diff --git a/actions/questionnaireActions.js b/actions/questionnaireActions.js
index a533973..5745107 100644
--- a/actions/questionnaireActions.js
+++ b/actions/questionnaireActions.js
@@ -384,7 +384,7 @@ export const removeAttachmentFile = (id) =>
 	});
 }
 
-export const downloadQuestionnaire = ({ filename, download = true }) => 
+export const downloadQuestionnaire = ({ filename, download = true, base64 = false }) => 
 {
 	console.log("ACTION", "questionnaireActions", "downloadQuestionnaire()", );
 
@@ -398,23 +398,29 @@ export const downloadQuestionnaire = ({ filename, download = true }) =>
 
 		console.log("questionnaire", questionnaire);
 		const { main, contacts, signatory_person, founder_persons, head_person, non_profit, } = questionnaire;
-		const playload = { main, contacts, signatory_person, founder_persons, head_person, non_profit, };
-		console.log({ playload });
+		const payload = { main, contacts, signatory_person, founder_persons, head_person, non_profit, };
+		console.log({ payload });
 
-/*		axios.post(`${ process.env.NEXT_PUBLIC_INT_API_HOST }/questionnaire/download`, { questionnaire: playload }, {
+/*		axios.post(`${ process.env.NEXT_PUBLIC_INT_API_HOST }/questionnaire/download`, { questionnaire: payload }, {
 			headers: {
 				"Authorization": `Bearer ${ cookies_list.jwt }`, 
 			}, 
 		})
 */
 
-		axios.post(`${ process.env.NEXT_PUBLIC_SELF_API_HOST }/api/questionnaire/download`, { questionnaire: playload, filename }, {
+		const options = {
 			headers: {
 				'Content-Type': 'application/json', 
 				'Accept': 'application/pdf'
 			}, 
-			responseType: 'arraybuffer', 
-		})
+		};
+
+		if(!base64)
+		{
+			options.responseType = "arraybuffer"; 
+		}
+
+		axios.post(`${ process.env.NEXT_PUBLIC_SELF_API_HOST }/api/questionnaire/download`, { questionnaire: payload, filename, base64: download ? false : true }, options)
 		.then((response) => 
 		{
 			if(download)
diff --git a/components/questionnaire/forms/DigitalCertificates.js b/components/questionnaire/forms/DigitalCertificates.js
new file mode 100644
index 0000000..3bb089f
--- /dev/null
+++ b/components/questionnaire/forms/DigitalCertificates.js
@@ -0,0 +1,222 @@
+import React from "react";
+import Link from "next/link";
+import { SpinnerCircular } from "spinners-react";
+import moment from "moment";
+import dynamic from 'next/dynamic';
+import { concatSeries } from 'async';
+import fileDownload from 'js-file-download';
+
+import FormMessage from "./FormMessage";
+import { downloadQuestionnaire, uploadSignedFile } from "../../../actions";
+//import { generateSignature } from "../../../utils/digital_signature";
+
+
+export default class DigitalCertificates extends React.Component
+{
+	constructor(props)
+	{
+		super(props);
+
+		this.state = {
+			loading: true, 
+			certificates: [], 
+			certificates_error: null, 
+			certificate_selected: undefined, 
+			signing: false, 
+		};
+		this.cryptopro = null;
+	}
+
+	async componentDidMount()
+	{
+		console.log("DC", "CDM");
+		const { CryptoPro } = await import('ruscryptojs');
+
+		this.cryptopro = new CryptoPro();
+		this.cryptopro.init()
+		.then((info) => 
+		{
+			console.log('Initialized', info);
+			this.cryptopro.listCertificates()
+			.then((certificates_list) => 
+			{
+				console.log({ certificates_list });
+
+				concatSeries(certificates_list, (certificate, callback) => 
+				{
+					console.log(certificate.id, certificate.name);
+					this.cryptopro.certificateInfo(certificate.id)
+					.then((cert) => 
+					{
+						if(cert.IsValid)
+						{
+							callback(null, [ { id: certificate.id, fields: cert.Subject, valid_to_date: moment(cert.ValidToDate).format("DD.MM.YYYY") } ]);
+						}
+						else
+						{
+							callback(null, []);
+						}
+					});
+				}, (error, certificates) => 
+				{
+					if(certificates.length === 0)
+					{
+						this.setState({ loading: false, certificates_error: "ISSUED" });
+					}
+					else
+					{
+						this.setState({ loading: false, certificates });
+					}
+				});
+			})
+			.catch((error_certificates_list) => 
+			{
+				console.error({ error_certificates_list });
+				this.setState({ loading: false, certificates_error: "CERTIFICATES" });
+			});
+		})
+		.catch((error_init) => 
+		{
+			console.error({ error_init });
+			this.setState({ loading: false, certificates_error: "NOT_INSTALLED" });
+		});	
+	}
+
+	_sign = () => 
+	{
+		this.setState({ signing: true }, () => 
+		{
+			const { company, main, onSignDigital } = this.props;
+			const filename = `${ main.inn }_questionnaire_${ moment().format("DDMMYYYY_HHmmss") }.pdf`;
+	
+			downloadQuestionnaire({ filename, download: false, base64: true })
+			.then(({ file }) => 
+			{
+				let file_to_sign = file;
+
+				const now = moment().format("DDMMYYYY_HHmmss");
+				this.cryptopro.signData(file_to_sign, this.state.certificate_selected.id)
+				.then(signature => 
+				{
+					uploadSignedFile(signature, company.questionnaire_id, true)
+					.then(() => 
+					{
+						onSignDigital();
+					})
+					.catch(() => 
+					{
+						this.setState({ signing: false });
+					});
+				})
+				.catch((error_sign) => 
+				{
+					console.error({ error_sign });
+					this.setState({ signing: false });
+				})
+			})
+			.catch((e) => 
+			{
+				console.error("exception on sign");
+				console.error(e);
+			});
+		});
+	}
+
+	render()
+	{
+		const { loading, certificates, certificates_error, certificate_selected, signing } = this.state;
+		console.log("render()", { certificates });
+
+		if(loading)
+		{ 
+			return (
+				<div style={{ minHeight: 200, display: "flex", justifyContent: "center", alignItems: "center", }}>
+					<SpinnerCircular size={ 90 } thickness={ 51 } speed={ 100 } color="rgba(28, 1, 169, 1)" secondaryColor="rgba(236, 239, 244, 1)" />
+				</div>
+			); 
+		}
+		else
+		{
+			if(certificates_error === null)
+			{
+				return (
+					<React.Fragment>
+						<div className="feed">
+							<p>Выберите подписанта</p>
+							<div className="feed_list">
+
+								{ certificates.map((certificate, index) => (
+									<div className="form_field checkbox" key={ index }>
+										<input type="radio" 
+											hidden="" 
+											id={ `certificate_${ certificate.id }` } 
+											name={ `certificate_${ certificate.id }` } 
+											checked={ certificate_selected !== undefined && certificate_selected.id === certificate.id ? true : false } 
+											onChange={ () => { this.setState({ certificate_selected: certificate }) } }
+										/>
+										<label htmlFor={ `certificate_${ certificate.id }` }>
+											<div className="feed_item user">
+												<img src="/assets/images/icons/avatar.svg" alt="" />
+												<div>
+													<p className="item_title">{ certificate.fields['CN'].replace(/"/g, '') }</p>
+													<p className="item_desc">
+														{ certificate.fields['SN'] ? (<span>{ certificate.fields['SN'] } { certificate.fields['G'] }</span>) : null }
+													</p>
+													<p className="item_desc">
+														<span>ИНН { certificate.fields['INN'] }</span>
+													</p>
+													<p className="item_desc">
+														{ certificate.fields['OGRNIP'] && (<span>ОГРНИП { certificate.fields['OGRNIP'] }</span>) } 
+														{ certificate.fields['OGRN'] && (<span>ОГРН { certificate.fields['ОГРН'] }</span>) } 
+													</p>
+													<p className="item_desc">
+														<span>Подпись действительна до { certificate.valid_to_date }</span> 
+													</p>
+												</div>
+											</div>
+										</label>
+									</div>
+								)) }
+
+							</div>
+						</div>
+						<div className="action" style={{marginBottom: "20px"}}>
+							<div></div>
+							<button 
+								type="submit" 
+								className="button button-blue" 
+								disabled={ certificate_selected !== undefined ? false : true } 
+								onClick={ this._sign } 
+								style={{ minWidth: "250px" }} 
+							>
+								{ signing ? (
+									<SpinnerCircular size={24} thickness={100} speed={100} color="rgba(255, 255, 255, 1)" secondaryColor="rgba(255, 255, 255, 0.5)" style={{ marginTop: "4px" }}/>
+								) : "Подписать выбранной подписью" }
+							</button>
+						</div>
+					</React.Fragment>
+				)
+			}
+			else
+			{
+				return (
+					<React.Fragment>
+						{ certificates_error === "NOT_INSTALLED" && (
+							<FormMessage type="error" title="Ошибка" message={ <>Плагин КриптоПРО не установлен, <Link href="https://cryptopro.ru/products/cades/plugin"><a target="_blank" rel="noopener noreferrer" style={{ color: "white", textDecoration: "underline" }}>посмотрите инструкцию</a></Link> как установить плагин КриптоПРО.</> }/>
+						) }
+						{ certificates_error === "CERTIFICATES" && (
+							<FormMessage type="error" title="Ошибка" message={ <>Плагин КриптоПРО не активирован, пожалуйста, обновите страницу и подтвердите разрешение для сайта на доступ к списку сертификатов.</> }/>
+						) }
+						{ certificates_error === "ISSUED" && (
+							<FormMessage type="error" title="Ошибка" message={ <>Отсутствуют действующие сертификаты.</> }/>
+						) }
+						{ certificates_error === "MISMATCH" && (
+							<FormMessage type="error" title="Ошибка" message={ <>Подписант не соответствует указанному подписанту в анкете.</> }/>
+						) }
+					</React.Fragment>
+
+				)
+			}
+		}
+	}
+}
\ No newline at end of file
diff --git a/components/questionnaire/forms/Form_3_Signer/index.js b/components/questionnaire/forms/Form_3_Signer/index.js
index 3e44250..6c959dd 100644
--- a/components/questionnaire/forms/Form_3_Signer/index.js
+++ b/components/questionnaire/forms/Form_3_Signer/index.js
@@ -1107,7 +1107,7 @@ class Form_3_Signer extends QuestionnaireForm
 
 					{ errors.indexOf("signatory_person.identical") > -1 && 
 					( 
-						<FormMessage type="error" title="Ошибка" message="Единоличный исполнительный орган и подписант договора лизинга совпадают. Укажите иного подписанта или откажитесь от указания иного подписанта."/>
+						<FormMessage type="error" title="Ошибка" message={ `Выбранный подписант совпадает с единоличным исполнительным органом. Выберите иного подписанта или снимите галку "Подписант отличается от единоличного исполнительного органа".` }/>
 					) }
 
 					<div className="form_field">
diff --git a/components/questionnaire/forms/Form_8_Signing/index.js b/components/questionnaire/forms/Form_8_Signing/index.js
index 1c78e82..b7d0790 100644
--- a/components/questionnaire/forms/Form_8_Signing/index.js
+++ b/components/questionnaire/forms/Form_8_Signing/index.js
@@ -9,12 +9,14 @@ import { SpinnerCircular } from "spinners-react";
 import { connect } from "react-redux";
 import { withRouter } from 'next/router';
 import moment from "moment";
+import NoSSR from "@mpth/react-no-ssr";
 
 import QuestionnaireForm from "../QuestionnaireForm";
 import { MatchMedia } from '../../../../utils/mediaqueries';
 import { reduxWrapper } from '../../../../store';
 import DigitalSignaturesList from "../DigitalSignaturesList";
 import { downloadQuestionnaire } from "../../../../actions";
+import DigitalCertificates from "../DigitalCertificates";
 import FormMessage from "../FormMessage";
 
 class Form_8_Signing extends QuestionnaireForm 
@@ -159,8 +161,12 @@ class Form_8_Signing extends QuestionnaireForm
 											</p>
 										</div>
 									) : (
-										<DigitalSignaturesList form={ null } main={ main } company={ company } onSignDigital={ this._handle_onSignDigital }/>
+										<NoSSR>
+											<DigitalCertificates main={ main } company={ company } onSignDigital={ this._handle_onSignDigital }/>
+										</NoSSR>
+				
 									) }
+									{/*<DigitalSignaturesList form={ null } main={ main } company={ company } onSignDigital={ this._handle_onSignDigital }/>*/}
 								</>
 							)}
 						</>
diff --git a/package.json b/package.json
index 735928d..6f7a014 100644
--- a/package.json
+++ b/package.json
@@ -53,6 +53,7 @@
     "react-widgets": "^5.5.1",
     "redux": "^4.1.2",
     "redux-persist": "^6.0.0",
+    "ruscryptojs": "^2.6.1",
     "spinners-react": "^1.0.6"
   },
   "devDependencies": {
diff --git a/pages/api/questionnaire/download.js b/pages/api/questionnaire/download.js
index b4fb9a6..e9389c8 100644
--- a/pages/api/questionnaire/download.js
+++ b/pages/api/questionnaire/download.js
@@ -120,7 +120,7 @@ export default async function handler(req, res)
 	console.log("API", "questionnaire", "get");
 	console.log(req.body);
 	console.log("-".repeat(50));
-	const { questionnaire, filename } = req.body;
+	const { questionnaire, filename, base64 } = req.body;
 
 	await cors(req, res);
 
@@ -326,10 +326,17 @@ export default async function handler(req, res)
 			//res.setHeader('Content-Type', 'application/pdf');
 			//res.send(pdfBytes);
 			console.log("pdfBytes.size", pdfBytes, pdfBytes.byteLength);
-			res.setHeader("filename", filename);
-			res.setHeader('Content-Type', 'application/pdf');
-			res.send(Buffer.from(pdfBytes));
-
+			if(base64)
+			{
+				//, 'binary'
+				res.status(200).send(Buffer.from(pdfBytes).toString('base64'));
+			}
+			else
+			{
+				res.setHeader("filename", filename);
+				res.setHeader('Content-Type', 'application/pdf');	
+				res.status(200).send(Buffer.from(pdfBytes));
+			}
 			//res.setHeader('Content-Type', 'application/pdf');
 			//res.status(200).send(pdfBytes);
 		}
diff --git a/yarn.lock b/yarn.lock
index ea1e2b7..fdbee09 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2071,6 +2071,11 @@ console-browserify@^1.1.0:
   resolved "https://registry.yarnpkg.com/console-browserify/-/console-browserify-1.2.0.tgz#67063cef57ceb6cf4993a2ab3a55840ae8c49336"
   integrity sha512-ZMkYO/LkF17QvCPqM0gxw8yUzigAOZOSWSHg91FH6orS7vcEj5dVZTidN2fQ14yBSdg97RqhSNwLUXInd52OTA==
 
+console-polyfill@^0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/console-polyfill/-/console-polyfill-0.3.0.tgz#84900902a18c47a5eba932be75fa44d23e8af861"
+  integrity sha512-w+JSDZS7XML43Xnwo2x5O5vxB0ID7T5BdqDtyqT6uiCAX2kZAgcWxNaGqT97tZfSHzfOcvrfsDAodKcJ3UvnXQ==
+
 constants-browserify@1.0.0, constants-browserify@^1.0.0, constants-browserify@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/constants-browserify/-/constants-browserify-1.0.0.tgz#c20b96d8c617748aaf1c16021760cd27fcb8cb75"
@@ -4054,6 +4059,11 @@ js-file-download@^0.4.12:
   resolved "https://registry.yarnpkg.com/js-file-download/-/js-file-download-0.4.12.tgz#10c70ef362559a5b23cdbdc3bd6f399c3d91d821"
   integrity sha512-rML+NkoD08p5Dllpjo0ffy4jRHeY6Zsapvr/W86N7E0yuzAO6qa5X9+xog6zQNlH102J7IXljNY2FtS6Lj3ucg==
 
+js-sha1@^0.6.0:
+  version "0.6.0"
+  resolved "https://registry.yarnpkg.com/js-sha1/-/js-sha1-0.6.0.tgz#adbee10f0e8e18aa07cdea807cf08e9183dbc7f9"
+  integrity sha512-01gwBFreYydzmU9BmZxpVk6svJJHrVxEN3IOiGl6VO93bVKYETJ0sIth6DASI6mIFdt7NmfX9UiByRzsYHGU9w==
+
 "js-tokens@^3.0.0 || ^4.0.0", js-tokens@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-4.0.0.tgz#19203fb59991df98e3a287050d4647cdeaf32499"
@@ -5954,6 +5964,20 @@ run-parallel@^1.1.9:
   dependencies:
     queue-microtask "^1.2.2"
 
+ruscryptojs@^2.6.1:
+  version "2.6.1"
+  resolved "https://registry.yarnpkg.com/ruscryptojs/-/ruscryptojs-2.6.1.tgz#f9af6a95d63d8f575f1c65ea510ec586c2ab753b"
+  integrity sha512-CV41M1w02O5Yb9KLUBtDfIgPvgp+OjFxe7nT6uJ8lYyJInNIZeYBsUaegRVto01pNCG353DBlF9DWckJZ6/4Iw==
+  dependencies:
+    console-polyfill "^0.3.0"
+    js-sha1 "^0.6.0"
+    rutoken "^1.0.8"
+
+rutoken@^1.0.8:
+  version "1.0.8"
+  resolved "https://registry.yarnpkg.com/rutoken/-/rutoken-1.0.8.tgz#443e16022fa8e1d7c638ba852f91d7fcb3a68be7"
+  integrity sha512-85C4CJk650iZauCmOes2TeQmVjkWviI1ys3E7nDw8pWlMI2mBuLz1fCD30ZjAfnNQ6OL19OMTYDNPFrJ60NfEA==
+
 safe-buffer@^5.0.1, safe-buffer@^5.1.0, safe-buffer@^5.1.1, safe-buffer@^5.1.2, safe-buffer@^5.2.0, safe-buffer@~5.2.0:
   version "5.2.1"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.2.1.tgz#1eaf9fa9bdb1fdd4ec75f58f9cdb4e6b7827eec6"