6XsQmhCb

1using System;
2using System.Runtime.InteropServices;
3using System.Text;
4
5// ref: https://github.com/jedisct1/libsodium/tree/master/src/libsodium/include/sodium/
6// ref: https://github.com/joshjdevl/libsodium-jni/blob/master/src/main/java/org/libsodium/jni/SodiumJNI.java
7// ref: https://github.com/adamcaudill/libsodium-net/blob/master/libsodium-net/SodiumLibrary.cs
8
9
10namespace unity.libsodium
11{
12    // crypto_generichash_state
13    [StructLayout(LayoutKind.Sequential, Size = 384)]
14    internal struct _HashState
15    {
16        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
17        public ulong[] h;
18
19        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 2)]
20        public ulong[] t;
21
22        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 2)]
23        public ulong[] f;
24
25        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 256)]
26        public byte[] buf;
27
28        public uint buflen;
29
30        public byte last_node;
31    }
32
33    /// <summary>
34    ///     Native libsodium wrapper for unity
35    ///     Functions are documented at https://download.libsodium.org/doc/
36    /// </summary>
37    public static class NativeLibsodium
38    {
39#if UNITY_IOS && !UNITY_EDITOR
40		const string DLL_NAME = "__Internal";
41#else
42        private const string DLL_NAME = "sodium";
43#endif
44
45        [DllImport(DLL_NAME)]
46        public static extern int sodium_init();
47
48        [DllImport(DLL_NAME)]
49        public static extern void randombytes_buf(byte[] buffer, int size);
50
51        [DllImport(DLL_NAME)]
52        public static extern int randombytes_uniform(int upperBound);
53
54        [DllImport(DLL_NAME)]
55        public static extern void sodium_increment(byte[] buffer, UIntPtr length);
56
57        [DllImport(DLL_NAME)]
58        public static extern int sodium_compare(byte[] a, byte[] b, UIntPtr length);
59
60        [DllImport(DLL_NAME)]
61        public static extern IntPtr sodium_version_string();
62
63        [DllImport(DLL_NAME)]
64        public static extern int crypto_hash(byte[] buffer, byte[] message, UIntPtr length);
65
66        [DllImport(DLL_NAME)]
67        public static extern int crypto_hash_sha512(byte[] buffer, byte[] message, UIntPtr length);
68
69        [DllImport(DLL_NAME)]
70        public static extern int crypto_hash_sha256(byte[] buffer, byte[] message, UIntPtr length);
71
72        [DllImport(DLL_NAME)]
73        public static extern int crypto_generichash(byte[] buffer, int bufferLength, byte[] message, long messageLength,
74            byte[] key, int keyLength);
75
76        [DllImport(DLL_NAME)]
77        public static extern int crypto_generichash_blake2b_salt_personal(byte[] buffer, int bufferLength,
78            byte[] message, long messageLength, byte[] key, int keyLength, byte[] salt, byte[] personal);
79
80        [DllImport(DLL_NAME)]
81        public static extern int crypto_onetimeauth(byte[] buffer, byte[] message, long messageLength, byte[] key);
82
83        [DllImport(DLL_NAME)]
84        public static extern int crypto_onetimeauth_verify(byte[] signature, byte[] message, long messageLength,
85            byte[] key);
86
87        [DllImport(DLL_NAME)]
88        public static extern int crypto_pwhash_str(byte[] buffer, byte[] password, long passwordLen, long opsLimit,
89            int memLimit);
90
91        [DllImport(DLL_NAME)]
92        public static extern int crypto_pwhash_str_verify(byte[] buffer, byte[] password, long passLength);
93
94        [DllImport(DLL_NAME)]
95        public static extern int crypto_pwhash(byte[] buffer, long bufferLen, byte[] password, long passwordLen,
96            byte[] salt, long opsLimit, int memLimit, int alg);
97
98        [DllImport(DLL_NAME)]
99        public static extern int crypto_pwhash_scryptsalsa208sha256_str(byte[] buffer, byte[] password,
100            long passwordLen, long opsLimit, int memLimit);
101
102        [DllImport(DLL_NAME)]
103        public static extern int crypto_pwhash_scryptsalsa208sha256(byte[] buffer, long bufferLen, byte[] password,
104            long passwordLen, byte[] salt, long opsLimit, int memLimit);
105
106        [DllImport(DLL_NAME)]
107        public static extern int crypto_pwhash_scryptsalsa208sha256_str_verify(byte[] buffer, byte[] password,
108            long passLength);
109
110        [DllImport(DLL_NAME)]
111        public static extern int crypto_sign_keypair(byte[] publicKey, byte[] secretKey);
112
113        [DllImport(DLL_NAME)]
114        public static extern int crypto_sign_seed_keypair(byte[] publicKey, byte[] secretKey, byte[] seed);
115
116        [DllImport(DLL_NAME)]
117        public static extern int crypto_sign(byte[] buffer, ref long bufferLength, byte[] message, long messageLength,
118            byte[] key);
119
120        [DllImport(DLL_NAME)]
121        public static extern int crypto_sign_open(byte[] buffer, ref long bufferLength, byte[] signedMessage,
122            long signedMessageLength, byte[] key);
123
124        [DllImport(DLL_NAME)]
125        public static extern int crypto_sign_detached(byte[] signature, ref long signatureLength, byte[] message,
126            long messageLength, byte[] key);
127
128        [DllImport(DLL_NAME)]
129        public static extern int crypto_sign_verify_detached(byte[] signature, byte[] message, long messageLength,
130            byte[] key);
131
132        [DllImport(DLL_NAME)]
133        public static extern int crypto_sign_ed25519_sk_to_seed(byte[] seed, byte[] secretKey);
134
135        [DllImport(DLL_NAME)]
136        public static extern int crypto_sign_ed25519_sk_to_pk(byte[] publicKey, byte[] secretKey);
137
138        [DllImport(DLL_NAME)]
139        public static extern int crypto_sign_ed25519_pk_to_curve25519(byte[] curve25519Pk, byte[] ed25519Pk);
140
141        [DllImport(DLL_NAME)]
142        public static extern int crypto_sign_ed25519_sk_to_curve25519(byte[] curve25519Sk, byte[] ed25519Sk);
143
144        [DllImport(DLL_NAME)]
145        public static extern int crypto_box_keypair(byte[] publicKey, byte[] secretKey);
146
147        [DllImport(DLL_NAME)]
148        public static extern int crypto_box_easy(byte[] buffer, byte[] message, long messageLength, byte[] nonce,
149            byte[] publicKey, byte[] secretKey);
150
151        [DllImport(DLL_NAME)]
152        public static extern int crypto_box_open_easy(byte[] buffer, byte[] cipherText, long cipherTextLength,
153            byte[] nonce, byte[] publicKey, byte[] secretKey);
154
155        [DllImport(DLL_NAME)]
156        public static extern int crypto_box_detached(byte[] cipher, byte[] mac, byte[] message, long messageLength,
157            byte[] nonce, byte[] pk, byte[] sk);
158
159        [DllImport(DLL_NAME)]
160        public static extern int crypto_box_open_detached(byte[] buffer, byte[] cipherText, byte[] mac,
161            long cipherTextLength, byte[] nonce, byte[] pk, byte[] sk);
162
163        [DllImport(DLL_NAME)]
164        public static extern int crypto_scalarmult_bytes();
165
166        [DllImport(DLL_NAME)]
167        public static extern int crypto_scalarmult_scalarbytes();
168
169        [DllImport(DLL_NAME)]
170        public static extern byte crypto_scalarmult_primitive();
171
172        [DllImport(DLL_NAME)]
173        public static extern int crypto_scalarmult_base(byte[] q, byte[] n);
174
175        [DllImport(DLL_NAME)]
176        public static extern int crypto_scalarmult(byte[] q, byte[] n, byte[] p);
177
178        [DllImport(DLL_NAME)]
179        public static extern int crypto_box_seal(byte[] buffer, byte[] message, long messageLength, byte[] pk);
180
181        [DllImport(DLL_NAME)]
182        public static extern int crypto_box_seal_open(byte[] buffer, byte[] cipherText, long cipherTextLength,
183            byte[] pk, byte[] sk);
184
185        [DllImport(DLL_NAME)]
186        public static extern int crypto_secretbox_easy(byte[] buffer, byte[] message, long messageLength, byte[] nonce,
187            byte[] key);
188
189        [DllImport(DLL_NAME)]
190        public static extern int crypto_secretbox_open_easy(byte[] buffer, byte[] cipherText, long cipherTextLength,
191            byte[] nonce, byte[] key);
192
193        [DllImport(DLL_NAME)]
194        public static extern int crypto_secretbox_detached(byte[] cipher, byte[] mac, byte[] message,
195            long messageLength, byte[] nonce, byte[] key);
196
197        [DllImport(DLL_NAME)]
198        public static extern int crypto_secretbox_open_detached(byte[] buffer, byte[] cipherText, byte[] mac,
199            long cipherTextLength, byte[] nonce, byte[] key);
200
201        [DllImport(DLL_NAME)]
202        public static extern int crypto_auth(byte[] buffer, byte[] message, long messageLength, byte[] key);
203
204        [DllImport(DLL_NAME)]
205        public static extern int crypto_auth_verify(byte[] signature, byte[] message, long messageLength, byte[] key);
206
207        [DllImport(DLL_NAME)]
208        public static extern int crypto_auth_hmacsha256(byte[] buffer, byte[] message, long messageLength, byte[] key);
209
210        [DllImport(DLL_NAME)]
211        public static extern int crypto_auth_hmacsha256_verify(byte[] signature, byte[] message, long messageLength,
212            byte[] key);
213
214        [DllImport(DLL_NAME)]
215        public static extern int crypto_auth_hmacsha512(byte[] signature, byte[] message, long messageLength,
216            byte[] key);
217
218        [DllImport(DLL_NAME)]
219        public static extern int crypto_auth_hmacsha512_verify(byte[] signature, byte[] message, long messageLength,
220            byte[] key);
221
222        [DllImport(DLL_NAME)]
223        public static extern int crypto_shorthash(byte[] buffer, byte[] message, long messageLength, byte[] key);
224
225        [DllImport(DLL_NAME)]
226        public static extern int crypto_stream_xor(byte[] buffer, byte[] message, long messageLength, byte[] nonce,
227            byte[] key);
228
229        [DllImport(DLL_NAME)]
230        public static extern int crypto_stream_chacha20_xor(byte[] buffer, byte[] message, long messageLength,
231            byte[] nonce, byte[] key);
232
233        [DllImport(DLL_NAME)]
234        public static extern IntPtr sodium_bin2hex(byte[] hex, int hexMaxlen, byte[] bin, int binLen);
235
236        [DllImport(DLL_NAME)]
237        public static extern int sodium_hex2bin(IntPtr bin, int binMaxlen, string hex, int hexLen, string ignore,
238            out int binLen, string hexEnd);
239
240        [DllImport(DLL_NAME)]
241        public static extern int crypto_aead_chacha20poly1305_encrypt(
242            IntPtr cipher, out long cipherLength, byte[] message, long messageLength, byte[] additionalData,
243            long additionalDataLength, byte[] nsec, byte[] nonce, byte[] key);
244
245        [DllImport(DLL_NAME)]
246        public static extern int crypto_aead_chacha20poly1305_decrypt(
247            IntPtr message, out long messageLength, byte[] nsec, byte[] cipher, long cipherLength,
248            byte[] additionalData,
249            long additionalDataLength, byte[] nonce, byte[] key);
250
251        [DllImport(DLL_NAME)]
252        public static extern int crypto_aead_aes256gcm_is_available();
253
254        [DllImport(DLL_NAME)]
255        public static extern int crypto_aead_aes256gcm_encrypt(
256            IntPtr cipher, out long cipherLength, byte[] message, long messageLength, byte[] additionalData,
257            long additionalDataLength, byte[] nsec, byte[] nonce, byte[] key);
258
259        [DllImport(DLL_NAME)]
260        public static extern int crypto_aead_aes256gcm_decrypt(
261            IntPtr message, out long messageLength, byte[] nsec, byte[] cipher, long cipherLength,
262            byte[] additionalData,
263            long additionalDataLength, byte[] nonce, byte[] key);
264
265        [DllImport(DLL_NAME)]
266        public static extern int crypto_generichash_init(IntPtr state, byte[] key, int keySize, int hashSize);
267
268        [DllImport(DLL_NAME)]
269        public static extern int crypto_generichash_update(IntPtr state, byte[] message, long messageLength);
270
271        [DllImport(DLL_NAME)]
272        public static extern int crypto_generichash_final(IntPtr state, byte[] buffer, int bufferLength);
273
274        [DllImport(DLL_NAME)]
275        public static extern int crypto_stream_chacha20_xor_ic(byte[] c, byte[] m, ulong mlen, byte[] n, ulong ic,
276            byte[] k);
277
278        [DllImport(DLL_NAME)]
279        public static extern int crypto_stream_chacha20_xor_ic_offset(byte[] c, ulong c_offset, byte[] m,
280            ulong m_offset, ulong mlen, byte[] n, ulong ic, byte[] k);
281
282        [DllImport(DLL_NAME)]
283        public static extern int crypto_stream_aes128ctr_xor(byte[] c, byte[] m, ulong inlen, byte[] n, byte[] k);
284
285        [DllImport(DLL_NAME)]
286        public static extern int crypto_stream_aes128ctr_beforenm(byte[] tbl, byte[] k);
287
288        [DllImport(DLL_NAME)]
289        public static extern int crypto_stream_aes128ctr_xor_afternm(byte[] c, byte[] m, ulong len, byte[] nonce,
290            byte[] tbl);
291
292        [DllImport(DLL_NAME)]
293        public static extern int crypto_stream_aes128ctr_xor_afternm_offset(byte[] c, ulong c_offset, byte[] m,
294            ulong m_offset, ulong len, byte[] nonce, byte[] tbl);
295
296        [DllImport(DLL_NAME)]
297        public static extern int crypto_kx_seed_keypair(byte[] publicKey, byte[] secretKey, byte[] seed);
298
299        [DllImport(DLL_NAME)]
300        public static extern int crypto_kx_keypair(byte[] publicKey, byte[] secretKey);
301
302        [DllImport(DLL_NAME)]
303        public static extern int crypto_kx_client_session_keys(byte[] rx, byte[] tx, byte[] client_pk, byte[] client_sk,
304            byte[] server_pk);
305
306        [DllImport(DLL_NAME)]
307        public static extern int crypto_kx_server_session_keys(byte[] rx, byte[] tx, byte[] server_pk, byte[] server_sk,
308            byte[] client_pk);
309    }
310
311}