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Crypter is a fully fledged crypto app that can decrypt and encrypt any arbitrary data. This version has been released and fully tested for macOS (OSX), Linux (for all distros via AppImage) and Windows (32 & 64 bit). All core modules (modules that provide the core functionality) are fully tested (90%+ coverage). Some end-to-end tests have been written but end-to-end testing is still mostly a WIP.

Crypter uses a MasterPass (obtained at setup) to derive a MasterPassKey using the PBKDF2 key derivation algorithm from the MasterPass (see below for spec). It then derives very secure encryption keys that are used for the

What's New

  • Addition of settings and menu
  • MasterPass credentials export/import ability
  • Improved portability of CRYPTO files
  • Timing attack vulnerability fixed
  • Improved error reporting
  • Improved styling
  • Enforces use of a stronger password
  • Many bug fixes and improved stability
  • Relaunches automatically after setup


  • OS X 10.9 or later

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Current Version (3.x)


Downloads 140
Version Downloads 140
License Free
Date 23 Jan 2017
Platform Intel 64 / OS X
Price Free
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