[FL-1958] U2F prototype (#879)

* U2F implementation prototype
* U2F data encryption and store, user confirmation request
* remove debug prints
* fix notification bug in chrome
* split u2f_alloc into u2f_init and u2f_alloc
* typo fix, furi-hal-trng -> furi-hal-random
* rand/srand redefinition
* SubGhz: a little bit of Dante.
* u2f_data naming fix

Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>

firmware/targets/furi-hal-include/furi-hal-crypto.h

@@ -32,6 +32,10 @@ typedef struct {
  */
 void furi_hal_crypto_init();
 
+bool furi_hal_crypto_verify_enclave(uint8_t* keys_nb, uint8_t* valid_keys_nb);
+
+bool furi_hal_crypto_verify_key(uint8_t key_slot);
+
 /** Store key in crypto storage
  *
  * @param      key   FuriHalCryptoKey to store. Only Master, Simple or

firmware/targets/furi-hal-include/furi-hal-random.h

@@ -0,0 +1,24 @@
+#pragma once
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Get random value
+ *
+ * @return     random value
+ */
+uint32_t furi_hal_random_get();
+
+/** Fill buffer with random data
+ *
+ * @param      buf  buffer pointer
+ * @param      data buffer len
+ */
+void furi_hal_random_fill_buf(uint8_t* buf, uint32_t len);
+
+#ifdef __cplusplus
+}
+#endif

firmware/targets/furi-hal-include/furi-hal-usb-hid-u2f.h

@@ -0,0 +1,36 @@
+#pragma once
+
+#define HID_U2F_PACKET_LEN 64
+
+typedef enum {
+    HidU2fDisconnected,
+    HidU2fConnected,
+    HidU2fRequest,
+} HidU2fEvent;
+
+typedef void (*HidU2fCallback)(HidU2fEvent ev, void* context);
+
+/** Get HID U2F connection state
+ *
+ * @return      true / false
+ */
+bool furi_hal_hid_u2f_is_connected();
+
+/** Set HID U2F event callback
+ *
+ * @param      cb  callback
+ * @param      ctx  callback context
+ */
+void furi_hal_hid_u2f_set_callback(HidU2fCallback cb, void* ctx);
+
+/** Get received U2F HID packet
+ *
+ */
+uint32_t furi_hal_hid_u2f_get_request(uint8_t* data);
+
+/** Send U2F HID response packet
+ *
+ * @param      data  response data
+ * @param      len  packet length
+ */
+void furi_hal_hid_u2f_send_response(uint8_t* data, uint8_t len);

firmware/targets/furi-hal-include/furi-hal-usb.h

@@ -23,6 +23,7 @@ struct UsbInterface {
 extern UsbInterface usb_cdc_single;
 extern UsbInterface usb_cdc_dual;
 extern UsbInterface usb_hid;
+extern UsbInterface usb_hid_u2f;
 
 /** USB device low-level initialization
  */

firmware/targets/furi-hal-include/furi-hal.h

@@ -40,6 +40,7 @@ template <unsigned int N> struct STOP_EXTERNING_ME {};
 #include "furi-hal-compress.h"
 #include "furi-hal-uart.h"
 #include "furi-hal-info.h"
+#include "furi-hal-random.h"
 
 /** Init furi-hal */
 void furi_hal_init();