Step 1 - Install gcc/make
$ sudo yum install gcc
$ sudo yum install make
$ sudo yum install gmp
$ sudo yum install python-devel
Step 2 - Install MPIR
$ wget https://www.mpir.org/mpir-2.7.2.zip
$ unzip mpir-2.7.2.zip
$ cd mpir-2.7.2
$ sudo ./configure
$ sudo make
$ sudo make check
$ sudo make install
Step 3 - Install PyCrypto
$ export ac_cv_func_malloc_0_nonnull=yes
$ pip install pycrypto
大功告成，如果没有pip记得先装个