diff --git a/examples/script-tag/public/cert-list.js b/examples/script-tag/public/cert-list.js
index ab2283c..1467ada 100644
--- a/examples/script-tag/public/cert-list.js
+++ b/examples/script-tag/public/cert-list.js
@@ -4,21 +4,28 @@
 ;(function () {
   'use strict';
 
-  var $certs = document.getElementById('certList'),
-    $errorMsg = document.getElementById('errorMessage');
+  var $certificate = document.getElementById('certificate'),
+    $createSignature = document.getElementById('createSignature'),
+    $certificateDetails = document.getElementById('certificateDetails'),
+    $certificateError = document.getElementById('certificateError');
 
-  window.cryptoPro.getUserCertificates()
-    .then(function (certificateList) {
-      certificateList.forEach(function (certificate) {
-        var $certOption = document.createElement('option');
+  $certificate.addEventListener('change', function handleCertSelection() {
+    var thumbprint = $certificate.value;
 
-        $certOption.textContent = certificate.name + ' (действителен до: ' + certificate.validTo + ')';
+    $createSignature.disabled = !thumbprint;
+    $certificateDetails.style.display = thumbprint ? 'block' : 'none';
+  });
 
-        $certOption.value = certificate.thumbprint;
+  window.cryptoPro.getUserCertificates().then(function (certificateList) {
+    certificateList.forEach(function (certificate) {
+      var $certOption = document.createElement('option');
 
-        $certs.appendChild($certOption);
-      });
-    }, function (error) {
-      $errorMsg.textContent = '\n' + error.message;
+      $certOption.textContent = certificate.name + ' (действителен до: ' + certificate.validTo + ')';
+      $certOption.value = certificate.thumbprint;
+
+      $certificate.appendChild($certOption);
     });
+  }, function (error) {
+    $certificateError.textContent = '\n' + error.message;
+  });
 })();
diff --git a/examples/script-tag/public/create-sign.js b/examples/script-tag/public/create-sign.js
index c5739eb..db33cb2 100644
--- a/examples/script-tag/public/create-sign.js
+++ b/examples/script-tag/public/create-sign.js
@@ -1,24 +1,52 @@
 /**
- * Пример создания подписи данных, сгенерированных по ГОСТ Р 34.11-94
- * https://ru.wikipedia.org/wiki/%D0%93%D0%9E%D0%A1%D0%A2_%D0%A0_34.11-94
+ * Пример создания подписи данных
  * */
 ;(function () {
   'use strict';
 
-  var $errorMsg = document.getElementById('errorMessage');
+  var $createSignature = document.forms.createSignature,
+    $certificate = document.getElementById('certificate'),
+    $message = document.getElementById('message'),
+    $hash = document.getElementById('hash'),
+    $hashError = document.getElementById('hashError'),
+    $signature = document.getElementById('signature'),
+    $signatureError = document.getElementById('signatureError');
 
-  document
-    .getElementById('createSign')
-    .addEventListener('click', function () {
-      // Вычислинный hash по ГОСТ Р 34.11-94 для строки: "abc"
-      var hash = 'b285056dbf18d7392d7677369524dd14747459ed8143997e163b2986f92fd42c',
-        hashBase64 = window.btoa(hash),
-        thumbprint = document.getElementById('certList').value;
+  $createSignature.addEventListener('reset', function () {
+    window.location.reload();
+  });
 
-      window.cryptoPro.createSignature(thumbprint, hashBase64).then(function (signature) {
-        document.getElementById('createdSign').value = signature;
+  $createSignature.addEventListener('submit', function (event) {
+    var thumbprint = $certificate.value,
+      message = $message.value,
+      hashingAlgorithm = document.querySelector('input[name="hashingAlgorithm"]:checked').value;
+
+    event.preventDefault();
+
+    $hash.placeholder = 'Вычисляется...';
+    $hash.value = '';
+
+    window.cryptoPro.createHash(message, hashingAlgorithm).then(function (hash) {
+      var detachedSignature = document.querySelector('input[name="signatureType"]:checked').value;
+
+      detachedSignature = Boolean(Number(detachedSignature));
+
+      $hash.value = hash;
+
+      $signature.placeholder = 'Создается...';
+      $signature.value = '';
+
+      window.cryptoPro.createSignature(thumbprint, hash, detachedSignature).then(function (signature) {
+        $signature.value = signature;
       }, function (error) {
-        $errorMsg.textContent = '\n' + error.message;
+        $signature.placeholder = 'Не создана';
+
+        $signatureError.textContent = '\n' + error.message;
       });
+    }, function (error) {
+      $hash.placeholder = 'Не вычислен';
+
+      $hashError.textContent = '\n' + error.message;
     });
+  });
 })();
diff --git a/examples/script-tag/public/get-env-info.js b/examples/script-tag/public/get-env-info.js
index becd9f2..be0b864 100644
--- a/examples/script-tag/public/get-env-info.js
+++ b/examples/script-tag/public/get-env-info.js
@@ -4,17 +4,18 @@
 ;(function () {
   'use strict';
 
-  var $errorMsg = document.getElementById('errorMessage');
+  var $systemInfo = document.getElementById('systemInfo'),
+    $systemInfoError = document.getElementById('systemInfoError');
 
   window.cryptoPro.getSystemInfo().then(function (systemInfo) {
     window.cryptoPro.isValidSystemSetup().then(function (isValidSystemSetup) {
       systemInfo.isValidSystemSetup = isValidSystemSetup;
 
-      document.getElementById('systemInfo').textContent = JSON.stringify(systemInfo, null, '  ');
-    }, function (error) {
-      $errorMsg.textContent = '\n' + error.message;
-    });
-  }, function (error) {
-    $errorMsg.textContent = '\n' + error.message;
-  });
+      $systemInfo.textContent = JSON.stringify(systemInfo, null, '  ');
+    }, handleError);
+  }, handleError);
+
+  function handleError(error) {
+    $systemInfoError.textContent = '\n' + error.message;
+  }
 })();
diff --git a/examples/script-tag/public/index.html b/examples/script-tag/public/index.html
index bc38ebd..24a7bb6 100755
--- a/examples/script-tag/public/index.html
+++ b/examples/script-tag/public/index.html
@@ -5,14 +5,76 @@
     <title>Пример использования cryptoPro</title>
 </head>
 <body>
-    <select id="certList"></select>
-    <button id="createSign" type="button">Создать подпись</button>
-    <button id="showCertificate" type="button">Информация о сертификате</button>
-    <br>
-    <pre id="certificateInfo"></pre>
-    <textarea id="createdSign" cols="100" rows="30"></textarea>
-    <pre id="errorMessage"></pre>
-    <pre id="systemInfo"></pre>
+    <form name="createSignature" novalidate>
+        <fieldset>
+            <legend>Создание подписи</legend>
+            <label for="message">Данные для подиси: *</label>
+            <br>
+            <textarea id="message" cols="130" rows="5" placeholder="Введите сообщение" autofocus required>abc</textarea>
+            <br><br>
+
+            <label for="certificate">Сертификат: *</label>
+            <br>
+            <select id="certificate" tabindex="-1" required>
+                <option disabled selected>Не выбран</option>
+            </select>
+            <details id="certificateDetails">
+                <summary>Информация о сертификате</summary>
+                <pre id="certificateInfo"></pre>
+            </details>
+            <pre id="certificateError"></pre>
+
+            <label>Тип подписи: *</label>
+            <br>
+            <label><input type="radio" name="signatureType" value="0" checked>Совмещенная</label>
+            <br>
+            <label><input type="radio" name="signatureType" value="1">Отделенная</label>
+            <br><br>
+
+            <label>Алгоритм хэширования: *</label>
+            <br>
+            <label><input type="radio" name="hashingAlgorithm" value="GOST_3411">ГОСТ Р 34.11-94</label><br>
+            <label><input type="radio" name="hashingAlgorithm" value="GOST_3411_2012_256">ГОСТ Р 34.11-2012 (256)</label><br>
+            <label><input type="radio" name="hashingAlgorithm" value="GOST_3411_2012_512" checked>ГОСТ Р 34.11-2012 (512)</label><br>
+            <label><input type="radio" name="hashingAlgorithm" value="GOST_3411_HMAC">ГОСТ Р 34.11-94 (HMAC)</label><br>
+            <label><input type="radio" name="hashingAlgorithm" value="GOST_3411_2012_256_HMAC">ГОСТ Р 34.11-2012 (HMAC 256)</label><br>
+            <label><input type="radio" name="hashingAlgorithm" value="GOST_3411_2012_512_HMAC">ГОСТ Р 34.11-2012 (HMAC 512)</label>
+            <br><br>
+
+            <hr>
+            <button id="createSignature" type="submit" disabled>Создать подпись</button>
+            <button type="reset">Сбросить</button>
+        </fieldset>
+
+        <fieldset>
+            <legend>Результат</legend>
+            <label for="hash">Хэш:</label><br>
+            <textarea id="hash" cols="130" rows="5" placeholder="Не вычислен"></textarea>
+            <br>
+            <pre id="hashError"></pre>
+
+            <label for="signature">Подпись:</label><br>
+            <textarea id="signature" cols="130" rows="30" placeholder="Не создана"></textarea>
+            <p>
+                Для проверки нужно создать файл со сгенерированной подписью в кодировке UTF-8 с расширением *.sig
+                <br>
+                для совмещенной подписи (или *.sgn для отделенной).
+            </p>
+            <a href="https://www.gosuslugi.ru/pgu/eds/"
+               target="_blank"
+               rel="nofollow noopener noreferrer"
+               title="Перейти к проверке подписи">
+                Проверить подпись
+            </a>
+            <pre id="signatureError"></pre>
+        </fieldset>
+
+        <fieldset>
+            <legend>Информация о системе</legend>
+            <pre id="systemInfo"></pre>
+            <pre id="systemInfoError"></pre>
+        </fieldset>
+    </form>
 
     <!-- Полифиллы для работы библиотеки -->
     <script src="polyfills/promise.js"></script>
@@ -23,6 +85,7 @@
 
     <!-- Полифиллы для работы демо скриптов -->
     <script src="polyfills/atob-btoa.js"></script>
+    <script src="polyfills/details-element-polyfill.js"></script>
 
     <!-- Демо скрипты -->
     <script src="cert-list.js"></script>
diff --git a/examples/script-tag/public/polyfills/details-element-polyfill.js b/examples/script-tag/public/polyfills/details-element-polyfill.js
new file mode 100644
index 0000000..473ad23
--- /dev/null
+++ b/examples/script-tag/public/polyfills/details-element-polyfill.js
@@ -0,0 +1,194 @@
+/*
+Details Element Polyfill 2.4.0
+Copyright © 2019 Javan Makhmali
+ */
+(function() {
+  "use strict";
+  var element = document.createElement("details");
+  var elementIsNative = typeof HTMLDetailsElement != "undefined" && element instanceof HTMLDetailsElement;
+  var support = {
+    open: "open" in element || elementIsNative,
+    toggle: "ontoggle" in element
+  };
+  var styles = '\ndetails, summary {\n  display: block;\n}\ndetails:not([open]) > *:not(summary) {\n  display: none;\n}\nsummary::before {\n  content: "►";\n  padding-right: 0.3rem;\n  font-size: 0.6rem;\n  cursor: default;\n}\n[open] > summary::before {\n  content: "▼";\n}\n';
+  var _ref = [], forEach = _ref.forEach, slice = _ref.slice;
+  if (!support.open) {
+    polyfillStyles();
+    polyfillProperties();
+    polyfillToggle();
+    polyfillAccessibility();
+  }
+  if (support.open && !support.toggle) {
+    polyfillToggleEvent();
+  }
+  function polyfillStyles() {
+    document.head.insertAdjacentHTML("afterbegin", "<style>" + styles + "</style>");
+  }
+  function polyfillProperties() {
+    var prototype = document.createElement("details").constructor.prototype;
+    var setAttribute = prototype.setAttribute, removeAttribute = prototype.removeAttribute;
+    var open = Object.getOwnPropertyDescriptor(prototype, "open");
+    Object.defineProperties(prototype, {
+      open: {
+        get: function get() {
+          if (this.tagName == "DETAILS") {
+            return this.hasAttribute("open");
+          } else {
+            if (open && open.get) {
+              return open.get.call(this);
+            }
+          }
+        },
+        set: function set(value) {
+          if (this.tagName == "DETAILS") {
+            return value ? this.setAttribute("open", "") : this.removeAttribute("open");
+          } else {
+            if (open && open.set) {
+              return open.set.call(this, value);
+            }
+          }
+        }
+      },
+      setAttribute: {
+        value: function value(name, _value) {
+          var _this = this;
+          var call = function call() {
+            return setAttribute.call(_this, name, _value);
+          };
+          if (name == "open" && this.tagName == "DETAILS") {
+            var wasOpen = this.hasAttribute("open");
+            var result = call();
+            if (!wasOpen) {
+              var summary = this.querySelector("summary");
+              if (summary) summary.setAttribute("aria-expanded", true);
+              triggerToggle(this);
+            }
+            return result;
+          }
+          return call();
+        }
+      },
+      removeAttribute: {
+        value: function value(name) {
+          var _this2 = this;
+          var call = function call() {
+            return removeAttribute.call(_this2, name);
+          };
+          if (name == "open" && this.tagName == "DETAILS") {
+            var wasOpen = this.hasAttribute("open");
+            var result = call();
+            if (wasOpen) {
+              var summary = this.querySelector("summary");
+              if (summary) summary.setAttribute("aria-expanded", false);
+              triggerToggle(this);
+            }
+            return result;
+          }
+          return call();
+        }
+      }
+    });
+  }
+  function polyfillToggle() {
+    onTogglingTrigger(function(element) {
+      element.hasAttribute("open") ? element.removeAttribute("open") : element.setAttribute("open", "");
+    });
+  }
+  function polyfillToggleEvent() {
+    if (window.MutationObserver) {
+      new MutationObserver(function(mutations) {
+        forEach.call(mutations, function(mutation) {
+          var target = mutation.target, attributeName = mutation.attributeName;
+          if (target.tagName == "DETAILS" && attributeName == "open") {
+            triggerToggle(target);
+          }
+        });
+      }).observe(document.documentElement, {
+        attributes: true,
+        subtree: true
+      });
+    } else {
+      onTogglingTrigger(function(element) {
+        var wasOpen = element.getAttribute("open");
+        setTimeout(function() {
+          var isOpen = element.getAttribute("open");
+          if (wasOpen != isOpen) {
+            triggerToggle(element);
+          }
+        }, 1);
+      });
+    }
+  }
+  function polyfillAccessibility() {
+    setAccessibilityAttributes(document);
+    if (window.MutationObserver) {
+      new MutationObserver(function(mutations) {
+        forEach.call(mutations, function(mutation) {
+          forEach.call(mutation.addedNodes, setAccessibilityAttributes);
+        });
+      }).observe(document.documentElement, {
+        subtree: true,
+        childList: true
+      });
+    } else {
+      document.addEventListener("DOMNodeInserted", function(event) {
+        setAccessibilityAttributes(event.target);
+      });
+    }
+  }
+  function setAccessibilityAttributes(root) {
+    findElementsWithTagName(root, "SUMMARY").forEach(function(summary) {
+      var details = findClosestElementWithTagName(summary, "DETAILS");
+      summary.setAttribute("aria-expanded", details.hasAttribute("open"));
+      if (!summary.hasAttribute("tabindex")) summary.setAttribute("tabindex", "0");
+      if (!summary.hasAttribute("role")) summary.setAttribute("role", "button");
+    });
+  }
+  function eventIsSignificant(event) {
+    return !(event.defaultPrevented || event.ctrlKey || event.metaKey || event.shiftKey || event.target.isContentEditable);
+  }
+  function onTogglingTrigger(callback) {
+    addEventListener("click", function(event) {
+      if (eventIsSignificant(event)) {
+        if (event.which <= 1) {
+          var element = findClosestElementWithTagName(event.target, "SUMMARY");
+          if (element && element.parentNode && element.parentNode.tagName == "DETAILS") {
+            callback(element.parentNode);
+          }
+        }
+      }
+    }, false);
+    addEventListener("keydown", function(event) {
+      if (eventIsSignificant(event)) {
+        if (event.keyCode == 13 || event.keyCode == 32) {
+          var element = findClosestElementWithTagName(event.target, "SUMMARY");
+          if (element && element.parentNode && element.parentNode.tagName == "DETAILS") {
+            callback(element.parentNode);
+            event.preventDefault();
+          }
+        }
+      }
+    }, false);
+  }
+  function triggerToggle(element) {
+    var event = document.createEvent("Event");
+    event.initEvent("toggle", false, false);
+    element.dispatchEvent(event);
+  }
+  function findElementsWithTagName(root, tagName) {
+    return (root.tagName == tagName ? [ root ] : []).concat(typeof root.getElementsByTagName == "function" ? slice.call(root.getElementsByTagName(tagName)) : []);
+  }
+  function findClosestElementWithTagName(element, tagName) {
+    if (typeof element.closest == "function") {
+      return element.closest(tagName);
+    } else {
+      while (element) {
+        if (element.tagName == tagName) {
+          return element;
+        } else {
+          element = element.parentNode;
+        }
+      }
+    }
+  }
+})();
diff --git a/examples/script-tag/public/show-cert.js b/examples/script-tag/public/show-cert.js
index d9ccddd..aadca7f 100644
--- a/examples/script-tag/public/show-cert.js
+++ b/examples/script-tag/public/show-cert.js
@@ -4,10 +4,18 @@
 ;(function () {
   'use strict';
 
-  document
-    .getElementById('showCertificate')
-    .addEventListener('click', function () {
-      var thumbprint = document.getElementById('certList').value;
+  var $certificate = document.getElementById('certificate'),
+    $certificateDetails = document.getElementById('certificateDetails'),
+    $certificateInfo = document.getElementById('certificateInfo'),
+    $certificatesError = document.getElementById('certificatesError');
+
+  $certificateDetails.style.display = 'none';
+
+  $certificateDetails.addEventListener('toggle', function () {
+    if ($certificateDetails.open) {
+      var thumbprint = $certificate.value;
+
+      $certificateInfo.textContent = 'Запрашивается...';
 
       window.cryptoPro.getCertificate(thumbprint).then(function (certificate) {
         Promise.all([
@@ -24,7 +32,7 @@
           certificate.hasExtendedKeyUsage('1.3.6.1.4.1.311.80.2'),
           certificate.hasExtendedKeyUsage(['1.3.6.1.5.5.7.3.3', '1.3.6.1.4.1.311.10.3.12']),
         ]).then(function (results) {
-          document.getElementById('certificateInfo').textContent = JSON.stringify({
+          $certificateInfo.textContent = JSON.stringify({
             name: certificate.name,
             issuerName: certificate.issuerName,
             subjectName: certificate.subjectName,
@@ -44,7 +52,16 @@
             '1.3.6.1.4.1.311.80.2': results[10],
             "'1.3.6.1.5.5.7.3.3', '1.3.6.1.4.1.311.10.3.12'": results[11],
           }, null, '  ');
-        });
-      });
-    });
+        }, handleError);
+      }, handleError);
+
+      return;
+    }
+
+    $certificateInfo.textContent = '';
+  });
+
+  function handleError(error) {
+    $certificatesError.textContent = '\n' + error.message;
+  }
 })();
diff --git a/src/api/createHash.ts b/src/api/createHash.ts
new file mode 100644
index 0000000..edc9f95
--- /dev/null
+++ b/src/api/createHash.ts
@@ -0,0 +1,71 @@
+import { _afterPluginsLoaded } from '../helpers/_afterPluginsLoaded';
+import { _extractMeaningfulErrorMessage } from '../helpers/_extractMeaningfulErrorMessage';
+import { __cadesAsyncToken__, __createCadesPluginObject__, _generateCadesFn } from '../helpers/_generateCadesFn';
+
+type Algorithm =
+  | 'GOST_3411'
+  | 'GOST_3411_2012_256'
+  | 'GOST_3411_2012_512'
+  | 'GOST_3411_HMAC'
+  | 'GOST_3411_2012_256_HMAC'
+  | 'GOST_3411_2012_512_HMAC';
+
+/**
+ * Создает хэш сообщения по ГОСТ Р 34.11
+ * https://ru.wikipedia.org/wiki/%D0%A1%D1%82%D1%80%D0%B8%D0%B1%D0%BE%D0%B3_(%D1%85%D0%B5%D1%88-%D1%84%D1%83%D0%BD%D0%BA%D1%86%D0%B8%D1%8F)
+ *
+ * @param unencryptedMessage - сообщение для хеширования
+ * @param algorithm - один из алгоритмов хеширования:
+ * GOST_3411
+ * GOST_3411_2012_256
+ * GOST_3411_2012_512 - по умолчанию
+ * GOST_3411_HMAC
+ * GOST_3411_2012_256_HMAC
+ * GOST_3411_2012_512_HMAC
+ *
+ * @returns хэш
+ */
+export const createHash = _afterPluginsLoaded(
+  async (unencryptedMessage: string | ArrayBuffer, algorithm: Algorithm = 'GOST_3411_2012_512'): Promise<string> => {
+    const { cadesplugin } = window;
+
+    return eval(
+      _generateCadesFn(function createHash(): string {
+        const cadesHashedData = __cadesAsyncToken__ + __createCadesPluginObject__('CAdESCOM.HashedData');
+        let messageBase64;
+        let hash;
+
+        try {
+          messageBase64 = Buffer.from(unencryptedMessage).toString('base64');
+        } catch (error) {
+          console.error(error);
+
+          throw new Error('Ошибка при преобразовании сообщения в Base64');
+        }
+
+        try {
+          void (
+            __cadesAsyncToken__ +
+            cadesHashedData.propset_Algorithm(cadesplugin['CADESCOM_HASH_ALGORITHM_CP_' + algorithm])
+          );
+          void (__cadesAsyncToken__ + cadesHashedData.propset_DataEncoding(cadesplugin.CADESCOM_BASE64_TO_BINARY));
+          void (__cadesAsyncToken__ + cadesHashedData.Hash(messageBase64));
+        } catch (error) {
+          console.error(error);
+
+          throw new Error(_extractMeaningfulErrorMessage(error) || 'Ошибка при инициализации хэширования');
+        }
+
+        try {
+          hash = __cadesAsyncToken__ + cadesHashedData.Value;
+        } catch (error) {
+          console.error(error);
+
+          throw new Error(_extractMeaningfulErrorMessage(error) || 'Ошибка при создании хэша');
+        }
+
+        return hash;
+      }),
+    );
+  },
+);
diff --git a/src/api/createSignature.ts b/src/api/createSignature.ts
index 8b7be8a..7bf0346 100644
--- a/src/api/createSignature.ts
+++ b/src/api/createSignature.ts
@@ -9,12 +9,12 @@ import { _getDateObj } from '../helpers/_getDateObj';
  * Создает подпись base64 строки по отпечатку сертификата
  *
  * @param thumbprint - отпечаток сертификата
- * @param dataBase64 - строковые данные в формате base64
+ * @param messageHash - хэш подписываемого сообщения, сгенерированный по ГОСТ Р 34.11
  * @param detachedSignature = true - тип подписи открепленная (true) / присоединенная (false)
  * @returns подпись
  */
 export const createSignature = _afterPluginsLoaded(
-  async (thumbprint: string, dataBase64: string, detachedSignature: boolean = true): Promise<string> => {
+  async (thumbprint: string, messageHash: string, detachedSignature: boolean = true): Promise<string> => {
     const { cadesplugin } = window;
     const cadesCertificate = await _getCadesCert(thumbprint);
 
@@ -52,7 +52,7 @@ export const createSignature = _afterPluginsLoaded(
           cadesAuthAttrs = __cadesAsyncToken__ + cadesSigner.AuthenticatedAttributes2;
           void (__cadesAsyncToken__ + cadesAuthAttrs.Add(cadesAttrs));
           void (__cadesAsyncToken__ + cadesSignedData.propset_ContentEncoding(cadesplugin.CADESCOM_BASE64_TO_BINARY));
-          void (__cadesAsyncToken__ + cadesSignedData.propset_Content(dataBase64));
+          void (__cadesAsyncToken__ + cadesSignedData.propset_Content(messageHash));
           void (
             __cadesAsyncToken__ + cadesSigner.propset_Options(cadesplugin.CAPICOM_CERTIFICATE_INCLUDE_END_ENTITY_ONLY)
           );
diff --git a/src/api/index.ts b/src/api/index.ts
index 2fd4070..adc6bcd 100644
--- a/src/api/index.ts
+++ b/src/api/index.ts
@@ -3,4 +3,5 @@ export * from './getUserCertificates';
 export * from './getSystemInfo';
 export * from './isValidSystemSetup';
 export * from './createSignature';
+export * from './createHash';
 export * from './certificate';