Tests for finding out if a token is a compact JWS, json JWS or a JWE. Not the absolute truth but a reasonable assumption.

Author: rohe

src/cryptojwt/utils.py

@@ -1,18 +1,19 @@
 import base64
+from binascii import unhexlify
 import cgi
 import functools
 import importlib
 import json
 import re
 import struct
-import warnings
-from binascii import unhexlify
 from typing import List
+import warnings
 
 from cryptojwt.exception import BadSyntax
 
 DEFAULT_HTTPC_TIMEOUT = 10
 
+
 # ---------------------------------------------------------------------------
 # Helper functions
 
@@ -193,7 +194,7 @@ def split_token(token):
 
 def deser(val):
     """
-    Deserialize from a string representation of an long integer
+    Deserialize from a string representation of a long integer
     to the python representation of a long integer.
 
     :param val: The string representation of the long integer.
@@ -212,12 +213,12 @@ def modsplit(name):
     if ":" in name:
         _part = name.split(":")
         if len(_part) != 2:
-            raise ValueError(f"Syntax error: {s}")
+            raise ValueError(f"Syntax error: {name}")
         return _part[0], _part[1]
 
     _part = name.split(".")
     if len(_part) < 2:
-        raise ValueError(f"Syntax error: {s}")
+        raise ValueError(f"Syntax error: {name}")
 
     return ".".join(_part[:-1]), _part[-1]
 
@@ -271,3 +272,84 @@ def check_content_type(content_type, mime_type):
     """Return True if the content type contains the MIME type"""
     mt, _ = cgi.parse_header(content_type)
     return mime_type == mt
+
+
+def is_compact_jws(token):
+    token = as_bytes(token)
+
+    try:
+        part = split_token(token)
+    except BadSyntax:
+        return False
+
+    # Should be three parts
+    if len(part) != 3:
+        return False
+
+    # All base64 encoded
+    try:
+        part = [b64d(p) for p in part]
+    except Exception:
+        return False
+
+    # header should be a JSON object, 'alg' most be one parameter
+    try:
+        _header = json.loads(part[0])
+    except Exception:
+        return False
+
+    if 'alg' not in _header:
+        return False
+
+    return True
+
+def is_jwe(token):
+    token = as_bytes(token)
+
+    try:
+        part = split_token(token)
+    except BadSyntax:
+        return False
+
+    # Should be five parts
+    if len(part) != 5:
+        return False
+
+    # All base64 encoded
+    try:
+        part = [b64d(p) for p in part]
+    except Exception:
+        return False
+
+    # header should be a JSON object, 'alg' most be one parameter
+    try:
+        _header = json.loads(part[0])
+    except Exception:
+        return False
+
+    if 'alg' not in _header or 'enc' not in _header:
+        return False
+
+    return True
+
+def is_json_jws(token):
+    if isinstance(token, str):
+        try:
+            token = json.loads(token)
+        except Exception:
+            return False
+
+    for arg in ['payload', 'signatures']:
+        if arg not in token:
+            return False
+
+    if not isinstance(token['signatures'], list):
+        return False
+
+    for sign in token['signatures']:
+        if not isinstance(sign, dict):
+            return False
+        if 'signature' not in sign:
+            return False
+
+    return True

tests/test_06_jws.py

@@ -3,10 +3,12 @@
 import json
 import os.path
 
-import pytest
 from cryptography.hazmat.backends import default_backend
 from cryptography.hazmat.primitives.asymmetric import ec
+from jwkest import as_bytes
+import pytest
 
+from cryptojwt import as_unicode
 from cryptojwt.exception import BadSignature
 from cryptojwt.exception import UnknownAlgorithm
 from cryptojwt.exception import WrongNumberOfParts
@@ -18,8 +20,8 @@
 from cryptojwt.jws.exception import NoSuitableSigningKeys
 from cryptojwt.jws.exception import SignerAlgError
 from cryptojwt.jws.jws import JWS
-from cryptojwt.jws.jws import SIGNER_ALGS
 from cryptojwt.jws.jws import JWSig
+from cryptojwt.jws.jws import SIGNER_ALGS
 from cryptojwt.jws.jws import factory
 from cryptojwt.jws.rsa import RSASigner
 from cryptojwt.jws.utils import left_hash
@@ -29,6 +31,8 @@
 from cryptojwt.utils import b64d_enc_dec
 from cryptojwt.utils import b64e
 from cryptojwt.utils import intarr2bin
+from cryptojwt.utils import is_compact_jws
+from cryptojwt.utils import is_json_jws
 
 BASEDIR = os.path.abspath(os.path.dirname(__file__))
 
@@ -130,8 +134,8 @@ def full_path(local_file):
             "kty": "RSA",
             "alg": "RSA256",
             "n": "qYJqXTXsDroPYyQBBmSolK3bJtrSerEm"
-            "-nrmbSpfn8Rz3y3oXLydvUqj8869PkcEzoJIY5Xf7xDN1Co_qyT9qge"
-            "-3C6DEwGVHXOwRoXRGQ_h50Vsh60MB5MIuDN188EeZnQ30dtCTBB9KDTSEA2DunplhwLCq4xphnMNUaeHdEk",
+                 "-nrmbSpfn8Rz3y3oXLydvUqj8869PkcEzoJIY5Xf7xDN1Co_qyT9qge"
+                 "-3C6DEwGVHXOwRoXRGQ_h50Vsh60MB5MIuDN188EeZnQ30dtCTBB9KDTSEA2DunplhwLCq4xphnMNUaeHdEk",
             "kid": "rsa1",
         },
         {
@@ -144,7 +148,8 @@ def full_path(local_file):
 JWKS_b = {
     "keys": [
         {
-            "n": b"zkpUgEgXICI54blf6iWiD2RbMDCOO1jV0VSff1MFFnujM4othfMsad7H1kRo50YM5S_X9TdvrpdOfpz5aBaKFhT6Ziv0nhtcekq1eRl8mjBlvGKCE5XGk-0LFSDwvqgkJoFYInq7bu0a4JEzKs5AyJY75YlGh879k1Uu2Sv3ZZOunfV1O1Orta-NvS-aG_jN5cstVbCGWE20H0vFVrJKNx0Zf-u-aA-syM4uX7wdWgQ-owoEMHge0GmGgzso2lwOYf_4znanLwEuO3p5aabEaFoKNR4K6GjQcjBcYmDEE4CtfRU9AEmhcD1kleiTB9TjPWkgDmT9MXsGxBHf3AKT5w",
+            "n":
+                b"zkpUgEgXICI54blf6iWiD2RbMDCOO1jV0VSff1MFFnujM4othfMsad7H1kRo50YM5S_X9TdvrpdOfpz5aBaKFhT6Ziv0nhtcekq1eRl8mjBlvGKCE5XGk-0LFSDwvqgkJoFYInq7bu0a4JEzKs5AyJY75YlGh879k1Uu2Sv3ZZOunfV1O1Orta-NvS-aG_jN5cstVbCGWE20H0vFVrJKNx0Zf-u-aA-syM4uX7wdWgQ-owoEMHge0GmGgzso2lwOYf_4znanLwEuO3p5aabEaFoKNR4K6GjQcjBcYmDEE4CtfRU9AEmhcD1kleiTB9TjPWkgDmT9MXsGxBHf3AKT5w",
             "e": b"AQAB",
             "kty": "RSA",
             "kid": "rsa1",
@@ -173,7 +178,8 @@ def full_path(local_file):
             "issuer": "https://login.microsoftonline.com/{tenantid}/v2.0/",
             "kid": "kriMPdmBvx68skT8-mPAB3BseeA",
             "kty": "RSA",
-            "n": "kSCWg6q9iYxvJE2NIhSyOiKvqoWCO2GFipgH0sTSAs5FalHQosk9ZNTztX0ywS_AHsBeQPqYygfYVJL6_EgzVuwRk5txr9e3n1uml94fLyq_AXbwo9yAduf4dCHTP8CWR1dnDR-Qnz_4PYlWVEuuHHONOw_blbfdMjhY-C_BYM2E3pRxbohBb3x__CfueV7ddz2LYiH3wjz0QS_7kjPiNCsXcNyKQEOTkbHFi3mu0u13SQwNddhcynd_GTgWN8A-6SN1r4hzpjFKFLbZnBt77ACSiYx-IHK4Mp-NaVEi5wQtSsjQtI--XsokxRDqYLwus1I1SihgbV_STTg5enufuw",
+            "n":
+                "kSCWg6q9iYxvJE2NIhSyOiKvqoWCO2GFipgH0sTSAs5FalHQosk9ZNTztX0ywS_AHsBeQPqYygfYVJL6_EgzVuwRk5txr9e3n1uml94fLyq_AXbwo9yAduf4dCHTP8CWR1dnDR-Qnz_4PYlWVEuuHHONOw_blbfdMjhY-C_BYM2E3pRxbohBb3x__CfueV7ddz2LYiH3wjz0QS_7kjPiNCsXcNyKQEOTkbHFi3mu0u13SQwNddhcynd_GTgWN8A-6SN1r4hzpjFKFLbZnBt77ACSiYx-IHK4Mp-NaVEi5wQtSsjQtI--XsokxRDqYLwus1I1SihgbV_STTg5enufuw",
             "use": "sig",
             "x5c": [
                 "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"
@@ -186,8 +192,8 @@ def full_path(local_file):
             "kid": "MnC_VZcATfM5pOYiJHMba9goEKY",
             "kty": "RSA",
             "n": "vIqz-4-ER_vNWLON9yv8hIYV737JQ6rCl6XfzOC628seYUPf0TaGk91CFxefhzh23V9Tkq"
-            "-RtwN1Vs_z57hO82kkzL-cQHZX3bMJD-GEGOKXCEXURN7VMyZWMAuzQoW9vFb1k3cR1RW_EW_P"
-            "-C8bb2dCGXhBYqPfHyimvz2WarXhntPSbM5XyS5v5yCw5T_Vuwqqsio3V8wooWGMpp61y12NhN8bNVDQAkDPNu2DT9DXB1g0CeFINp_KAS_qQ2Kq6TSvRHJqxRR68RezYtje9KAqwqx4jxlmVAQy0T3-T-IAbsk1wRtWDndhO6s1Os-dck5TzyZ_dNOhfXgelixLUQ",
+                 "-RtwN1Vs_z57hO82kkzL-cQHZX3bMJD-GEGOKXCEXURN7VMyZWMAuzQoW9vFb1k3cR1RW_EW_P"
+                 "-C8bb2dCGXhBYqPfHyimvz2WarXhntPSbM5XyS5v5yCw5T_Vuwqqsio3V8wooWGMpp61y12NhN8bNVDQAkDPNu2DT9DXB1g0CeFINp_KAS_qQ2Kq6TSvRHJqxRR68RezYtje9KAqwqx4jxlmVAQy0T3-T-IAbsk1wRtWDndhO6s1Os-dck5TzyZ_dNOhfXgelixLUQ",
             "use": "sig",
             "x5c": [
                 "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"
@@ -197,12 +203,12 @@ def full_path(local_file):
         {
             "e": "AQAB",
             "issuer": "https://login.microsoftonline.com/9188040d-6c67-4c5b"
-            "-b112-36a304b66dad/v2.0/",
+                      "-b112-36a304b66dad/v2.0/",
             "kid": "GvnPApfWMdLRi8PDmisFn7bprKg",
             "kty": "RSA",
             "n": "5ymq_xwmst1nstPr8YFOTyD1J5N4idYmrph7AyAv95RbWXfDRqy8CMRG7sJq"
-            "-UWOKVOA4MVrd_NdV-ejj1DE5MPSiG"
-            "-mZK_5iqRCDFvPYqOyRj539xaTlARNY4jeXZ0N6irZYKqSfYACjkkKxbLKcijSu1pJ48thXOTED0oNa6U",
+                 "-UWOKVOA4MVrd_NdV-ejj1DE5MPSiG"
+                 "-mZK_5iqRCDFvPYqOyRj539xaTlARNY4jeXZ0N6irZYKqSfYACjkkKxbLKcijSu1pJ48thXOTED0oNa6U",
             "use": "sig",
             "x5c": [
                 "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"
@@ -212,10 +218,11 @@ def full_path(local_file):
         {
             "e": "AQAB",
             "issuer": "https://login.microsoftonline.com/9188040d-6c67-4c5b"
-            "-b112-36a304b66dad/v2.0/",
+                      "-b112-36a304b66dad/v2.0/",
             "kid": "dEtpjbEvbhfgwUI-bdK5xAU_9UQ",
             "kty": "RSA",
-            "n": "x7HNcD9ZxTFRaAgZ7-gdYLkgQua3zvQseqBJIt8Uq3MimInMZoE9QGQeSML7qZPlowb5BUakdLI70ayM4vN36--0ht8-oCHhl8YjGFQkU-Iv2yahWHEP-1EK6eOEYu6INQP9Lk0HMk3QViLwshwb-KXVD02jdmX2HNdYJdPyc0c",
+            "n":
+                "x7HNcD9ZxTFRaAgZ7-gdYLkgQua3zvQseqBJIt8Uq3MimInMZoE9QGQeSML7qZPlowb5BUakdLI70ayM4vN36--0ht8-oCHhl8YjGFQkU-Iv2yahWHEP-1EK6eOEYu6INQP9Lk0HMk3QViLwshwb-KXVD02jdmX2HNdYJdPyc0c",
             "use": "sig",
             "x5c": [
                 "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"
@@ -232,11 +239,11 @@ def full_path(local_file):
             "kid": "R3NJRW1EVHRsaUcwSXVydi14cVVoTmxhaU4zckU1MlFPa05NWGNpUUZtcw",
             "kty": "RSA",
             "n": "rp7aJD9FKKHQgLTeXLMyjB5TS51x_KqA15gBJHF2Ps-rrmcBujpMAi39D7w4"
-            "SArr9X7DPgHekTPRV6-i46TyqnY1EXPGRb0nCg0rCmkyOAMysXhhuexu3vS7"
-            "Fa2YPvX2zpl5svdkOOwLmHBplCTtvScz-L7N1xeknauOLF5Ct39C5Ipv-BWx"
-            "bNrqD68uIPSOH9ZsoGKVArSI0MSmw5LB7B3i30D8FvmlJyxcEPZOFVahFCmS"
-            "qqUXHuXV2Z0BpvgvDhzB5cSNO12clwD_fZ4CnbvuvfbBAgpVg774smz2z3ov"
-            "6SsZ6ZD5Tc_9gE2ryLW6x0RS1y2KSME8EUI2sdJYZw",
+                 "SArr9X7DPgHekTPRV6-i46TyqnY1EXPGRb0nCg0rCmkyOAMysXhhuexu3vS7"
+                 "Fa2YPvX2zpl5svdkOOwLmHBplCTtvScz-L7N1xeknauOLF5Ct39C5Ipv-BWx"
+                 "bNrqD68uIPSOH9ZsoGKVArSI0MSmw5LB7B3i30D8FvmlJyxcEPZOFVahFCmS"
+                 "qqUXHuXV2Z0BpvgvDhzB5cSNO12clwD_fZ4CnbvuvfbBAgpVg774smz2z3ov"
+                 "6SsZ6ZD5Tc_9gE2ryLW6x0RS1y2KSME8EUI2sdJYZw",
             "x5c": [
                 "MIIDOjCCAiKgAwIBAgIUJACZrVNr3gHJrde3OkQwy1lXL6owDQYJKoZIhvcN"
                 "AQELBQAwSjELMAkGA1UEBhMCU0UxDjAMBgNVBAcMBVVtZcOlMRgwFgYDVQQK"
@@ -266,11 +273,11 @@ def full_path(local_file):
             "kid": "d1Z6RTJHQmh0NnBaeHpfYVd0U1dIb25fUTQ1aVhjNXFhWHEyTE4wbVh5bw",
             "kty": "RSA",
             "n": "zpQAmVzABLrRWV6HiBVbFeho_KhQhm8T_r6LvGP-Znnewpr6J7lBYD9gfVJo2_"
-            "lOpCqitJvoMJoZxoULJ1xU_Am4padc-as8Sk9vb3FkvxoDrZFByNgmbrNTJCco"
-            "wUBLTgb1wWde1CPNmr_U_-VBODOy17uTrt7DNEMqEwUi3Qb76J8duHVQT0ECcw"
-            "crGXbsfV74jSaBAehHxlTt4tG4-LVC9I0IFs9bBykdZVh59uwtaKTlBNuC5frt"
-            "kGyn_2TM1zCWSVparxqQ_T3e_g2NOr3v5fW_gjDsYZ2543DrE8ta_OCyrqw4wz"
-            "fBEOb6raI6wCyqFQ5My1bz-qVTap-4hQ",
+                 "lOpCqitJvoMJoZxoULJ1xU_Am4padc-as8Sk9vb3FkvxoDrZFByNgmbrNTJCco"
+                 "wUBLTgb1wWde1CPNmr_U_-VBODOy17uTrt7DNEMqEwUi3Qb76J8duHVQT0ECcw"
+                 "crGXbsfV74jSaBAehHxlTt4tG4-LVC9I0IFs9bBykdZVh59uwtaKTlBNuC5frt"
+                 "kGyn_2TM1zCWSVparxqQ_T3e_g2NOr3v5fW_gjDsYZ2543DrE8ta_OCyrqw4wz"
+                 "fBEOb6raI6wCyqFQ5My1bz-qVTap-4hQ",
             "x5c": [
                 "MIIDPjCCAiagAwIBAgIUB70yEjwKX+/dUw4YvP61BKpDHJQwDQYJKoZIhvcNAQ"
                 "ELBQAwTDELMAkGA1UEBhMCVVMxEDAOBgNVBAcMB1NlYXR0bGUxGDAWBgNVBAoM"
@@ -297,7 +304,6 @@ def full_path(local_file):
     ]
 }
 
-
 SIGJWKS = KeyBundle(JWKS_b)
 
 
@@ -621,12 +627,12 @@ def test_sign_2():
                 "alg": "RS512",
                 "kty": "RSA",
                 "d": "ckLyXxkbjC4szg8q8G0ERBZV"
-                "-9CszeOxpRtx1KM9BLl0Do3li_Km2vvFvfXJ7MxQpiZ18pBoCcyYQEU262ym8wI22JWMPrZe24HCNxLxqzr_JEuBhpKFxQF6EFTSvJEJD1FkoTuCTvN0zD7YHGaJQG6JzVEuFUY3ewxjH0FYNa_ppTnPP3LC-T9u_GX9Yqyuw1KOYoHSzhWSWQOeAgs4dH9-iAxN1wdZ6eH1jFWAs43svk_rhwdgyJMlihFtV9MAInBlfi_Zu8wRVhVl5urkJrLf0tGFnMbnzb6dYSlUXxEYClpY12W7kXW9aePDqkCwI4oZyxmOmgq4hunKGR1dAQ",
+                     "-9CszeOxpRtx1KM9BLl0Do3li_Km2vvFvfXJ7MxQpiZ18pBoCcyYQEU262ym8wI22JWMPrZe24HCNxLxqzr_JEuBhpKFxQF6EFTSvJEJD1FkoTuCTvN0zD7YHGaJQG6JzVEuFUY3ewxjH0FYNa_ppTnPP3LC-T9u_GX9Yqyuw1KOYoHSzhWSWQOeAgs4dH9-iAxN1wdZ6eH1jFWAs43svk_rhwdgyJMlihFtV9MAInBlfi_Zu8wRVhVl5urkJrLf0tGFnMbnzb6dYSlUXxEYClpY12W7kXW9aePDqkCwI4oZyxmOmgq4hunKGR1dAQ",
                 "e": "AQAB",
                 "use": "sig",
                 "kid": "af22448d-4c7b-464d-b63a-f5bd90f6d7d1",
                 "n": "o9g8DpUwBW6B1qmcm-TfEh4rNX7n1t38jdo4Gkl_cI3q"
-                "--7n0Blg0kN88LHZvyZjUB2NhBdFYNxMP8ucy0dOXvWGWzaPmGnq3DM__lN8P4WjD1cCTAVEYKawNBAmGKqrFj1SgpPNsSqiqK-ALM1w6mZ-QGimjOgwCyJy3l9lzZh5D8tKnS2t1pZgE0X5P7lZQWHYpHPqp4jKhETzrCpPGfv0Rl6nmmjp7NlRYBkWKf_HEKE333J6M039m2FbKgxrBg3zmYYpmHuMzVgxxb8LSiv5aqyeyJjxM-YDUAgNQBfKNhONqXyu9DqtSprNkw6sqmuxK0QUVrNYl3b03PgS5Q",
+                     "--7n0Blg0kN88LHZvyZjUB2NhBdFYNxMP8ucy0dOXvWGWzaPmGnq3DM__lN8P4WjD1cCTAVEYKawNBAmGKqrFj1SgpPNsSqiqK-ALM1w6mZ-QGimjOgwCyJy3l9lzZh5D8tKnS2t1pZgE0X5P7lZQWHYpHPqp4jKhETzrCpPGfv0Rl6nmmjp7NlRYBkWKf_HEKE333J6M039m2FbKgxrBg3zmYYpmHuMzVgxxb8LSiv5aqyeyJjxM-YDUAgNQBfKNhONqXyu9DqtSprNkw6sqmuxK0QUVrNYl3b03PgS5Q",
             }
         ]
     }
@@ -1020,3 +1026,50 @@ def test_verify_json_missing_key():
 
     # With both
     assert JWS().verify_json(_jwt, keys=[vkeys[0], sym_key])
+
+
+def test_is_compact_jws():
+    _header = {"foo": "bar", "alg": "HS384"}
+    _payload = "hello world"
+    _sym_key = SYMKey(key=b"My hollow echo chamber", alg="HS384")
+
+    _jwt = JWS(msg=_payload, alg='HS384').sign_compact(keys=[_sym_key])
+
+    assert is_compact_jws(_jwt)
+
+    # Faulty examples
+
+    # to few parts
+    assert is_compact_jws('abc.def') is False
+
+    # right number of parts but not base64
+
+    assert is_compact_jws('abc.def.ghi') is False
+
+    # not base64 illegal characters
+    assert is_compact_jws('abc.::::.ghi') is False
+
+    # Faulty header
+    _faulty_header = {'foo': 'bar'}  # alg is a MUST
+    _jwt = ".".join([as_unicode(b64e(as_bytes(json.dumps(_faulty_header)))), 'def', 'ghi'])
+    assert is_compact_jws(_jwt) is False
+
+
+def test_is_json_jws():
+    ec_key = ECKey().load_key(P256())
+    sym_key = SYMKey(key=b"My hollow echo chamber", alg="HS384")
+
+    protected_headers_1 = {"foo": "bar", "alg": "ES256"}
+    unprotected_headers_1 = {"abc": "xyz"}
+    protected_headers_2 = {"foo": "bar", "alg": "HS384"}
+    unprotected_headers_2 = {"abc": "zeb"}
+    payload = "hello world"
+    _jwt = JWS(msg=payload).sign_json(
+        headers=[
+            (protected_headers_1, unprotected_headers_1),
+            (protected_headers_2, unprotected_headers_2),
+        ],
+        keys=[ec_key, sym_key],
+    )
+
+    assert is_json_jws(_jwt)

tests/test_07_jwe.py

@@ -37,6 +37,8 @@
 
 __author__ = "rohe0002"
 
+from cryptojwt.utils import is_jwe
+
 
 def rndstr(size=16):
     """
@@ -717,3 +719,9 @@ def test_fernet_blake2s():
     decrypter = encrypter
     resp = decrypter.decrypt(_token)
     assert resp == plain
+
+def test_is_jwe():
+    encryption_key = SYMKey(use="enc", key="DukeofHazardpass", kid="some-key-id")
+    jwe = JWE(plain, alg="A128KW", enc="A128CBC-HS256")
+    _jwe = jwe.encrypt(keys=[encryption_key], kid="some-key-id")
+    assert is_jwe(_jwe)