CK_RV C_DecryptInit(CK_SESSION_HANDLE hSession, /* the session's handle */
CK_MECHANISM_PTR pMechanism, /* the decryption mechanism */
CK_OBJECT_HANDLE hKey)
{ /* handle of the decryption key */
CK_BBOOL can_decrypt, can_unwrap;
CK_KEY_TYPE key_type;
CK_ATTRIBUTE decrypt_attribute = { CKA_DECRYPT, &can_decrypt, sizeof(can_decrypt) };
CK_ATTRIBUTE key_type_attr = { CKA_KEY_TYPE, &key_type, sizeof(key_type) };
CK_ATTRIBUTE unwrap_attribute = { CKA_UNWRAP, &can_unwrap, sizeof(can_unwrap) };
struct sc_pkcs11_session *session;
struct sc_pkcs11_object *object;
CK_RV rv;
if (pMechanism == NULL_PTR)
return CKR_ARGUMENTS_BAD;
rv = sc_pkcs11_lock();
if (rv != CKR_OK)
return rv;
rv = get_object_from_session(hSession, hKey, &session, &object);
if (rv != CKR_OK) {
if (rv == CKR_OBJECT_HANDLE_INVALID)
rv = CKR_KEY_HANDLE_INVALID;
goto out;
}
if (object->ops->decrypt == NULL_PTR) {
rv = CKR_KEY_TYPE_INCONSISTENT;
goto out;
}
rv = object->ops->get_attribute(session, object, &decrypt_attribute);
if (rv != CKR_OK || !can_decrypt) {
/* Also accept UNWRAP - apps call Decrypt when they mean Unwrap */
rv = object->ops->get_attribute(session, object, &unwrap_attribute);
if (rv != CKR_OK || !can_unwrap) {
rv = CKR_KEY_TYPE_INCONSISTENT;
goto out;
}
}
rv = object->ops->get_attribute(session, object, &key_type_attr);
if (rv != CKR_OK) {
rv = CKR_KEY_TYPE_INCONSISTENT;
goto out;
}
rv = sc_pkcs11_decr_init(session, pMechanism, object, key_type);
out:
sc_log(context, "C_DecryptInit() = %s", lookup_enum ( RV_T, rv ));
sc_pkcs11_unlock();
return rv;
}
CK_RV C_DecryptInit(CK_SESSION_HANDLE hSession, /* the session's handle */
CK_MECHANISM_PTR pMechanism, /* the decryption mechanism */
CK_OBJECT_HANDLE hKey) /* handle of the decryption key */
{
CK_BBOOL can_decrypt;
CK_KEY_TYPE key_type;
CK_ATTRIBUTE decrypt_attribute = { CKA_DECRYPT, &can_decrypt, sizeof(can_decrypt) };
CK_ATTRIBUTE key_type_attr = { CKA_KEY_TYPE, &key_type, sizeof(key_type) };
struct sc_pkcs11_session *session;
struct sc_pkcs11_object *object;
int rv;
rv = sc_pkcs11_lock();
if (rv != CKR_OK)
return rv;
rv = pool_find(&session_pool, hSession, (void**) &session);
if (rv != CKR_OK)
goto out;
rv = pool_find(&session->slot->object_pool, hKey, (void**) &object);
if (rv != CKR_OK)
goto out;
if (object->ops->decrypt == NULL_PTR) {
rv = CKR_KEY_TYPE_INCONSISTENT;
goto out;
}
rv = object->ops->get_attribute(session, object, &decrypt_attribute);
if (rv != CKR_OK || !can_decrypt) {
rv = CKR_KEY_TYPE_INCONSISTENT;
goto out;
}
rv = object->ops->get_attribute(session, object, &key_type_attr);
if (rv != CKR_OK) {
rv = CKR_KEY_TYPE_INCONSISTENT;
goto out;
}
rv = sc_pkcs11_decr_init(session, pMechanism, object, key_type);
out: sc_debug(context, "Decrypt initialization returns %d\n", rv);
sc_pkcs11_unlock();
return rv;
}
