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crypto - The Crypto Application
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.
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.
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.