
* Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
|
|
*/
|
|
|
|
#ifndef BLAKE2S_H
|
|
#define BLAKE2S_H
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/string.h>
|
|
|
|
#include <asm/bug.h>
|
|
|
|
enum blake2s_lengths {
|
|
BLAKE2S_BLOCK_SIZE = 64,
|
|
BLAKE2S_HASH_SIZE = 32,
|
|
BLAKE2S_KEY_SIZE = 32,
|
|
|
|
BLAKE2S_128_HASH_SIZE = 16,
|
|
BLAKE2S_160_HASH_SIZE = 20,
|
|
BLAKE2S_224_HASH_SIZE = 28,
|
|
BLAKE2S_256_HASH_SIZE = 32,
|
|
};
|
|
|
|
struct blake2s_state {
|
|
u32 h[8];
|
|
u32 t[2];
|
|
u32 f[2];
|
|
u8 buf[BLAKE2S_BLOCK_SIZE];
|
|
unsigned int buflen;
|
|
unsigned int outlen;
|
|
};
|
|
|
|
enum blake2s_iv {
|
|
BLAKE2S_IV0 = 0x6A09E667UL,
|
|
BLAKE2S_IV1 = 0xBB67AE85UL,
|
|
BLAKE2S_IV2 = 0x3C6EF372UL,
|
|
BLAKE2S_IV3 = 0xA54FF53AUL,
|
|
BLAKE2S_IV4 = 0x510E527FUL,
|
|
BLAKE2S_IV5 = 0x9B05688CUL,
|
|
BLAKE2S_IV6 = 0x1F83D9ABUL,
|
|
BLAKE2S_IV7 = 0x5BE0CD19UL,
|
|
};
|
|
|
|
void blake2s_update(struct blake2s_state *state, const u8 *in, size_t inlen);
|
|
void blake2s_final(struct blake2s_state *state, u8 *out);
|
|
|
|
static inline void blake2s_init_param(struct blake2s_state *state,
|
|
const u32 param)
|
|
{
|
|
*state = (struct blake2s_state){{
|
|
BLAKE2S_IV0 ^ param,
|
|
BLAKE2S_IV1,
|
|
BLAKE2S_IV2,
|
|
BLAKE2S_IV3,
|
|
BLAKE2S_IV4,
|
|
BLAKE2S_IV5,
|
|
BLAKE2S_IV6,
|
|
BLAKE2S_IV7,
|
|
}};
|
|
}
|
|
|
|
static inline void blake2s_init(struct blake2s_state *state,
|
|
const size_t outlen)
|
|
{
|
|
blake2s_init_param(state, 0x01010000 | outlen);
|
|
state->outlen = outlen;
|
|
}
|
|
|
|
static inline void blake2s_init_key(struct blake2s_state *state,
|
|
const size_t outlen, const void *key,
|
|
const size_t keylen)
|
|
{
|
|
WARN_ON(IS_ENABLED(DEBUG) && (!outlen || outlen > BLAKE2S_HASH_SIZE ||
|
|
!key || !keylen || keylen > BLAKE2S_KEY_SIZE));
|
|
|
|
blake2s_init_param(state, 0x01010000 | keylen << 8 | outlen);
|
|
memcpy(state->buf, key, keylen);
|
|
state->buflen = BLAKE2S_BLOCK_SIZE;
|
|
state->outlen = outlen;
|
|
}
|
|
|
|
static inline void blake2s(u8 *out, const u8 *in, const u8 *key,
|
|
const size_t outlen, const size_t inlen,
|
|
const size_t keylen)
|
|
{
|
|
struct blake2s_state state;
|
|
|
|
WARN_ON(IS_ENABLED(DEBUG) && ((!in && inlen > 0) || !out || !outlen ||
|
|
outlen > BLAKE2S_HASH_SIZE || keylen > BLAKE2S_KEY_SIZE ||
|
|
(!key && keylen)));
|
|
|
|
if (keylen)
|
|
blake2s_init_key(&state, outlen, key, keylen);
|
|
else
|
|
blake2s_init(&state, outlen);
|
|
|
|
blake2s_update(&state, in, inlen);
|
|
blake2s_final(&state, out);
|
|
}
|
|
|
|
void blake2s256_hmac(u8 *out, const u8 *in, const u8 *key, const size_t inlen,
|
|
const size_t keylen);
|
|
|
|
#endif /* BLAKE2S_H */
|