var g_sTsaAddress = "http://sp.ekey.ru/tsp/tsp.srf";
	var CAPICOM_STORE_OPEN_READ_ONLY = 0;
	var CAPICOM_CURRENT_USER_STORE = 2;
	var CAPICOM_MY_STORE = "My";
	var CAPICOM_STORE_OPEN_MAXIMUM_ALLOWED = 2;
	var MICROSOFT_INTERNET_EXPLORER = 'Microsoft Internet Explorer';
	var CADESCOM_CADES_X_LONG_TYPE_1 = 0x5d;
	var CADESCOM_BASE64_TO_BINARY = 0x01;
	var CAPICOM_ENCODE_BASE64 = 0;

	var g_bDetached = true;

	function isCadESPluginInstalled() {
		switch (navigator.appName) {
		case MICROSOFT_INTERNET_EXPLORER:
			try {
				var obj = new ActiveXObject("CAdESCOM.CPSigner");
				return true;
			}
			catch (err) {}
			break;
		default:
			var mimetype = navigator.mimeTypes["application/x-cades"];
			if (mimetype) {
				var plugin = mimetype.enabledPlugin;
				if (plugin) {
					return true;
				}
			}
		}
		return false;
	}

	function selectCertificate() {
		if (isCadESPluginInstalled() ) {
			var MyStore = CreateObject("CAPICOM.Store");
			MyStore.Open(CAPICOM_CURRENT_USER_STORE, "My", CAPICOM_STORE_OPEN_READ_ONLY);

			var Certificates = MyStore.Certificates;
			if (Certificates.Count == 0) {
				alert("Нет сертификатов");
				return;
			} else if (Certificates.Count != 1) {
				Certificates = Certificates.Select("Список", "Выберите");
			}

			return Certificates.Item(1);
		}
		throw "Nothing selected";
	}

	function GetErrorMessage(e) {
		return e.message + " (" + e.number + ")";
	}

	// Функция активации объектов КриптоПро ЭЦП Browser plug-in
	function CreateObject(name) {
		var resultObject;
		switch (navigator.appName) {
		case MICROSOFT_INTERNET_EXPLORER:
			resultObject = new ActiveXObject(name);
			break;
		default:
			var cadesobject = document.getElementById("cadesplugin");
			resultObject = cadesobject.CreateObject(name);
		}
		if (resultObject && resultObject != undefined) {
			return resultObject;
		} else {
			throw "Object '" + name + "' does not created."
		}
	}

	function SignCreate(oCertificate, dataToSign) {
		var oSigner = CreateObject("CAdESCOM.CPSigner");
		oSigner.Certificate = oCertificate;
		oSigner.TSAAddress = "http://sp.ekey.ru/tsp/tsp.srf";

		var oSignedData = CreateObject("CAdESCOM.CadesSignedData");
		oSignedData.ContentEncoding = CADESCOM_BASE64_TO_BINARY;
		oSignedData.Content = dataToSign;

		try {
			var sSignedMessage =
					oSignedData.SignCades(oSigner,
							CADESCOM_CADES_X_LONG_TYPE_1, g_bDetached);
			document.writeln("<h1>Signature value (detached = " + g_bDetached + "): </h1>");
			document.writeln(sSignedMessage);
			document.writeln("");
		} catch (err) {
			alert("Failed to create signature. Error: " + GetErrorMessage(err));
			return;
		}
		return sSignedMessage;
	}

	function Verify(sSignedMessage, dataToSign) {
		var oSignedData = CreateObject("CAdESCOM.CadesSignedData");
		if (g_bDetached) {
			oSignedData.ContentEncoding = CADESCOM_BASE64_TO_BINARY;
			oSignedData.Content = dataToSign;
			alert("Signature is detached");
		} else {
			alert("Signature is not detached");
		}
		try {
			oSignedData.VerifyCades(sSignedMessage,
					CADESCOM_CADES_X_LONG_TYPE_1, g_bDetached);
		} catch (err) {
			alert("Failed to verify signature. Error: " + GetErrorMessage(err));
			return false;
		}

		return true;
	}

	function run() {
		var oCertificate = selectCertificate();
		g_bDetached = true;
		testCase(oCertificate);
		g_bDetached = false;
		testCase(oCertificate);
	}

	function testCase(oCertificate) {
		// строка 'CryptoPro' - в Base64
		// перекодировал тут: http://www.motobit.com/util/base64-decoder-encoder.asp
		var signedMessage = SignCreate(oCertificate, "Q3J5cHRvUHJv");
		var verifyResult = Verify(signedMessage);
		if (verifyResult) {
			alert("Signature is valid when detached: " + g_bDetached);
		} else {
			alert("Signature is not valid when detached: " + g_bDetached);
		}
	}