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apsec Webcast Digital Signature In Electronic Workflow Environments

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Presentation on Digital Signatures in Electronic Workflow Environments and Document Signature for PDF, PDF/A, Office Documents, Graphic Documents

Presentation on Digital Signatures in Electronic Workflow Environments and Document Signature for PDF, PDF/A, Office Documents, Graphic Documents

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  • 1. Digital Signature in Electronic Workflow Environments Eng. Andreas Schuster Business Development Manager Applied Security (apsec) M.E.
  • 2. Contents
    • Difference of
      • Electronic Signature
      • Visual Signature
      • Digital Signature
    • Signing of electronic documents (Live Demo)
    • Verifying of digital signatures
    • Usage of smartcard & fingerprint
    • Solutions to be added
    • Advantages, Integration Examples
  • 3. “ Electronic Signature” – Is it new?
    • Electronic signature definition: “A signature that consists of one or more letters, characters, numbers or other symbols in digital form incorporated in, attached to or associated with an electronic document or transaction.”
    • Samples:
      • PIN for ATM
      • Digital pen or signature pad for
        • Signing a credit or debit slip
        • POS transaction
        • handover certificate / certificate of receipt (delivery)
      • Fax transmission with a stamp and/or signature
    • Security:
      • Electronic signature is not protected by cryptographic methods, but considered as enforceable contract in most countries.
      • Forging and spoofing can not be prevented due the fact that the e-signature can be copied easily.
  • 4. Electronic “Visual” Signature
    • Process of adding a handwritten signature to a electronic document.
    • Either: Signature line can be scanned once and the image can be added to the document later
    • Or: signature is captured every time by the use of a signature pad
    • Security:
      • Signature graphic can be protected, but still can be extracted from any signed document and re-used unauthorized.
      • Automatic verification of the entered signature is not possible. Manual forensic signature analysis would be required.
    Signature Scan Interlink ePad II approx. US$ 160
  • 5. Electronic “Digital” Signature
    • Digital signature uses a private (and secret) key to generate a digital signature for a specific document.
    • Anyone can use this document including the attached digital signature plus a public key to verify the authenticity of the document.
    • Security:
      • Digital signature provides non-repudiation and allows originator authentication and identification.
      • Private key (the secret used to generate the digital signature) should be protected with 2-factor authentication
      • Digital signature cannot be copied, because it is valid for a single document only.
  • 6. Adding an Digital Signature
    • Demonstration of an Office 2007 Signature
    • Demonstration of a PDF Signature with apsec fide AS ® sign 2.0
  • 7. Principle of digitally signing
    • Build a one-way hash of the document
    • Encrypt the hash value with the private key of the signer
    • Encrypted hash + certificate = signature
    • Certain document- types allow to attach signature (e.g. PDF, PDF/A or XML)
    • For other documents the signature could be saved as an extra file
    unsigned electronic document one-way hash Key-card encrypted one-way hash certificate signed electronic document
  • 8. Verification of electronically signed documents
    • Separate signature from document
    • Check certificate (e.g. CRL, OCSP)
    • Decrypt hash with certificate
    • Compute hash of document
    • Compare the two hash values
    unsigned electronic document one-way hash encrypted one-way hash certificate signed electronic document encrypted one-way hash certificate decrypted one-way hash check if valid compare
  • 9. Signature Verification of PDF-Documents
    • PDF can be verified with Acrobat Reader
    • A simple click on the sign symbol in the document is enough
    • Certificates can be checked offline or online
  • 10.
    • Media to store the Private Key
      • PKCS#12 – software certificate
      • PKCS#11 – smartcard or USB-token
        • USB-token
        • Smartcard + smartcard reader
      • Fingerprint Biometric
        • e.g. Feitian BioPass 3000
    • Public Key and the Digital Certificate
      • Is used to verify the signature and is stored together with the document
      • Can define a time frame the keys/trusts are valid
    Usage of Smartcards and Fingerprint Cryptographic Smartcard, Cryptographic USB-Token, Cryptographic Fingerprint Reader: 32K-72K secure memory, RSA key generation on card, optional biometric match on card
  • 11. Solutions to be added: fide AS ® sign
    • Server or client based digital signing solution
    • Modular concept allows combining:
      • Integration interfaces:
        • GUI
        • Batch-mode
        • Email / SMTP connector
        • SOAP
      • Signature and document types:
        • PDF (embedded)
        • XML (embedded)
        • CMS-signature (for any document)
      • Signature quality:
        • from software keys for internal use
        • to different hardware solutions (like smart cards, tokens, biometric /w crypto chip)
  • 12.
    • Using electronic documents saves time and money:
      • No paper / printing / mailing cost
      • Accelerated workflow
      • Easy, multi-user document archives
    • Sign electronic documents to:
      • Protect documents from manipulation
      • Secure an approval process
      • Identify the signer
      • Make an electronic document legally binding
    • Digital Signature is legalized in most countries including the U.A.E., see TRA law from 2006: http://www.tra.ae/TRA-eCommerce-resolutions.php
    Usability & Security Advantages
  • 13. Technical Advantages
    • Easy-to-use
    • apsec CA is available to issue digital IDs
    • One PIN entry for thousands of signatures – even when using smart cards
    • Adjustable to your requirements
    • Works with most common key media types like
      • Smart cards
      • USB-token
      • HSM Module
      • Biometric devices with crypto chip
      • Key files
    Cryptographic Smartcard, USB-token, HSM, or Biometric: 32K-128K secure memory, RSA key generation on card, opt. biometric match on card
  • 14.
    • Internal workflows
      • Simplify and accelerate work processes
      • Archive signed electronic documents to:
        • Make sure that hat the document is genuine
        • Enable multi-user reading
      • Reduced paper and printing cost
    • Electronic contracts
      • Multi-signing secures electronic contracts
    • e-billing
      • Save mailing, paper and printing costs
      • Ensure legal and secure e-billing
    Application Advantages
  • 15. Integration Examples Workflow
    • Supported Integration Interfaces for Workflow Applications
      • Java Wrapper (portlet)
      • IBM FileNet P8 Connector: Universal File Importer
      • Dokumentum Check-in Filter
      • Electronic Workflow Check-In / Check-Out
      • J2EE (pure Java portlet)
      • SOAP 1.1/1.2 XML Envelope
      • Native XML
    • Batch signing (in-folder, out-folder)
    • Command line tool for simplest integration
    • Email / SMTP interface
  • 16. Reference Story: City of Oberursel
    • Use PKI solution to digital sign workflow documents
    • The documents are processed, signed and forwarded to the next person in charge.
    • Implemented: 2004, enhanced 2006
    • Authentication: fingerprint + smartcard
    • apsec products integrated:
      • fide AS ® sign
      • fide AS ® miniCA
    public sector
  • 17. See you soon on our next Webcast!
    • Enhanced Encryption Technologies for Enterprises (planned 3 rd Week of June)
      • Network / Server Encryption
      • Database Encryption
      • Email Encryption
    • All participants will receive a free copy of our PC / notebook encryption solution fide AS ® file private
  • 18. Thanks for your attention! Speak with us.. apsec offers full service for all aspects of data security. Applied Security GmbH Industriestraße 16 D-63811 Stockstadt Fon: +49(0)6027/4067-0 Fax: +49(0)6027/4067-99 Internet: http://www.apsec.de email: info@apsec.de Your contact: Andreas Schuster Applied Security UAE, Dubai [email_address]