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Added key usage counter to decryption operations.

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Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
This commit is contained in:
Pol Henarejos
2022-06-03 20:13:18 +02:00
parent 40efcd71c3
commit 4bf5a80a7a
1 changed files with 3 additions and 0 deletions
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3
src/hsm/sc_hsm.c
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@@ -1637,6 +1637,8 @@ static int cmd_decrypt_asym() {
file_t *ef = search_dynamic_file((KEY_PREFIX << 8) | key_id); file_t *ef = search_dynamic_file((KEY_PREFIX << 8) | key_id);
if (!ef) if (!ef)
return SW_FILE_NOT_FOUND(); return SW_FILE_NOT_FOUND();
if (get_key_counter(ef) == 0)
return SW_FILE_FULL();
if (P2(apdu) == ALGO_RSA_DECRYPT) { if (P2(apdu) == ALGO_RSA_DECRYPT) {
mbedtls_rsa_context ctx; mbedtls_rsa_context ctx;
mbedtls_rsa_init(&ctx); mbedtls_rsa_init(&ctx);
@@ -1702,6 +1704,7 @@ static int cmd_decrypt_asym() {
} }
else else
return SW_WRONG_P1P2(); return SW_WRONG_P1P2();
decrement_key_counter(ef);
return SW_OK(); return SW_OK();
} }