python rsa 加密解密

 #/usr/bin/env python# -*- coding: utf-8 -*-import rsaimport sysimport base64# 打印 python 版本 与 windows 系统编码print("---- 1 ----")print(sys.version)print(sys.getdefaultencoding())print(sys.getfilesystemencoding())# 先生成一对密钥，然后保存.pem格式文件，当然也可以直接使用print("---- 2 ----")(pubkey, privkey) = rsa.newkeys(1024)pub = pubkey.save_pkcs1()print(type(pub))pubfile = open('public.pem','w+')pubfile.write(pub.decode('utf-8'))pubfile.close()print("---- 3 ----")pri = privkey.save_pkcs1()print(type(pri))prifile = open('private.pem','w+')prifile.write(pri.decode('utf-8'))prifile.close()# load公钥和密钥print("---- 4 ----")message = 'dPabdbGDpFTrwwgydVafdlsadlfsal%46645645s'print('message:',type(message))with open('public.pem') as publickfile: p = publickfile.read() print(type(p)) pubkey = rsa.PublicKey.load_pkcs1(p.encode('utf-8'))with open('private.pem') as privatefile: p = privatefile.read() print(type(p)) privkey = rsa.PrivateKey.load_pkcs1(p.encode('utf-8'))# 用公钥加密、再用私钥解密crypto = rsa.encrypt(message.encode('utf-8'),pubkey)print(crypto)print("---- 5 ----")print('crypto:',type(crypto))print('cry_base64:',base64.encodestring(crypto))print('cry_base64_utf8:',base64.encodestring(crypto).decode('utf-8'))# 保存到本地文件cry_file = open('cry_file.txt','w+')cry_file.write(base64.encodestring(crypto).decode('utf-8'))cry_file.close()print("---- 6 ----")# 从本地文件读取cry_file = open('cry_file.txt','r')cry_text = ''for i in cry_file.readlines(): cry_text += iprint('cry_text_type:',type(cry_text))print('cry_text:',cry_text)print('cry_base64:',cry_text.encode('utf-8'))crypto_tra = base64.decodestring(cry_text.encode('utf-8'))print("---- 7 ----")assert crypto == crypto_traprint(crypto)print("---- 8 ----")plaintext = rsa.decrypt(crypto,privkey)assert message == plaintext.decode('utf-8')print(plaintext.decode('utf-8'))