High-level security tool box.
High-level security tool box for ARM7 with crypto engine (SAM7XC)
Copyright (c) 2013-2018 Microchip Technology Inc. and its subsidiaries.
Copyright (c) 2014-2018 Microchip Technology Inc. and its subsidiaries.
#include <string.h>
#include "pal.h"
#include "tal.h"
#include "ieee_const.h"
#include "stb.h"
#include "sal.h"
#include "stb_internal.h"
Macros | |
#define | NO_HDR_MIC (0x00) |
Functions | |
stb_ccm_t | stb_ccm_secure (uint8_t *buffer, uint8_t nonce[AES_BLOCKSIZE], uint8_t *key, uint8_t hdr_len, uint8_t pld_len, uint8_t sec_level, uint8_t aes_dir) |
Secure one block with CCM*. More... | |
void | stb_init (void) |
STB Initialization. More... | |
void | stb_restart (void) |
STB Restart. More... | |
Variables | |
static bool | key_change = true |
static uint8_t | last_key [AES_BLOCKSIZE] |
static bool | stb_restart_required = false |
#define NO_HDR_MIC (0x00) |
stb_ccm_t stb_ccm_secure | ( | uint8_t * | buffer, |
uint8_t | nonce[AES_BLOCKSIZE], | ||
uint8_t * | key, | ||
uint8_t | hdr_len, | ||
uint8_t | pld_len, | ||
uint8_t | sec_level, | ||
uint8_t | aes_dir | ||
) |
Secure one block with CCM*.
This functions secures one block with CCM* according to 802.15.4.
[in,out] | buffer | Input: plaintext header and payload concatenated; for encryption: MUST HAVE 'AES_BLOCKSIZE' BYTES SPACE AT THE END FOR THE MIC! Output: frame secured (with MIC at end)/unsecured |
[in] | nonce | The nonce: Initialization Vector (IV) as used in cryptography; the ZigBee nonce (13 bytes long) are the bytes 2...14 of this nonce |
[in] | key | The key to be used; if NULL, use the current key |
[in] | hdr_len | Length of plain text header (will not be encrypted) |
[in] | pld_len | Length of payload to be encrypted; if 0, then only MIC authentication implies |
[in] | sec_level | Security level according to IEEE 802.15.4, 7.6.2.2.1, Table 95:
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[in] | aes_dir | AES_DIR_ENCRYPT if secure, AES_DIR_DECRYPT if unsecured |
References AES_BLOCKSIZE, AES_DIR_ENCRYPT, AES_KEYSIZE, AES_MODE_ECB, aMaxPHYPacketSize, compute_mic(), encrypt_pldmic(), i, key_change, last_key, NULL, sal_aes_clean_up, sal_aes_restart(), sal_aes_setup(), stb_restart_required, tal_trx_status, tal_trx_wakeup(), and TRX_SLEEP.
void stb_init | ( | void | ) |
STB Initialization.
This function initializes the STB.
References sal_init().
Referenced by mac_init().
void stb_restart | ( | void | ) |
STB Restart.
This function re-starts the STB after power down.
References stb_restart_required.
Referenced by tal_trx_sleep(), and trx_reset().
Referenced by stb_ccm_secure().
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static |
Referenced by stb_ccm_secure().
Referenced by stb_ccm_secure(), and stb_restart().