1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
|
using Microsoft.VisualStudio.TestTools.UnitTesting;
using System;
using System.Text;
using System.Text.Json;
using VNLib.Utils.Memory;
using VNLib.Utils.Extensions;
using VNLib.Utils.Cryptography.Noscrypt.Encryption;
using VNLib.Utils.Cryptography.Noscrypt.Random;
namespace VNLib.Utils.Cryptography.Noscrypt.Tests
{
[TestClass()]
public class NoscryptVectorTests : IDisposable
{
const string Nip44VectorTestFile = "nip44.vectors.json";
#nullable disable
private NoscryptLibrary _testLib;
private JsonDocument _testVectors;
#nullable enable
[TestInitialize]
public void Initialize()
{
_testLib = NoscryptLibrary.LoadDefault();
_testVectors = JsonDocument.Parse(File.ReadAllText(Nip44VectorTestFile));
}
[TestMethod()]
public void CorrectEncryptionTest()
{
using NCContext context = _testLib.Initialize(MemoryUtil.Shared, NCFallbackRandom.Shared);
using NoscryptMessageCipher cipher = NoscryptMessageCipher.Create(context, NoscryptCipherVersion.Nip44, NoscryptCipherFlags.EncryptDefault);
using IMemoryHandle<byte> ctBuffer = MemoryUtil.SafeAllocNearestPage(1200, false);
foreach (EncryptionVector v in GetEncryptionVectors())
{
ReadOnlySpan<byte> secKey1 = Convert.FromHexString(v.sec1);
ReadOnlySpan<byte> secKey2 = Convert.FromHexString(v.sec2);
ReadOnlySpan<byte> plainText = Encoding.UTF8.GetBytes(v.plaintext);
ReadOnlySpan<byte> nonce = Convert.FromHexString(v.nonce);
ReadOnlySpan<byte> message = Convert.FromBase64String(v.payload);
NCPublicKey pub2;
//Recover public keys
NCKeyUtil.GetPublicKey(context, in NCKeyUtil.AsSecretKey(secKey2), ref pub2);
//Assign existing nonce
nonce.CopyTo(cipher.IvBuffer);
cipher.Update(
in NCKeyUtil.AsSecretKey(secKey1),
in pub2,
plainText
);
Span<byte> outputBuffer = ctBuffer.AsSpan(0, cipher.GetOutputSize());
Assert.AreEqual<int>(cipher.ReadOutput(outputBuffer), message.Length);
//Make sure the cipher text matches the expected payload
if (!outputBuffer.SequenceEqual(message))
{
Console.WriteLine($"Input data: {v.plaintext}");
Console.WriteLine($" \n{Convert.ToHexString(outputBuffer)}\n{Convert.ToHexString(message)}");
Assert.Fail($"Cipher text does not match expected message");
}
}
}
[TestMethod()]
public void CorrectDecryptionTest()
{
using NCContext context = _testLib.Initialize(MemoryUtil.Shared, NCFallbackRandom.Shared);
using NoscryptMessageCipher msgCipher = NoscryptMessageCipher.Create(context, NoscryptCipherVersion.Nip44, NoscryptCipherFlags.DecryptDefault);
using IMemoryHandle<byte> ptBuffer = MemoryUtil.SafeAllocNearestPage(1200, false);
foreach (EncryptionVector vector in GetEncryptionVectors())
{
ReadOnlySpan<byte> secKey1 = Convert.FromHexString(vector.sec1);
ReadOnlySpan<byte> secKey2 = Convert.FromHexString(vector.sec2);
ReadOnlySpan<byte> expectedPt = Encoding.UTF8.GetBytes(vector.plaintext);
ReadOnlySpan<byte> message = Convert.FromBase64String(vector.payload);
NCPublicKey pub2 = default;
//Recover public keys
NCKeyUtil.GetPublicKey(context, in NCKeyUtil.AsSecretKey(secKey2), ref pub2);
//update performs the decryption operation (mac is also verified by default)
msgCipher.Update(
in NCKeyUtil.AsSecretKey(secKey1),
in pub2,
message
);
int outLen = msgCipher.GetOutputSize();
Assert.IsTrue(outLen == expectedPt.Length);
Span<byte> plaintext = ptBuffer.AsSpan(0, outLen);
msgCipher.ReadOutput(plaintext);
if (!plaintext.SequenceEqual(expectedPt))
{
Console.WriteLine($"Input data: {vector.plaintext}");
Console.WriteLine($" \n{Convert.ToHexString(plaintext)}\n{Convert.ToHexString(expectedPt)}");
Assert.Fail("Decrypted data does not match expected plaintext");
}
}
}
//Converstation key is only available in debug builds
#if DEBUG
[TestMethod()]
public void ConverstationKeyTest()
{
using NCContext context = _testLib.Initialize(MemoryUtil.Shared, NCFallbackRandom.Shared);
Span<byte> convKeyOut = stackalloc byte[32];
foreach (EncryptionVector v in GetEncryptionVectors())
{
ReadOnlySpan<byte> secKey1 = Convert.FromHexString(v.sec1);
ReadOnlySpan<byte> secKey2 = Convert.FromHexString(v.sec2);
ReadOnlySpan<byte> conversationKey = Convert.FromHexString(v.conversation_key);
NCPublicKey pubkey2 = default;
NCKeyUtil.GetPublicKey(context, in NCKeyUtil.AsSecretKey(secKey2), ref pubkey2);
NCCipherUtil.GetConverstationKey(
context,
in NCKeyUtil.AsSecretKey(secKey1),
in pubkey2,
convKeyOut
);
Assert.IsTrue(conversationKey.SequenceEqual(convKeyOut));
MemoryUtil.InitializeBlock(convKeyOut);
}
}
#endif
private EncryptionVector[] GetEncryptionVectors()
{
return _testVectors.RootElement.GetProperty("v2")
.GetProperty("valid")
.GetProperty("encrypt_decrypt")
.EnumerateArray()
.Select(v => v.Deserialize<EncryptionVector>()!)
.ToArray();
}
void IDisposable.Dispose()
{
_testLib.Dispose();
_testVectors.Dispose();
GC.SuppressFinalize(this);
}
private sealed class EncryptionVector
{
public string sec1 { get; set; } = string.Empty;
public string sec2 { get; set; } = string.Empty;
public string nonce { get; set; } = string.Empty;
public string plaintext { get; set; } = string.Empty;
public string payload { get; set; } = string.Empty;
public string conversation_key { get; set; } = string.Empty;
}
}
}
|
