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Simple HTTP client with HTTP/1.1, HTTP/2, and HTTP/3 support

Security advisory: This version has known vulnerabilities. View advisories
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hackney c_src boringssl crypto hpke translate_test_vectors.py
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c_src/boringssl/crypto/hpke/translate_test_vectors.py 

#!/usr/bin/env python3

# coding=utf-8

# Copyright 2020 The BoringSSL Authors

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

#     https://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.



"""This script translates JSON test vectors to BoringSSL's "FileTest" format.



Usage: translate_test_vectors.py TEST_VECTORS_JSON_FILE



The TEST_VECTORS_JSON_FILE is expected to come from the JSON copy of

RFC 9180's test vectors, linked from its [TestVectors] citation.

The output is written to "hpke_test_vectors.txt".

"""



import collections

import json

import sys



HPKE_MODE_BASE = 0

HPKE_MODE_PSK = 1

HPKE_MODE_AUTH = 2

HPKE_DHKEM_P256_SHA256 = 0x0010

HPKE_DHKEM_X25519_SHA256 = 0x0020

HPKE_HKDF_SHA256 = 0x0001

HPKE_AEAD_EXPORT_ONLY = 0xffff





def read_test_vectors_and_generate_code(json_file_in_path, test_file_out_path):

  """Translates JSON test vectors into BoringSSL's FileTest language.



    Args:

      json_file_in_path: Path to the JSON test vectors file.

      test_file_out_path: Path to output file.

  """



  # Load the JSON file into |test_vecs|.

  with open(json_file_in_path) as file_in:

    test_vecs = json.load(file_in)



  lines = []

  for test in test_vecs:

    # Filter out test cases that we don't use.

    if (test["mode"] not in (HPKE_MODE_BASE, HPKE_MODE_AUTH) or

        test["kem_id"] not in (HPKE_DHKEM_X25519_SHA256,

                               HPKE_DHKEM_P256_SHA256) or

        test["aead_id"] == HPKE_AEAD_EXPORT_ONLY or

        test["kdf_id"] != HPKE_HKDF_SHA256):

      continue



    keys = ["mode", "kem_id", "kdf_id", "aead_id", "info", "skRm", "skEm", "pkRm", "pkEm", "ikmE", "ikmR"]



    if test["mode"] == HPKE_MODE_AUTH:

      keys.append("pkSm")

      keys.append("skSm")



    for key in keys:

      lines.append("{} = {}".format(key, str(test[key])))



    for i, enc in enumerate(test["encryptions"]):

      lines.append("# encryptions[{}]".format(i))

      for key in ("aad", "ct", "pt"):

        lines.append("{} = {}".format(key, str(enc[key])))



    for i, exp in enumerate(test["exports"]):

      lines.append("# exports[{}]".format(i))

      for key in ("exporter_context", "L", "exported_value"):

        lines.append("{} = {}".format(key, str(exp[key])))



    lines.append("")



  with open(test_file_out_path, "w") as file_out:

    file_out.write("\n".join(lines))





def main(argv):

  if len(argv) != 2:

    print(__doc__)

    sys.exit(1)



  read_test_vectors_and_generate_code(argv[1], "hpke_test_vectors.txt")





if __name__ == "__main__":

  main(sys.argv)