redlineo/red_crypto
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unified dec_pass array, update readme

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redlineo committed 2025-01-22 07:02:14 +00:00
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commit aaa6f71708
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README.md
+3 -5
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@@ -14,8 +14,9 @@ Supports cryptographic algorithms:
- [x] add read all ASCII-printable symbols for key
- [x] add Kuznechik lib for non 128 bit MCU
- [x] use SHA256 for hashing key to set key length to 32 bytes
- [ ] expand stored passwords length from 16 byte to 64
- [ ] expand number of stored passwords, may be with auto-adding new keycodes
- [x] expand stored passwords length from 16 byte to 64
- [x] expand number of stored passwords (manual adding new keys)
- [ ] write new passwords to EEPROM without flashing firmware
- [ ] add CBC mode for Kuznechik, it will increase security
## Installation
@@ -86,9 +87,6 @@ const uint8_t encrypted_passwords[STORAGE_SIZE][STORAGE_PASS_LEN] = {
If you want more passwords in storage, you should:
- add keys `RED_PASSX` into `enum red_crypto_keys` in `red_crypto.h`
- add into `crypto_proccess_record_user` handling new keys
- add into `uint8_t dec_pass[STORAGE_SIZE][STORAGE_PASS_LEN]` additional data. There are must be same size as `encrypted_passwords`.
> I know, that's inconvenient. I'm sorry, trying to do something with it.
7. Add new layer or set new keyes everywhere you want.
red_crypto.c
+16 -22
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@@ -2,27 +2,15 @@
#include "red_crypto.h"
uint8_t dec_pass[STORAGE_SIZE][STORAGE_PASS_LEN] = {
{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
uint8_t dec_pass[STORAGE_SIZE][STORAGE_PASS_LEN];
{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
};
void init_dec_pass() {
for (uint8_t i = 0; i < STORAGE_SIZE; i++) {
for (uint8_t j = 0; j < STORAGE_PASS_LEN; j++) {
dec_pass[i][j] = 0x00;
}
}
}
// you can use key any length with SHA256, kuznechik use only 32byte
#ifdef USE_SHA256_KEY
@@ -32,8 +20,6 @@ uint8_t readed_key[128] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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};
#endif
const uint8_t test_pass_block[16] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
uint8_t count_char_key = 0;
uint8_t crypto_mode = 0;
@@ -79,6 +65,8 @@ void decrypt_pass_kuzn(const uint8_t encrypted_passwords[STORAGE_SIZE][STORAGE_P
kuz_key_t key;
w128_t x;
init_dec_pass();
#ifdef USE_SHA256_KEY
SHA256_CTX ctx;
sha256_init(&ctx);
@@ -182,6 +170,12 @@ uint8_t crypto_process_record_user(uint16_t keycode, keyrecord_t *record, const
send_chars_pass(dec_pass[3]);
}
break;
// if you want to add more keys for passwords, copy this `case`
// case RED_PASSX: //change X here
// if (record->event.pressed) {
// send_chars_pass(dec_pass[X]); //change X here
// }
// break;
case RED_RNG:
if (record->event.pressed) {
// TODO: change seed