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Passw3rd

Passw3rd. Remember…. What is it?. Cross-platform, cross-language password management for applications Keeps passwords out of code and configuration files, but keeps them in encrypted files that can be checked into version control

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Passw3rd

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  1. Passw3rd

  2. Remember…

  3. What is it? • Cross-platform, cross-language password management for applications • Keeps passwords out of code and configuration files, but keeps them in encrypted files that can be checked into version control • Keys for dev/test can be checked in, but prod keys must be protected

  4. Nerd stuff • Uses openssl to generate an AES-128 key and IV • The keys are stored in a location protected by OS access controls • The password files are generated which store an encrypted version of the password • Uses the cipher block chaining (CBC) mode of operation • Bonus points: why not 256? Why create an IV?

  5. Gotchas • EACH WEB APPLICATION MUST RUN AS A SEPARATE USER • But you already knew that • Why? Because one application can read any password file owned by the same user/group/etc. • Can’t protect from in memory access • Anyone can put a logger in and see the password…

  6. Give me the run down • Generate keys: passw3rd –g <path> generated keys in /Users/neil (creates .passw3rd-encryptionIV and .passw3rd-encryptionKey) • Create a password file $ passw3rd –e file_name <-p path> <-k path> Enter the password: Wrote password to /Users/neil/file_name • Verify the password can be retrieved $ passw3rd –d file_name <-p path> <-k path> The password is: asdf

  7. Business model

  8. Phase 1: Find Passwords development: adapter: mysql database: rails_development username: app_user password: my super secret password

  9. Phase 1: Collect Passwords development: adapter: mysql database: rails_development username: app_user password: <%=get_password(’app’)%>

  10. Phase 2 CHANGE ALL PASSWORDS!!!!

  11. Phase 3: Profit • Need a password rotation? • Fine, just create a new password file for the affected accounts • Need a new server? • Just make the keys part of your build script • Need to rotate your key? • Trivial, decrypt with the old, encrypt with the new Wait, hold on a second you can’t change… oh yeah that sounds like a good idea…

  12. Performance $ time ruby -e "require 'passw3rd’; X.times {Passw3rd::PasswordService.get_password('asdf')}” • X = 100: 0.281s • X = 1,000: 0.359s • X = 10,000: 1.081s • X = 100,000: 8.372s • X = 1,000,000: 1m21.007s This is without optimization, the file is opened and read during each iteration

  13. Passw3rd Current Support

  14. Passw3rd Future Support • Python • .NET • PHP • <your language here> • Passw3rd is an official OWASP project, so there is an entire community behind it https://www.owasp.org/index.php/OWASP_Passw3rd_Project#tab=Project_About

  15. Roadmap • Key rotation script • Multi-key support • Load encrypted password files in memory for rapid sequential decryption

  16. Go collect some underwear! http://www.itd.umich.edu/posters/

  17. Credits • Warren Liang for creating the project that inspired passw3rd • Josh Drummond for using that project in innovative ways • Joe Milora for the Spring configuration file code

  18. Questions? https://github.com/oreoshake/passw3rd https://github.com/oreoshake/passw3rd_java http://rubygems.org/gems/passw3rd https://www.owasp.org/index.php/OWASP_Passw3rd_Project#tab=Project_About

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