一、下载ez_setup.py（http://peak.telecommunity.com/dist/ez_setup.py）
二、用python解释执行它 （如使用IDLE打开该py文件，按F5解释执行）
三、安装完成后，会在scripts文件夹下生成几个exe可执行文件。（如： D:\Python27\Scripts目录下）
四、可以把之前下载的文件rsa-3.1.1-py2.7.egg拷贝到D:\Python27\Scripts目录下, 然后在cmd中切换到D:\Python27\Scripts目录下，执行egg文件：easy_install.exe rsa-3.1.1-py2.7.egg
加密实例
import os
import sys
import math
def GetDataFromFile(filename):
f = open(filename)
n = int(f.read(),16)
print(‘*‘*77)
print(filename)
print(hex(n))
print(‘*‘*77)
return (n)
def my_RSA_encrypt(src, d, n):
x = pow(src, d, n)
print(‘*‘*77)
print("Encrypted Data is:")
print(hex(x))
print(‘*‘*77)
return x
def my_RSA_decrypt(src, e, n):
y = pow(src, e, n)
print(‘*‘*77)
print("Decrypted Data is:")
print(hex(y))
print(‘*‘*77)
return y
path = os.getcwd()
#====================================
fname = path + "\\Firm_N.txt"
plaintData = GetDataFromFile(fname)
fname = path + "\\Manuf_private_d.txt"
d = GetDataFromFile(fname)
fname = path + "\\Manuf_N.txt"
n = GetDataFromFile(fname)
encryptedData = my_RSA_encrypt(plaintData, d, n)
#====================================
fname = path + "\\Firm_public_e.txt"
plaintData = GetDataFromFile(fname)
fname = path + "\\Manuf_private_d.txt"
d = GetDataFromFile(fname)
fname = path + "\\Manuf_N.txt"
n = GetDataFromFile(fname)
encryptedData = my_RSA_encrypt(plaintData, d, n)
#====================================
原文：http://www.cnblogs.com/hyh123/p/7616422.html