first commit

2026-09-14 23:22:10 +09:00
commit 9f9c8fb69b
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+import typing as t
+from .._rfc7638 import calculate_thumbprint
+
+JWK_THUMBPRINT_URN = "urn:ietf:params:oauth:jwk-thumbprint"
+
+
+def calculate_thumbprint_uri(
+    value: dict[str, t.Any],
+    digest_method: t.Literal["sha256", "sha384", "sha512"] = "sha256",
+) -> str:
+    """Calculate JWK thumbprint URI, defined by RFC9278.
+
+    .. code-block:: python
+
+        from joserfc import jwk
+
+        jwk.thumbprint({
+            'kty': 'oct',
+            'k': 'sTBpI_oCHSyW-n0exSwhzNHwU9FGRioPauxWA84bnRU',
+        })
+        # 'urn:ietf:params:oauth:jwk-thumbprint:sha-256:DCdRGGDKvhAJgmVlCp6tosc2T9ELtd30S_15vn8bhrI'
+    """
+    thumbprint = calculate_thumbprint(value, digest_method=digest_method)
+    return concat_thumbprint_uri(thumbprint, digest_method=digest_method)
+
+
+def concat_thumbprint_uri(value: str, digest_method: t.Literal["sha256", "sha384", "sha512"]) -> str:
+    method = digest_method.replace("sha", "sha-")
+    return f"{JWK_THUMBPRINT_URN}:{method}:{value}"