Python实现RSA签名，验签

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)