slhdsa: add Python script to convert NIST ACVP data to evp_test format

Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/26750)

diff --git a/test/slhdsa_parse.py b/test/slhdsa_parse.py
new file mode 100755 (executable)
index 0000000..82ecb1d
--- /dev/null
+++ b/test/slhdsa_parse.py
@@ -0,0 +1,149 @@
+#!/usr/bin/env python3
+#
+# Copyright 2025 The OpenSSL Project Authors. All Rights Reserved.
+#
+# Licensed under the Apache License 2.0 (the "License").  You may not use
+# this file except in compliance with the License.  You can obtain a copy
+# in the file LICENSE in the source distribution or at
+# https://www.openssl.org/source/license.html
+
+# A python program written to parse (version 42) of the ACVP test vectors for
+# SLH_DSA. The 3 files that can be processed by this utility can be downloaded
+# from
+#  https://github.com/usnistgov/ACVP-Server/blob/master/gen-val/json-files/SLH-DSA-keyGen-FIPS204/internalProjection.json
+#  https://github.com/usnistgov/ACVP-Server/blob/master/gen-val/json-files/SLH-DSA-sigGen-FIPS204/internalProjection.json
+#  https://github.com/usnistgov/ACVP-Server/blob/master/gen-val/json-files/SLH-DSA-sigVer-FIPS204/internalProjection.json
+# and output from this utility to
+#  test/recipes/30-test_evp_data/evppkey_slh_dsa_keygen.txt
+#  test/recipes/30-test_evp_data/evppkey_slh_dsa_siggen.txt
+#  test/recipes/30-test_evp_data/evppkey_slh_dsa_sigver.txt
+#
+# e.g. python3 slhdsa_parse.py ~/Downloads/keygen.json > ./test/recipes/30-test_evp_data/evppkey_slh_dsa_keygen.txt
+#
+import json
+import argparse
+import datetime
+import re
+import sys
+
+def eprint(*args, **kwargs):
+    print(*args, file=sys.stderr, **kwargs)
+
+def print_label(label, value):
+    print(label + " = " + value)
+
+def print_hexlabel(label, tag, value):
+    print(label + " = hex" + tag + ":" + value)
+
+def parse_slh_dsa_key_gen(groups):
+    for grp in groups:
+        name = grp['parameterSet'].replace('-', '_')
+        for tst in grp['tests']:
+            print("");
+            print_label("FIPSversion", ">=3.5.0")
+            print_label("KeyGen", grp['parameterSet'])
+            print_label("KeyName", "tcId" + str(tst['tcId']))
+            print_hexlabel("Ctrl", "seed", tst['skSeed'] + tst['skPrf'] + tst['pkSeed'])
+            print_hexlabel("CtrlOut", "pub", tst['pk'])
+            print_hexlabel("CtrlOut", "priv", tst['sk'])
+
+def parse_slh_dsa_sig_gen(groups):
+    coverage = set()
+    for grp in groups:
+        name = grp['parameterSet'].replace('-', '_')
+        encoding = "1" if grp['preHash'] != 'none' else "0"
+        deterministic = "1" if grp['deterministic'] else "0"
+        for tst in grp['tests']:
+            if tst['hashAlg'] != 'none':
+                continue
+
+            # Check if there is a similar test already and skip if so
+            # Signature generation tests are very expensive, so we need to
+            # limit things substantially.  By default, we only test one of
+            # the slow flavours and one of each kind of the fast ones.
+            if name.find('f') >= 0:
+                context = "1" if 'context' in tst else "0"
+                coverage_name = name + "_" + encoding + deterministic + context
+            else:
+                coverage_name = name
+            extended_test = coverage_name in coverage
+            coverage.add(coverage_name)
+
+            # Emit test case
+            testname = name + "_" + str(tst['tcId'])
+            print("");
+            print_label("PrivateKeyRaw", testname + ":" + grp['parameterSet'] + ":" + tst['sk'])
+            print("");
+            print_label("FIPSversion", ">=3.5.0")
+            print_label("Sign-Message", grp['parameterSet'] + ":" + testname)
+            if extended_test:
+                print_label("Extended-Test", "1")
+            print_label("Input", tst['message'])
+            print_label("Output", tst['signature'])
+            if 'additionalRandomness' in tst:
+                print_hexlabel("Ctrl", "test-entropy", tst['additionalRandomness']);
+            print_label("Ctrl", "deterministic:" + deterministic)
+            print_label("Ctrl", "message-encoding:" + encoding)
+            if 'context' in tst:
+                print_hexlabel("Ctrl", "context-string", tst["context"])
+
+def parse_slh_dsa_sig_ver(groups):
+    for grp in groups:
+        name = grp['parameterSet'].replace('-', '_')
+        encoding = "1" if grp['preHash'] != 'none' else "0"
+        for tst in grp['tests']:
+            if tst['hashAlg'] != 'none':
+                continue
+            testname = name + "_" + str(tst['tcId'])
+            print("");
+            print_label("PublicKeyRaw", testname + ":" + grp['parameterSet'] + ":" + tst['pk'])
+            print("");
+            if "reason" in tst:
+                print("# " + tst['reason'])
+            print_label("FIPSversion", ">=3.5.0")
+            print_label("Verify-Message-Public", grp['parameterSet'] + ":" + testname)
+            print_label("Input", tst['message'])
+            print_label("Output", tst['signature'])
+            if 'additionalRandomness' in tst:
+                print_hexlabel("Ctrl", "test-entropy", tst['additionalRandomness']);
+            print_label("Ctrl", "message-encoding:" + encoding)
+            if 'context' in tst:
+                print_hexlabel("Ctrl", "context-string", tst["context"])
+            if not tst['testPassed']:
+                print_label("Result", "VERIFY_ERROR")
+
+parser = argparse.ArgumentParser(description="")
+parser.add_argument('filename', type=str)
+args = parser.parse_args()
+
+# Open and read the JSON file
+with open(args.filename, 'r') as file:
+    data = json.load(file)
+
+year = datetime.date.today().year
+version = data['vsId']
+algorithm = data['algorithm']
+mode = data['mode']
+
+print("# Copyright " + str(year) + " The OpenSSL Project Authors. All Rights Reserved.")
+print("#")
+print("# Licensed under the Apache License 2.0 (the \"License\").  You may not use")
+print("# this file except in compliance with the License.  You can obtain a copy")
+print("# in the file LICENSE in the source distribution or at")
+print("# https://www.openssl.org/source/license.html\n")
+print("# ACVP test data for " + algorithm + " " + mode + " generated from")
+print("# https://github.com/usnistgov/ACVP-Server/blob/master/gen-val/json-files/"
+      "SLH-DSA-" + mode + "-FIPS204/internalProjection.json")
+print("# [version " + str(version) + "]")
+
+if algorithm == "SLH-DSA":
+    if mode == 'sigVer':
+        parse_slh_dsa_sig_ver(data['testGroups'])
+    elif mode == 'sigGen':
+        parse_slh_dsa_sig_gen(data['testGroups'])
+    elif mode == 'keyGen':
+        parse_slh_dsa_key_gen(data['testGroups'])
+    else:
+        eprint("Unsupported mode " + mode)
+else:
+    eprint("Unsupported algorithm " + algorithm)