在本章中,我们将重点介绍RSA密码加密的不同实现及其所涉及的功能.您可以引用或包含此python文件以实现RSA密码算法实现.
加密算法模块
加密算法包含的模块如下
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from Crypto.PublicKey import RSA from Crypto.Cipher import PKCS1_OAEP from Crypto.Signature import PKCS1_v1_5 from Crypto. Hash import SHA512, SHA384, SHA256, SHA, MD5 from Crypto import Random from base64 import b64encode, b64decode hash = "SHA-256" |
哈希值初始化
为了更好的安全性,我们将哈希值初始化为SHA-256.我们将使用函数生成新密钥或一对公钥和私钥.
使用以下代码.
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def newkeys(keysize): random_generator = Random.new().read key = RSA.generate(keysize, random_generator) private, public = key, key.publickey() return public, private def importKey(externKey): return RSA.importKey(externKey) |
函数algorithm
对于加密,在RSA之后使用以下函数algorithm:
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def encrypt(message, pub_key): cipher = PKCS1_OAEP.new(pub_key) return cipher.encrypt(message) |
两个参数是必需的:消息和 pub_key ,它指的是公钥.公钥用于加密,私钥用于解密.
加密程序的完整代码
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from Crypto.PublicKey import RSA from Crypto.Cipher import PKCS1_OAEP from Crypto.Signature import PKCS1_v1_5 from Crypto. Hash import SHA512, SHA384, SHA256, SHA, MD5 from Crypto import Random from base64 import b64encode, b64decode hash = "SHA-256" def newkeys(keysize): random_generator = Random.new().read key = RSA.generate(keysize, random_generator) private, public = key, key.publickey() return public, private def importKey(externKey): return RSA.importKey(externKey) def getpublickey(priv_key): return priv_key.publickey() def encrypt(message, pub_key): cipher = PKCS1_OAEP.new(pub_key) return cipher.encrypt(message) |
以上就是python密码学RSA密码加密教程的详细内容,更多关于python密码学RSA加密的资料请关注服务器之家其它相关文章!
原文链接:https://www.it1352.com/OnLineTutorial/cryptography_with_python/cryptography_with_python_rsa_cipher_encryption.html