Squashed 'lib/mbedtls/external/mbedtls/' content from commit 2ca6c285a0dd

git-subtree-dir: lib/mbedtls/external/mbedtls
git-subtree-split: 2ca6c285a0dd3f33982dd57299012dacab1ff206

1 files changed, 180 insertions, 0 deletions

diff --git a/tests/scripts/translate_ciphers.py b/tests/scripts/translate_ciphers.py
new file mode 100755
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+++ b/tests/scripts/translate_ciphers.py
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+#!/usr/bin/env python3
+
+# translate_ciphers.py
+#
+# Copyright The Mbed TLS Contributors
+# SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+
+"""
+Translate standard ciphersuite names to GnuTLS, OpenSSL and Mbed TLS standards.
+
+To test the translation functions run:
+python3 -m unittest translate_cipher.py
+"""
+
+import re
+import argparse
+import unittest
+
+class TestTranslateCiphers(unittest.TestCase):
+    """
+    Ensure translate_ciphers.py translates and formats ciphersuite names
+    correctly
+    """
+    def test_translate_all_cipher_names(self):
+        """
+        Translate standard ciphersuite names to GnuTLS, OpenSSL and
+        Mbed TLS counterpart. Use only a small subset of ciphers
+        that exercise each step of the translation functions
+        """
+        ciphers = [
+            ("TLS_ECDHE_ECDSA_WITH_NULL_SHA",
+             "+ECDHE-ECDSA:+NULL:+SHA1",
+             "ECDHE-ECDSA-NULL-SHA",
+             "TLS-ECDHE-ECDSA-WITH-NULL-SHA"),
+            ("TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256",
+             "+ECDHE-ECDSA:+AES-128-GCM:+AEAD",
+             "ECDHE-ECDSA-AES128-GCM-SHA256",
+             "TLS-ECDHE-ECDSA-WITH-AES-128-GCM-SHA256"),
+            ("TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA",
+             "+DHE-RSA:+3DES-CBC:+SHA1",
+             "EDH-RSA-DES-CBC3-SHA",
+             "TLS-DHE-RSA-WITH-3DES-EDE-CBC-SHA"),
+            ("TLS_RSA_WITH_AES_256_CBC_SHA",
+             "+RSA:+AES-256-CBC:+SHA1",
+             "AES256-SHA",
+             "TLS-RSA-WITH-AES-256-CBC-SHA"),
+            ("TLS_PSK_WITH_3DES_EDE_CBC_SHA",
+             "+PSK:+3DES-CBC:+SHA1",
+             "PSK-3DES-EDE-CBC-SHA",
+             "TLS-PSK-WITH-3DES-EDE-CBC-SHA"),
+            ("TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256",
+             None,
+             "ECDHE-ECDSA-CHACHA20-POLY1305",
+             "TLS-ECDHE-ECDSA-WITH-CHACHA20-POLY1305-SHA256"),
+            ("TLS_ECDHE_ECDSA_WITH_AES_128_CCM",
+             "+ECDHE-ECDSA:+AES-128-CCM:+AEAD",
+             None,
+             "TLS-ECDHE-ECDSA-WITH-AES-128-CCM"),
+            ("TLS_ECDHE_RSA_WITH_ARIA_256_GCM_SHA384",
+             None,
+             "ECDHE-ARIA256-GCM-SHA384",
+             "TLS-ECDHE-RSA-WITH-ARIA-256-GCM-SHA384"),
+        ]
+
+        for s, g_exp, o_exp, m_exp in ciphers:
+
+            if g_exp is not None:
+                g = translate_gnutls(s)
+                self.assertEqual(g, g_exp)
+
+            if o_exp is not None:
+                o = translate_ossl(s)
+                self.assertEqual(o, o_exp)
+
+            if m_exp is not None:
+                m = translate_mbedtls(s)
+                self.assertEqual(m, m_exp)
+
+def translate_gnutls(s_cipher):
+    """
+    Translate s_cipher from standard ciphersuite naming convention
+    and return the GnuTLS naming convention
+    """
+
+    # Replace "_" with "-" to handle ciphersuite names based on Mbed TLS
+    # naming convention
+    s_cipher = s_cipher.replace("_", "-")
+
+    s_cipher = re.sub(r'\ATLS-', '+', s_cipher)
+    s_cipher = s_cipher.replace("-WITH-", ":+")
+    s_cipher = s_cipher.replace("-EDE", "")
+
+    # SHA in Mbed TLS == SHA1 GnuTLS,
+    # if the last 3 chars are SHA append 1
+    if s_cipher[-3:] == "SHA":
+        s_cipher = s_cipher+"1"
+
+    # CCM or CCM-8 should be followed by ":+AEAD"
+    # Replace "GCM:+SHAxyz" with "GCM:+AEAD"
+    if "CCM" in s_cipher or "GCM" in s_cipher:
+        s_cipher = re.sub(r"GCM-SHA\d\d\d", "GCM", s_cipher)
+        s_cipher = s_cipher+":+AEAD"
+
+    # Replace the last "-" with ":+"
+    else:
+        index = s_cipher.rindex("-")
+        s_cipher = s_cipher[:index] + ":+" + s_cipher[index+1:]
+
+    return s_cipher
+
+def translate_ossl(s_cipher):
+    """
+    Translate s_cipher from standard ciphersuite naming convention
+    and return the OpenSSL naming convention
+    """
+
+    # Replace "_" with "-" to handle ciphersuite names based on Mbed TLS
+    # naming convention
+    s_cipher = s_cipher.replace("_", "-")
+
+    s_cipher = re.sub(r'^TLS-', '', s_cipher)
+    s_cipher = s_cipher.replace("-WITH", "")
+
+    # Remove the "-" from "ABC-xyz"
+    s_cipher = s_cipher.replace("AES-", "AES")
+    s_cipher = s_cipher.replace("CAMELLIA-", "CAMELLIA")
+    s_cipher = s_cipher.replace("ARIA-", "ARIA")
+
+    # Remove "RSA" if it is at the beginning
+    s_cipher = re.sub(r'^RSA-', r'', s_cipher)
+
+    # For all circumstances outside of PSK
+    if "PSK" not in s_cipher:
+        s_cipher = s_cipher.replace("-EDE", "")
+        s_cipher = s_cipher.replace("3DES-CBC", "DES-CBC3")
+
+        # Remove "CBC" if it is not prefixed by DES
+        s_cipher = re.sub(r'(?<!DES-)CBC-', r'', s_cipher)
+
+    # ECDHE-RSA-ARIA does not exist in OpenSSL
+    s_cipher = s_cipher.replace("ECDHE-RSA-ARIA", "ECDHE-ARIA")
+
+    # POLY1305 should not be followed by anything
+    if "POLY1305" in s_cipher:
+        index = s_cipher.rindex("POLY1305")
+        s_cipher = s_cipher[:index+8]
+
+    # If DES is being used, Replace DHE with EDH
+    if "DES" in s_cipher and "DHE" in s_cipher and "ECDHE" not in s_cipher:
+        s_cipher = s_cipher.replace("DHE", "EDH")
+
+    return s_cipher
+
+def translate_mbedtls(s_cipher):
+    """
+    Translate s_cipher from standard ciphersuite naming convention
+    and return Mbed TLS ciphersuite naming convention
+    """
+
+    # Replace "_" with "-"
+    s_cipher = s_cipher.replace("_", "-")
+
+    return s_cipher
+
+def format_ciphersuite_names(mode, names):
+    t = {"g": translate_gnutls,
+         "o": translate_ossl,
+         "m": translate_mbedtls
+        }[mode]
+    return " ".join(c + '=' + t(c) for c in names)
+
+def main(target, names):
+    print(format_ciphersuite_names(target, names))
+
+if __name__ == "__main__":
+    PARSER = argparse.ArgumentParser()
+    PARSER.add_argument('target', metavar='TARGET', choices=['o', 'g', 'm'])
+    PARSER.add_argument('names', metavar='NAMES', nargs='+')
+    ARGS = PARSER.parse_args()
+    main(ARGS.target, ARGS.names)