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onion-wownero-explorer
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js refactored

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master
moneroexamples 7 years ago
parent d27904098d
commit 2f0e1c14e7
1 changed files with 99 additions and 109 deletions
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208
src/templates/partials/tx_details.html
Unescape Escape View File

@ -44,15 +44,6 @@
<td>Tx version: {{tx_version}}</td>
<td>No of confirmations: {{confirmations}}</td>
<td>RingCT/type: {{#is_ringct}}yes/{{rct_type}}{{/is_ringct}}{{^is_ringct}}no{{/is_ringct}}</td>
{{#enable_js}}
<!-- the hidden filed is used in JavaScriped based decoding and proving txs -->
<input type="hidden" id="is_ringct" value="{{#is_ringct}}yes{{/is_ringct}}{{^is_ringct}}no{{/is_ringct}}"/>
<input type="hidden" id="ringct_type" value="{{rct_type}}"/>
{{/enable_js}}
</tr>
@ -79,13 +70,6 @@
<td>{{amount_idx}} of {{num_outputs}}</td>
</tr>
{{/outputs}}
{{#enable_js}}
<!-- the hidden filed is used in JavaScriped based decoding and proving txs -->
<input type="hidden" id="tx_outputs" value="{{#outputs}}{{unformated_output_idx}},{{out_pub_key}},{{amount}};{{/outputs}}"/>
{{/enable_js}}
</table>
</div>
@ -170,49 +154,6 @@
// to decode and prove txs.
$(document).ready(function() {
var H = "8b655970153799af2aeadc9ff1add0ea6c7251d54154cfa92c173a0dd39c1f94";
//decode amount and mask and check against commitment
// from https://xmr.llcoins.net/js/site.js
function decodeRct(rv, i, der){
var key = derivation_to_scalar(der, i);
var ecdh = decode_rct_ecdh(rv.ecdhInfo[i], key);
console.log(ecdh);
var Ctmp = commit(ecdh.amount, ecdh.mask);
console.log(Ctmp);
if (Ctmp !== rv.outPk[i]){
throw "mismatched commitments!";
}
ecdh.amount = s2d(ecdh.amount);
return ecdh;
}
//creates a Pedersen commitment from an amount (in scalar form) and a mask
//C = bG + aH where b = mask, a = amount
// from https://xmr.llcoins.net/js/site.js
function commit(amount, mask){
if (!valid_hex(mask) || mask.length !== 64 || !valid_hex(amount) || amount.length !== 64){
throw "invalid amount or mask!";
}
var C = ge_double_scalarmult_base_vartime(amount, H, mask);
return C;
}
// // from https://xmr.llcoins.net/js/site.js
function s2d(scalar){
return JSBigInt.parse(swapEndian(scalar), 16).toString();
}
//switch byte order for hex string
// from https://xmr.llcoins.net/js/site.js
function swapEndian(hex){
if (hex.length % 2 !== 0){return "length must be a multiple of 2!";}
var data = "";
for (var i=1; i <= hex.length / 2; i++){
data += hex.substr(0 - 2 * i, 2);
}
return data;
}
// we need output pubplic keys, their indexes and amounts.
// all this is already avaliable on the html, but we can use
@ -220,11 +161,6 @@
var tx_json = {{#tx_json_raw}}{{/tx_json_raw}};
//console.log(tx_json);
var is_rct = ($("#is_ringct").val() === "yes");
var rct_type = parseInt($("#ringct_type").val());
var tx_public_key = $("#tx_pub_key").text();
// get the tx publick key outputs from the hidden field
@ -236,86 +172,140 @@
tx_outputs.push(tx_outputs_tmp[i].split(','));
}
console.log(is_rct, rct_type, tx_outputs);
//console.log(is_rct, rct_type, tx_outputs);
$("#decode_btn").click(function() {
$("#decode_btn").click(function() {
var address = $("input[name=xmr_address]").val();
var viewkey = $("input[name=viewkey]").val();
var address_decoded = decode_address(address);
var key_derivation = generate_key_derivation(tx_public_key, viewkey);
decodeOutputs(tx_json, tx_public_key, viewkey, address_decoded.spend);
});
console.log(tx_public_key, address, viewkey, key_derivation);
$("#prove_btn").click(function() {
$("#decode-prove-results").html("Prove button pressed");
console.log(address_decoded);
var address = $("input[name=xmraddress]").val();
var tx_prv_key = $("input[name=txprvkey]").val();
// go over each tx output, and check if it is ours or not
var decoding_results_str = '<h4>Output decoding results</h4>';
var address_decoded = decode_address(address);
decoding_results_str += '<table class="center">';
decodeOutputs(tx_json, address_decoded.view, tx_prv_key, address_decoded.spend);
tx_outputs.forEach(function(output) {
});
var output_idx = parseInt(output[0]);
var output_pub_key = output[1];
var amount = parseInt(output[2]);
});
var pubkey_generated = derive_public_key(key_derivation, output_idx, address_decoded.spend);
function decodeOutputs(tx_json, pub_key, sec_key, address_pub_key) {
//console.log(tx_json);
var mine_output = (output_pub_key == pubkey_generated);
var is_rct = (tx_json.version === 2);
var rct_type = (is_rct ? tx_json.rct_signatures.type : -1);
var mine_output_str = "false";
var key_derivation = generate_key_derivation(pub_key, sec_key);
if (mine_output) {
// console.log(pub_key, address_pub_key, sec_key, key_derivation);
mine_output_str = '<span style="color: #008009;font-weight: bold">true</span>';
if (is_rct) {
try {
var ecdh = decodeRct(tx_json.rct_signatures, output_idx, key_derivation);
amount = ecdh.amount / 1e12;
} catch (err) {
decoding_results_str += "<span class='validNo'>RingCT amount for output " + i + " with pubkey: " + output_pub_key + " decoded incorrectly! It will not be spendable." + "</span>" + "<br>"; //rct commitment != computed
//throw "invalid rct amount";
}
}
}
// go over each tx output, and check if it is ours or not
var decoding_results_str = '<h4>Output decoding results</h4>';
decoding_results_str += "<tr>"
+"<td>" + output_idx + "</td>"
+"<td>" + output_pub_key + "</td>"
+"<td>" + mine_output_str + "</td>"
+"<td>" + amount + "</td>"
+"</tr>";
decoding_results_str += '<table class="center">';
console.log(output[1], pubkey_generated);
});
var output_idx = 0;
decoding_results_str += "</table>"
tx_json.vout.forEach(function(output) {
$("#decode-prove-results").html(decoding_results_str);
var output_pub_key = output.target.key;
var amount = output.amount;
var pubkey_generated = derive_public_key(key_derivation, output_idx, address_pub_key);
});
var mine_output = (output_pub_key == pubkey_generated);
$("#prove_btn").click(function() {
$("#decode-prove-results").html("Prove button pressed");
var mine_output_str = "false";
var address = $("input[name=xmraddress]").val();
var txprvkey = $("input[name=txprvkey]").val();
if (mine_output) {
var address_decoded = decode_address(address);
mine_output_str = '<span style="color: #008009;font-weight: bold">true</span>';
if (is_rct) {
try {
var ecdh = decodeRct(tx_json.rct_signatures, output_idx, key_derivation);
amount = ecdh.amount / 1e12;
} catch (err) {
decoding_results_str += "<span class='validNo'>RingCT amount for output " + i + " with pubkey: " + output_pub_key + "</span>" + "<br>"; //rct commitment != computed
throw "invalid rct amount";
}
}
}
decoding_results_str += "<tr>"
+"<td>" + output_idx + "</td>"
+"<td>" + output_pub_key + "</td>"
+"<td>" + mine_output_str + "</td>"
+"<td>" + amount + "</td>"
+"</tr>";
console.log(address, txprvkey);
//console.log(output[1], pubkey_generated);
output_idx++;
});
decoding_results_str += "</table>"
$("#decode-prove-results").html(decoding_results_str);
}
});
//decode amount and mask and check against commitment
// from https://xmr.llcoins.net/js/site.js
var H = "8b655970153799af2aeadc9ff1add0ea6c7251d54154cfa92c173a0dd39c1f94";
function decodeRct(rv, i, der){
var key = derivation_to_scalar(der, i);
var ecdh = decode_rct_ecdh(rv.ecdhInfo[i], key);
console.log(ecdh);
var Ctmp = commit(ecdh.amount, ecdh.mask);
console.log(Ctmp);
if (Ctmp !== rv.outPk[i]){
throw "mismatched commitments!";
}
ecdh.amount = s2d(ecdh.amount);
return ecdh;
}
//creates a Pedersen commitment from an amount (in scalar form) and a mask
//C = bG + aH where b = mask, a = amount
// from https://xmr.llcoins.net/js/site.js
function commit(amount, mask){
if (!valid_hex(mask) || mask.length !== 64 || !valid_hex(amount) || amount.length !== 64){
throw "invalid amount or mask!";
}
var C = ge_double_scalarmult_base_vartime(amount, H, mask);
return C;
}
// // from https://xmr.llcoins.net/js/site.js
function s2d(scalar){
return JSBigInt.parse(swapEndian(scalar), 16).toString();
}
//switch byte order for hex string
// from https://xmr.llcoins.net/js/site.js
function swapEndian(hex){
if (hex.length % 2 !== 0){return "length must be a multiple of 2!";}
var data = "";
for (var i=1; i <= hex.length / 2; i++){
data += hex.substr(0 - 2 * i, 2);
}
return data;
}
</script>

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