redlineo/red_crypto
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expand key lenght, add key hashing

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redlineo committed 2025-01-20 14:55:18 +00:00
1 parent 4630460b88
commit 842beb2716
4 files changed
+27 -17
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red_crypto.c
+20 -14
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@@ -4,7 +4,7 @@
uint8_t dec_pass[2][16] = {{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 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 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 count_char_key = 0;
@@ -37,36 +37,41 @@ void decrypt_pass_kuzn(const uint8_t encrypted_passwords[2][16]) {
kuz_key_t key;
w128_t x;
kuz_set_decrypt_key(&key, readed_key);
SHA256_CTX ctx;
sha256_init(&ctx);
sha256_update(&ctx,readed_key,MAX_KEY_LEN);
BYTE result_key[SHA256_BLOCK_SIZE];
sha256_final(&ctx,result_key);
kuz_set_decrypt_key(&key, result_key);
for (uint8_t j = 0; j < 2; j++) {
for (uint8_t i = 0; i < 16; i++) {
x.b[i] = encrypted_passwords[j][i];
}
kuz_decrypt_block(&key, &x);
#ifdef USE_RED_CRY_DEBUG
#ifdef USE_RED_CRY_DEBUG
dprintf("decrypted\t=");
print_w128(&x);
print_chars_w128(&x);
#endif
#endif
for (uint8_t i = 0; i < 16; i++) {
dec_pass[j][i] = x.b[i];
}
}
};
// 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);
// 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);
// }
void send_chars_pass(uint8_t *out) {
@@ -80,14 +85,15 @@ uint8_t crypto_process_record_user(uint16_t keycode, keyrecord_t *record, const
switch (keycode) {
case RED_CRY_M:
if (record->event.pressed) {
#ifdef USE_RED_CRY_DEBUG
#ifdef USE_RED_CRY_DEBUG
print_int(readed_key);
#endif
#endif
crypto_mode = 0;
count_char_key = 0;
decrypt_pass_kuzn(encrypted_passwords);
}
default:
//reading key
return kc_to_ascii(keycode, record, readed_key, &count_char_key);
break;
}