how to use cc1310 hardware encrption

Hi

Please see the documentation of the crypto driver found when downloading the TI-RTOS:

C:\ti\tirtos_cc13xx_cc26xx_2_15_00_17\products\tidrivers_cc13xx_cc26xx_2_15_00_26\docs\doxygen\html\_crypto_c_c26_x_x_8h.html

Siri

I used the documentation that you referred and my code block is as below

keyIndex

// Declared globally outside the task function 
typedef struct
{
	uint8_t ui8AESKey[16];
	CryptoCC26XX_KeyLocation ui8AESKeyLocation; // Location in Key RAM
	uint8_t ui8AESClearText[16];                // Input message - clear text
	uint8_t ui8AESMsgOut[16];                   // Output message
	uint8_t ui8IntEnable;                       // Set to true/false to enable/
	// disable interrupts
} AESEncryptStore;

AESEncryptStore mykeyStore ={
	       { 0x2B, 0x7E, 0x15, 0x16, 0x28, 0xAE, 0xD2, 0xA6,
	       0xAB, 0xF7, 0x15, 0x88, 0x09, 0xCF, 0x4F, 0x3C },
	       CRYPTOCC26XX_KEY_0,
	       { 0x6B, 0xC1, 0xBE, 0xE2, 0x2E, 0x40, 0x9F, 0x96,
	       0xE9, 0x3D, 0x7E, 0x11, 0x73, 0x93, 0x17, 0x2A },
	       { 0x3A, 0xD7, 0x7B, 0xB4, 0x0D, 0x7A, 0x36, 0x60,
	       0xA8, 0x9E, 0xCA, 0xF3, 0x24, 0x66, 0xEF, 0x97 },
	       true,
	   };
CryptoCC26XX_Handle      handle;
CryptoCC26XX_Params      params;
bool                     exclusiveAccess = false;
int                         keyIndex;
CryptoCC26XX_AESECB_Transaction trans;



Inside a task

	if (!handle)
	{
		System_printf("CryptoCC26XX did not open");
		System_flush();

	}
	else
	{
		System_printf("Entering else block");
		System_flush();
		keyIndex = CryptoCC26XX_allocateKey(handle, mykeyStore.ui8AESKeyLocation,(const uint32_t *) mykeyStore.ui8AESKey);
		if (keyIndex != CRYPTOCC26XX_STATUS_ERROR)
		{
			// Setup transaction
			trans.keyIndex         = keyIndex;
			trans.msgIn            = (uint32_t *) mykeyStore.ui8AESClearText;
			trans.msgOut           = (uint32_t *) mykeyStore.ui8AESMsgOut;
			// Do AES-ECB operation
			CryptoCC26XX_transact(handle, (CryptoCC26XX_Transaction *) &trans);
			CryptoCC26XX_releaseKey(handle,&keyIndex);
			System_printf("Before encryption %s",(uint32_t *) mykeyStore.ui8AESClearText);
			System_printf(" After %s",(uint32_t *) mykeyStore.ui8AESMsgOut);
                        System_flush();
		}
		else
	{
			System_printf("Key Location was not allocated.");
		}
	}

The code reaches the CryptoCC26XX_transact line and crashes after that, debugger when stepped into shows few registers and values, but it never returns from that function.

I just took the code verbatim from #include <ti/drivers/crypto/CryptoCC26XX.h> as advised. I made the data type of KeyIndex as int,since compiler was warning the comparison is futile since u_int8 was being compared against a negative number.

Can you advise what is incorrect in the above code?