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Utwórz interfejs API REST dla podpisów cyfrowych PDF za pomocą webhooków

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Przegląd

Automatyzacja tworząca kompleksowe REST API do cyfrowego podpisywania dokumentów PDF z wykorzystaniem webhooków n8n. Ten szablon demonstruje implementację bezpiecznej funkcjonalności podpisywania dokumentów poprzez standardowe punkty końcowe API, z obsługą przesyłania i pobierania plików.

Przykłady zastosowań

Ten workflow jest idealnym rozwiązaniem dla specjalistów automatyzacji i developerów potrzebujących zaimplementować cyfrowe podpisywanie dokumentów. Oto kluczowe zastosowania:

  • Integracja funkcji podpisywania PDF z istniejącymi systemami obiegu dokumentów
  • Automatyzacja procesów podpisywania oparta na API
  • Tworzenie prototypów systemów weryfikacji dokumentów
  • Nauka obsługi webhooków i manipulacji plikami w n8n
  • Testowanie podpisywania PDF w środowiskach deweloperskich
  • Implementacja bezpiecznego przechowywania certyfikatów cyfrowych
  • Automatyzacja masowego podpisywania dokumentów

Funkcjonalności

Zarządzanie dokumentami przez API

Udostępnia punkty końcowe webhook dla wszystkich operacji na dokumentach, obsługuje przesyłanie plików w formacie multipart/form-data, przetwarza konfigurację podpisywania w formacie JSON oraz umożliwia pobieranie gotowych dokumentów.

Obsługa certyfikatów cyfrowych

Pozwala na przesyłanie istniejących certyfikatów PFX/PKCS#12, generuje nowe certyfikaty z konfigurowalnymi atrybutami, bezpiecznie zarządza przechowywaniem certyfikatów i kojarzy je z operacjami podpisywania.

Podpisywanie kryptograficzne PDF

Stosuje cyfrowe podpisy przy użyciu standardowych metod kryptograficznych, osadza informacje o podpisie w strukturze dokumentu PDF, weryfikuje integralność dokumentu poprzez walidację kryptograficzną oraz zachowuje oryginalną zawartość dokumentu.

System integracji webhook

Kieruje różne metody API do odpowiednich handlerów, weryfikuje zawartość żądań i plików, zarządza uwierzytelnianiem poprzez ścieżki webhook oraz zwraca ustrukturyzowane odpowiedzi do integracji z innymi systemami.

Architektura techniczna

Komponenty

  • API Gateway: Węzły webhook n8n odbierające żądania zewnętrzne
  • Router żądań: Węzły switch kierujące operacje na podstawie parametrów metod
  • Procesor dokumentów: Węzły funkcji do manipulacji i weryfikacji PDF
  • Menedżer certyfikatów: Wyspecjalizowane węzły do operacji kryptograficznych
  • Interfejs magazynu: Węzły operacji plikowych do trwałego przechowywania
  • Formatowanie odpowiedzi: Węzły strukturyzujące odpowiedzi API

Przepływ integracji

Żądanie klienta → Punkt końcowy webhook → Router metod → Silnik przetwarzania → Podpisywanie cyfrowe → Magazyn → Generowanie odpowiedzi → Odpowiedź dla klienta

Instrukcja konfiguracji

Wymagania wstępne

  • Instalacja n8n (minimalna wersja 0.214.0)
  • Node.js 14 lub nowszy
  • Wymagana zmienna środowiskowa: NODE_FUNCTION_ALLOW_EXTERNAL: "node-forge,@signpdf/signpdf,@signpdf/signer-p12,@signpdf/placeholder-plain"

Kroki konfiguracji

  1. Import workflow: Zaimportuj plik JSON workflow do swojej instancji n8n i aktywuj workflow aby włączyć webhooki
  2. Konfiguracja magazynu: Ustaw zmienne ścieżek magazynu w workflow i upewnij się o właściwych uprawnieniach do katalogów
  3. Testowanie punktów końcowych: Użyj dołączonych skryptów testowych do weryfikacji funkcjonalności, przetestuj przesyłanie PDF, generowanie certyfikatów i podpisywanie
  4. Integracja: Udokumentuj adresy URL webhooków dla integracji z innymi systemami i skonfiguruj obsługę błędów zgodnie z wymaganiami

Metody testowania

Przetestuj funkcjonalność workflow używając różnych żądań HTTP i danych JSON:

  • Prześlij dokumenty PDF do punktu końcowego przetwarzania dokumentów
  • Prześlij lub wygeneruj certyfikaty cyfrowe
  • Wykonaj operacje podpisywania PDF
  • Pobierz podpisane dokumenty z punktu końcowego pobierania

Punkty końcowe webhook

1. Punkt końcowy przetwarzania dokumentów (/webhook/docu-digi-sign)

Obsługuje wszystkie operacje na dokumentach i certyfikatach:

  • Metoda: Upload PDF (POST, multipart/form-data, parametry: method, uploadType, fileName, fileData)
  • Metoda: Upload Certificate (POST, multipart/form-data, parametry: method, uploadType, fileName, fileData)
  • Metoda: Generate Certificate (POST, application/json, parametry: method, subjectCN, issuerCN, serialNumber, validFrom, validTo, password)
  • Metoda: Sign PDF (POST, application/json, parametry: method, inputPdf, pfxFile, pfxPassword)

2. Punkt końcowy pobierania dokumentów (/webhook/docu-download)

Obsługuje pobieranie przetworzonych dokumentów:

  • Metoda: Download Signed PDF (GET, application/json, parametry: method, fileType, fileName)

Kluczowe sekcje workflow

Workflow jest zorganizowany w logiczne sekcje z jasno określonymi odpowiedzialnościami:

  • Przetwarzanie żądań: Analizuje przychodzące dane webhook
  • Routing metod: Kieruje żądania do odpowiednich handlerów
  • Zarządzanie dokumentami: Obsługuje operacje na plikach i przechowywanie
  • Operacje kryptograficzne: Zarządza funkcjami podpisywania i certyfikatów
  • Formatowanie odpowiedzi: Strukturyzuje i zwraca wyniki


   Skopiuj kod szablonu   
{"id":"V1vbO2m79cFNH59h","meta":{"instanceId":"255b605d49a6677a536746e05401de51bb4c62e65036d9acdb9908f6567f0361"},"name":"Basic PDF Digital Sign Service","tags":[],"nodes":[{"id":"a3aa7495-e5a8-4b7f-882a-e642fae414b8","name":"Validate Key Gen Params","type":"n8n-nodes-base.code","position":[-220,220],"parameters":{"jsCode":"// Check required parameters for key generationnconst requiredParams = [n 'subjectCN', 'issuerCN', 'serialNumber', n 'validFrom', 'validTo', 'password'n];nnlet missingParams = [];nconst requestBody = $input.item.json.body || {}; // Access the body objectnnfor (const param of requiredParams) {n if (!requestBody[param]) {n missingParams.push(param);n }n}nnif (missingParams.length > 0) {n return {n json: {n success: false,n message: `Missing required parameters: ${missingParams.join(', ')}`n }n };n}nn// Set default output directory if not providednconst outputDir = $input.item.json.keyPath || '/tmp';nconst timestamp = new Date().getTime();nconst outputPfx = `${outputDir}certificate_${timestamp}.pfx`;nconst outputPrivateKey = `${outputDir}private_${timestamp}.key`;nconst outputCertPem = `${outputDir}certificate_${timestamp}.pem`;nnreturn {n json: {n ...requestBody,n success: true,n outputDir,n outputPfx,n outputPrivateKey,n outputCertPemn }n};n"},"typeVersion":1},{"id":"6a463b95-04e4-421d-b6e0-46fb98c85e20","name":"Validate PDF Sign Params","type":"n8n-nodes-base.code","position":[-220,380],"parameters":{"jsCode":"// Check required parameters for PDF signingnconst requiredParams = ['inputPdf', 'pfxFile', 'pfxPassword'];nn// Access the body object from inputnconst requestBody = $input.item.json.body || {}; nnlet missingParams = [];nfor (const param of requiredParams) {n if (!requestBody[param]) {n missingParams.push(param);n }n}nnif (missingParams.length > 0) {n return {n json: {n success: false,n message: `Missing required parameters: ${missingParams.join(', ')}`n }n };n}nn// Set default output directory if not providednconst pdfDir = $input.item.json.pdfPath || '/tmp';nconst keyDir = $input.item.json.keyPath || '/tmp';nconst outputDir = $input.item.json.pdfPath || '/tmp';nnconst timestamp = new Date().getTime();nconst inputPdfPath = `${pdfDir}${requestBody.inputPdf}`;nconst pfxFilePath = `${keyDir}${requestBody.pfxFile}`;nconst outputPdfPath = `${pdfDir}signed_${timestamp}.pdf`;nnreturn {n json: {n ...requestBody,n success: true,n outputDir,n inputPdfPath,n pfxFilePath,n outputPdfPathn }n};"},"typeVersion":1},{"id":"cec07784-a42b-4443-ad8e-1bd7686558c3","name":"Validate PDF Upload","type":"n8n-nodes-base.code","position":[80,-440],"parameters":{"jsCode":"// Check required parameters for PDF uploadnconst requiredParams = ['fileData'];nnlet missingParams = [];nfor (const param of requiredParams) {n if (!$input.item.json[param]) {n missingParams.push(param);n }n}nnif (missingParams.length > 0) {n return {n json: {n success: false,n message: `Missing required parameters: ${missingParams.join(', ')}`n }n };n}nn// Set default output directory if not providednconst outputDir = $input.item.json.outputDir || '/tmp';nconst timestamp = new Date().getTime();nconst outputPath = $input.item.json.fileName n ? `${outputDir}/${$input.item.json.fileName}` n : `${outputDir}/uploaded_pdf_${timestamp}.pdf`;nnreturn {n json: {n ...$input.item.json,n success: true,n outputDir,n outputPathn }n};"},"typeVersion":1},{"id":"1b9304fd-f31d-45c7-8344-01c779e86f0d","name":"Validate Key Upload","type":"n8n-nodes-base.code","position":[80,-140],"parameters":{"jsCode":"// Check required parameters for key uploadnconst requiredParams = ['fileData'];nnlet missingParams = [];nfor (const param of requiredParams) {n if (!$input.item.json[param]) {n missingParams.push(param);n }n}nnif (missingParams.length > 0) {n return {n json: {n success: false,n message: `Missing required parameters: ${missingParams.join(', ')}`n }n };n}nn// Set default output directory if not providednconst outputDir = $input.item.json.outputDir || '/tmp';nconst timestamp = new Date().getTime();nconst outputPath = $input.item.json.fileName n ? `${outputDir}/${$input.item.json.fileName}` n : `${outputDir}/uploaded_key_${timestamp}.pfx`;nnreturn {n json: {n ...$input.item.json,n success: true,n outputDir,n outputPathn }n};"},"typeVersion":1},{"id":"efd59edb-6952-4165-ab21-745e03db74eb","name":"Generate Keys","type":"n8n-nodes-base.code","position":[20,220],"parameters":{"jsCode":"console.log("!!!!!!!!!" + process.env.NODE_PATH);nn// Key Generation Codenconst forge = require('node-forge');nconst fs = require('fs');nn// Get parameters from inputnconst subjectCN = $input.item.json.subjectCN;nconst issuerCN = $input.item.json.issuerCN;nconst serialNumber = $input.item.json.serialNumber;nconst validFrom = $input.item.json.validFrom;nconst validTo = $input.item.json.validTo;nconst pfxPassword = $input.item.json.password;nconst outputPfx = $input.item.json.outputPfx;nconst outputPrivateKey = $input.item.json.outputPrivateKey;nconst outputCertPem = $input.item.json.outputCertPem;nntry {n // Generate a key pairn const keys = forge.pki.rsa.generateKeyPair(2048);n const privateKey = keys.privateKey;n const publicKey = keys.publicKey;nn // Create a certificaten const cert = forge.pki.createCertificate();n cert.publicKey = publicKey;n cert.serialNumber = serialNumber;nn // Parse date strings (format: YYYYMMDDHHMMSS)n const parseDate = (dateStr) => {n const year = parseInt(dateStr.substring(0, 4));n const month = parseInt(dateStr.substring(4, 6)) - 1; // JS months are 0-basedn const day = parseInt(dateStr.substring(6, 8));n const hour = parseInt(dateStr.substring(8, 10));n const minute = parseInt(dateStr.substring(10, 12));n const second = parseInt(dateStr.substring(12, 14));n n return new Date(year, month, day, hour, minute, second);n };nn cert.validity.notBefore = parseDate(validFrom);n cert.validity.notAfter = parseDate(validTo);nn const attrs = [{n name: 'commonName',n value: subjectCNn }, {n name: 'countryName',n value: 'US'n }, {n shortName: 'ST',n value: 'State'n }, {n name: 'localityName',n value: 'City'n }, {n name: 'organizationName',n value: 'Organization'n }, {n shortName: 'OU',n value: 'Test'n }];nn cert.setSubject(attrs);n cert.setIssuer(attrs); // Self-signed, so issuer = subjectnn // Sign the certificate with the private keyn cert.sign(privateKey, forge.md.sha256.create());nn // Convert to PEM formatn const pemCert = forge.pki.certificateToPem(cert);n const pemPrivateKey = forge.pki.privateKeyToPem(privateKey);nn // Create a PKCS#12 (PFX) filen const p12Asn1 = forge.pkcs12.toPkcs12Asn1(n privateKey, n [cert], n pfxPassword,n { generateLocalKeyId: true, friendlyName: subjectCN }n );nn const p12Der = forge.asn1.toDer(p12Asn1).getBytes();n const p12b64 = forge.util.encode64(p12Der);nn // Save filesn fs.writeFileSync(outputPrivateKey, pemPrivateKey);n fs.writeFileSync(outputCertPem, pemCert);n fs.writeFileSync(outputPfx, forge.util.decode64(p12b64), { encoding: 'binary' });nn return {n json: {n success: true,n message: "Certificate and keys generated successfully",n fileName: outputPfx.split('/').pop(),n filePaths: {n pfx: outputPfx,n privateKey: outputPrivateKey,n certificate: outputCertPemn },n fileNames: {n pfx: outputPfx.split('/').pop(),n privateKey: outputPrivateKey.split('/').pop(),n certificate: outputCertPem.split('/').pop()n }n }n };n} catch (error) {n return {n json: {n success: false,n message: `Error generating keys: ${error.message}`,n error: error.stackn }n };n}"},"typeVersion":1},{"id":"6834b314-dd66-429f-9264-6eba74c5984e","name":"Sign PDF","type":"n8n-nodes-base.code","position":[20,380],"parameters":{"jsCode":"// PDF Signing Codenconst fs = require('fs');nconst forge = require('node-forge');nconst { SignPdf } = require('@signpdf/signpdf');nconst { P12Signer } = require('@signpdf/signer-p12');nconst { plainAddPlaceholder } = require('@signpdf/placeholder-plain');nn// Get parameters from inputn// const inputPdfBase64 = $input.item.json.inputPdf;n// const pfxFileBase64 = $input.item.json.pfxFile;nconst pfxPassword = $input.item.json.pfxPassword;nconst inputPdfPath = $input.item.json.inputPdfPath;nconst pfxFilePath = $input.item.json.pfxFilePath;nconst outputPdfPath = $input.item.json.outputPdfPath;nntry {n // Read the PDFn const pdfBuffer = fs.readFileSync(inputPdfPath);nn // Add a signature placeholdern const pdfWithPlaceholder = plainAddPlaceholder({n pdfBuffer,n reason: 'Digital Signature',n contactInfo: 'info@example.com',n location: 'New York, USA',n signatureLength: 8192 // Ensure enough space for signaturen });n n // Read the P12 filen const p12Buffer = fs.readFileSync(pfxFilePath);nn // Create a signer instancen const signer = new P12Signer(p12Buffer, {n passphrase: pfxPasswordn });n n // Create SignPdf instance and sign the PDFn const signPdfInstance = new SignPdf();n const signedPdf = await signPdfInstance.sign(pdfWithPlaceholder, signer);n n // Write the signed PDF to filen fs.writeFileSync(outputPdfPath, signedPdf);n console.log(`PDF successfully signed: ${outputPdfPath}`);nn return {n json: {n success: true,n message: "PDF successfully signed",n filePath: outputPdfPath,n fileName: outputPdfPath.split('/').pop()n }n };n} catch (error) {n return {n json: {n success: false,n message: `Error signing PDF: ${error.message}`,n error: error.stackn }n };n}"},"typeVersion":1},{"id":"80e56344-b037-4c4f-8f18-b419e9c7516b","name":"Prepare Success Response","type":"n8n-nodes-base.set","position":[1380,40],"parameters":{"values":{"string":[{"name":"serverFileName","value":"={{ $json.fileName }}"}],"boolean":[{"name":"success","value":true}]},"options":{},"keepOnlySet":true},"typeVersion":1},{"id":"e32d1e3e-6877-4c1f-b46a-0c3c67fba609","name":"Switch Operation","type":"n8n-nodes-base.switch","position":[-520,200],"parameters":{"rules":{"values":[{"outputKey":"upload","conditions":{"options":{"version":2,"leftValue":"","caseSensitive":true,"typeValidation":"strict"},"combinator":"and","conditions":[{"operator":{"type":"string","operation":"equals"},"leftValue":"={{ $json.body.method }}","rightValue":"upload"}]},"renameOutput":true},{"outputKey":"genKey","conditions":{"options":{"version":2,"leftValue":"","caseSensitive":true,"typeValidation":"strict"},"combinator":"and","conditions":[{"id":"4ac6de12-4cb9-454e-a2b8-ebc879e430ba","operator":{"name":"filter.operator.equals","type":"string","operation":"equals"},"leftValue":"={{ $json.body.method }}","rightValue":"genKey"}]},"renameOutput":true},{"outputKey":"signPdf","conditions":{"options":{"version":2,"leftValue":"","caseSensitive":true,"typeValidation":"strict"},"combinator":"and","conditions":[{"id":"d8fca3d7-e1da-486e-b6bb-01a676d888cb","operator":{"name":"filter.operator.equals","type":"string","operation":"equals"},"leftValue":"={{ $json.body.method }}","rightValue":"signPdf"}]},"renameOutput":true},{"outputKey":"download","conditions":{"options":{"version":2,"leftValue":"","caseSensitive":true,"typeValidation":"strict"},"combinator":"and","conditions":[{"id":"6ae9a589-9208-48b0-873b-2b3c4db22718","operator":{"name":"filter.operator.equals","type":"string","operation":"equals"},"leftValue":"={{ $json.body.method }}","rightValue":"download"}]},"renameOutput":true}]},"options":{}},"typeVersion":3.2},{"id":"f28cb401-f180-4877-9440-aeb0c9f07791","name":"Switch Upload 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}}","operation":"write"},"typeVersion":1},{"id":"0f6dfb44-8d83-4539-bec8-4aa4066c42bb","name":"Read PDF File from Disk","type":"n8n-nodes-base.readWriteFile","position":[620,-440],"parameters":{"options":{},"fileSelector":"={{ $json.fileName }}"},"typeVersion":1},{"id":"59e18825-dd53-4b09-aefc-0c567ada7f1a","name":"Convert PFX to File","type":"n8n-nodes-base.convertToFile","position":[260,-140],"parameters":{"options":{"fileName":"={{ $json.body.fileName }}","mimeType":"={{ $json.fileData.fileData.mimeType }}"},"operation":"toBinary","sourceProperty":"fileData.fileData.data"},"typeVersion":1.1},{"id":"d079d173-5c68-4b57-9efd-29a3ec89b6c0","name":"Write PFX File to Disk","type":"n8n-nodes-base.readWriteFile","position":[440,-140],"parameters":{"options":{"append":false},"fileName":"={{ $('set file path').item.json.pdfPath }}{{ $('Prepare input params').item.json.uniqueFileName }}","operation":"write"},"typeVersion":1},{"id":"a2517543-fa29-4097-8f69-0c8cea6f9e07","name":"Read PFX File 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}}"},{"id":"9af39faf-abf6-4d74-9001-444179abdaeb","name":"fileName","type":"string","value":"={{ $json.fileName }}"}]}},"typeVersion":3.4},{"id":"5a2405a6-daef-4e57-8ab8-62dc9600cd26","name":"check success","type":"n8n-nodes-base.if","position":[1180,180],"parameters":{"options":{},"conditions":{"options":{"version":2,"leftValue":"","caseSensitive":true,"typeValidation":"strict"},"combinator":"and","conditions":[{"id":"dded9782-4619-4dc7-b264-f5e029099750","operator":{"type":"boolean","operation":"true","singleValue":true},"leftValue":"={{ $json.success }}","rightValue":""}]}},"typeVersion":2.2},{"id":"e7c2412e-eba2-4092-808f-808a27c2a64f","name":"set downlowd file info","type":"n8n-nodes-base.set","position":[-220,740],"parameters":{"options":{},"assignments":{"assignments":[{"id":"f7affa96-85bc-4879-8ca3-aaabd985f67b","name":"fullFileName","type":"string","value":"={{ $json.body.fileName.endsWith('.pdf') ? $json.pdfPath + $json.body.fileName : $json.keyPath + $json.body.fileName }}"}]}},"typeVersion":3.4},{"id":"5710c64c-5edf-4de8-bb0a-dd9379c6ba1e","name":"Read download file from Disk","type":"n8n-nodes-base.readWriteFile","position":[0,740],"parameters":{"options":{},"fileSelector":"={{ $json.fullFileName }}"},"typeVersion":1},{"id":"c6c8aea2-a770-4e32-94b5-c4b9f18ea3fe","name":"API POST Endpoint","type":"n8n-nodes-base.webhook","position":[-900,220],"webhookId":"0c12b17f-77a7-46b2-99a0-432b29b58dfb","parameters":{"path":"docu-digi-sign","options":{"binaryData":false},"httpMethod":"POST","responseMode":"responseNode"},"typeVersion":1},{"id":"c7387236-4d72-4123-b181-31059c7fb973","name":"API GET Endpoint","type":"n8n-nodes-base.webhook","position":[-900,560],"webhookId":"71854b24-a2b8-4cae-bb5d-3959f1573974","parameters":{"path":"docu-download","options":{},"responseMode":"responseNode"},"typeVersion":2},{"id":"c87290be-95fd-4edf-8993-b0710714919b","name":"POST Success Response","type":"n8n-nodes-base.respondToWebhook","position":[1540,120],"parameters":{"options":{}},"typeVersion":1},{"id":"501c7371-99a5-4d2f-bd54-ed8a9e8a67a9","name":"POST Error Response","type":"n8n-nodes-base.respondToWebhook","position":[1540,280],"parameters":{"options":{}},"typeVersion":1},{"id":"3905360c-581c-4588-a509-7329e73a7ed6","name":"GET Respond to Webhook","type":"n8n-nodes-base.respondToWebhook","position":[240,740],"parameters":{"options":{"responseHeaders":{"entries":[{"name":"comment-dispositions","value":"=attachment; filename={{ $json.fileName }}"}]}},"respondWith":"binary"},"typeVersion":1.1},{"id":"088c46b6-0d52-4059-877c-bb38408b4c22","name":"Sticky Note","type":"n8n-nodes-base.stickyNote","position":[-320,100],"parameters":{"width":740,"height":440,"content":"# Cryptographic Operationsn## Generate Certificate and Sign PDF"},"typeVersion":1},{"id":"6be21f42-4d11-4dc3-9d01-afed8afcde02","name":"Sticky Note1","type":"n8n-nodes-base.stickyNote","position":[-320,600],"parameters":{"width":740,"height":320,"content":"# Document Managementn## Download documentn"},"typeVersion":1},{"id":"8972ffd2-ae7e-4999-ba31-242d23734498","name":"Sticky Note2","type":"n8n-nodes-base.stickyNote","position":[-320,-560],"parameters":{"width":1380,"height":620,"content":"# Document Managementn## Upload Certificate and Upload PDFn"},"typeVersion":1},{"id":"262cfa68-f9bd-4145-9101-1bf3a3d2ea4a","name":"Sticky Note3","type":"n8n-nodes-base.stickyNote","position":[-1100,-80],"parameters":{"color":4,"width":740,"height":840,"content":"# Request Processing and Method Routing"},"typeVersion":1},{"id":"3d3620d6-4937-483d-a2e2-0a1089415a44","name":"Sticky Note4","type":"n8n-nodes-base.stickyNote","position":[1120,-100],"parameters":{"color":4,"width":680,"height":560,"content":"# Response Checking and Formatting"},"typeVersion":1}],"active":true,"pinData":{},"settings":{"executionOrder":"v1"},"versionId":"6ee0f9e6-8c82-46e1-a263-5fedb2e71ad5","connections":{"Sign PDF":{"main":[[{"node":"check success","type":"main","index":0}]]},"Generate Keys":{"main":[[{"node":"check success","type":"main","index":0}]]},"check success":{"main":[[{"node":"Prepare Success Response","type":"main","index":0}],[{"node":"POST Error Response","type":"main","index":0}]]},"set file path":{"main":[[{"node":"Switch Operation","type":"main","index":0}]]},"API GET Endpoint":{"main":[[{"node":"set file path","type":"main","index":0}]]},"Switch Operation":{"main":[[{"node":"Prepare input params","type":"main","index":0}],[{"node":"Validate Key Gen Params","type":"main","index":0}],[{"node":"Validate PDF Sign Params","type":"main","index":0}],[{"node":"set downlowd file info","type":"main","index":0}]]},"API POST Endpoint":{"main":[[{"node":"set file path","type":"main","index":0}]]},"Switch Upload Type":{"main":[[{"node":"Validate PDF Upload","type":"main","index":0}],[{"node":"Validate Key Upload","type":"main","index":0}]]},"Convert PDF to File":{"main":[[{"node":"Write PDF File to Disk","type":"main","index":0}]]},"Convert PFX to File":{"main":[[{"node":"Write PFX File to Disk","type":"main","index":0}]]},"Validate Key Upload":{"main":[[{"node":"Convert PFX to File","type":"main","index":0}]]},"Validate PDF Upload":{"main":[[{"node":"Convert PDF to File","type":"main","index":0}]]},"Check PDF file is OK":{"main":[[{"node":"check success","type":"main","index":0}]]},"Check PFX file is OK":{"main":[[{"node":"check success","type":"main","index":0}]]},"Prepare input params":{"main":[[{"node":"Switch Upload Type","type":"main","index":0}]]},"GET Respond to Webhook":{"main":[[]]},"Write PDF File to Disk":{"main":[[{"node":"Read PDF File from Disk","type":"main","index":0}]]},"Write PFX File to Disk":{"main":[[{"node":"Read PFX File from Disk","type":"main","index":0}]]},"set downlowd file info":{"main":[[{"node":"Read download file from Disk","type":"main","index":0}]]},"Read PDF File from Disk":{"main":[[{"node":"Check PDF file is OK","type":"main","index":0}]]},"Read PFX File from Disk":{"main":[[{"node":"Check PFX file is OK","type":"main","index":0}]]},"Validate Key Gen Params":{"main":[[{"node":"Generate Keys","type":"main","index":0}]]},"Prepare Success Response":{"main":[[{"node":"POST Success Response","type":"main","index":0}]]},"Validate PDF Sign Params":{"main":[[{"node":"Sign PDF","type":"main","index":0}]]},"Read download file from Disk":{"main":[[{"node":"GET Respond to Webhook","type":"main","index":0}]]}}}
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