anchor.diff:  - Authentication/Authorization backends (token, http-basic, session).
   - Access rules system.
   
  -link:http://funcool.github.io/buddy-auth/latest/[Documentation]
  +Github: https://github.com/funcool/buddy-auth
  +
  +Documentation: http://funcool.github.io/buddy-auth/latest/
   
   
   === buddy-hashers
   
  -Secure password hashers.
  +The collection of secure password hashers.
   
  -With that list of features:
   
  -- A collection of secure password hashers (bcrypt, scrypt, pbkdf2, ...)
  +Github: https://github.com/funcool/buddy-hashers
   
  -link:http://funcool.github.io/buddy-hashers/latest/[Documentation]
  +Documentation: http://funcool.github.io/buddy-hashers/latest/
   
   
   === buddy-sign
  
positive.code: - Json Web Signature/Token
  - Compact message signing
  
  link:http://funcool.github.io/buddy-sign/latest/[Documentation]
  
  
  == External resources
  
negative.code: 
  Cryptographyc API.
  
  With that maybe incomple list of features:
  
  - cryptographic hash algorithms (digest)
  - key derivation algorithms (kdf)
  