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Diffstat (limited to 'sys/dev/if_wg/module/crypto/zinc/chacha20poly1305.c')
-rw-r--r--sys/dev/if_wg/module/crypto/zinc/chacha20poly1305.c196
1 files changed, 0 insertions, 196 deletions
diff --git a/sys/dev/if_wg/module/crypto/zinc/chacha20poly1305.c b/sys/dev/if_wg/module/crypto/zinc/chacha20poly1305.c
deleted file mode 100644
index 701666c78eb8..000000000000
--- a/sys/dev/if_wg/module/crypto/zinc/chacha20poly1305.c
+++ /dev/null
@@ -1,196 +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 ChaCha20Poly1305 AEAD construction.
- *
- * Information: https://tools.ietf.org/html/rfc8439
- */
-
-#include <sys/support.h>
-#include <zinc/chacha20poly1305.h>
-#include <zinc/chacha20.h>
-#include <zinc/poly1305.h>
-#include "selftest/run.h"
-
-static const u8 pad0[CHACHA20_BLOCK_SIZE] = { 0 };
-
-static inline void
-__chacha20poly1305_encrypt(u8 *dst, const u8 *src, const size_t src_len,
- const u8 *ad, const size_t ad_len, const u64 nonce,
- const u8 key[CHACHA20POLY1305_KEY_SIZE],
- simd_context_t *simd_context)
-{
- struct poly1305_ctx poly1305_state;
- struct chacha20_ctx chacha20_state;
- union {
- u8 block0[POLY1305_KEY_SIZE];
- __le64 lens[2];
- } b = { { 0 } };
-
- chacha20_init(&chacha20_state, key, nonce);
- chacha20(&chacha20_state, b.block0, b.block0, sizeof(b.block0),
- simd_context);
- poly1305_init(&poly1305_state, b.block0);
-
- poly1305_update(&poly1305_state, ad, ad_len, simd_context);
- poly1305_update(&poly1305_state, pad0, (0x10 - ad_len) & 0xf,
- simd_context);
-
- chacha20(&chacha20_state, dst, src, src_len, simd_context);
-
- poly1305_update(&poly1305_state, dst, src_len, simd_context);
- poly1305_update(&poly1305_state, pad0, (0x10 - src_len) & 0xf,
- simd_context);
-
- b.lens[0] = cpu_to_le64(ad_len);
- b.lens[1] = cpu_to_le64(src_len);
- poly1305_update(&poly1305_state, (u8 *)b.lens, sizeof(b.lens),
- simd_context);
-
- poly1305_final(&poly1305_state, dst + src_len, simd_context);
-
- memzero_explicit(&chacha20_state, sizeof(chacha20_state));
- memzero_explicit(&b, sizeof(b));
-}
-
-void chacha20poly1305_encrypt(u8 *dst, const u8 *src, const size_t src_len,
- const u8 *ad, const size_t ad_len,
- const u64 nonce,
- const u8 key[CHACHA20POLY1305_KEY_SIZE])
-{
- simd_context_t simd_context;
-
- simd_get(&simd_context);
- __chacha20poly1305_encrypt(dst, src, src_len, ad, ad_len, nonce, key,
- &simd_context);
- simd_put(&simd_context);
-}
-EXPORT_SYMBOL(chacha20poly1305_encrypt);
-static inline bool
-__chacha20poly1305_decrypt(u8 *dst, const u8 *src, const size_t src_len,
- const u8 *ad, const size_t ad_len, const u64 nonce,
- const u8 key[CHACHA20POLY1305_KEY_SIZE],
- simd_context_t *simd_context)
-{
- struct poly1305_ctx poly1305_state;
- struct chacha20_ctx chacha20_state;
- int ret;
- size_t dst_len;
- union {
- u8 block0[POLY1305_KEY_SIZE];
- u8 mac[POLY1305_MAC_SIZE];
- __le64 lens[2];
- } b = { { 0 } };
-
- if (unlikely(src_len < POLY1305_MAC_SIZE)) {
- printf("src_len too short\n");
- return false;
- }
-
- chacha20_init(&chacha20_state, key, nonce);
- chacha20(&chacha20_state, b.block0, b.block0, sizeof(b.block0),
- simd_context);
- poly1305_init(&poly1305_state, b.block0);
-
- poly1305_update(&poly1305_state, ad, ad_len, simd_context);
- poly1305_update(&poly1305_state, pad0, (0x10 - ad_len) & 0xf,
- simd_context);
-
- dst_len = src_len - POLY1305_MAC_SIZE;
- poly1305_update(&poly1305_state, src, dst_len, simd_context);
- poly1305_update(&poly1305_state, pad0, (0x10 - dst_len) & 0xf,
- simd_context);
-
- b.lens[0] = cpu_to_le64(ad_len);
- b.lens[1] = cpu_to_le64(dst_len);
- poly1305_update(&poly1305_state, (u8 *)b.lens, sizeof(b.lens),
- simd_context);
-
- poly1305_final(&poly1305_state, b.mac, simd_context);
-
- ret = crypto_memneq(b.mac, src + dst_len, POLY1305_MAC_SIZE);
- if (likely(!ret))
- chacha20(&chacha20_state, dst, src, dst_len, simd_context);
- else {
- printf("calculated: %16D\n", b.mac, "");
- printf("sent : %16D\n", src + dst_len, "");
- }
- memzero_explicit(&chacha20_state, sizeof(chacha20_state));
- memzero_explicit(&b, sizeof(b));
-
- return !ret;
-}
-
-bool chacha20poly1305_decrypt(u8 *dst, const u8 *src, const size_t src_len,
- const u8 *ad, const size_t ad_len,
- const u64 nonce,
- const u8 key[CHACHA20POLY1305_KEY_SIZE])
-{
- simd_context_t simd_context;
- bool ret;
-
- simd_get(&simd_context);
- ret = __chacha20poly1305_decrypt(dst, src, src_len, ad, ad_len, nonce,
- key, &simd_context);
- simd_put(&simd_context);
- return ret;
-}
-EXPORT_SYMBOL(chacha20poly1305_decrypt);
-
-void xchacha20poly1305_encrypt(u8 *dst, const u8 *src, const size_t src_len,
- const u8 *ad, const size_t ad_len,
- const u8 nonce[XCHACHA20POLY1305_NONCE_SIZE],
- const u8 key[CHACHA20POLY1305_KEY_SIZE])
-{
- simd_context_t simd_context;
- u32 derived_key[CHACHA20_KEY_WORDS] __aligned(16);
-
- simd_get(&simd_context);
- hchacha20(derived_key, nonce, key, &simd_context);
- cpu_to_le32_array(derived_key, ARRAY_SIZE(derived_key));
- __chacha20poly1305_encrypt(dst, src, src_len, ad, ad_len,
- get_unaligned_le64(nonce + 16),
- (u8 *)derived_key, &simd_context);
- memzero_explicit(derived_key, CHACHA20POLY1305_KEY_SIZE);
- simd_put(&simd_context);
-}
-EXPORT_SYMBOL(xchacha20poly1305_encrypt);
-
-bool xchacha20poly1305_decrypt(u8 *dst, const u8 *src, const size_t src_len,
- const u8 *ad, const size_t ad_len,
- const u8 nonce[XCHACHA20POLY1305_NONCE_SIZE],
- const u8 key[CHACHA20POLY1305_KEY_SIZE])
-{
- bool ret;
- simd_context_t simd_context;
- u32 derived_key[CHACHA20_KEY_WORDS] __aligned(16);
-
- simd_get(&simd_context);
- hchacha20(derived_key, nonce, key, &simd_context);
- cpu_to_le32_array(derived_key, ARRAY_SIZE(derived_key));
- ret = __chacha20poly1305_decrypt(dst, src, src_len, ad, ad_len,
- get_unaligned_le64(nonce + 16),
- (u8 *)derived_key, &simd_context);
- memzero_explicit(derived_key, CHACHA20POLY1305_KEY_SIZE);
- simd_put(&simd_context);
- return ret;
-}
-EXPORT_SYMBOL(xchacha20poly1305_decrypt);
-
-#include "selftest/chacha20poly1305.c"
-
-static int __init mod_init(void)
-{
- if (!selftest_run("chacha20poly1305", chacha20poly1305_selftest,
- NULL, 0))
- return -ENOTRECOVERABLE;
- return 0;
-}
-
-static void __exit mod_exit(void)
-{
-}
-
-module_init(mod_init);
-module_exit(mod_exit);
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-22 11:28:33 +0000