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Faster signing, smoother progressbar.

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Most time in signing transaction on the Trezor side is spent
in layoutProgress.  This patch reduces the calls to this functions.
We also compute the progress differently, reserving 50 % for downloading
input transactions and 50 % for the signing process.  This gives a
smoother experience if the input transactions are large.
This commit is contained in:
Jochen Hoenicke 2015-02-25 16:23:24 +01:00
parent ad6fc7b5a7
commit 5d8135be1a
1 changed files with 28 additions and 24 deletions
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52
firmware/signing.c
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@ -51,10 +51,15 @@ static uint8_t hash[32], hash_check[32], privkey[32], pubkey[33], sig[64];
static uint64_t to_spend, spending, change_spend;
const uint32_t version = 1;
const uint32_t lock_time = 0;
static uint32_t progress, progress_total;
static uint32_t progress, progress_step, progress_meta_step;
static bool multisig_fp_set, multisig_fp_mismatch;
static uint8_t multisig_fp[32];
/* progress_step/meta_step are fixed point numbers, giving the
* progress per input in permille with these many additional bits.
*/
#define PROGRESS_PRECISION 16
/*
Workflow of streamed signing
@ -117,7 +122,6 @@ foreach O (idx1):
void send_req_1_input(void)
{
layoutProgress("Signing transaction", 1000 * progress / progress_total);
signing_stage = STAGE_REQUEST_1_INPUT;
resp.has_request_type = true;
resp.request_type = RequestType_TXINPUT;
@ -129,7 +133,6 @@ void send_req_1_input(void)
void send_req_2_prev_meta(void)
{
layoutProgress("Signing transaction", 1000 * progress / progress_total);
signing_stage = STAGE_REQUEST_2_PREV_META;
resp.has_request_type = true;
resp.request_type = RequestType_TXMETA;
@ -142,7 +145,6 @@ void send_req_2_prev_meta(void)
void send_req_2_prev_input(void)
{
layoutProgress("Signing transaction", 1000 * progress / progress_total);
signing_stage = STAGE_REQUEST_2_PREV_INPUT;
resp.has_request_type = true;
resp.request_type = RequestType_TXINPUT;
@ -157,7 +159,6 @@ void send_req_2_prev_input(void)
void send_req_2_prev_output(void)
{
layoutProgress("Signing transaction", 1000 * progress / progress_total);
signing_stage = STAGE_REQUEST_2_PREV_OUTPUT;
resp.has_request_type = true;
resp.request_type = RequestType_TXOUTPUT;
@ -172,7 +173,6 @@ void send_req_2_prev_output(void)
void send_req_3_output(void)
{
layoutProgress("Signing transaction", 1000 * progress / progress_total);
signing_stage = STAGE_REQUEST_3_OUTPUT;
resp.has_request_type = true;
resp.request_type = RequestType_TXOUTPUT;
@ -184,7 +184,6 @@ void send_req_3_output(void)
void send_req_4_input(void)
{
layoutProgress("Signing transaction", 1000 * progress / progress_total);
signing_stage = STAGE_REQUEST_4_INPUT;
resp.has_request_type = true;
resp.request_type = RequestType_TXINPUT;
@ -196,7 +195,6 @@ void send_req_4_input(void)
void send_req_4_output(void)
{
layoutProgress("Signing transaction", 1000 * progress / progress_total);
signing_stage = STAGE_REQUEST_4_OUTPUT;
resp.has_request_type = true;
resp.request_type = RequestType_TXOUTPUT;
@ -208,7 +206,6 @@ void send_req_4_output(void)
void send_req_5_output(void)
{
layoutProgress("Signing transaction", 1000 * progress / progress_total);
signing_stage = STAGE_REQUEST_5_OUTPUT;
resp.has_request_type = true;
resp.request_type = RequestType_TXOUTPUT;
@ -220,7 +217,6 @@ void send_req_5_output(void)
void send_req_finished(void)
{
layoutProgress("Signing transaction", 1000 * progress / progress_total);
resp.has_request_type = true;
resp.request_type = RequestType_TXFINISHED;
msg_write(MessageType_MessageType_TxRequest, &resp);
@ -241,8 +237,10 @@ void signing_init(uint32_t _inputs_count, uint32_t _outputs_count, const CoinTyp
memset(&resp, 0, sizeof(TxRequest));
signing = true;
progress = 1;
progress_total = inputs_count * (1 + inputs_count + outputs_count) + outputs_count + 1;
progress = 0;
// we step by 500/inputs_count per input in phase1 and phase2
// this means 50 % per phase.
progress_step = (500 << PROGRESS_PRECISION) / inputs_count;
multisig_fp_set = false;
multisig_fp_mismatch = false;
@ -263,14 +261,17 @@ void signing_txack(TransactionType *tx)
return;
}
layoutProgress("Signing transaction", 1000 * progress / progress_total);
static int update_ctr = 0;
if (update_ctr++ == 50) {
layoutProgress("Signing transaction", progress);
update_ctr = 0;
}
int co;
memset(&resp, 0, sizeof(TxRequest));
switch (signing_stage) {
case STAGE_REQUEST_1_INPUT:
progress++;
/* compute multisig fingerprint */
/* (if all input share the same fingerprint, outputs having the same fingerprint will be considered as change outputs) */
if (tx->inputs[0].script_type == InputScriptType_SPENDMULTISIG &&
@ -304,10 +305,12 @@ void signing_txack(TransactionType *tx)
return;
case STAGE_REQUEST_2_PREV_META:
tx_init(&tp, tx->inputs_cnt, tx->outputs_cnt, tx->version, tx->lock_time, false);
progress_meta_step = progress_step / (tp.inputs_len + tp.outputs_len);
idx2 = 0;
send_req_2_prev_input();
return;
case STAGE_REQUEST_2_PREV_INPUT:
progress = (idx1 * progress_step + idx2 * progress_meta_step) >> PROGRESS_PRECISION;
if (!tx_serialize_input_hash(&tp, tx->inputs)) {
fsm_sendFailure(FailureType_Failure_Other, "Failed to serialize input");
signing_abort();
@ -322,6 +325,7 @@ void signing_txack(TransactionType *tx)
}
return;
case STAGE_REQUEST_2_PREV_OUTPUT:
progress = (idx1 * progress_step + (tp.inputs_len + idx2) * progress_meta_step) >> PROGRESS_PRECISION;
if (!tx_serialize_output_hash(&tp, tx->bin_outputs)) {
fsm_sendFailure(FailureType_Failure_Other, "Failed to serialize output");
signing_abort();
@ -371,10 +375,10 @@ void signing_txack(TransactionType *tx)
is_change = true;
}
} else
if (tx->outputs[0].script_type == OutputScriptType_PAYTOADDRESS &&
tx->outputs[0].address_n_count > 0) {
is_change = true;
}
if (tx->outputs[0].script_type == OutputScriptType_PAYTOADDRESS &&
tx->outputs[0].address_n_count > 0) {
is_change = true;
}
if (is_change) {
if (change_spend == 0) { // not set
@ -388,9 +392,6 @@ void signing_txack(TransactionType *tx)
spending += tx->outputs[0].amount;
co = compile_output(coin, root, tx->outputs, &bin_output, !is_change);
if (!is_change) {
layoutProgress("Signing transaction", 1000 * progress / progress_total);
}
if (co < 0) {
fsm_sendFailure(FailureType_Failure_Other, "Signing cancelled by user");
signing_abort();
@ -436,6 +437,7 @@ void signing_txack(TransactionType *tx)
}
// Everything was checked, now phase 2 begins and the transaction is signed.
progress_meta_step = progress_step / (inputs_count + outputs_count);
idx1 = 0;
idx2 = 0;
send_req_4_input();
@ -443,13 +445,13 @@ void signing_txack(TransactionType *tx)
return;
}
case STAGE_REQUEST_4_INPUT:
progress = 500 + ((idx1 * progress_step + idx2 * progress_meta_step) >> PROGRESS_PRECISION);
if (idx2 == 0) {
tx_init(&ti, inputs_count, outputs_count, version, lock_time, true);
tx_init(&tc, inputs_count, outputs_count, version, lock_time, false);
memset(privkey, 0, 32);
memset(pubkey, 0, 33);
}
progress++;
if (!tx_serialize_input_hash(&tc, tx->inputs)) {
fsm_sendFailure(FailureType_Failure_Other, "Failed to serialize input");
signing_abort();
@ -498,7 +500,7 @@ void signing_txack(TransactionType *tx)
}
return;
case STAGE_REQUEST_4_OUTPUT:
progress++;
progress = 500 + ((idx1 * progress_step + (inputs_count + idx2) * progress_meta_step) >> PROGRESS_PRECISION);
co = compile_output(coin, root, tx->outputs, &bin_output, false);
if (co < 0) {
fsm_sendFailure(FailureType_Failure_Other, "Signing cancelled by user");
@ -562,6 +564,9 @@ void signing_txack(TransactionType *tx)
input.script_sig.size = serialize_script_sig(resp.serialized.signature.bytes, resp.serialized.signature.size, pubkey, 33, input.script_sig.bytes);
}
resp.serialized.serialized_tx.size = tx_serialize_input(&to, &input, resp.serialized.serialized_tx.bytes);
// since this took a longer time, update progress
layoutProgress("Signing transaction", progress);
update_ctr = 0;
if (idx1 < inputs_count - 1) {
idx1++;
idx2 = 0;
@ -573,7 +578,6 @@ void signing_txack(TransactionType *tx)
}
return;
case STAGE_REQUEST_5_OUTPUT:
progress++;
if (compile_output(coin, root, tx->outputs, &bin_output,false) <= 0) {
fsm_sendFailure(FailureType_Failure_Other, "Failed to compile output");
signing_abort();