[菜鸟实录]Python进行RSA加密

一. 安装RSA模块

     参考http://changfengmingzhi.blog.163.com/blog/static/167105288201331594158559/

1. 下载ez_setup.py（http://peak.telecommunity.com/dist/ez_setup.py)

2. 用python解释执行它 （如使用IDLE打开该py文件，按F5解释执行）

3. 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）

4.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

二. 用Python进行RSA加密实例

实例源码如下：

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(class="lazy" data-src, d, n):
    x = pow(class="lazy" data-src, d, n)
    print('*'*77)
    print("Encrypted Data is:")
    print(hex(x))
    print('*'*77)
    return x
    
def my_RSA_decrypt(class="lazy" data-src, e, n):
    y = pow(class="lazy" data-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)
#====================================