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update zephyr

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liquidraver
2026-03-23 08:56:21 +01:00
parent 249a446877
commit c9013d85d4
12 changed files with 266 additions and 171 deletions
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zephcore/helpers/TransportKeyStore.cpp
+26 -12
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@@ -5,11 +5,10 @@
#include "TransportKeyStore.h"
#include <string.h>
#include <mbedtls/sha256.h>
#include <mbedtls/md.h>
#include <psa/crypto.h>
uint16_t TransportKey::calcTransportCode(const mesh::Packet* packet) const {
/* HMAC-SHA256 using mbedTLS */
/* HMAC-SHA256 using PSA Crypto */
uint8_t hmac[32];
uint8_t type = packet->getPayloadType();
@@ -19,14 +18,27 @@ uint16_t TransportKey::calcTransportCode(const mesh::Packet* packet) const {
memcpy(&msg[1], packet->payload, packet->payload_len);
size_t msg_len = 1 + packet->payload_len;
/* Calculate HMAC-SHA256 */
mbedtls_md_context_t ctx;
mbedtls_md_init(&ctx);
mbedtls_md_setup(&ctx, mbedtls_md_info_from_type(MBEDTLS_MD_SHA256), 1);
mbedtls_md_hmac_starts(&ctx, key, sizeof(key));
mbedtls_md_hmac_update(&ctx, msg, msg_len);
mbedtls_md_hmac_finish(&ctx, hmac);
mbedtls_md_free(&ctx);
/* Import HMAC key */
psa_key_attributes_t attr = PSA_KEY_ATTRIBUTES_INIT;
psa_set_key_type(&attr, PSA_KEY_TYPE_HMAC);
psa_set_key_bits(&attr, sizeof(key) * 8);
psa_set_key_usage_flags(&attr, PSA_KEY_USAGE_SIGN_MESSAGE);
psa_set_key_algorithm(&attr, PSA_ALG_HMAC(PSA_ALG_SHA_256));
psa_key_id_t key_id;
psa_status_t status = psa_import_key(&attr, key, sizeof(key), &key_id);
if (status != PSA_SUCCESS) {
return 0;
}
size_t out_len;
status = psa_mac_compute(key_id, PSA_ALG_HMAC(PSA_ALG_SHA_256),
msg, msg_len, hmac, sizeof(hmac), &out_len);
psa_destroy_key(key_id);
if (status != PSA_SUCCESS) {
return 0;
}
/* Extract first 2 bytes as transport code (little-endian, matching Arduino SHA256 finalizeHMAC behavior) */
uint16_t code = (uint16_t)hmac[0] | ((uint16_t)hmac[1] << 8);
@@ -66,7 +78,9 @@ void TransportKeyStore::getAutoKeyFor(uint16_t id, const char* name, TransportKe
// calc key for publicly-known hashtag region name (SHA256 hash, first 16 bytes)
uint8_t hash[32];
mbedtls_sha256((const unsigned char*)name, strlen(name), hash, 0);
size_t out_len;
psa_hash_compute(PSA_ALG_SHA_256, (const uint8_t*)name, strlen(name),
hash, sizeof(hash), &out_len);
memcpy(dest.key, hash, sizeof(dest.key));
putCache(id, dest);