Sign.ino File Reference

#include <CryptnoxWallet.h>
#include <SPI.h>

Include dependency graph for Sign.ino:

Go to the source code of this file.

Macros
#define	PN532_SS_PIN   (10U)
	SPI slave-select (CS) pin connected to the PN532 module.
#define	DEMO_PIN   "000000000"
	Demo PIN used by this example. Must match the PIN that the card was initialised with (4–9 ASCII digits).

Functions
PN532Adapter	nfc (serialAdapter, PN532_SS_PIN, &SPI)
	PN532 transport adapter over SPI.
void	setup ()
	Arduino setup hook.
void	loop ()
	Arduino main loop.

Variables
ArduinoLoggerAdapter	serialAdapter
	Arduino logger adapter — emits SDK diagnostics on Serial.
ArduinoCryptoProvider	cryptoProvider
	Crypto provider (AES / SHA / micro-ecc / TRNG bridge for Arduino).
ArduinoPlatform	platform
	Platform adapter (Arduino blocking delay).
CryptnoxWallet	wallet (nfc, serialAdapter, cryptoProvider, platform)
	High-level Cryptnox wallet wiring the four adapters together.

Macro Definition Documentation

DEMO_PIN

#define DEMO_PIN   "000000000"

Demo PIN used by this example. Must match the PIN that the card was initialised with (4–9 ASCII digits).

Examples

Sign.ino, and VerifyPin.ino.

Definition at line 50 of file Sign.ino.

Referenced by loop().

PN532_SS_PIN

#define PN532_SS_PIN   (10U)

SPI slave-select (CS) pin connected to the PN532 module.

Definition at line 44 of file Sign.ino.

Function Documentation

loop()

void loop

(

)

Arduino main loop.

One full sign session per iteration on the happy path:

• CryptnoxWallet::connect opens the secure channel,
• CryptnoxWallet::sign signs the test hash with the on-card key,
• sensitive stack buffers are wiped via CW_Utils::secure_wipe,
• CryptnoxWallet::disconnect tears the channel down.

On CW_SIGN_PIN_INCORRECT the sketch enters an infinite halt to protect the card's retry counter. Other non-OK error codes are reported but the loop continues (those errors do not consume PIN tries).

The 1 s delay between successful iterations gives time to remove/replace the card and keeps the Serial output readable.

Definition at line 100 of file Sign.ino.

References CW_HASH_SIZE, CW_OK, CW_SIG_R_OFFSET, CW_SIG_S_OFFSET, CW_SIGN_CURR_K1, CW_SIGN_PIN_INCORRECT, CW_SIGN_SIG_ECDSA_LOW_S, CW_SIGN_WITH_PIN, DEMO_PIN, CW_SignResult::errorCode, F, CW_SignRequest::hash, CW_SignRequest::hashLength, HEX, CW_SignRequest::pin, CW_Utils::safe_memcpy(), CW_Utils::secure_wipe(), serialAdapter, CW_SignResult::signature, and wallet.

nfc()

PN532Adapter nfc	(	serialAdapter	,
		PN532_SS_PIN	,
		&	SPI )

PN532 transport adapter over SPI.

References PN532_SS_PIN, and serialAdapter.

setup()

void setup

(

)

Arduino setup hook.

Brings up Serial, the SPI bus and the PN532 reader. Halts on init failure (no reader detected) so the user can inspect the Serial output.

Definition at line 73 of file Sign.ino.

References F, serialAdapter, and wallet.

Variable Documentation

cryptoProvider

ArduinoCryptoProvider cryptoProvider

Crypto provider (AES / SHA / micro-ecc / TRNG bridge for Arduino).

Definition at line 59 of file Sign.ino.

platform

ArduinoPlatform platform

Platform adapter (Arduino blocking delay).

Definition at line 62 of file Sign.ino.

serialAdapter

ArduinoLoggerAdapter serialAdapter

Arduino logger adapter — emits SDK diagnostics on Serial.

Definition at line 53 of file Sign.ino.

wallet

CryptnoxWallet wallet(nfc, serialAdapter, cryptoProvider, platform)	(	nfc	,
		serialAdapter	,
		cryptoProvider	,
		platform	)

High-level Cryptnox wallet wiring the four adapters together.