fsl_shw_return_t fsl_shw_read_key(fsl_shw_uco_t * user_ctx,
fsl_shw_sko_t * key_info, uint8_t * key)
{
fsl_shw_return_t ret = FSL_RETURN_INTERNAL_ERROR_S;
/* Only blocking mode calls are supported */
if (!(user_ctx->flags & FSL_UCO_BLOCKING_MODE)) {
ret = FSL_RETURN_BAD_FLAG_S;
goto out;
}
printk("Reading a key\n");
#ifdef DIAG_SECURITY_FUNC
LOG_DIAG("Reading a key");
#endif
if (key_info->flags & FSL_SKO_KEY_PRESENT) {
memcpy(key_info->key, key, key_info->key_length);
ret = FSL_RETURN_OK_S;
} else if (key_info->flags & FSL_SKO_KEY_ESTABLISHED) {
printk("key established\n");
if (key_info->keystore == NULL) {
printk("keystore is null\n");
/* First verify that the key access is valid */
ret =
system_keystore.slot_verify_access(system_keystore.
user_data,
key_info->userid,
key_info->
handle);
printk("key in system keystore\n");
/* Key is in system keystore */
ret = keystore_slot_read(&system_keystore,
key_info->userid,
key_info->handle,
key_info->key_length, key);
} else {
printk("key goes in user keystore.\n");
/* Key goes in user keystore */
ret = keystore_slot_read(key_info->keystore,
key_info->userid,
key_info->handle,
key_info->key_length, key);
}
}
out:
return ret;
} /* end fn fsl_shw_read_key */
fsl_shw_return_t fsl_shw_read_key(fsl_shw_uco_t * user_ctx,
fsl_shw_sko_t * key_info, uint8_t * key)
{
SAH_SF_DCLS;
SAH_SF_USER_CHECK();
if (!(key_info->flags & FSL_SKO_KEY_ESTABLISHED)
|| !(key_info->flags & FSL_SKO_KEY_SW_KEY)) {
ret = FSL_RETURN_BAD_FLAG_S;
goto out;
}
if (key_info->keystore == NULL) {
/* Key lives in system keystore */
ret = do_system_keystore_slot_read(user_ctx,
key_info->userid,
key_info->handle,
key_info->key_length, key);
} else {
/* Key lives in user keystore */
ret = keystore_slot_read(key_info->keystore,
key_info->userid,
key_info->handle,
key_info->key_length, key);
}
out:
SAH_SF_DESC_CLEAN();
return ret;
}
fsl_shw_return_t do_system_keystore_slot_read(fsl_shw_uco_t * user_ctx,
uint64_t ownerid,
uint32_t slot,
uint32_t key_length,
const uint8_t * key)
{
(void)user_ctx;
return keystore_slot_read(&system_keystore, ownerid, slot,
key_length, (void *)key);
}
