You should rebuild using libgmp >= 5 to avoid timing attack vulnerability.", PowmInsecureWarning

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su -s /bin/sh -c "glance-manage db_sync" glance
/usr/lib64/python2.6/site-packages/Crypto/Util/number.py:57: PowmInsecureWarning                                                                             : Not using mpz_powm_sec.  You should rebuild using libgmp >= 5 to avoid timing                                                                              attack vulnerability.
  _warn("Not using mpz_powm_sec.  You should rebuild using libgmp >= 5 to avoid                                                                              timing attack vulnerability.", PowmInsecureWarning)
[root@controller ~]# rpm -ivh libgmp
error: open of libgmp failed: No such file or directory

You should rebuild using libgmp >= 5 to avoid timing attack vulnerability.", PowmInsecureWarning

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原文地址：http://www.cnblogs.com/ruiy/p/4691464.html