diff options
Diffstat (limited to 'lib/crypto/blake2s-generic.c')
-rw-r--r-- | lib/crypto/blake2s-generic.c | 111 |
1 files changed, 0 insertions, 111 deletions
diff --git a/lib/crypto/blake2s-generic.c b/lib/crypto/blake2s-generic.c deleted file mode 100644 index 9828176a2efe..000000000000 --- a/lib/crypto/blake2s-generic.c +++ /dev/null @@ -1,111 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 OR MIT -/* - * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved. - * - * This is an implementation of the BLAKE2s hash and PRF functions. - * - * Information: https://blake2.net/ - * - */ - -#include <crypto/internal/blake2s.h> -#include <linux/bug.h> -#include <linux/export.h> -#include <linux/init.h> -#include <linux/kernel.h> -#include <linux/string.h> -#include <linux/types.h> -#include <linux/unaligned.h> - -static const u8 blake2s_sigma[10][16] = { - { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 }, - { 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3 }, - { 11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4 }, - { 7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8 }, - { 9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13 }, - { 2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9 }, - { 12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11 }, - { 13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10 }, - { 6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5 }, - { 10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13, 0 }, -}; - -static inline void blake2s_increment_counter(struct blake2s_state *state, - const u32 inc) -{ - state->t[0] += inc; - state->t[1] += (state->t[0] < inc); -} - -void blake2s_compress(struct blake2s_state *state, const u8 *block, - size_t nblocks, const u32 inc) - __weak __alias(blake2s_compress_generic); - -void blake2s_compress_generic(struct blake2s_state *state, const u8 *block, - size_t nblocks, const u32 inc) -{ - u32 m[16]; - u32 v[16]; - int i; - - WARN_ON(IS_ENABLED(DEBUG) && - (nblocks > 1 && inc != BLAKE2S_BLOCK_SIZE)); - - while (nblocks > 0) { - blake2s_increment_counter(state, inc); - memcpy(m, block, BLAKE2S_BLOCK_SIZE); - le32_to_cpu_array(m, ARRAY_SIZE(m)); - memcpy(v, state->h, 32); - v[ 8] = BLAKE2S_IV0; - v[ 9] = BLAKE2S_IV1; - v[10] = BLAKE2S_IV2; - v[11] = BLAKE2S_IV3; - v[12] = BLAKE2S_IV4 ^ state->t[0]; - v[13] = BLAKE2S_IV5 ^ state->t[1]; - v[14] = BLAKE2S_IV6 ^ state->f[0]; - v[15] = BLAKE2S_IV7 ^ state->f[1]; - -#define G(r, i, a, b, c, d) do { \ - a += b + m[blake2s_sigma[r][2 * i + 0]]; \ - d = ror32(d ^ a, 16); \ - c += d; \ - b = ror32(b ^ c, 12); \ - a += b + m[blake2s_sigma[r][2 * i + 1]]; \ - d = ror32(d ^ a, 8); \ - c += d; \ - b = ror32(b ^ c, 7); \ -} while (0) - -#define ROUND(r) do { \ - G(r, 0, v[0], v[ 4], v[ 8], v[12]); \ - G(r, 1, v[1], v[ 5], v[ 9], v[13]); \ - G(r, 2, v[2], v[ 6], v[10], v[14]); \ - G(r, 3, v[3], v[ 7], v[11], v[15]); \ - G(r, 4, v[0], v[ 5], v[10], v[15]); \ - G(r, 5, v[1], v[ 6], v[11], v[12]); \ - G(r, 6, v[2], v[ 7], v[ 8], v[13]); \ - G(r, 7, v[3], v[ 4], v[ 9], v[14]); \ -} while (0) - ROUND(0); - ROUND(1); - ROUND(2); - ROUND(3); - ROUND(4); - ROUND(5); - ROUND(6); - ROUND(7); - ROUND(8); - ROUND(9); - -#undef G -#undef ROUND - - for (i = 0; i < 8; ++i) - state->h[i] ^= v[i] ^ v[i + 8]; - - block += BLAKE2S_BLOCK_SIZE; - --nblocks; - } -} - -EXPORT_SYMBOL(blake2s_compress_generic); |