diff --git a/scripts/generate_psa_constants.py b/scripts/generate_psa_constants.py
index 64b3c9d..4f8b87b 100755
--- a/scripts/generate_psa_constants.py
+++ b/scripts/generate_psa_constants.py
@@ -27,9 +27,10 @@
 # limitations under the License.
 
 import os
-import re
 import sys
 
+from mbedtls_dev import macro_collector
+
 OUTPUT_TEMPLATE = '''\
 /* Automatically generated by generate_psa_constant.py. DO NOT EDIT. */
 
@@ -205,102 +206,7 @@
     }\
 '''
 
-class PSAMacroCollector:
-    """Collect PSA crypto macro definitions from C header files.
-    """
-
-    def __init__(self):
-        self.statuses = set()
-        self.key_types = set()
-        self.key_types_from_curve = {}
-        self.key_types_from_group = {}
-        self.ecc_curves = set()
-        self.dh_groups = set()
-        self.algorithms = set()
-        self.hash_algorithms = set()
-        self.ka_algorithms = set()
-        self.algorithms_from_hash = {}
-        self.key_usages = set()
-
-    # "#define" followed by a macro name with either no parameters
-    # or a single parameter and a non-empty expansion.
-    # Grab the macro name in group 1, the parameter name if any in group 2
-    # and the expansion in group 3.
-    _define_directive_re = re.compile(r'\s*#\s*define\s+(\w+)' +
-                                      r'(?:\s+|\((\w+)\)\s*)' +
-                                      r'(.+)')
-    _deprecated_definition_re = re.compile(r'\s*MBEDTLS_DEPRECATED')
-
-    def read_line(self, line):
-        """Parse a C header line and record the PSA identifier it defines if any.
-        This function analyzes lines that start with "#define PSA_"
-        (up to non-significant whitespace) and skips all non-matching lines.
-        """
-        # pylint: disable=too-many-branches
-        m = re.match(self._define_directive_re, line)
-        if not m:
-            return
-        name, parameter, expansion = m.groups()
-        expansion = re.sub(r'/\*.*?\*/|//.*', r' ', expansion)
-        if re.match(self._deprecated_definition_re, expansion):
-            # Skip deprecated values, which are assumed to be
-            # backward compatibility aliases that share
-            # numerical values with non-deprecated values.
-            return
-        if name.endswith('_FLAG') or name.endswith('MASK'):
-            # Macro only to build actual values
-            return
-        elif (name.startswith('PSA_ERROR_') or name == 'PSA_SUCCESS') \
-           and not parameter:
-            self.statuses.add(name)
-        elif name.startswith('PSA_KEY_TYPE_') and not parameter:
-            self.key_types.add(name)
-        elif name.startswith('PSA_KEY_TYPE_') and parameter == 'curve':
-            self.key_types_from_curve[name] = name[:13] + 'IS_' + name[13:]
-        elif name.startswith('PSA_KEY_TYPE_') and parameter == 'group':
-            self.key_types_from_group[name] = name[:13] + 'IS_' + name[13:]
-        elif name.startswith('PSA_ECC_FAMILY_') and not parameter:
-            self.ecc_curves.add(name)
-        elif name.startswith('PSA_DH_FAMILY_') and not parameter:
-            self.dh_groups.add(name)
-        elif name.startswith('PSA_ALG_') and not parameter:
-            if name in ['PSA_ALG_ECDSA_BASE',
-                        'PSA_ALG_RSA_PKCS1V15_SIGN_BASE']:
-                # Ad hoc skipping of duplicate names for some numerical values
-                return
-            self.algorithms.add(name)
-            # Ad hoc detection of hash algorithms
-            if re.search(r'0x020000[0-9A-Fa-f]{2}', expansion):
-                self.hash_algorithms.add(name)
-            # Ad hoc detection of key agreement algorithms
-            if re.search(r'0x09[0-9A-Fa-f]{2}0000', expansion):
-                self.ka_algorithms.add(name)
-        elif name.startswith('PSA_ALG_') and parameter == 'hash_alg':
-            if name in ['PSA_ALG_DSA', 'PSA_ALG_ECDSA']:
-                # A naming irregularity
-                tester = name[:8] + 'IS_RANDOMIZED_' + name[8:]
-            else:
-                tester = name[:8] + 'IS_' + name[8:]
-            self.algorithms_from_hash[name] = tester
-        elif name.startswith('PSA_KEY_USAGE_') and not parameter:
-            self.key_usages.add(name)
-        else:
-            # Other macro without parameter
-            return
-
-    _nonascii_re = re.compile(rb'[^\x00-\x7f]+')
-    _continued_line_re = re.compile(rb'\\\r?\n\Z')
-    def read_file(self, header_file):
-        for line in header_file:
-            m = re.search(self._continued_line_re, line)
-            while m:
-                cont = next(header_file)
-                line = line[:m.start(0)] + cont
-                m = re.search(self._continued_line_re, line)
-            line = re.sub(self._nonascii_re, rb'', line).decode('ascii')
-            self.read_line(line)
-
-class CaseBuilder(PSAMacroCollector):
+class CaseBuilder(macro_collector.PSAMacroCollector):
     """Collect PSA crypto macro definitions and write value recognition functions.
 
     1. Call `read_file` on the input header file(s).
diff --git a/scripts/mbedtls_dev/macro_collector.py b/scripts/mbedtls_dev/macro_collector.py
new file mode 100644
index 0000000..f6f26f8
--- /dev/null
+++ b/scripts/mbedtls_dev/macro_collector.py
@@ -0,0 +1,114 @@
+"""Collect macro definitions from header files.
+"""
+
+# Copyright The Mbed TLS Contributors
+# SPDX-License-Identifier: Apache-2.0
+#
+# 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
+#
+# http://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.
+
+import re
+
+class PSAMacroCollector:
+    """Collect PSA crypto macro definitions from C header files.
+    """
+
+    def __init__(self):
+        self.statuses = set()
+        self.key_types = set()
+        self.key_types_from_curve = {}
+        self.key_types_from_group = {}
+        self.ecc_curves = set()
+        self.dh_groups = set()
+        self.algorithms = set()
+        self.hash_algorithms = set()
+        self.ka_algorithms = set()
+        self.algorithms_from_hash = {}
+        self.key_usages = set()
+
+    # "#define" followed by a macro name with either no parameters
+    # or a single parameter and a non-empty expansion.
+    # Grab the macro name in group 1, the parameter name if any in group 2
+    # and the expansion in group 3.
+    _define_directive_re = re.compile(r'\s*#\s*define\s+(\w+)' +
+                                      r'(?:\s+|\((\w+)\)\s*)' +
+                                      r'(.+)')
+    _deprecated_definition_re = re.compile(r'\s*MBEDTLS_DEPRECATED')
+
+    def read_line(self, line):
+        """Parse a C header line and record the PSA identifier it defines if any.
+        This function analyzes lines that start with "#define PSA_"
+        (up to non-significant whitespace) and skips all non-matching lines.
+        """
+        # pylint: disable=too-many-branches
+        m = re.match(self._define_directive_re, line)
+        if not m:
+            return
+        name, parameter, expansion = m.groups()
+        expansion = re.sub(r'/\*.*?\*/|//.*', r' ', expansion)
+        if re.match(self._deprecated_definition_re, expansion):
+            # Skip deprecated values, which are assumed to be
+            # backward compatibility aliases that share
+            # numerical values with non-deprecated values.
+            return
+        if name.endswith('_FLAG') or name.endswith('MASK'):
+            # Macro only to build actual values
+            return
+        elif (name.startswith('PSA_ERROR_') or name == 'PSA_SUCCESS') \
+           and not parameter:
+            self.statuses.add(name)
+        elif name.startswith('PSA_KEY_TYPE_') and not parameter:
+            self.key_types.add(name)
+        elif name.startswith('PSA_KEY_TYPE_') and parameter == 'curve':
+            self.key_types_from_curve[name] = name[:13] + 'IS_' + name[13:]
+        elif name.startswith('PSA_KEY_TYPE_') and parameter == 'group':
+            self.key_types_from_group[name] = name[:13] + 'IS_' + name[13:]
+        elif name.startswith('PSA_ECC_FAMILY_') and not parameter:
+            self.ecc_curves.add(name)
+        elif name.startswith('PSA_DH_FAMILY_') and not parameter:
+            self.dh_groups.add(name)
+        elif name.startswith('PSA_ALG_') and not parameter:
+            if name in ['PSA_ALG_ECDSA_BASE',
+                        'PSA_ALG_RSA_PKCS1V15_SIGN_BASE']:
+                # Ad hoc skipping of duplicate names for some numerical values
+                return
+            self.algorithms.add(name)
+            # Ad hoc detection of hash algorithms
+            if re.search(r'0x020000[0-9A-Fa-f]{2}', expansion):
+                self.hash_algorithms.add(name)
+            # Ad hoc detection of key agreement algorithms
+            if re.search(r'0x09[0-9A-Fa-f]{2}0000', expansion):
+                self.ka_algorithms.add(name)
+        elif name.startswith('PSA_ALG_') and parameter == 'hash_alg':
+            if name in ['PSA_ALG_DSA', 'PSA_ALG_ECDSA']:
+                # A naming irregularity
+                tester = name[:8] + 'IS_RANDOMIZED_' + name[8:]
+            else:
+                tester = name[:8] + 'IS_' + name[8:]
+            self.algorithms_from_hash[name] = tester
+        elif name.startswith('PSA_KEY_USAGE_') and not parameter:
+            self.key_usages.add(name)
+        else:
+            # Other macro without parameter
+            return
+
+    _nonascii_re = re.compile(rb'[^\x00-\x7f]+')
+    _continued_line_re = re.compile(rb'\\\r?\n\Z')
+    def read_file(self, header_file):
+        for line in header_file:
+            m = re.search(self._continued_line_re, line)
+            while m:
+                cont = next(header_file)
+                line = line[:m.start(0)] + cont
+                m = re.search(self._continued_line_re, line)
+            line = re.sub(self._nonascii_re, rb'', line).decode('ascii')
+            self.read_line(line)