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Adding increment of signature counter.

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Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
This commit is contained in:
Pol Henarejos
2022-04-26 16:38:23 +02:00
parent 30e5f12b25
commit b0b30aff3a
1 changed files with 19 additions and 0 deletions
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19
src/openpgp/openpgp.c
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@@ -297,6 +297,23 @@ int parse_ch_data(const file_t *f, int mode) {
return lpdif+4;
}
int inc_sig_count() {
uint32_t counter = 0;
uint8_t *p = NULL;
file_t *ef = search_by_fid(EF_SIG_COUNT, NULL, SPECIFY_ANY);
if (!ef || !ef->data)
return CCID_ERR_FILE_NOT_FOUND;
p = file_read(ef->data);
counter = (p[0] << 16) | (p[1] << 8) | p[2];
counter++;
uint8_t q[3] = { (counter>>16) & 0xff, (counter>>8) & 0xff, counter&0xff };
int r = flash_write_data_to_file(ef, q, sizeof(q));
if (r != CCID_OK)
return CCID_EXEC_ERROR;
low_flash_available();
return CCID_OK;
}
int parse_sec_tpl(const file_t *f, int mode) {
res_APDU[res_APDU_size++] = EF_SEC_TPL & 0xff;
res_APDU[res_APDU_size++] = 5;
@@ -1102,6 +1119,7 @@ int rsa_sign(mbedtls_rsa_context *ctx, const uint8_t *data, size_t data_len, uin
free(signature);
}
*out_len = key_size;
inc_sig_count();
return r;
}
@@ -1129,6 +1147,7 @@ int ecdsa_sign(mbedtls_ecdsa_context *ctx, const uint8_t *data, size_t data_len,
}
mbedtls_mpi_free(&ri);
mbedtls_mpi_free(&si);
inc_sig_count();
return r;
}