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cryptochip: check if the device is configured before continuing 

RNG and encryption operations won't work unless the cryptochip is configured
for TLS operations. Print a warning if the chip hasn't been configured yet.

https://jira.digi.com/browse/DEL-5710

Signed-off-by: Gabriel Valcazar <gabriel.valcazar@digi.com>
This commit is contained in:
Gabriel Valcazar 2018-02-16 17:40:31 +01:00
parent 9cf9701082
commit a2a5d119b9
1 changed files with 10 additions and 0 deletions
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10
cryptochip-get-random/main.c
View File

@ -22,9 +22,19 @@
int main(void) int main(void)
{ {
uint8_t random_number[32]; uint8_t random_number[32];
bool is_locked = false;
atcab_init(&cfg_ateccx08a_i2c_default); atcab_init(&cfg_ateccx08a_i2c_default);
/* Check if config zone is locked */
atcab_is_locked(LOCK_ZONE_CONFIG, &is_locked);
if (!is_locked) {
printf("**WARNING**: the cryptochip is currently not configured. Run "
"ecc-test-main at least once to be able to run this example.\n");
atcab_release();
return 1;
}
while (true) { while (true) {
atcab_random(random_number); atcab_random(random_number);
write(STDOUT_FILENO, random_number, sizeof(random_number)); write(STDOUT_FILENO, random_number, sizeof(random_number));