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api_jwk.py

from __future__ import annotations

import json
import time
from typing import Any

from .algorithms import get_default_algorithms, has_crypto, requires_cryptography
from .exceptions import InvalidKeyError, PyJWKError, PyJWKSetError, PyJWTError
from .types import JWKDict

class PyJWK:
    def __init__(self, jwk_data: JWKDict, algorithm: str | None = None) -> None:
        self._algorithms = get_default_algorithms()
        self._jwk_data = jwk_data

kty = self._jwk_data.get("kty", None)
        if not kty:
            raise InvalidKeyError(f"kty is not found: {self._jwk_data}")

if not algorithm and isinstance(self._jwk_data, dict):
            algorithm = self._jwk_data.get("alg", None)

if not algorithm:
            # Determine alg with kty (and crv).
            crv = self._jwk_data.get("crv", None)
            if kty == "EC":
                if crv == "P-256" or not crv:
                    algorithm = "ES256"
                elif crv == "P-384":
                    algorithm = "ES384"
                elif crv == "P-521":
                    algorithm = "ES512"
                elif crv == "secp256k1":
                    algorithm = "ES256K"
                else:
                    raise InvalidKeyError(f"Unsupported crv: {crv}")
            elif kty == "RSA":
                algorithm = "RS256"
            elif kty == "oct":
                algorithm = "HS256"
            elif kty == "OKP":
                if not crv:
                    raise InvalidKeyError(f"crv is not found: {self._jwk_data}")
                if crv == "Ed25519":
                    algorithm = "EdDSA"
                else:
                    raise InvalidKeyError(f"Unsupported crv: {crv}")
            else:
                raise InvalidKeyError(f"Unsupported kty: {kty}")

if not has_crypto and algorithm in requires_cryptography:
            raise PyJWKError(f"{algorithm} requires 'cryptography' to be installed.")

self.Algorithm = self._algorithms.get(algorithm)

if not self.Algorithm:
            raise PyJWKError(f"Unable to find an algorithm for key: {self._jwk_data}")

self.key = self.Algorithm.from_jwk(self._jwk_data)

@staticmethod
    def from_dict(obj: JWKDict, algorithm: str | None = None) -> "PyJWK":
        return PyJWK(obj, algorithm)

@staticmethod
    def from_json(data: str, algorithm: None = None) -> "PyJWK":
        obj = json.loads(data)
        return PyJWK.from_dict(obj, algorithm)

@property
    def key_type(self) -> str | None:
        return self._jwk_data.get("kty", None)

@property
    def key_id(self) -> str | None:
        return self._jwk_data.get("kid", None)

@property
    def public_key_use(self) -> str | None:
        return self._jwk_data.get("use", None)

class PyJWKSet:
    def __init__(self, keys: list[JWKDict]) -> None:
        self.keys = []

if not keys:
            raise PyJWKSetError("The JWK Set did not contain any keys")

if not isinstance(keys, list):
            raise PyJWKSetError("Invalid JWK Set value")

for key in keys:
            try:
                self.keys.append(PyJWK(key))
            except PyJWTError:
                # skip unusable keys
                continue

if len(self.keys) == 0:
            raise PyJWKSetError(
                "The JWK Set did not contain any usable keys. Perhaps 'cryptography' is not installed?"
            )

@staticmethod
    def from_dict(obj: dict[str, Any]) -> "PyJWKSet":
        keys = obj.get("keys", [])
        return PyJWKSet(keys)

@staticmethod
    def from_json(data: str) -> "PyJWKSet":
        obj = json.loads(data)
        return PyJWKSet.from_dict(obj)

def __getitem__(self, kid: str) -> "PyJWK":
        for key in self.keys:
            if key.key_id == kid:
                return key
        raise KeyError(f"keyset has no key for kid: {kid}")

class PyJWTSetWithTimestamp:
    def __init__(self, jwk_set: PyJWKSet):
        self.jwk_set = jwk_set
        self.timestamp = time.monotonic()

def get_jwk_set(self) -> PyJWKSet:
        return self.jwk_set

def get_timestamp(self) -> float:
        return self.timestamp

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	0755	2026-02-06 10:01:01
..	dir	-	root/root	0755	2026-05-04 07:16:41
__pycache__	dir	-	root/root	0755	2026-02-06 10:01:01
__init__.py	file	1.63 KB	root/root	0644	2026-01-20 01:01:47
algorithms.py	file	29.1 KB	root/root	0644	2026-01-20 01:01:47
api_jwk.py	file	4.1 KB	root/root	0644	2026-01-20 01:01:47
api_jws.py	file	10.84 KB	root/root	0644	2026-01-20 01:01:47
api_jwt.py	file	12.34 KB	root/root	0644	2026-01-20 01:01:47
exceptions.py	file	1.02 KB	root/root	0644	2026-01-20 01:01:47
help.py	file	1.71 KB	root/root	0644	2026-01-20 01:01:47
jwk_set_cache.py	file	959 B	root/root	0644	2026-01-20 01:01:47
jwks_client.py	file	4.12 KB	root/root	0644	2026-01-20 01:01:47
py.typed	file	0 B	root/root	0644	2026-01-20 01:01:47
types.py	file	99 B	root/root	0644	2026-01-20 01:01:47
utils.py	file	3.81 KB	root/root	0644	2026-01-20 01:01:47
warnings.py	file	59 B	root/root	0644	2026-01-20 01:01:47

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