From f9004dbfff8a3fbbd7e2a88c8a4327c7f2f8e5b2 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 31 Jan 2024 01:04:47 +0000
Subject: [PATCH] add driver 5G
---
kernel/include/crypto/chacha.h | 21 +++++++++++++++++----
1 files changed, 17 insertions(+), 4 deletions(-)
diff --git a/kernel/include/crypto/chacha.h b/kernel/include/crypto/chacha.h
index d64f022..b3ea73b 100644
--- a/kernel/include/crypto/chacha.h
+++ b/kernel/include/crypto/chacha.h
@@ -23,6 +23,7 @@
#define CHACHA_KEY_SIZE 32
#define CHACHA_BLOCK_SIZE 64
+#define CHACHAPOLY_IV_SIZE 12
#define CHACHA_STATE_WORDS (CHACHA_BLOCK_SIZE / sizeof(u32))
@@ -46,13 +47,25 @@
hchacha_block_generic(state, out, nrounds);
}
+enum chacha_constants { /* expand 32-byte k */
+ CHACHA_CONSTANT_EXPA = 0x61707865U,
+ CHACHA_CONSTANT_ND_3 = 0x3320646eU,
+ CHACHA_CONSTANT_2_BY = 0x79622d32U,
+ CHACHA_CONSTANT_TE_K = 0x6b206574U
+};
+
+static inline void chacha_init_consts(u32 *state)
+{
+ state[0] = CHACHA_CONSTANT_EXPA;
+ state[1] = CHACHA_CONSTANT_ND_3;
+ state[2] = CHACHA_CONSTANT_2_BY;
+ state[3] = CHACHA_CONSTANT_TE_K;
+}
+
void chacha_init_arch(u32 *state, const u32 *key, const u8 *iv);
static inline void chacha_init_generic(u32 *state, const u32 *key, const u8 *iv)
{
- state[0] = 0x61707865; /* "expa" */
- state[1] = 0x3320646e; /* "nd 3" */
- state[2] = 0x79622d32; /* "2-by" */
- state[3] = 0x6b206574; /* "te k" */
+ chacha_init_consts(state);
state[4] = key[0];
state[5] = key[1];
state[6] = key[2];
--
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