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NAME

       crypto - The Crypto Application

DESCRIPTION

       The  purpose of the Crypto application is to provide message digest and DES encryption for
       SMNPv3. It provides computation of message digests MD5 and SHA, and CBC-DES encryption and
       decryption.

CONFIGURATION

       The following environment configuration parameters are defined for the Crypto application.
       Refer to application(3erl) for more information about configuration parameters.

         debug = true | false <optional>:
           Causes debug information to be written to standard error or standard  output.  Default
           is false.

OPENSSL LIBRARIES

       The  current  implementation  of  the  Erlang  Crypto  application is based on the OpenSSL
       package version 0.9.7 or higher. There are source and binary releases on the web.

       Source releases of OpenSSL can be downloaded from the OpenSSL project home page, or mirror
       sites listed there.

       The  same  URL also contains links to some compiled binaries and libraries of OpenSSL (see
       the Related/Binaries menu) of which the Shining Light Productions Win32 and OpenSSL  pages
       are of interest for the Win32 user.

       For some Unix flavours there are binary packages available on the net.

       If  you cannot find a suitable binary OpenSSL package, you have to fetch an OpenSSL source
       release and compile it.

       You then have to compile and install the  library  libcrypto.so  (Unix),  or  the  library
       libeay32.dll (Win32).

       For  Unix  The  crypto_drv  dynamic  driver  is  delivered  linked to OpenSSL libraries in
       /usr/local/lib, but the default dynamic linking will also accept  libraries  in  /lib  and
       /usr/lib.

       If  that  is  not  applicable  to  the  particular Unix operating system used, the example
       Makefile in the Crypto priv/obj directory, should be used as a  basis  for  relinking  the
       final version of the port program.

       For  Win32  it  is  only  required that the library can be found from the PATH environment
       variable, or that they reside in the appropriate SYSTEM32 directory; hence  no  particular
       relinking is need. Hence no example Makefile for Win32 is provided.

SEE ALSO

       application(3erl)