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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)