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bad using of STM32 eeprom, this version is not for STM32, need to rewrite with eeprom_stm32_l4 file

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redlineo committed 2025-01-28 09:35:27 +00:00
1 parent d1cb628eec
commit c1bf11fea6
2 files changed
+98 -43
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red_crypto.c
+95 -41
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@@ -6,12 +6,18 @@ void crypto_eeprom_init() {
uint8_t red_var[3] = {'R', 'E', 'D'};
// TODO: don't work with this var,copy it to global var in RAM
eeconfig_read_user_datablock(enc_pass.raw);
// for (uint8_t i = 0; i < EECONFIG_USER_DATA_SIZE; i++) {
// dprintf("%x ", enc_pass.raw[i]);
// }
if (memcmp(enc_pass.init_var, red_var, 3)) { // not empty eeprom
dprintf("Not empty EEPROM\n");
#undef INIT_STORAGE_SIZE
#define INIT_STORAGE_SIZE enc_pass.storage_size
#undef INIT_STORAGE_PASS_LEN
#define INIT_STORAGE_PASS_LEN enc_pass.storage_pass_len
} else { // empty eeprom
dprintf("Empty EEPROM\n");
enc_pass.init_var[0] = 'R';
enc_pass.init_var[1] = 'E';
enc_pass.init_var[2] = 'D';
@@ -49,10 +55,10 @@ void init_dec_pass(void) {
// you can use key any length with SHA256, kuznechik use only 32byte
#ifdef USE_SHA256_KEY
uint8_t readed_key[128] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
uint8_t master_key[128] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
#endif
#ifndef USE_SHA256_KEY
uint8_t readed_key[32] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
uint8_t master_key[32] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
#endif
uint8_t count_char_key = 0;
@@ -63,26 +69,58 @@ uint8_t decrypted_mode = 0;
uint8_t red_menu_mode = 0;
void encrypt_pass_kuzn(void) {
// encrypt new password
uint8_t *encrypt_pass_kuzn(const uint8_t *new_pass, const uint8_t new_pass_length) {
kuz_key_t key;
// w128_t x;
w128_t x;
uint8_t *new_pass_enc;
new_pass_enc = (uint8_t *)malloc(sizeof(uint8_t) * enc_pass.storage_pass_len);
init_dec_pass();
kuz_init();
// for hashing key, like a KDF algorithm
// using master_key for encrypting
#ifdef USE_SHA256_KEY
SHA256_CTX ctx;
sha256_init(&ctx);
sha256_update(&ctx, readed_key, red_min_len(u_strlen(readed_key), MAX_KEY_LEN));
sha256_update(&ctx, master_key, red_min_len(u_strlen(master_key), MAX_KEY_LEN));
BYTE result_key[SHA256_BLOCK_SIZE];
sha256_final(&ctx, result_key);
red_print_hex(result_key);
kuz_set_encrypt_key(&key, result_key);
kuz_set_decrypt_key(&key, result_key);
#endif
// if you don't have enough FLASH in MCU
#ifndef USE_SHA256_KEY
kuz_set_encrypt_key(&key, readed_key);
kuz_set_decrypt_key(&key, master_key);
#endif
#ifdef USE_RED_CRY_DEBUG
for (i = 0; i < 10; i++) {
print_w128(&key.k[i]);
}
#endif
#ifdef USE_RED_CRY_DEBUG
print_w128(&x);
#endif
// encrypting one password
// it will read only blocks with password, empty blocks will not be encrypted!
for (uint8_t block_index = 0; block_index < CEILING(new_pass_length, BLOCK_SIZE); block_index++) {
// reading password's block for encrypting
for (uint8_t byte_index = 0 + block_index * BLOCK_SIZE; byte_index < BLOCK_SIZE + block_index * BLOCK_SIZE; byte_index++) {
x.b[byte_index % BLOCK_SIZE] = new_pass[byte_index];
}
kuz_encrypt_block(&key, &x);
// reading encrypted block to return variable
for (uint8_t byte_index = 0 + block_index * BLOCK_SIZE; byte_index < BLOCK_SIZE + block_index * BLOCK_SIZE; byte_index++) {
new_pass_enc[byte_index + block_index * BLOCK_SIZE] = x.b[byte_index % BLOCK_SIZE];
}
#ifdef USE_RED_CRY_DEBUG
print_w128(&x);
print_chars_w128(&x);
#endif
}
return new_pass_enc;
}
// decrypting passwords
@@ -91,12 +129,13 @@ void decrypt_pass_kuzn(void) {
w128_t x;
init_dec_pass();
kuz_init();
// for hashing key, like a KDF algorithm
#ifdef USE_SHA256_KEY
SHA256_CTX ctx;
sha256_init(&ctx);
sha256_update(&ctx, readed_key, red_min_len(u_strlen(readed_key), MAX_KEY_LEN));
sha256_update(&ctx, master_key, red_min_len(u_strlen(master_key), MAX_KEY_LEN));
BYTE result_key[SHA256_BLOCK_SIZE];
sha256_final(&ctx, result_key);
red_print_hex(result_key);
@@ -104,39 +143,36 @@ void decrypt_pass_kuzn(void) {
#endif
// if you don't have enough FLASH in MCU
#ifndef USE_SHA256_KEY
kuz_set_decrypt_key(&key, readed_key);
kuz_set_decrypt_key(&key, master_key);
#endif
// decrypting all passwords in storage
for (uint8_t password_index = 0; password_index < enc_pass.storage_size; password_index++) {
#ifdef USE_RED_CRY_DEBUG
dprintf("decrypted\t=");
#endif
for (uint8_t block_index = 0; block_index < enc_pass.storage_pass_len / 16; block_index++) {
for (uint8_t block_index = 0; block_index < enc_pass.storage_pass_len / BLOCK_SIZE; block_index++) {
uint8_t cnt_zeros = 0;
// checking is this empty block or not
for (uint8_t byte_index = 0 + block_index * 16; byte_index < 16 + block_index * 16; byte_index++) {
for (uint8_t byte_index = 0 + block_index * BLOCK_SIZE; byte_index < BLOCK_SIZE + block_index * BLOCK_SIZE; byte_index++) {
// if (encrypted_passwords[password_index][byte_index] == 0x00) {
if (enc_pass.passwords[password_index * enc_pass.storage_pass_len + byte_index] == 0x00) {
cnt_zeros++;
} else {
cnt_zeros = 0;
break;
}
}
if (cnt_zeros != 0) break; // if there is zero 8 byte block in password, e.g. password length <32 or <64
if (cnt_zeros == BLOCK_SIZE) break; // if there are BLOCK_SIZE byte zeros block in password, e.g. password length <32 or <64
// reading password's block for decrypting
for (uint8_t byte_index = 0 + block_index * 16; byte_index < 16 + block_index * 16; byte_index++) {
// x.b[byte_index % 16] = encrypted_passwords[password_index][byte_index];
x.b[byte_index % 16] = enc_pass.passwords[password_index * enc_pass.storage_pass_len + byte_index];
for (uint8_t byte_index = 0 + block_index * BLOCK_SIZE; byte_index < BLOCK_SIZE + block_index * BLOCK_SIZE; byte_index++) {
// x.b[byte_index % BLOCK_SIZE] = encrypted_passwords[password_index][byte_index];
x.b[byte_index % BLOCK_SIZE] = enc_pass.passwords[password_index * enc_pass.storage_pass_len + byte_index];
}
// decrypting via Kuznechik
kuz_decrypt_block(&key, &x);
// writing decrypted password's block
for (uint8_t byte_index = 0 + block_index * 16; byte_index < 16 + block_index * 16; byte_index++) {
decrypted_passwords[password_index][byte_index] = x.b[byte_index % 16];
for (uint8_t byte_index = 0 + block_index * BLOCK_SIZE; byte_index < BLOCK_SIZE + block_index * BLOCK_SIZE; byte_index++) {
decrypted_passwords[password_index][byte_index] = x.b[byte_index % BLOCK_SIZE];
}
#ifdef USE_RED_CRY_DEBUG
@@ -147,18 +183,6 @@ void decrypt_pass_kuzn(void) {
}
};
// TODO: add encrypt new passwords with binding on new keys
// and storing all these to EEPROM
// void encrypt_pass_kuzn(){
// kuz_set_encrypt_key(&key,readed_key);
// for (uint8_t i=0; i<16; i++) {
// x.b[i] = pass[i];
// }
// kuz_encrypt_block(&key,&x);
// printf("encrypted\t="); print_w128(&x);
// print_chars_w128(&x);
// }
// function for embedding to "proccess_record_user" for adding crypto features
uint8_t crypto_process_record_user(uint16_t keycode, keyrecord_t *record) {
if (crypto_mode) {
@@ -166,7 +190,7 @@ uint8_t crypto_process_record_user(uint16_t keycode, keyrecord_t *record) {
case RED_CRY_M:
if (record->event.pressed) {
#ifdef USE_RED_CRY_DEBUG
red_print_int(readed_key);
red_print_int(master_key);
#endif
crypto_mode = 0;
count_char_key = 0;
@@ -175,7 +199,7 @@ uint8_t crypto_process_record_user(uint16_t keycode, keyrecord_t *record) {
}
default:
// reading key
return kc_to_ascii(keycode, record, readed_key, &count_char_key);
return kc_to_ascii(keycode, record, master_key, &count_char_key);
break;
}
} else if (decrypted_mode && red_menu_mode) {
@@ -188,26 +212,56 @@ uint8_t crypto_process_record_user(uint16_t keycode, keyrecord_t *record) {
} else if (decrypted_mode) {
switch (keycode) {
case RED_PASS1:
if (record->event.pressed) {
if (record->event.pressed && enc_pass.password_count <= 1) {
red_send_chars_pass(decrypted_passwords[0]);
}
break;
case RED_PASS2:
if (record->event.pressed) {
if (record->event.pressed && enc_pass.password_count <= 2) {
red_send_chars_pass(decrypted_passwords[1]);
}
break;
case RED_PASS3:
if (record->event.pressed) {
if (record->event.pressed && enc_pass.password_count <= 3) {
red_send_chars_pass(decrypted_passwords[2]);
}
break;
case RED_PASS4:
if (record->event.pressed) {
if (record->event.pressed && enc_pass.password_count <= 4) {
red_send_chars_pass(decrypted_passwords[3]);
}
break;
// if you want to add more keys for passwords, copy this `case`
case RED_PASS5:
if (record->event.pressed && enc_pass.password_count <= 5) {
red_send_chars_pass(decrypted_passwords[4]);
}
break;
case RED_PASS6:
if (record->event.pressed && enc_pass.password_count <= 6) {
red_send_chars_pass(decrypted_passwords[5]);
}
break;
case RED_PASS7:
if (record->event.pressed && enc_pass.password_count <= 7) {
red_send_chars_pass(decrypted_passwords[6]);
}
break;
case RED_PASS8:
if (record->event.pressed && enc_pass.password_count <= 8) {
red_send_chars_pass(decrypted_passwords[7]);
}
break;
case RED_PASS9:
if (record->event.pressed && enc_pass.password_count <= 9) {
red_send_chars_pass(decrypted_passwords[8]);
}
break;
case RED_PASS10:
if (record->event.pressed && enc_pass.password_count == 10) {
red_send_chars_pass(decrypted_passwords[9]);
}
break;
// if you want to add more keys for passwords, copy this `case` and add new keys in red_crypto.h
// case RED_PASSX: //change X here
// if (record->event.pressed) {
// red_send_chars_pass(decrypted_passwords[X]); //change X here
@@ -238,7 +292,7 @@ uint8_t crypto_process_record_user(uint16_t keycode, keyrecord_t *record) {
crypto_mode = 1; // to enter in crypto mode block code above
// clearing readed key
for (uint8_t i = 0; i < 32; i++) {
readed_key[i] = 0;
master_key[i] = 0;
}
// dprintf("%d", keycode);
}
red_crypto.h
+3 -2
View File
@@ -74,8 +74,9 @@ enum red_crypto_keys {
# define EEPROM_PASS_OFFSET 3 + 3 + 1 + 1 + 4 + 1
typedef union {
uint8_t raw[EEPROM_PASS_OFFSET + INIT_STORAGE_SIZE * INIT_STORAGE_PASS_LEN];
uint8_t raw[EECONFIG_BASE_SIZE + EEPROM_PASS_OFFSET + INIT_STORAGE_SIZE * INIT_STORAGE_PASS_LEN];
struct {
uint8_t qmk_core[34];
uint8_t init_var[3]; // if in eeprom is bytes "RED", then it's not first flash or first power-on, or in eeprom is old red_crypto
uint8_t version[3]; // red_crypto library version
uint8_t storage_size;
@@ -89,7 +90,7 @@ typedef union {
red_crypto_storage_eeprom enc_pass;
uint8_t crypto_process_record_user(uint16_t keycode, keyrecord_t *record);
void encrypt_pass_kuzn(void);
uint8_t *encrypt_pass_kuzn(const uint8_t *new_pass, const uint8_t new_pass_length);
void crypto_eeprom_init(void);
#endif