Python下RSA加密/解密， 签名/验证

原文出处：https://www.cnblogs.com/renfanzi/p/6062261.html

import rsa

生成密钥

(pubkey, privkey) = rsa.newkeys(1024)

保存密钥

with open(‘public.pem’,‘w+’) as f:
f.write(pubkey.save_pkcs1().decode())

with open(‘private.pem’,‘w+’) as f:
f.write(privkey.save_pkcs1().decode())

导入密钥

with open(‘public.pem’,‘r’) as f:
pubkey = rsa.PublicKey.load_pkcs1(f.read().encode())

with open(‘private.pem’,‘r’) as f:
privkey = rsa.PrivateKey.load_pkcs1(f.read().encode())

明文

message = ‘hello’

公钥加密

crypto = rsa.encrypt(message.encode(), pubkey)

私钥解密

message = rsa.decrypt(crypto, privkey).decode()
print(message)

私钥签名

signature = rsa.sign(message.encode(), privkey, ‘SHA-1’)

公钥验证

rsa.verify(message.encode(), signature, pubkey)