Python 官方文档:入门教程 => 点击学习
目录授权身份验证RSA密码解密本章是前一章的延续,我们使用RSA算法逐步实现加密,并详细讨论它. 用于解密密文的函数是as跟随 : def decrypt(ciphertext, p
本章是前一章的延续,我们使用RSA算法逐步实现加密,并详细讨论它.
用于解密密文的函数是as跟随 :
def decrypt(ciphertext, priv_key):
cipher = PKCS1_OAEP.new(priv_key)
return cipher.decrypt(ciphertext)
对于公钥加密或非对称密钥加密,重要的是要保持两个重要的功能,即身份验证和授权.
授权是确认发件人是唯一发送邮件的人的过程.以下代码解释了这个 :
def sign(message, priv_key, hashAlg="SHA-256"):
global hash
hash = hashAlg
signer = PKCS1_v1_5.new(priv_key)
if (hash == "SHA-512"):
digest = SHA512.new()
elif (hash == "SHA-384"):
digest = SHA384.new()
elif (hash == "SHA-256"):
digest = SHA256.new()
elif (hash == "SHA-1"):
digest = SHA.new()
else:
digest = MD5.new()
digest.update(message)
return signer.sign(digest)
身份验证可以通过验证方法解释,如下所示去;
def verify(message, signature, pub_key):
signer = PKCS1_v1_5.new(pub_key)
if (hash == "SHA-512"):
digest = SHA512.new()
elif (hash == "SHA-384"):
digest = SHA384.new()
elif (hash == "SHA-256"):
digest = SHA256.new()
elif (hash == "SHA-1"):
digest = SHA.new()
else:
digest = MD5.new()
digest.update(message)
return signer.verify(digest, signature)
验证数字签名以及发件人和收件人的详细信息.为安全起见,这会增加更多的权重年龄.
您可以使用以下代码进行RSA密码解密 :
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)
def decrypt(ciphertext, priv_key):
cipher = PKCS1_OAEP.new(priv_key)
return cipher.decrypt(ciphertext)
def sign(message, priv_key, hashAlg = "SHA-256"):
global hash
hash = hashAlg
signer = PKCS1_v1_5.new(priv_key)
if (hash == "SHA-512"):
digest = SHA512.new()
elif (hash == "SHA-384"):
digest = SHA384.new()
elif (hash == "SHA-256"):
digest = SHA256.new()
elif (hash == "SHA-1"):
digest = SHA.new()
else:
digest = MD5.new()
digest.update(message)
return signer.sign(digest)
def verify(message, signature, pub_key):
signer = PKCS1_v1_5.new(pub_key)
if (hash == "SHA-512"):
digest = SHA512.new()
elif (hash == "SHA-384"):
digest = SHA384.new()
elif (hash == "SHA-256"):
digest = SHA256.new()
elif (hash == "SHA-1"):
digest = SHA.new()
else:
digest = MD5.new()
digest.update(message)
return signer.verify(digest, signature)
以上就是python密码学RSA密码解密教程的详细内容,更多关于Python密码学RSA解密的资料请关注编程网其它相关文章!
--结束END--
本文标题: python密码学RSA密码解密教程
本文链接: https://www.lsjlt.com/news/118305.html(转载时请注明来源链接)
有问题或投稿请发送至: 邮箱/279061341@qq.com QQ/279061341
下载Word文档到电脑,方便收藏和打印~
2024-03-01
2024-03-01
2024-03-01
2024-02-29
2024-02-29
2024-02-29
2024-02-29
2024-02-29
2024-02-29
2024-02-29
回答
回答
回答
回答
回答
回答
回答
回答
回答
回答
0