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When a key is generated and stored, it creates its PRKD.

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Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
This commit is contained in:
Pol Henarejos 2023-11-13 15:33:27 +01:00
parent 4d47f0224e
commit e96e1d0097
No known key found for this signature in database
GPG key ID: C0095B7870A4CCD3
2 changed files with 21 additions and 0 deletions
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8
src/hsm/cvc.h
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@ -94,4 +94,12 @@ extern size_t asn1_build_prkd_aes(const uint8_t *label,
size_t keysize,
uint8_t *buf,
size_t buf_len);
extern size_t asn1_build_prkd_generic(const uint8_t *label,
size_t label_len,
const uint8_t *keyid,
size_t keyid_len,
size_t keysize,
int key_tpe,
uint8_t *buf,
size_t buf_len);
#endif

13
src/hsm/sc_hsm.c
View file

@ -539,6 +539,19 @@ int store_keys(void *key_ctx, int type, uint8_t key_id) {
if (r != CCID_OK) {
return r;
}
char key_id_str[4] = {0};
sprintf(key_id_str, "%u", key_id);
if (type & PICO_KEYS_KEY_EC) {
key_size--;
}
size_t prkd_len = asn1_build_prkd_generic(NULL, 0, (uint8_t *)key_id_str, strlen(key_id_str), key_size * 8, type, kdata, sizeof(kdata));
if (prkd_len > 0) {
fpk = file_new((PRKD_PREFIX << 8) | key_id);
r = flash_write_data_to_file(fpk, kdata, prkd_len);
if (r != 0) {
return SW_EXEC_ERROR();
}
}
low_flash_available();
return CCID_OK;
}