crypto: import zinc

1 files changed, 0 insertions, 289 deletions

diff --git a/src/crypto/blake2s.c b/src/crypto/blake2s.c
deleted file mode 100644
index 322a682..0000000
--- a/src/crypto/blake2s.c
+++ /dev/null
@@ -1,289 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0
- *
- * Copyright (C) 2015-2018 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
- *
- * Original author: Samuel Neves <sneves@dei.uc.pt>
- */
-
-#include "blake2s.h"
-
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/kernel.h>
-#include <linux/bug.h>
-#include <asm/unaligned.h>
-
-typedef union {
-	struct {
-		u8 digest_length;
-		u8 key_length;
-		u8 fanout;
-		u8 depth;
-		u32 leaf_length;
-		u32 node_offset;
-		u16 xof_length;
-		u8 node_depth;
-		u8 inner_length;
-		u8 salt[8];
-		u8 personal[8];
-	};
-	__le32 words[8];
-} __packed blake2s_param;
-
-static const u32 blake2s_iv[8] = {
-	0x6A09E667UL, 0xBB67AE85UL, 0x3C6EF372UL, 0xA54FF53AUL,
-	0x510E527FUL, 0x9B05688CUL, 0x1F83D9ABUL, 0x5BE0CD19UL
-};
-
-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_set_lastblock(struct blake2s_state *state)
-{
-	if (state->last_node)
-		state->f[1] = -1;
-	state->f[0] = -1;
-}
-
-static inline void blake2s_increment_counter(struct blake2s_state *state, const u32 inc)
-{
-	state->t[0] += inc;
-	state->t[1] += (state->t[0] < inc);
-}
-
-static inline void blake2s_init_param(struct blake2s_state *state, const blake2s_param *param)
-{
-	int i;
-
-	memset(state, 0, sizeof(struct blake2s_state));
-	for (i = 0; i < 8; ++i)
-		state->h[i] = blake2s_iv[i] ^ le32_to_cpu(param->words[i]);
-}
-
-void blake2s_init(struct blake2s_state *state, const size_t outlen)
-{
-	blake2s_param param __aligned(__alignof__(u32)) = {
-		.digest_length = outlen,
-		.fanout = 1,
-		.depth = 1
-	};
-
-#ifdef DEBUG
-	BUG_ON(!outlen || outlen > BLAKE2S_OUTBYTES);
-#endif
-	blake2s_init_param(state, &param);
-}
-
-void blake2s_init_key(struct blake2s_state *state, const size_t outlen, const void *key, const size_t keylen)
-{
-	blake2s_param param = {
-		.digest_length = outlen,
-		.key_length = keylen,
-		.fanout = 1,
-		.depth = 1
-	};
-	u8 block[BLAKE2S_BLOCKBYTES] = { 0 };
-
-#ifdef DEBUG
-	BUG_ON(!outlen || outlen > BLAKE2S_OUTBYTES || !key || !keylen || keylen > BLAKE2S_KEYBYTES);
-#endif
-	blake2s_init_param(state, &param);
-	memcpy(block, key, keylen);
-	blake2s_update(state, block, BLAKE2S_BLOCKBYTES);
-	memzero_explicit(block, BLAKE2S_BLOCKBYTES);
-}
-
-#ifdef CONFIG_X86_64
-#include <asm/cpufeature.h>
-#include <asm/processor.h>
-#include <asm/fpu/api.h>
-#include <asm/simd.h>
-static bool blake2s_use_avx __ro_after_init;
-static bool blake2s_use_avx512 __ro_after_init;
-void __init blake2s_fpu_init(void)
-{
-#ifndef CONFIG_UML
-	blake2s_use_avx = boot_cpu_has(X86_FEATURE_AVX) && cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM, NULL);
-#ifndef COMPAT_CANNOT_USE_AVX512
-	blake2s_use_avx512 = boot_cpu_has(X86_FEATURE_AVX) && boot_cpu_has(X86_FEATURE_AVX2) && boot_cpu_has(X86_FEATURE_AVX512F) && boot_cpu_has(X86_FEATURE_AVX512VL) && cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM | XFEATURE_MASK_AVX512, NULL);
-#endif
-#endif
-}
-#ifdef CONFIG_AS_AVX
-asmlinkage void blake2s_compress_avx(struct blake2s_state *state, const u8 *block, const size_t nblocks, const u32 inc);
-#endif
-#ifdef CONFIG_AS_AVX512
-asmlinkage void blake2s_compress_avx512(struct blake2s_state *state, const u8 *block, const size_t nblocks, const u32 inc);
-#endif
-#else
-void __init blake2s_fpu_init(void) { }
-#endif
-
-static inline void blake2s_compress(struct blake2s_state *state, const u8 *block, size_t nblocks, const u32 inc)
-{
-	u32 m[16];
-	u32 v[16];
-	int i;
-
-#ifdef DEBUG
-	BUG_ON(nblocks > 1 && inc != BLAKE2S_BLOCKBYTES);
-#endif
-
-#ifdef CONFIG_X86_64
-#ifdef CONFIG_AS_AVX512
-	if (blake2s_use_avx512 && irq_fpu_usable()) {
-		kernel_fpu_begin();
-		blake2s_compress_avx512(state, block, nblocks, inc);
-		kernel_fpu_end();
-		return;
-	}
-#endif
-#ifdef CONFIG_AS_AVX
-	if (blake2s_use_avx && irq_fpu_usable()) {
-		kernel_fpu_begin();
-		blake2s_compress_avx(state, block, nblocks, inc);
-		kernel_fpu_end();
-		return;
-	}
-#endif
-#endif
-
-	while (nblocks > 0) {
-		blake2s_increment_counter(state, inc);
-
-#ifdef __LITTLE_ENDIAN
-		memcpy(m, block, BLAKE2S_BLOCKBYTES);
-#else
-		for (i = 0; i < 16; ++i)
-			m[i] = get_unaligned_le32(block + i * sizeof(m[i]));
-#endif
-		memcpy(v, state->h, 32);
-		v[ 8] = blake2s_iv[0];
-		v[ 9] = blake2s_iv[1];
-		v[10] = blake2s_iv[2];
-		v[11] = blake2s_iv[3];
-		v[12] = blake2s_iv[4] ^ state->t[0];
-		v[13] = blake2s_iv[5] ^ state->t[1];
-		v[14] = blake2s_iv[6] ^ state->f[0];
-		v[15] = blake2s_iv[7] ^ 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_BLOCKBYTES;
-		--nblocks;
-	}
-}
-
-void blake2s_update(struct blake2s_state *state, const u8 *in, size_t inlen)
-{
-	const size_t fill = BLAKE2S_BLOCKBYTES - state->buflen;
-
-	if (unlikely(!inlen))
-		return;
-	if (inlen > fill) {
-		memcpy(state->buf + state->buflen, in, fill);
-		blake2s_compress(state, state->buf, 1, BLAKE2S_BLOCKBYTES);
-		state->buflen = 0;
-		in += fill;
-		inlen -= fill;
-	}
-	if (inlen > BLAKE2S_BLOCKBYTES) {
-		const size_t nblocks = (inlen + BLAKE2S_BLOCKBYTES - 1) / BLAKE2S_BLOCKBYTES;
-		/* Hash one less (full) block than strictly possible */
-		blake2s_compress(state, in, nblocks - 1, BLAKE2S_BLOCKBYTES);
-		in += BLAKE2S_BLOCKBYTES * (nblocks - 1);
-		inlen -= BLAKE2S_BLOCKBYTES * (nblocks - 1);
-	}
-	memcpy(state->buf + state->buflen, in, inlen);
-	state->buflen += inlen;
-}
-
-void __blake2s_final(struct blake2s_state *state)
-{
-	blake2s_set_lastblock(state);
-	memset(state->buf + state->buflen, 0, BLAKE2S_BLOCKBYTES - state->buflen); /* Padding */
-	blake2s_compress(state, state->buf, 1, state->buflen);
-}
-
-void blake2s_hmac(u8 *out, const u8 *in, const u8 *key, const size_t outlen, const size_t inlen, const size_t keylen)
-{
-	struct blake2s_state state;
-	u8 x_key[BLAKE2S_BLOCKBYTES] __aligned(__alignof__(u32)) = { 0 };
-	u8 i_hash[BLAKE2S_OUTBYTES] __aligned(__alignof__(u32));
-	int i;
-
-	if (keylen > BLAKE2S_BLOCKBYTES) {
-		blake2s_init(&state, BLAKE2S_OUTBYTES);
-		blake2s_update(&state, key, keylen);
-		blake2s_final(&state, x_key, BLAKE2S_OUTBYTES);
-	} else
-		memcpy(x_key, key, keylen);
-
-	for (i = 0; i < BLAKE2S_BLOCKBYTES; ++i)
-		x_key[i] ^= 0x36;
-
-	blake2s_init(&state, BLAKE2S_OUTBYTES);
-	blake2s_update(&state, x_key, BLAKE2S_BLOCKBYTES);
-	blake2s_update(&state, in, inlen);
-	blake2s_final(&state, i_hash, BLAKE2S_OUTBYTES);
-
-	for (i = 0; i < BLAKE2S_BLOCKBYTES; ++i)
-		x_key[i] ^= 0x5c ^ 0x36;
-
-	blake2s_init(&state, BLAKE2S_OUTBYTES);
-	blake2s_update(&state, x_key, BLAKE2S_BLOCKBYTES);
-	blake2s_update(&state, i_hash, BLAKE2S_OUTBYTES);
-	blake2s_final(&state, i_hash, BLAKE2S_OUTBYTES);
-
-	memcpy(out, i_hash, outlen);
-	memzero_explicit(x_key, BLAKE2S_BLOCKBYTES);
-	memzero_explicit(i_hash, BLAKE2S_OUTBYTES);
-}
-
-#include "../selftest/blake2s.h"