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| 1 | +# test_mldsa.py |
| 2 | +# |
| 3 | +# Copyright (C) 2025 wolfSSL Inc. |
| 4 | +# |
| 5 | +# This file is part of wolfSSL. (formerly known as CyaSSL) |
| 6 | +# |
| 7 | +# wolfSSL is free software; you can redistribute it and/or modify |
| 8 | +# it under the terms of the GNU General Public License as published by |
| 9 | +# the Free Software Foundation; either version 2 of the License, or |
| 10 | +# (at your option) any later version. |
| 11 | +# |
| 12 | +# wolfSSL is distributed in the hope that it will be useful, |
| 13 | +# but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | +# GNU General Public License for more details. |
| 16 | +# |
| 17 | +# You should have received a copy of the GNU General Public License |
| 18 | +# along with this program; if not, write to the Free Software |
| 19 | +# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA |
| 20 | + |
| 21 | +# pylint: disable=redefined-outer-name |
| 22 | + |
| 23 | +from wolfcrypt._ffi import lib as _lib |
| 24 | + |
| 25 | +if hasattr(_lib, "ML_DSA_ENABLED") and _lib.ML_DSA_ENABLED: |
| 26 | + from binascii import unhexlify as h2b |
| 27 | + |
| 28 | + import pytest |
| 29 | + |
| 30 | + from wolfcrypt.mldsa import MlDsaPrivate, MlDsaPublic, MlDsaType |
| 31 | + from wolfcrypt.random import Random |
| 32 | + |
| 33 | + @pytest.fixture |
| 34 | + def rng(): |
| 35 | + return Random() |
| 36 | + |
| 37 | + @pytest.fixture(params=[MlDsaType.ML_DSA_44, MlDsaType.ML_DSA_65, MlDsaType.ML_DSA_87]) |
| 38 | + def mldsa_type(request): |
| 39 | + return request.param |
| 40 | + |
| 41 | + def test_init_base(mldsa_type): |
| 42 | + mldsa_priv = MlDsaPrivate(mldsa_type) |
| 43 | + assert isinstance(mldsa_priv, MlDsaPrivate) |
| 44 | + |
| 45 | + mldsa_pub = MlDsaPublic(mldsa_type) |
| 46 | + assert isinstance(mldsa_pub, MlDsaPublic) |
| 47 | + |
| 48 | + def test_key_sizes(mldsa_type): |
| 49 | + mldsa_priv = MlDsaPrivate(mldsa_type) |
| 50 | + |
| 51 | + # Check that key sizes are returned correctly |
| 52 | + assert mldsa_priv.priv_key_size > 0 |
| 53 | + assert mldsa_priv.pub_key_size > 0 |
| 54 | + assert mldsa_priv.sig_size > 0 |
| 55 | + |
| 56 | + # Public key should have the same pub_key_size |
| 57 | + mldsa_pub = MlDsaPublic(mldsa_type) |
| 58 | + assert mldsa_pub.pub_key_size == mldsa_priv.pub_key_size |
| 59 | + assert mldsa_pub.sig_size == mldsa_priv.sig_size |
| 60 | + |
| 61 | + """ |
| 62 | + def test_key_generation(mldsa_type, rng): |
| 63 | + # Test key generation |
| 64 | + mldsa_priv = MlDsaPrivate.make_key(mldsa_type, rng) |
| 65 | + assert isinstance(mldsa_priv, MlDsaPrivate) |
| 66 | +
|
| 67 | + # Export keys |
| 68 | + priv_key = mldsa_priv.encode_priv_key() |
| 69 | + pub_key = mldsa_priv.encode_pub_key() |
| 70 | +
|
| 71 | + # Check key sizes |
| 72 | + assert len(priv_key) == mldsa_priv.priv_key_size |
| 73 | + assert len(pub_key) == mldsa_priv.pub_key_size |
| 74 | + """ |
| 75 | + |
| 76 | + """ |
| 77 | + def test_key_import_export(mldsa_type, rng): |
| 78 | + # Generate a key pair |
| 79 | + mldsa_priv = MlDsaPrivate.make_key(mldsa_type, rng) |
| 80 | +
|
| 81 | + # Export keys |
| 82 | + priv_key = mldsa_priv.encode_priv_key() |
| 83 | + pub_key = mldsa_priv.encode_pub_key() |
| 84 | +
|
| 85 | + # Import private key |
| 86 | + mldsa_priv2 = MlDsaPrivate(mldsa_type) |
| 87 | + mldsa_priv2.decode_key(priv_key) |
| 88 | +
|
| 89 | + # Export keys from imported private key |
| 90 | + priv_key2 = mldsa_priv2.encode_priv_key() |
| 91 | + pub_key2 = mldsa_priv2.encode_pub_key() |
| 92 | +
|
| 93 | + # Keys should match |
| 94 | + assert priv_key == priv_key2 |
| 95 | + assert pub_key == pub_key2 |
| 96 | +
|
| 97 | + # Import public key |
| 98 | + mldsa_pub = MlDsaPublic(mldsa_type) |
| 99 | + mldsa_pub.decode_key(pub_key) |
| 100 | +
|
| 101 | + # Export public key from imported public key |
| 102 | + pub_key3 = mldsa_pub.encode_key() |
| 103 | +
|
| 104 | + # Public keys should match |
| 105 | + assert pub_key == pub_key3 |
| 106 | + """ |
| 107 | + |
| 108 | + def test_sign_verify(mldsa_type, rng): |
| 109 | + # Generate a key pair |
| 110 | + mldsa_priv = MlDsaPrivate.make_key(mldsa_type, rng) |
| 111 | + |
| 112 | + # Export public key |
| 113 | + pub_key = mldsa_priv.encode_pub_key() |
| 114 | + |
| 115 | + # Import public key |
| 116 | + mldsa_pub = MlDsaPublic(mldsa_type) |
| 117 | + mldsa_pub.decode_key(pub_key) |
| 118 | + |
| 119 | + # Sign a message |
| 120 | + message = b"This is a test message for ML-DSA signature" |
| 121 | + signature = mldsa_priv.sign(message, rng) |
| 122 | + |
| 123 | + # Verify the signature |
| 124 | + assert mldsa_pub.verify(signature, message) |
| 125 | + |
| 126 | + # Verify with wrong message |
| 127 | + wrong_message = b"This is a wrong message for ML-DSA signature" |
| 128 | + assert not mldsa_pub.verify(signature, wrong_message) |
| 129 | + |
| 130 | + """ |
| 131 | + def test_der_encoding(mldsa_type, rng): |
| 132 | + # Generate a key pair |
| 133 | + mldsa_priv = MlDsaPrivate.make_key(mldsa_type, rng) |
| 134 | +
|
| 135 | + # Export keys in DER format |
| 136 | + priv_key_der = mldsa_priv.encode_priv_key_der() |
| 137 | + pub_key_der = mldsa_priv.encode_pub_key_der() |
| 138 | +
|
| 139 | + # Check that DER encoded keys are longer than raw keys |
| 140 | + assert len(priv_key_der) > mldsa_priv.priv_key_size |
| 141 | + assert len(pub_key_der) > mldsa_priv.pub_key_size |
| 142 | +
|
| 143 | + # Test public key DER encoding from public key object |
| 144 | + mldsa_pub = MlDsaPublic(mldsa_type) |
| 145 | + mldsa_pub.decode_key(mldsa_priv.encode_pub_key()) |
| 146 | + pub_key_der2 = mldsa_pub.encode_key_der() |
| 147 | +
|
| 148 | + # DER encoded public keys should match |
| 149 | + assert pub_key_der == pub_key_der2 |
| 150 | + """ |
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