Workflows and Digital Signatures
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Shirak Avakian presented at the Adobe ColdFusion Summit 2015 on workflow in ColdFusion, PDF digital signatures, and the directory watcher. The presentation introduced the speaker and covered topics including how to create workflows in ColdFusion using the CFWorkflow component from GitHub, how digital signatures and public key infrastructure work with encrypting and validating PDFs in ColdFusion, and how to set up a directory watcher gateway to monitor a folder for changes. Demo code was provided to illustrate these ColdFusion features.
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Workflows and Digital Signatures
- 1. Presented by Shirak Avakian Adobe ColdFusion Summit 2015
- 2. Who am I? • Shirak Avakian • Senior Web Architect • Century-National Insurance • CFFlex Technology, INC. Adobe ColdFusion Summit 2015 • @ShirakAvakian • [email protected] • http://cf-click.blogspot.com/ Connect
- 3. • Workflow in ColdFusion • PDF Digital Signatures • Directory Watcher Adobe ColdFusion Summit 2015
- 4. Is there ColdFusion workflow service? What is a workflow? A workflow consists of an orchestrated and repeatable pattern of business activity enabled by the systematic organization of resources into processes that transform materials, provide services, or process information. (Wikipedia) Adobe ColdFusion Summit 2015
- 5. Adobe ColdFusion Summit 2015
- 6. Adobe ColdFusion Summit 2015
- 7. Adobe ColdFusion Summit 2015
- 8. What do I need to know before creating workflow? • Business Requirements Adobe ColdFusion Summit 2015 • Process Diagram • Workload • Hardware • Availability • Storage
- 9. To Create workflow in ColdFusion • Download CFWorkflow from Github https://github.com/cfclick/CFWorkflow • Create new Component following specific name convention {name}Activity.cfc • Extend from BaseActivity • Implement IActivity Adobe ColdFusion Summit 2015
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- 11. Adobe ColdFusion Summit 2015 http://localhost/CFSummit2015/Demo/Demo1/TestThreeActivities.cfm
- 12. Adobe ColdFusion Summit 2015 • Digital signature • Public Key Infrastructure (PKI)
- 13. A digital signature is a mathematical scheme for demonstrating the authenticity of a digital message or document. A valid digital signature gives a recipient reason to believe that the message was created by a known sender. Digital signature Public Key Infrastructure (PKI) Set of people, policies, procedures, hardware, and software used in creating, distributing, managing, and using the digital IDs that contain the public/private key pairs used when signing a PDF. PKI generally refers to the digital ID issuers, users, administrators, and any hardware software used in those workflows. Adobe ColdFusion Summit 2015
- 14. What are you talking about? No worries I promise to explain it! Special Safe box example Adobe ColdFusion Summit 2015
- 15. Private Key Certificate Public Key Certificate Public Key Infrastructure (PKI) Adobe ColdFusion Summit 2015 Digital signature
- 16. Adobe ColdFusion Summit 2015
- 17. Adobe ColdFusion Summit 2015 Symmetric key algorithm Asymmetric key algorithm
- 18. How to generate digital certificate? • Adobe Acrobat • Open source tools like openssl or keytool • DigiSigner certificate generation • IIS Server Manager • Many more.. my_keystore.pfx is the key store file. my_password is the password. validity is the number of days your certificate will stay valid. RSA is the algorithm used to generate the cryptographic keys. 2048 is the length of the cryptographic keys. pkcs12 is the format of the key store file.
- 19. ColdFusion 11 has added the following new attributes to the <cfpdf> tag: Adobe ColdFusion Summit 2015 • readsignaturefields • signaturefieldname • unsignall • unsign • validatesignature • keystore • keystorepassword • keyalias • author • height • width • position
- 20. Adobe ColdFusion Summit 2015 Reads all the signature fields and returns a query object in the variable Result of unsigned PDF signature read is query as shown below Result of signed PDF signature read is query as shown below Action = readsignaturefileds
- 21. Action = sign,unsign,unsignall Adobe ColdFusion Summit 2015
- 22. Sign predefined signature field Action = sign, signaturefieldname Adobe ColdFusion Summit 2015 Use Adobe Acrobat to create pre defined signature field Action = validatesignature Array of Invalid signatures names Boolean value “yes” “true” if all signature fields are valid
- 23. Adobe ColdFusion Summit 2015 http://localhost/CFSummit2015/Demo/Demo2/index.cfm http://localhost/CFSummit2015/Demo/Demo2/signed_pdf.cfm
- 24. Adobe ColdFusion Summit 2015 An internal, one way, gateway. It has a single thread that periodically checks a local directory and sends a message to a CFC when the directory contents change. (ColdFusion Docs) Directory Watcher How to setup directory watcher? 1- ColdFusion Admin – Event Gateway 2- Enable Event Gateway 3- Create new gateway instance
- 25. Adobe ColdFusion Summit 2015 Gateway ID : Gateway Name Gateway Type : Select Directory Watcher gateway CFC Path : ColdFusion Component that will handle the events Configuration File: Configuring how to handle directory watcher events Copy directory-watcher.cfg from cfusiongatewayconfig to your project folder
- 26. Adobe ColdFusion Summit 2015 http://localhost/CFSummit2015/BecomeBroker/index.cfm
- 27. Adobe ColdFusion Summit 2015 • https://www.digisigner.com/ Adobe • http://help.adobe.com/en_US/acrobat/X/pro/using/WSAC8084C2-14F7-4841- 9EF8-92106D22C3DB.w.html • http://www.adobepress.com/articles/article.asp?p=1708161&seqNum=4 Microsoft • https://technet.microsoft.com/en-us/library/cc545901(v=office.12).aspx Digisigner Demo source code • https://github.com/cfclick/CFSummit2015
- 28. Adobe ColdFusion Summit 2015 Don’t leave hold of your common sense. Think about what you’re doing and how the technology can enhance it. Don’t think about technology first. (Esther Dyson)