A problem when I install tahoe on centos 6.4

[xiao_s_yuan]

A problem when I install tahoe on centos 6.4,How can I fix this problem.
ps:I used the command follow:
yum install gcc python-devel sqlite-devel gcc-c++ openssl-devel
yum install cpp glibc-devel glibc-headers kernel-headers libgomp libstdc++-devel e2fsprogs-devel keyutils-libs-devel krb5-devel libselinux-devel libsepol-devel zlib-devel


Warning: dependency 'pyopenssl' could not be imported. pkg_resources thought it
should be possible to import version '0.13' from '/ysd/allmydata-tahoe-1.10.0/su
pport/lib/python2.6/site-packages/pyOpenSSL-0.13-py2.6-linux-x86_64.egg'.
The exception trace was (<type 'exceptions.ImportError'>, 'libssl.so.1.0.0: cann
ot open shared object file: No such file or directory', ('/ysd/allmydata-tahoe-1
.10.0/support/lib/python2.6/site-packages/pyOpenSSL-0.13-py2.6-linux-x86_64.egg/
OpenSSL/__init__.py', 36, '<module>', 'from OpenSSL import crypto')).
For debugging purposes, the PYTHONPATH was
  '/ysd/allmydata-tahoe-1.10.0/support/lib/python2.6/site-packages'
install_requires was
  ['setuptools >= 0.6c6', 'zfec >= 1.1.0', 'simplejson >= 1.4', 'zope.interface
== 3.6.0, == 3.6.1, == 3.6.2, >= 3.6.5', 'Twisted >= 11.0.0', 'foolscap >= 0.6.3
', 'pyOpenSSL', 'Nevow >= 0.6.0', 'pycrypto == 2.1.0, == 2.3, >= 2.4.1', 'pyasn1
 >= 0.0.8a', 'mock >= 0.8.0', 'pycryptopp >= 0.6.0']
sys.path after importing pkg_resources was
  /ysd/allmydata-tahoe-1.10.0/support/bin:
  /ysd/allmydata-tahoe-1.10.0/support/lib/python2.6/site-packages/setuptools-0.6
c16dev4.egg:
  /ysd/allmydata-tahoe-1.10.0/src:
  /ysd/allmydata-tahoe-1.10.0/support/lib/python2.6/site-packages/pycryptopp-0.6
.0.1206569328141510525648634803928199668821045408958-py2.6-linux-x86_64.egg:
  /ysd/allmydata-tahoe-1.10.0/support/lib/python2.6/site-packages/mock-1.0.1-py2
.6.egg:
  /ysd/allmydata-tahoe-1.10.0/support/lib/python2.6/site-packages/pyasn1-0.1.7-p
y2.6.egg:
  /ysd/allmydata-tahoe-1.10.0/support/lib/python2.6/site-packages/pycrypto-2.6.1
-py2.6-linux-x86_64.egg:
  /ysd/allmydata-tahoe-1.10.0/support/lib/python2.6/site-packages/Nevow-0.10.0-p
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