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    Using JSS

    Using JSS


    If you have already built JSS, or if you are planning to use a binary release of JSS, here's how to get JSS working with your code.

    Gather Components
    Setup your runtime environment
    Initialize JSS in your application

    Gather components

    1. You need the JSS classes and the NSPR, NSS, and JSS shared libraries.


    2. NSPR and NSS Shared Libraries

      JSS uses the NSPR and NSS libraries for I/O and crypto. JSS version 3.0 linked statically with NSS, so it only required NSPR. JSS versions 3.1 and later link dynamically with NSS, so they also require the NSS shared libraries.

      The exact library names vary according to the convention for each platform. For example, the NSPR library is called nspr4.dll or libnspr4.dll on Windows and on Solaris. The following table gives the core names of the libraries, omitting the platform-specific prefix and suffix.


      JSS Dependencies
      Core Library Name Description Binary Release Location
      nspr4 NSPR OS abstraction layer
      plc4 NSPR standard C library replacement functions
      plds4 NSPR data structure types
      nss3 NSS crypto, PKCS #11, and utilities
      ssl3 NSS SSL library
      smime3 NSS S/MIME functions and types
      nssckbi PKCS #11 module containing built-in root CA certificates. Optional.
      freebl_* Processor-specific optimized big-number arithmetic library. Not present on all platforms. More information...
      fort FORTEZZA support. Optional
      swft PKCS #11 module implementing FORTEZZA in software. Optional.

      If you built JSS from source, you have these libraries in the mozilla/dist/<platform>/lib directory of your build tree. If you are downloading binaries, get them from the binary release locations in the above table. You need to select the right version of the components, based on the version of JSS you are using. Generally, it is safe to use a later version of a component than what JSS was tested with. For example, although JSS 4.2 was tested with NSS 3.11.


      Component Versions
      JSS Version Component Tested Version
      JSS 4.2 NSPR 4.6.4
      NSS 3.11.4
      JSS 3.4 NSPR 4.2.2
      NSS 3.7.3
      JSS 3.3 NSPR 4.2.2
      NSS 3.6.1 or 3.7
      JSS 3.2 NSPR 4.2 or 4.1.2
      NSS 3.4.2
      JSS 3.1.1 NSPR 4.1.2
      NSS 3.3.1
      JSS 3.1 NSPR 4.1.2
      NSS 3.3
      JSS 3.0 NSPR 3.5.1


    3. JSS Shared Library

      The JSS shared library is jss4.dll (Windows) or (Unix). If you built JSS from source, it is in mozilla/dist/<platform>/lib. If you are downloading binaries, get it from


    4. JSS classes

      If you built JSS from source, the compiled JSS classes are in mozilla/dist/classes[_dbg]. You can put this directory in your classpath to run applications locally; or, you can package the class files into a JAR file for easier distribution:

      cd mozilla/dist/classes[_dbg]
      zip -r ../jss42.jar .

      If you are downloading binaries, get jss42.jar from

    Setup your runtime environment

    You need to set some environment variables before building and running Java applications with JSS.

      Include the path containing the JSS classes you built, or the path to jss42.jar. (The path to jss34.jar ends with the string "/jss42.jar". It is not just the directory that contains jss42.jar.)


      LD_LIBRARY_PATH (Unix) / PATH (Windows)
      Include the path to the NSPR, NSS, and JSS shared libraries.

    Initialize JSS in your application

    Before calling any JSS methods, you must initialize JSS by calling one of the CryptoManager.initialize methods. See the javadoc for more details.



    Document Tags and Contributors

    Contributors to this page: kwilson, Sheppy
    Last updated by: Sheppy,