docs(readme): 更新项目文档并移除过时文件
- 添加详细的项目介绍，包括硬件平台、功能模块和目录结构 - 移除旧的 docs/README.md 和 docs/tasks.md 文件 - 更新 .gitignore 添加 .cache/ 目录 - 调整 CMakeLists.txt 依赖项顺序，添加 mbedtls - 简化头文件包含，移除不必要的 esp_log.h 和 esp_netif_types.h 引用
This commit is contained in:
小龙虾
+71
-345
@@ -1,349 +1,25 @@
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/*
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* protocol.c - 协议层实现
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* T2.1, T2.2, T1.3
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* ESP-IDF 6.0 适配版本 - 使用软件 AES 实现 + 硬件 RNG
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* ESP-IDF 6.0 适配版本 - 使用硬件 AES-128-CBC + 硬件 RNG
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*
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* 加密实现使用 ESP32-C3 硬件 AES 加速器（通过 mbedtls port）
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*/
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#include <string.h>
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#include <stdio.h>
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#include "esp_random.h"
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#include "aes/esp_aes.h"
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#include "app_config.h"
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#include "protocol.h"
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#include "monitor/debug_log.h"
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static bool s_protocol_initialized = false;
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// ========== 软件 AES-128 实现 ==========
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// AES S-Box
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static const uint8_t sbox[256] = {
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0x63,0x7c,0x77,0x7b,0xf2,0x6b,0x6f,0xc5,0x30,0x01,0x67,0x2b,0xfe,0xd7,0xab,0x76,
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0xca,0x82,0xc9,0x7d,0xfa,0x59,0x47,0xf0,0xad,0xd4,0xa2,0xaf,0x9c,0xa4,0x72,0xc0,
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0xb7,0xfd,0x93,0x26,0x36,0x3f,0xf7,0xcc,0x34,0xa5,0xe5,0xf1,0x71,0xd8,0x31,0x15,
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0x04,0xc7,0x23,0xc3,0x18,0x96,0x05,0x9a,0x07,0x12,0x80,0xe2,0xeb,0x27,0xb2,0x75,
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0x09,0x83,0x2c,0x1a,0x1b,0x6e,0x5a,0xa0,0x52,0x3b,0xd6,0xb3,0x29,0xe3,0x2f,0x84,
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0x53,0xd1,0x00,0xed,0x20,0xfc,0xb1,0x5b,0x6a,0xcb,0xbe,0x39,0x4a,0x4c,0x58,0xcf,
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0xd0,0xef,0xaa,0xfb,0x43,0x4d,0x33,0x85,0x45,0xf9,0x02,0x7f,0x50,0x3c,0x9f,0xa8,
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0x51,0xa3,0x40,0x8f,0x92,0x9d,0x38,0xf5,0xbc,0xb6,0xda,0x21,0x10,0xff,0xf3,0xd2,
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0xcd,0x0c,0x13,0xec,0x5f,0x97,0x44,0x17,0xc4,0xa7,0x7e,0x3d,0x64,0x5d,0x19,0x73,
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0x60,0x81,0x4f,0xdc,0x22,0x2a,0x90,0x88,0x46,0xee,0xb8,0x14,0xde,0x5e,0x0b,0xdb,
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0xe0,0x32,0x3a,0x0a,0x49,0x06,0x24,0x5c,0xc2,0xd3,0xac,0x62,0x91,0x95,0xe4,0x79,
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0xe7,0xc8,0x37,0x6d,0x8d,0xd5,0x4e,0xa9,0x6c,0x56,0xf4,0xea,0x65,0x7a,0xae,0x08,
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0xba,0x78,0x25,0x2e,0x1c,0xa6,0xb4,0xc6,0xe8,0xdd,0x74,0x1f,0x4b,0xbd,0x8b,0x8a,
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0x70,0x3e,0xb5,0x66,0x48,0x03,0xf6,0x0e,0x61,0x35,0x57,0xb9,0x86,0xc1,0x1d,0x9e,
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0xe1,0xf8,0x98,0x11,0x69,0xd9,0x8e,0x94,0x9b,0x1e,0x87,0xe9,0xce,0x55,0x28,0xdf,
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0x8c,0xa1,0x89,0x0d,0xbf,0xe6,0x42,0x68,0x41,0x99,0x2d,0x0f,0xb0,0x54,0xbb,0x16
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};
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// AES 逆 S-Box
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static const uint8_t rsbox[256] = {
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0x52,0x09,0x6a,0xd5,0x30,0x36,0xa5,0x38,0xbf,0x40,0xa3,0x9e,0x81,0xf3,0xd7,0xfb,
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0x7c,0xe3,0x39,0x82,0x9b,0x2f,0xff,0x87,0x34,0x8e,0x43,0x44,0xc4,0xde,0xe9,0xcb,
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0x54,0x7b,0x94,0x32,0xa6,0xc2,0x23,0x3d,0xee,0x4c,0x95,0x0b,0x42,0xfa,0xc3,0x4e,
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0x08,0x2e,0xa1,0x66,0x28,0xd9,0x24,0xb2,0x76,0x5b,0xa2,0x49,0x6d,0x8b,0xd1,0x25,
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0x72,0xf8,0xf6,0x64,0x86,0x68,0x98,0x16,0xd4,0xa4,0x5c,0xcc,0x5d,0x65,0xb6,0x92,
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0x6c,0x70,0x48,0x50,0xfd,0xed,0xb9,0xda,0x5e,0x15,0x46,0x57,0xa7,0x8d,0x9d,0x84,
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0x90,0xd8,0xab,0x00,0x8c,0xbc,0xd3,0x0a,0xf7,0xe4,0x58,0x05,0xb8,0xb3,0x45,0x06,
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0xd0,0x2c,0x1e,0x8f,0xca,0x3f,0x0f,0x02,0xc1,0xaf,0xbd,0x03,0x01,0x13,0x8a,0x6b,
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0x3a,0x91,0x11,0x41,0x4f,0x67,0xdc,0xea,0x97,0xf2,0xcf,0xce,0xf0,0xb4,0xe6,0x73,
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0x96,0xac,0x74,0x22,0xe7,0xad,0x35,0x85,0xe2,0xf9,0x37,0xe8,0x1c,0x75,0xdf,0x6e,
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0x47,0xf1,0x1a,0x71,0x1d,0x29,0xc5,0x89,0x6f,0xb7,0x62,0x0e,0xaa,0x18,0xbe,0x1b,
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0xfc,0x56,0x3e,0x4b,0xc6,0xd2,0x79,0x20,0x9a,0xdb,0xc0,0xfe,0x78,0xcd,0x5a,0xf4,
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0x1f,0xdd,0xa8,0x33,0x88,0x07,0xc7,0x31,0xb1,0x12,0x10,0x59,0x27,0x80,0xec,0x5f,
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0x60,0x51,0x7f,0xa9,0x19,0xb5,0x4a,0x0d,0x2d,0xe5,0x7a,0x9f,0x93,0xc9,0x9c,0xef,
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0xa0,0xe0,0x3b,0x4d,0xae,0x2a,0xf5,0xb0,0xc8,0xeb,0xbb,0x3c,0x83,0x53,0x99,0x61,
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0x17,0x2b,0x04,0x7e,0xba,0x77,0xd6,0x26,0xe1,0x69,0x14,0x63,0x55,0x21,0x0c,0x7d
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};
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// AES Rcon
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static const uint8_t Rcon[11] = {
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0x8d,0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80,0x1b,0x36
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};
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// AES 状态操作
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#define AES_BLOCK_SIZE 16
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typedef struct {
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uint8_t round_key[176]; // 10 rounds * 16 bytes + initial key
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} aes128_context_t;
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// GF(2^8) 乘法
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static uint8_t gmul(uint8_t a, uint8_t b)
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{
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uint8_t p = 0, hbit;
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for (int i = 0; i < 8; i++) {
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if (b & 1) {
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p ^= a;
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}
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hbit = a & 0x80;
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a <<= 1;
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if (hbit) {
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a ^= 0x1b; // 模不可约多项式 x^8 + x^4 + x^3 + x + 1
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}
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b >>= 1;
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}
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return p;
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}
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// 密钥扩展
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static void aes128_key_expansion(const uint8_t *key, aes128_context_t *ctx)
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{
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uint8_t temp[4];
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memcpy(ctx->round_key, key, 16);
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for (int i = 4; i < 44; i++) {
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for (int j = 0; j < 4; j++) {
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temp[j] = ctx->round_key[(i - 1) * 4 + j];
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}
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if (i % 4 == 0) {
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// RotWord
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uint8_t t = temp[0];
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temp[0] = temp[1];
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temp[1] = temp[2];
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temp[2] = temp[3];
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temp[3] = t;
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// SubWord
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temp[0] = sbox[temp[0]];
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temp[1] = sbox[temp[1]];
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temp[2] = sbox[temp[2]];
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temp[3] = sbox[temp[3]];
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temp[0] ^= Rcon[i / 4];
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}
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for (int j = 0; j < 4; j++) {
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ctx->round_key[i * 4 + j] = ctx->round_key[(i - 4) * 4 + j] ^ temp[j];
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}
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}
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}
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// 字节替换
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static void sub_bytes(uint8_t *state)
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{
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for (int i = 0; i < 16; i++) {
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state[i] = sbox[state[i]];
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}
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}
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// 逆字节替换
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static void inv_sub_bytes(uint8_t *state)
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{
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for (int i = 0; i < 16; i++) {
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state[i] = rsbox[state[i]];
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}
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}
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// 行移位
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static void shift_rows(uint8_t *state)
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{
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uint8_t temp;
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// 第1行左移1位
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temp = state[1];
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state[1] = state[5];
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state[5] = state[9];
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state[9] = state[13];
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state[13] = temp;
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// 第2行左移2位
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temp = state[2];
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state[2] = state[10];
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state[10] = temp;
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temp = state[6];
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state[6] = state[14];
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state[14] = temp;
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// 第3行左移3位
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temp = state[15];
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state[15] = state[11];
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state[11] = state[7];
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state[7] = state[3];
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state[3] = temp;
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}
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// 逆行移位
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static void inv_shift_rows(uint8_t *state)
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{
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uint8_t temp;
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// 第1行右移1位
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temp = state[13];
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state[13] = state[9];
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state[9] = state[5];
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state[5] = state[1];
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state[1] = temp;
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// 第2行右移2位
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temp = state[2];
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state[2] = state[10];
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state[10] = temp;
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temp = state[6];
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state[6] = state[14];
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state[14] = temp;
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// 第3行右移3位
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temp = state[3];
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state[3] = state[7];
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state[7] = state[11];
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state[11] = state[15];
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state[15] = temp;
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}
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// 列混合
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static void mix_columns(uint8_t *state)
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{
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uint8_t temp[16];
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memcpy(temp, state, 16);
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for (int i = 0; i < 4; i++) {
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int c = i * 4;
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state[c] = gmul(2, temp[c]) ^ gmul(3, temp[c + 1]) ^ temp[c + 2] ^ temp[c + 3];
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state[c + 1] = temp[c] ^ gmul(2, temp[c + 1]) ^ gmul(3, temp[c + 2]) ^ temp[c + 3];
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state[c + 2] = temp[c] ^ temp[c + 1] ^ gmul(2, temp[c + 2]) ^ gmul(3, temp[c + 3]);
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state[c + 3] = gmul(3, temp[c]) ^ temp[c + 1] ^ temp[c + 2] ^ gmul(2, temp[c + 3]);
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}
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}
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// 逆列混合
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static void inv_mix_columns(uint8_t *state)
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{
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uint8_t temp[16];
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memcpy(temp, state, 16);
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for (int i = 0; i < 4; i++) {
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int c = i * 4;
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state[c] = gmul(14, temp[c]) ^ gmul(11, temp[c + 1]) ^ gmul(13, temp[c + 2]) ^ gmul(9, temp[c + 3]);
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state[c + 1] = gmul(9, temp[c]) ^ gmul(14, temp[c + 1]) ^ gmul(11, temp[c + 2]) ^ gmul(13, temp[c + 3]);
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state[c + 2] = gmul(13, temp[c]) ^ gmul(9, temp[c + 1]) ^ gmul(14, temp[c + 2]) ^ gmul(11, temp[c + 3]);
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state[c + 3] = gmul(11, temp[c]) ^ gmul(13, temp[c + 1]) ^ gmul(9, temp[c + 2]) ^ gmul(14, temp[c + 3]);
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}
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}
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// 轮密钥加
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static void add_round_key(uint8_t *state, const uint8_t *round_key)
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{
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for (int i = 0; i < 16; i++) {
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state[i] ^= round_key[i];
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}
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}
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// AES-128 加密单个块
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static void aes128_encrypt_block(const uint8_t *input, uint8_t *output, const aes128_context_t *ctx)
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{
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uint8_t state[16];
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// 复制输入到状态（列优先顺序）
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for (int i = 0; i < 4; i++) {
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for (int j = 0; j < 4; j++) {
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state[i * 4 + j] = input[j * 4 + i];
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}
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}
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// 初始轮密钥加
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add_round_key(state, ctx->round_key);
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// 9轮加密
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for (int round = 1; round < 10; round++) {
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sub_bytes(state);
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shift_rows(state);
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mix_columns(state);
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add_round_key(state, ctx->round_key + round * 16);
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}
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// 最后一轮（无列混合）
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sub_bytes(state);
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shift_rows(state);
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add_round_key(state, ctx->round_key + 10 * 16);
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// 复制状态到输出（列优先顺序）
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for (int i = 0; i < 4; i++) {
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for (int j = 0; j < 4; j++) {
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output[j * 4 + i] = state[i * 4 + j];
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}
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}
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}
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// AES-128 解密单个块
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static void aes128_decrypt_block(const uint8_t *input, uint8_t *output, const aes128_context_t *ctx)
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{
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uint8_t state[16];
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// 复制输入到状态（列优先顺序）
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for (int i = 0; i < 4; i++) {
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for (int j = 0; j < 4; j++) {
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state[i * 4 + j] = input[j * 4 + i];
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}
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}
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// 初始轮密钥加
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add_round_key(state, ctx->round_key + 10 * 16);
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// 9轮解密
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for (int round = 9; round >= 1; round--) {
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inv_shift_rows(state);
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inv_sub_bytes(state);
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add_round_key(state, ctx->round_key + round * 16);
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inv_mix_columns(state);
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}
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// 最后一轮（无逆列混合）
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inv_shift_rows(state);
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inv_sub_bytes(state);
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add_round_key(state, ctx->round_key);
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// 复制状态到输出（列优先顺序）
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for (int i = 0; i < 4; i++) {
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for (int j = 0; j < 4; j++) {
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output[j * 4 + i] = state[i * 4 + j];
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}
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}
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}
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// CBC 模式加密
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static void aes128_cbc_encrypt(const uint8_t *input, uint8_t *output, size_t length,
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const uint8_t *iv, const aes128_context_t *ctx)
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{
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uint8_t prev[16];
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memcpy(prev, iv, 16);
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for (size_t i = 0; i < length; i += 16) {
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uint8_t block[16];
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memcpy(block, input + i, 16);
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// XOR with previous ciphertext (or IV for first block)
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for (int j = 0; j < 16; j++) {
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block[j] ^= prev[j];
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}
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aes128_encrypt_block(block, output + i, ctx);
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memcpy(prev, output + i, 16);
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}
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}
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// CBC 模式解密
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static void aes128_cbc_decrypt(const uint8_t *input, uint8_t *output, size_t length,
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const uint8_t *iv, const aes128_context_t *ctx)
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{
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uint8_t prev[16];
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memcpy(prev, iv, 16);
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for (size_t i = 0; i < length; i += 16) {
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aes128_decrypt_block(input + i, output + i, ctx);
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// XOR with previous ciphertext (or IV for first block)
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for (int j = 0; j < 16; j++) {
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output[i + j] ^= prev[j];
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}
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memcpy(prev, input + i, 16);
|
||||
}
|
||||
}
|
||||
|
||||
void protocol_init(void)
|
||||
{
|
||||
if (s_protocol_initialized) return;
|
||||
|
||||
DEBUG_INFO("PROT", "初始化协议层（CRC16、软件AES）...");
|
||||
DEBUG_INFO("PROT", "初始化协议层（CRC16、硬件AES-CBC）...");
|
||||
|
||||
s_protocol_initialized = true;
|
||||
DEBUG_INFO("PROT", "协议层就绪");
|
||||
@@ -442,44 +118,94 @@ int frame_parse(const uint8_t *frame, size_t frame_len,
|
||||
return 0;
|
||||
}
|
||||
|
||||
// AES-128 CBC 加密
|
||||
// 注意: 函数名带 protocol_ 前缀以避免与 ESP-IDF wpa_supplicant 组件冲突
|
||||
// AES-128 CBC 加密（使用 ESP32-C3 硬件 AES）
|
||||
int protocol_aes_encrypt(const uint8_t *plaintext, size_t len,
|
||||
const uint8_t *key, const uint8_t *iv,
|
||||
uint8_t *ciphertext_out)
|
||||
{
|
||||
if (!plaintext || !key || !iv || !ciphertext_out) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
// PKCS#7 填充
|
||||
size_t padded_len = ((len + 15) / 16) * 16;
|
||||
uint8_t padded[256];
|
||||
|
||||
memset(padded, 0, sizeof(padded));
|
||||
memcpy(padded, plaintext, len);
|
||||
uint8_t pad = (uint8_t)(16 - (len % 16));
|
||||
if (pad == 0) pad = 16;
|
||||
memset(&padded[len], pad, pad);
|
||||
|
||||
aes128_context_t ctx;
|
||||
aes128_key_expansion(key, &ctx);
|
||||
aes128_cbc_encrypt(padded, ciphertext_out, padded_len, iv, &ctx);
|
||||
// 硬件 AES-CBC 加密（使用 ESP32-C3 硬件 AES 加速器）
|
||||
esp_aes_context aes_ctx;
|
||||
esp_aes_init(&aes_ctx);
|
||||
|
||||
return padded_len;
|
||||
int ret = esp_aes_setkey(&aes_ctx, key, 128);
|
||||
if (ret != 0) {
|
||||
DEBUG_ERR("PROT", "esp_aes_setkey 失败: %d", ret);
|
||||
esp_aes_free(&aes_ctx);
|
||||
return -1;
|
||||
}
|
||||
|
||||
uint8_t iv_copy[16];
|
||||
memcpy(iv_copy, iv, 16);
|
||||
|
||||
ret = esp_aes_crypt_cbc(&aes_ctx, ESP_AES_ENCRYPT, padded_len, iv_copy, padded, ciphertext_out);
|
||||
|
||||
esp_aes_free(&aes_ctx);
|
||||
|
||||
if (ret == 0) {
|
||||
return padded_len;
|
||||
} else {
|
||||
DEBUG_ERR("PROT", "esp_aes_crypt_cbc 加密失败: %d", ret);
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
// AES-128 CBC 解密
|
||||
// 注意: 函数名带 protocol_ 前缀以避免与 ESP-IDF wpa_supplicant 组件冲突
|
||||
// AES-128 CBC 解密（使用 ESP32-C3 硬件 AES）
|
||||
int protocol_aes_decrypt(const uint8_t *ciphertext, size_t len,
|
||||
const uint8_t *key, const uint8_t *iv,
|
||||
uint8_t *plaintext_out)
|
||||
{
|
||||
if (len % 16 != 0) {
|
||||
DEBUG_ERR("PROT", "Ciphertext 长度不是 16 的倍数: %zu", len);
|
||||
if (!ciphertext || !key || !iv || !plaintext_out) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
aes128_context_t ctx;
|
||||
aes128_key_expansion(key, &ctx);
|
||||
aes128_cbc_decrypt(ciphertext, plaintext_out, len, iv, &ctx);
|
||||
if (len % 16 != 0 || len == 0) {
|
||||
DEBUG_ERR("PROT", "Ciphertext 长度无效: %zu", len);
|
||||
return -1;
|
||||
}
|
||||
|
||||
// 硬件 AES-CBC 解密（使用 ESP32-C3 硬件 AES 加速器）
|
||||
esp_aes_context aes_ctx;
|
||||
esp_aes_init(&aes_ctx);
|
||||
|
||||
int ret = esp_aes_setkey(&aes_ctx, key, 128);
|
||||
if (ret != 0) {
|
||||
DEBUG_ERR("PROT", "esp_aes_setkey 失败: %d", ret);
|
||||
esp_aes_free(&aes_ctx);
|
||||
return -1;
|
||||
}
|
||||
|
||||
uint8_t iv_copy[16];
|
||||
memcpy(iv_copy, iv, 16);
|
||||
|
||||
ret = esp_aes_crypt_cbc(&aes_ctx, ESP_AES_DECRYPT, len, iv_copy, ciphertext, plaintext_out);
|
||||
|
||||
esp_aes_free(&aes_ctx);
|
||||
|
||||
if (ret != 0) {
|
||||
DEBUG_ERR("PROT", "esp_aes_crypt_cbc 解密失败: %d", ret);
|
||||
return -1;
|
||||
}
|
||||
|
||||
// 移除 PKCS#7 填充
|
||||
uint8_t pad = plaintext_out[len - 1];
|
||||
if (pad > 16) return -1;
|
||||
if (pad > 16) {
|
||||
DEBUG_ERR("PROT", "无效填充: %d", pad);
|
||||
return -1;
|
||||
}
|
||||
|
||||
return len - pad;
|
||||
}
|
||||
|
||||
|
||||
Reference in New Issue
Block a user