BTCPrivate
/
trezor-mcu
mirror of https://github.com/BTCPrivate/trezor-mcu.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

fix indentation

This commit is contained in:
Jochen Hoenicke 2016-05-26 21:21:08 +02:00
parent 78d11cf060
commit a366700332
1 changed files with 19 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

38
firmware/u2f.c
View File

@ -477,31 +477,31 @@ const HDNode *getDerivedNode(uint32_t *address_n, size_t address_n_count)
const HDNode *generateKeyHandle(const uint8_t app_id[], uint8_t key_handle[])
{
uint8_t keybase[U2F_APPID_SIZE + KEY_PATH_LEN];
uint8_t keybase[U2F_APPID_SIZE + KEY_PATH_LEN];
// Derivation path is m/U2F'/r'/r'/r'/r'/r'/r'/r'/r'
uint32_t i, key_path[KEY_PATH_ENTRIES];
key_path[0] = U2F_KEY_PATH;
for (i = 1; i < KEY_PATH_ENTRIES; i++) {
// high bit for hardened keys
key_path[i]= 0x80000000 | random32();
}
// Derivation path is m/U2F'/r'/r'/r'/r'/r'/r'/r'/r'
uint32_t i, key_path[KEY_PATH_ENTRIES];
key_path[0] = U2F_KEY_PATH;
for (i = 1; i < KEY_PATH_ENTRIES; i++) {
// high bit for hardened keys
key_path[i]= 0x80000000 | random32();
}
// First half of keyhandle is key_path
memcpy(key_handle, &key_path[1], KEY_PATH_LEN);
// First half of keyhandle is key_path
memcpy(key_handle, &key_path[1], KEY_PATH_LEN);
// prepare keypair from /random data
const HDNode *node = getDerivedNode(key_path, KEY_PATH_ENTRIES);
// prepare keypair from /random data
const HDNode *node = getDerivedNode(key_path, KEY_PATH_ENTRIES);
// For second half of keyhandle
// Signature of app_id and random data
memcpy(&keybase[0], app_id, U2F_APPID_SIZE);
memcpy(&keybase[U2F_APPID_SIZE], key_handle, KEY_PATH_LEN);
hmac_sha256(node->private_key, sizeof(node->private_key),
// For second half of keyhandle
// Signature of app_id and random data
memcpy(&keybase[0], app_id, U2F_APPID_SIZE);
memcpy(&keybase[U2F_APPID_SIZE], key_handle, KEY_PATH_LEN);
hmac_sha256(node->private_key, sizeof(node->private_key),
keybase, sizeof(keybase), &key_handle[KEY_PATH_LEN]);
// Done!
return node;
// Done!
return node;
}