RSA 私钥和公钥的最大长度是多少

RSA加密算法：私钥和公钥的最大长度

python
from cryptography.hazmat.backends import default_backend
from cryptography.hazmat.primitives.asymmetric import rsa
from cryptography.hazmat.primitives import serialization
# 生成2048位RSA密钥对
private_key = rsa.generate_private_key(
    public_exponent=65537,
    key_size=2048,
    backend=default_backend()
)
# 获取公钥
public_key = private_key.public_key()
# 将私钥以PEM格式保存到文件
with open('private_key.pem', 'wb') as f:
    f.write(private_key.private_bytes(
        encoding=serialization.Encoding.PEM,
        format=serialization.PrivateFormat.PKCS8,
        encryption_algorithm=serialization.NoEncryption()
    ))
# 将公钥以PEM格式保存到文件
with open('public_key.pem', 'wb') as f:
    f.write(public_key.public_bytes(
        encoding=serialization.Encoding.PEM,
        format=serialization.PublicFormat.SubjectPublicKeyInfo
    ))