e66e87aa8e
This is Atmel/Microchip's official library for interfacing to the Atmel ATECC508 chip. The submodule points to their repository in GitHub. Additionally, this includes the HAL necessary to use this library in esp_open_rtos using the i2c library in extras/i2c. I have also included a tool I wrote to play with the chip as an example under examples/atcatool. The extras module currently overrides atca_iface.h to fix bug in cryptoauthlib (c11-only feature, which breaks c++ builds that want to use cryptoauthlib)
59 lines
1.7 KiB
C
59 lines
1.7 KiB
C
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#include "uart_cmds.h"
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#include <stdint.h>
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#include <sys/types.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <esp8266.h>
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#include <esp/uart.h>
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#include <stdio.h>
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#include "FreeRTOS.h"
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#include "task.h"
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// get cert and priv key
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//> openssl req -new -x509 -nodes -newkey ec:<(openssl ecparam -name secp256r1) -keyout cert.key -out cert.crt -days 3650
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// get pub key
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//> openssl x509 -in cert.crt -pubkey -noout > pubkey.pem
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ATCA_STATUS cmd_pub(uint32_t argc, char *argv[])
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{
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ATCA_STATUS status;
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if (argc >= 2) {
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uint8_t slot_num = atoi(argv[1]);
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if (slot_num < 0x8 || slot_num > 0xF){
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LOG("Invalid slot number %d; must be between 8 and 15 for public keys", slot_num);
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return ATCA_BAD_PARAM;
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}
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printf("Programming public key in slot %d\n", slot_num);
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uint8_t pubkeybytes[100];
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int pubkeylen = sizeof(pubkeybytes);
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status = read_pubkey_stdin(pubkeybytes, &pubkeylen);
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if (status != ATCA_SUCCESS)
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{
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RETURN(status, "Failed to read public key");
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}
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LOG("Got valid looking pubkey; does this look correct?");
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uint8_t *keyptr = pubkeybytes + (pubkeylen - ATCA_PUB_KEY_SIZE);
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atcab_printbin_label((const uint8_t*)"pubkey ", keyptr, ATCA_PUB_KEY_SIZE);
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if (!prompt_user()) {
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printf("Aborting\n");
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}else{
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printf("Writing key\n");
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}
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// Write key to device
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status = atcab_write_pubkey(slot_num, keyptr);
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if(status != ATCA_SUCCESS){
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RETURN(status, "Failed to write key to slot");
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}
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return ATCA_SUCCESS;
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} else {
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printf("Error: missing slot number.\n");
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return ATCA_BAD_PARAM;
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}
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}
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