What is special about OpenSSL on Redhat?
Red Hat Linux (release 7.0 and later) include a preinstalled limited version of OpenSSL. For patent reasons, support for IDEA, RC5 and MDC2 is disabled in this version. The same may apply to other Linux distributions. Users may therefore wish to install more or all of the features left out. To do this you MUST ensure that you do not overwrite the openssl that is in /usr/bin on your Red Hat machine. Several packages depend on this file, including sendmail and ssh. /usr/local/bin is a good alternative choice. The libraries that come with Red Hat 7.0 onwards have different names and so are not affected. (eg For Red Hat 7.2 they are /lib/libssl.so.0.9.6b and /lib/libcrypto.so.0.9.6b with symlinks /lib/libssl.so.2 and /lib/libcrypto.so.2 respectively). Please note that we have been advised by Red Hat attempting to recompile the openssl rpm with all the cryptography enabled will not work. All other packages depend on the original Red Hat supplied openssl package. It is also worth noting that
