Description of problem:
Pushing MD5 - signed content (RHEL-5 package) from a FIPS enabled RHEL
client system to Satellite 5.6 fails with the following error:

# rhnpush -c test-channel-01 --server localhost virt-who-0.7-9.el5.noarch.rpm -vvv -u admin
Connecting to http://localhost/APP
Password: 
url is http://localhost/PACKAGE-PUSH
Result codes: 200 OK
Computing checksum and package info. This may take some time ...

ERROR: unhandled exception occurred: (error:060800A3:digital envelope routines:EVP_DigestInit_ex:disabled for fips).

Version-Release number of selected component (if applicable):
rhnpush-5.5.65-5

How reproducible:
Always

Steps to Reproduce:
1. Enable FIPS mode on your client system
2. Install rhnpush package on your client system
3. rhnpush a MD5 signed package to a Satellite 5.6

Actual results:
Above error

Expected results:
Either rhnpush works or it informs the user the operation is not possible given the circumstances.

Additional info:
Seemingly, rhnpush cannot compute MD5 checksum of the package to be uploaded on a system with FIPS
mode enabled.