Protecting .Net Applications

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Protecting .NET Applications

Publishing with Click Once

• "Unknown Publisher" - Anything outside of the trusted zone won't be able to install without a certificate
• Providers of certificates
  
  • www.verisign.com - $400 for one year org certificate
    • VeriSign?Create Code Signing Standard Digital ID - In conjuction with Microsoft Authenticode Technology, this enables you to digitally sign 32-bit exe (PE files), .cab, .dll and .ocx files.
    • Information needed:
      • Step 1. Enter your Technical Contact information.
      • Step 2. Enter your certificate information.
      • Step 3. Verify your Certificate information and enter a challenge phrase for this certificate
      • Step 4. Enter your Organizational Contact information.
      • Step 5. Enter your payment information.
      • Step 6. Confirm and submit your order.
      • Step 7. Print your order confirmation and review the VeriSign?Create authentication process.
  • www.thawte.com - https://www.thawte.com/codesign/index.html
    • 2-Year US$399.00 Renew: US$319.00 Reissue:FREE
    • 1-Year US$199.00 Renew: US$159.00 Reissue:FREE
  • https://www.ebizid.com/secure/codesigning/index.php?submit_clear=1&submit_skip=1 $199 / 1yr $279 / 2yr
    • http://www.instantssl.com/code-signing/code-signing.html?currency=USD&region=North%20America&country=US - $99/1yr $179/2yr
      • Fully Validated - $50,000 Warranty - Full Support for Microsoft Authenticode technology - Digitally sign 32-bit .exe (PE files), .cab, .dll and .ocx, files - 30 day Refund and Reissue Policy - Telephone email and web support - Express delivery - Starting at only $99 per Certificate per annum
  • www.ascertia.com - Free Digital Certificates

Registration Code Generators

• http://tangentsoft.net/port/ - Registration key code generator for Palm OS. Nice discussion of the issues involved in generating Palm keycodes, length / security tradeoffs, etc.
• http://www.downloadjunction.com/product/software/29255/ - $299 product to generate unlock codes for MS Access applications. Unlock codes incorporate functionality.
• http://www.xheo.com/xdn/documentation/default.aspx?topic=xheo.licensing/html/backgrounders/servers/activationserver.html - Activation Server $260
  • http://www.xheo.com/products/bytesize/formguard/default.aspx - Botbuster $19 / $74.99 / $124.99
• http://answers.google.com/answers/threadview?id=121722
  • http://www.activelock.com/faq.html - From 2000, for protecting VB programs

Protecting Code

• http://www.woodmann.com/fravia/protec.htm - Excellent list of suggestions about protecting software.
  • Also here: http://www.inner-smile.com/nocrack.phtml
• http://www.ftponline.com/vsm/securitytools/page2.asp

Easy .NET Application Installation

• http://thinstall.com/help/?linking_netframework.htm - Lets .NET programs run without installing .NET framework. $5000 - $10000 license fee. $5000 per application.
• http://www.remotesoft.com/linker/index.html - Salamander Linker - Deploy .NET w/o framework $489

.NET Code Obscuration - Obfuscators

• http://www.preemptive.com/ -Dotfuscator free with VS, $395, $1,495
• http://www.remotesoft.com/salamander/obfuscator.html - Salamander Obfuscator $799
• http://www.remotesoft.com/salamander/protector.html - Salamander Protector - $1899 includes the Obfuscator, but not the linker
• http://www.wiseowl.com/products/Products.aspx - Demeanor for .NET - 14 day trial - $799
• http://www.eziriz.com/ - .NET Reactor - Free eval, $134
• http://www.9rays.net/cgi-bin/components.cgi?act=1&cid=86 Spices.net $692
• http://www.junglecreatures.com/DesktopDefault.aspx?tabindex=2&tabid=3 Deploy.net - $550
• http://www.dynu.com/dynuobfuscator.asp
  • http://www.dynu.com/dynustring.asp - .ASP $20 string processing library with 25 functions. $200 for source code - 1 month trial copy
  • http://www.dynu.com/dynusplit.asp - Free utility, $50 for code - file spliter
  • Affiliate program with 20% commission
• http://www.aspose.com/Products/Aspose.Obfuscator/ - Free
  • http://www.aspose.com/Products/Aspose.License/ - Free
• http://dotnetprotector.pvlog.com/ - protects your .NET assemblies and helps you build your own activation system.

 - free demo - 300euro

• Assemblies are compressed, encrypted, and then merged into a Win32 application; decompilation and disassembly tools like ILDASM can't load a native executable.
• http://www.dotsite.spb.ru/Publications/Publication113.aspx - Russian language page about obfuscators

• List of tools
  • http://sharptoolbox.com/Category68fc8748-8956-4ed8-98aa-170a85c36813.aspx

Other related links:

• http://www.suitable.com/docs/signingcerts.html - Creating test certificates

• Auto increment build numbers: http://weblogs.asp.net/egarmon/archive/2003/12/03/41101.aspx

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