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openmonero/html/js/controllers/vanity_address.js

109 lines
4.2 KiB

// Copyright (c) 2014-2015, MyMonero.com
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
// of conditions and the following disclaimer in the documentation and/or other
// materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its contributors may be
// used to endorse or promote products derived from this software without specific
// prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
thinwalletCtrls.controller('VanityAddressCtrl', function ($scope) {
"use strict";
$scope.running = false;
$scope.num_searched = 0;
function score(address, prefix) {
address = address.toUpperCase();
for (var i = 0; i < prefix.length; ++i) {
if (address[i] !== prefix[i] && prefix[i] !== '*') return i;
}
return prefix.length;
}
function startGeneration(prefix) {
$scope.found = {};
$scope.num_searched = 0;
var num_searched = 0;
var seed = cnUtil.rand_16();
var bestMatch = 0;
var last_generated = 0;
prefix = prefix.toUpperCase();
function generateAddress() {
for (var i = 0; i < 10; ++i) {
if (!$scope.running) return;
var address = cnUtil.create_addr_prefix(seed);
++num_searched;
var sc = score(address, prefix);
if (sc === prefix.length) {
$scope.found = {
mnemonic: mn_encode(seed),
address: cnUtil.create_address(seed).public_addr
};
$scope.num_searched = num_searched;
$scope.running = false;
break;
} else {
if (sc >= bestMatch) {
bestMatch = sc;
$scope.found = {
mnemonic: mn_encode(seed),
address: cnUtil.create_address(seed).public_addr
};
}
}
var lastByte;
lastByte = parseInt(seed.slice(30, 32), 16);
if (lastByte < 0xff) {
seed = seed.slice(0, 30) + ('0' + (lastByte + 1).toString(16)).slice(-2);
} else {
seed = cnUtil.keccak(seed, 16, 32).slice(0, 30) + '00';
}
}
if (num_searched - last_generated > 10000) {
seed = cnUtil.rand_16();
last_generated = num_searched;
}
$scope.num_searched = num_searched;
$scope.$apply();
setTimeout(generateAddress, 0);
}
setTimeout(generateAddress, 0);
}
$scope.$on('$destroy', function () {
$scope.running = false;
});
$scope.toggleGeneration = function () {
$scope.running = !$scope.running;
if ($scope.running) {
if (!$scope.prefix || $scope.prefix[0] !== '4') {
$scope.running = false;
return;
}
startGeneration($scope.prefix);
}
};
});