rsa加密算法python实现

可以使用Python自带的Cryptography库来实现RSA加密算法，代码如下：

from cryptography.hazmat.primitives.asymmetric import rsa, padding
from cryptography.hazmat.primitives import serialization, hashes

# 生成密钥对
private_key = rsa.generate_private_key(
    public_exponent=65537, key_size=2048)
public_key = private_key.public_key()

# 将密钥对序列化为PEM格式
private_pem = private_key.private_bytes(serialization.Encoding.PEM,
                                        serialization.PrivateFormat.PKCS8,
                                        serialization.NoEncryption())
public_pem = public_key.public_bytes(serialization.Encoding.PEM,
                                     serialization.PublicFormat.SubjectPublicKeyInfo)

# 加密和解密
message = b"Hello, world!"
cipher_text = public_key.encrypt(
    message, padding.OAEP(mgf=padding.MGF1(algorithm=hashes.SHA256()),
                        algorithm=hashes.SHA256(), label=None))
plain_text = private_key.decrypt(
    cipher_text, padding.OAEP(mgf=padding.MGF1(algorithm=hashes.SHA256()),
                            algorithm=hashes.SHA256(), label=None))

希望这能够帮助你。请问还有其他问题吗？