如何将ECDH密钥对的原始表示形式转换为JSON Web密钥？

import json
from cryptography.hazmat.primitives.asymmetric import ec
from cryptography.hazmat.primitives.serialization import Encoding, PublicFormat

# 生成ECDH密钥对
private_key = ec.generate_private_key(ec.SECP256R1())
public_key = private_key.public_key()

# 提取公钥的坐标
public_key_bytes = public_key.public_bytes(Encoding.X962, PublicFormat.CompressedPoint)
x = int.from_bytes(public_key_bytes[1:17], 'big')
y = int.from_bytes(public_key_bytes[17:33], 'big')

# 构建JWK对象
jwk = {
    "kty": "EC",
    "crv": "P-256",
    "x": x.to_bytes(32, 'big').hex(),
    "y": y.to_bytes(32, 'big').hex()
}

# 将JWK对象转换为JSON字符串
jwk_json = json.dumps(jwk, indent=4)
print(jwk_json)