HDNode *fsm_getRootNode(void)
{
static HDNode node;
if (!storage_getRootNode(&node)) {
layoutHome();
fsm_sendFailure(FailureType_Failure_NotInitialized, "Device not initialized or passphrase request cancelled");
return 0;
}
return &node;
}
const HDNode *fsm_getDerivedNode(uint32_t *address_n, size_t address_n_count)
{
static HDNode node;
if (!storage_getRootNode(&node)) {
fsm_sendFailure(FailureType_Failure_NotInitialized, "Device not initialized or passphrase request cancelled");
layoutHome();
return 0;
}
if (!address_n || address_n_count == 0) {
return &node;
}
if (hdnode_private_ckd_cached(&node, address_n, address_n_count) == 0) {
fsm_sendFailure(FailureType_Failure_Other, "Failed to derive private key");
layoutHome();
return 0;
}
return &node;
}
static HDNode *fsm_getDerivedNode(const char *curve, const uint32_t *address_n, size_t address_n_count, uint32_t *fingerprint)
{
static CONFIDENTIAL HDNode node;
if (fingerprint) {
*fingerprint = 0;
}
if (!storage_getRootNode(&node, curve, true)) {
fsm_sendFailure(Failure_FailureType_Failure_NotInitialized, _("Device not initialized or passphrase request cancelled or unsupported curve"));
layoutHome();
return 0;
}
if (!address_n || address_n_count == 0) {
return &node;
}
if (hdnode_private_ckd_cached(&node, address_n, address_n_count, fingerprint) == 0) {
fsm_sendFailure(Failure_FailureType_Failure_ProcessError, _("Failed to derive private key"));
layoutHome();
return 0;
}
return &node;
}