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Diffstat (limited to 'sys/dev/if_wg/module/crypto/zinc/chacha20/chacha20.c')
-rw-r--r--sys/dev/if_wg/module/crypto/zinc/chacha20/chacha20.c238
1 files changed, 0 insertions, 238 deletions
diff --git a/sys/dev/if_wg/module/crypto/zinc/chacha20/chacha20.c b/sys/dev/if_wg/module/crypto/zinc/chacha20/chacha20.c
deleted file mode 100644
index b78f19975b1d..000000000000
--- a/sys/dev/if_wg/module/crypto/zinc/chacha20/chacha20.c
+++ /dev/null
@@ -1,238 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0 OR MIT
-/*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
- *
- * Implementation of the ChaCha20 stream cipher.
- *
- * Information: https://cr.yp.to/chacha.html
- */
-
-#include <zinc/chacha20.h>
-#include "../selftest/run.h"
-#define IS_ENABLED_CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS 1
-
-#define IS_ENABLED_CONFIG_64BIT (sizeof(void*) == 8)
-
-void __crypto_xor(u8 *dst, const u8 *src1, const u8 *src2, unsigned int len)
-{
- int relalign = 0;
-
- if (!IS_ENABLED_CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) {
- int size = sizeof(unsigned long);
- int d = (((unsigned long)dst ^ (unsigned long)src1) |
- ((unsigned long)dst ^ (unsigned long)src2)) &
- (size - 1);
-
- relalign = d ? 1 << ffs(d) : size;
-
- /*
- * If we care about alignment, process as many bytes as
- * needed to advance dst and src to values whose alignments
- * equal their relative alignment. This will allow us to
- * process the remainder of the input using optimal strides.
- */
- while (((unsigned long)dst & (relalign - 1)) && len > 0) {
- *dst++ = *src1++ ^ *src2++;
- len--;
- }
- }
-
- while (IS_ENABLED(CONFIG_64BIT) && len >= 8 && !(relalign & 7)) {
- *(u64 *)dst = *(const u64 *)src1 ^ *(const u64 *)src2;
- dst += 8;
- src1 += 8;
- src2 += 8;
- len -= 8;
- }
-
- while (len >= 4 && !(relalign & 3)) {
- *(u32 *)dst = *(const u32 *)src1 ^ *(const u32 *)src2;
- dst += 4;
- src1 += 4;
- src2 += 4;
- len -= 4;
- }
-
- while (len >= 2 && !(relalign & 1)) {
- *(u16 *)dst = *(const u16 *)src1 ^ *(const u16 *)src2;
- dst += 2;
- src1 += 2;
- src2 += 2;
- len -= 2;
- }
-
- while (len--)
- *dst++ = *src1++ ^ *src2++;
-}
-
-#if defined(CONFIG_ZINC_ARCH_X86_64)
-#include "chacha20-x86_64-glue.c"
-#elif defined(CONFIG_ZINC_ARCH_ARM) || defined(CONFIG_ZINC_ARCH_ARM64)
-#include "chacha20-arm-glue.c"
-#elif defined(CONFIG_ZINC_ARCH_MIPS)
-#include "chacha20-mips-glue.c"
-#else
-static bool *const chacha20_nobs[] __initconst = { };
-static void __init chacha20_fpu_init(void)
-{
-}
-static inline bool chacha20_arch(struct chacha20_ctx *ctx, u8 *dst,
- const u8 *src, size_t len,
- simd_context_t *simd_context)
-{
- return false;
-}
-static inline bool hchacha20_arch(u32 derived_key[CHACHA20_KEY_WORDS],
- const u8 nonce[HCHACHA20_NONCE_SIZE],
- const u8 key[HCHACHA20_KEY_SIZE],
- simd_context_t *simd_context)
-{
- return false;
-}
-#endif
-
-#define QUARTER_ROUND(x, a, b, c, d) ( \
- x[a] += x[b], \
- x[d] = rol32((x[d] ^ x[a]), 16), \
- x[c] += x[d], \
- x[b] = rol32((x[b] ^ x[c]), 12), \
- x[a] += x[b], \
- x[d] = rol32((x[d] ^ x[a]), 8), \
- x[c] += x[d], \
- x[b] = rol32((x[b] ^ x[c]), 7) \
-)
-
-#define C(i, j) (i * 4 + j)
-
-#define DOUBLE_ROUND(x) ( \
- /* Column Round */ \
- QUARTER_ROUND(x, C(0, 0), C(1, 0), C(2, 0), C(3, 0)), \
- QUARTER_ROUND(x, C(0, 1), C(1, 1), C(2, 1), C(3, 1)), \
- QUARTER_ROUND(x, C(0, 2), C(1, 2), C(2, 2), C(3, 2)), \
- QUARTER_ROUND(x, C(0, 3), C(1, 3), C(2, 3), C(3, 3)), \
- /* Diagonal Round */ \
- QUARTER_ROUND(x, C(0, 0), C(1, 1), C(2, 2), C(3, 3)), \
- QUARTER_ROUND(x, C(0, 1), C(1, 2), C(2, 3), C(3, 0)), \
- QUARTER_ROUND(x, C(0, 2), C(1, 3), C(2, 0), C(3, 1)), \
- QUARTER_ROUND(x, C(0, 3), C(1, 0), C(2, 1), C(3, 2)) \
-)
-
-#define TWENTY_ROUNDS(x) ( \
- DOUBLE_ROUND(x), \
- DOUBLE_ROUND(x), \
- DOUBLE_ROUND(x), \
- DOUBLE_ROUND(x), \
- DOUBLE_ROUND(x), \
- DOUBLE_ROUND(x), \
- DOUBLE_ROUND(x), \
- DOUBLE_ROUND(x), \
- DOUBLE_ROUND(x), \
- DOUBLE_ROUND(x) \
-)
-
-static void chacha20_block_generic(struct chacha20_ctx *ctx, __le32 *stream)
-{
- u32 x[CHACHA20_BLOCK_WORDS];
- int i;
-
- for (i = 0; i < ARRAY_SIZE(x); ++i)
- x[i] = ctx->state[i];
-
- TWENTY_ROUNDS(x);
-
- for (i = 0; i < ARRAY_SIZE(x); ++i)
- stream[i] = cpu_to_le32(x[i] + ctx->state[i]);
-
- ctx->counter[0] += 1;
-}
-
-static void chacha20_generic(struct chacha20_ctx *ctx, u8 *out, const u8 *in,
- u32 len)
-{
- __le32 buf[CHACHA20_BLOCK_WORDS];
-
- while (len >= CHACHA20_BLOCK_SIZE) {
- chacha20_block_generic(ctx, buf);
- crypto_xor_cpy(out, in, (u8 *)buf, CHACHA20_BLOCK_SIZE);
- len -= CHACHA20_BLOCK_SIZE;
- out += CHACHA20_BLOCK_SIZE;
- in += CHACHA20_BLOCK_SIZE;
- }
- if (len) {
- chacha20_block_generic(ctx, buf);
- crypto_xor_cpy(out, in, (u8 *)buf, len);
- }
-}
-
-void chacha20(struct chacha20_ctx *ctx, u8 *dst, const u8 *src, u32 len,
- simd_context_t *simd_context)
-{
- if (!chacha20_arch(ctx, dst, src, len, simd_context))
- chacha20_generic(ctx, dst, src, len);
-}
-EXPORT_SYMBOL(chacha20);
-
-static void hchacha20_generic(u32 derived_key[CHACHA20_KEY_WORDS],
- const u8 nonce[HCHACHA20_NONCE_SIZE],
- const u8 key[HCHACHA20_KEY_SIZE])
-{
- u32 x[] = { CHACHA20_CONSTANT_EXPA,
- CHACHA20_CONSTANT_ND_3,
- CHACHA20_CONSTANT_2_BY,
- CHACHA20_CONSTANT_TE_K,
- get_unaligned_le32(key + 0),
- get_unaligned_le32(key + 4),
- get_unaligned_le32(key + 8),
- get_unaligned_le32(key + 12),
- get_unaligned_le32(key + 16),
- get_unaligned_le32(key + 20),
- get_unaligned_le32(key + 24),
- get_unaligned_le32(key + 28),
- get_unaligned_le32(nonce + 0),
- get_unaligned_le32(nonce + 4),
- get_unaligned_le32(nonce + 8),
- get_unaligned_le32(nonce + 12)
- };
-
- TWENTY_ROUNDS(x);
-
- memcpy(derived_key + 0, x + 0, sizeof(u32) * 4);
- memcpy(derived_key + 4, x + 12, sizeof(u32) * 4);
-}
-
-/* Derived key should be 32-bit aligned */
-void hchacha20(u32 derived_key[CHACHA20_KEY_WORDS],
- const u8 nonce[HCHACHA20_NONCE_SIZE],
- const u8 key[HCHACHA20_KEY_SIZE], simd_context_t *simd_context)
-{
- if (!hchacha20_arch(derived_key, nonce, key, simd_context))
- hchacha20_generic(derived_key, nonce, key);
-}
-EXPORT_SYMBOL(hchacha20);
-
-#include "../selftest/chacha20.c"
-
-static bool nosimd __initdata = false;
-
-#ifndef COMPAT_ZINC_IS_A_MODULE
-int __init chacha20_mod_init(void)
-#else
-static int __init mod_init(void)
-#endif
-{
- if (!nosimd)
- chacha20_fpu_init();
- if (!selftest_run("chacha20", chacha20_selftest, chacha20_nobs,
- ARRAY_SIZE(chacha20_nobs)))
- return -ENOTRECOVERABLE;
- return 0;
-}
-
-#ifdef COMPAT_ZINC_IS_A_MODULE
-static void __exit mod_exit(void)
-{
-}
-
-module_init(mod_init);
-module_exit(mod_exit);
-#endif