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

為了更好的安全性，我們將哈希值初始化為SHA-256.我們將使用函數(shù)生成新密鑰或一對公鑰和私鑰.

使用以下代碼.

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)

函數(shù)algorithm

對于加密，在RSA之后使用以下函數(shù)algorithm:

def?encrypt(message,?pub_key):
???cipher?=?PKCS1_OAEP.new(pub_key)
???return?cipher.encrypt(message)

兩個參數(shù)是必需的:消息和 pub_key ，它指的是公鑰.公鑰用于加密，私鑰用于解密.

加密程序的完整代碼

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密碼學(xué)RSA密碼加密教程的詳細(xì)內(nèi)容，更多關(guān)于python密碼學(xué)RSA加密的資料請關(guān)注腳本之家其它相關(guān)文章！

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