rsa

rsa加解密

import rsa
 
 
# rsa加密
def rsaEncrypt(str):
    # 生成公钥、私钥
    (pubkey, privkey) = rsa.newkeys(512)
    print("公钥:
%s
私钥:
:%s" % (pubkey, privkey))
    # 明文编码格式
    content = str.encode("utf-8")
    # 公钥加密
    crypto = rsa.encrypt(content, pubkey)
    return (crypto, privkey)
 
 
# rsa解密
def rsaDecrypt(str, pk):
    # 私钥解密
    content = rsa.decrypt(str, pk)
    con = content.decode("utf-8")
    return con
 
 
if __name__ == "__main__":
 
    str, pk = rsaEncrypt("hello")
    print("加密后密文：
%s" % str)
    content = rsaDecrypt(str, pk)
    print("解密后明文：
%s" % content)

rsa生成和保存公私钥

import rsa
 
f, e = rsa.newkeys(2048)    # 生成公钥、私钥
 
e = e.save_pkcs1()  # 保存为 .pem 格式
with open("e.pem", "wb") as x:  # 保存私钥
    x.write(e)
f = f.save_pkcs1()  # 保存为 .pem 格式
with open("f.pem", "wb") as x:  # 保存公钥
    x.write(f)
 

使用 Crypto.PublicKey.RSA 生成公钥、私钥

import Crypto.PublicKey.RSA
import Crypto.Random
 
x = Crypto.PublicKey.RSA.generate(2048)
a = x.exportKey("PEM")  # 生成私钥
b = x.publickey().exportKey()   # 生成公钥
with open("a.pem", "wb") as x:
    x.write(a)
with open("b.pem", "wb") as x:
    x.write(b)
 
y = Crypto.PublicKey.RSA.generate(2048, Crypto.Random.new().read)   # 使用 Crypto.Random.new().read 伪随机数生成器
c = y.exportKey()   # 生成私钥
d = y.publickey().exportKey()   #生成公钥
with open("c.pem", "wb") as x:
    x.write(c)
with open("d.pem", "wb") as x:
    x.write(d)