-
Notifications
You must be signed in to change notification settings - Fork 2
/
params.go
385 lines (377 loc) · 8.67 KB
/
params.go
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
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
package hpke
import (
"crypto/elliptic"
"crypto/sha256"
"crypto/sha512"
"errors"
"hash"
"github.com/aead/ecdh"
)
// Params is a struct for parameters
type Params struct {
curve ecdh.KeyExchange
//bitSize int
hashFn func() hash.Hash
nk uint8
nh uint8
ciphersuite uint8
mode uint8
PubKeySize int
PrvKeySize int
}
const (
mode_base uint8 = iota
mode_psk
mode_auth
)
const (
BASE_P256_SHA256_AES_GCM_128 byte = iota
BASE_P256_SHA256_ChaCha20Poly1305
PSK_P256_SHA256_AES_GCM_128
PSK_P256_SHA256_ChaCha20Poly1305
AUTH_P256_SHA256_AES_GCM_128
AUTH_P256_SHA256_ChaCha20Poly1305
BASE_X25519_SHA256_AES_GCM_128
BASE_X25519_SHA256_ChaCha20Poly1305
PSK_X25519_SHA256_AES_GCM_128
PSK_X25519_SHA256_ChaCha20Poly1305
AUTH_X25519_SHA256_AES_GCM_128
AUTH_X25519_SHA256_ChaCha20Poly1305
BASE_P521_SHA512_AES_GCM_256
BASE_P521_SHA512_ChaCha20Poly1305
PSK_P521_SHA512_AES_GCM_256
PSK_P521_SHA512_ChaCha20Poly1305
AUTH_P521_SHA512_AES_GCM_256
AUTH_P521_SHA512_ChaCha20Poly1305
BASE_P256_SHA256_XChaCha20Blake2bSIV
PSK_P256_SHA256_XChaCha20Blake2bSIV
AUTH_P256_SHA256_XChaCha20Blake2bSIV
BASE_X25519_SHA256_XChaCha20Blake2bSIV
PSK_X25519_SHA256_XChaCha20Blake2bSIV
AUTH_X25519_SHA256_XChaCha20Blake2bSIV
BASE_P521_SHA256_XChaCha20Blake2bSIV
PSK_P521_SHA256_XChaCha20Blake2bSIV
AUTH_P521_SHA256_XChaCha20Blake2bSIV
)
const nn = uint8(12)
func GetParams(mode byte) (*Params, error) {
switch mode {
case BASE_P256_SHA256_AES_GCM_128:
return &Params{
curve: ecdh.Generic(elliptic.P256()),
// bitSize: 256,
hashFn: sha256.New,
nk: 16,
nh: 32,
ciphersuite: 1,
mode: mode_base,
PubKeySize: 64,
PrvKeySize: 32,
}, nil
case BASE_P256_SHA256_ChaCha20Poly1305:
return &Params{
curve: ecdh.Generic(elliptic.P256()),
// bitSize: 256,
hashFn: sha256.New,
nk: 32,
nh: 32,
ciphersuite: 2,
mode: mode_base,
PubKeySize: 64,
PrvKeySize: 32,
}, nil
case BASE_P256_SHA256_XChaCha20Blake2bSIV:
return &Params{
curve: ecdh.Generic(elliptic.P256()),
// bitSize: 256,
hashFn: sha256.New,
nk: 32,
nh: 32,
ciphersuite: 7,
mode: mode_base,
PubKeySize: 64,
PrvKeySize: 32,
}, nil
case PSK_P256_SHA256_AES_GCM_128:
return &Params{
curve: ecdh.Generic(elliptic.P256()),
// bitSize: 256,
hashFn: sha256.New,
nk: 16,
nh: 32,
ciphersuite: 1,
mode: mode_psk,
PubKeySize: 64,
PrvKeySize: 32,
}, nil
case PSK_P256_SHA256_ChaCha20Poly1305:
return &Params{
curve: ecdh.Generic(elliptic.P256()),
// bitSize: 256,
hashFn: sha256.New,
nk: 32,
nh: 32,
ciphersuite: 2,
mode: mode_psk,
PubKeySize: 64,
PrvKeySize: 32,
}, nil
case PSK_P256_SHA256_XChaCha20Blake2bSIV:
return &Params{
curve: ecdh.Generic(elliptic.P256()),
// bitSize: 256,
hashFn: sha256.New,
nk: 32,
nh: 32,
ciphersuite: 7,
mode: mode_psk,
PubKeySize: 64,
PrvKeySize: 32,
}, nil
case AUTH_P256_SHA256_AES_GCM_128:
return &Params{
curve: ecdh.Generic(elliptic.P256()),
// bitSize: 256,
hashFn: sha256.New,
nk: 16,
nh: 32,
ciphersuite: 1,
mode: mode_auth,
PubKeySize: 64,
PrvKeySize: 32,
}, nil
case AUTH_P256_SHA256_ChaCha20Poly1305:
return &Params{
curve: ecdh.Generic(elliptic.P256()),
// bitSize: 256,
hashFn: sha256.New,
nk: 32,
nh: 32,
ciphersuite: 2,
mode: mode_auth,
PubKeySize: 64,
PrvKeySize: 32,
}, nil
case AUTH_P256_SHA256_XChaCha20Blake2bSIV:
return &Params{
curve: ecdh.Generic(elliptic.P256()),
// bitSize: 256,
hashFn: sha256.New,
nk: 32,
nh: 32,
ciphersuite: 7,
mode: mode_auth,
PubKeySize: 64,
PrvKeySize: 32,
}, nil
case BASE_X25519_SHA256_AES_GCM_128:
return &Params{
curve: ecdh.X25519(),
// bitSize: 256,
hashFn: sha256.New,
nk: 16,
nh: 32,
ciphersuite: 3,
mode: mode_base,
PubKeySize: 32,
PrvKeySize: 32,
}, nil
case BASE_X25519_SHA256_ChaCha20Poly1305:
return &Params{
curve: ecdh.X25519(),
// bitSize: 256,
hashFn: sha256.New,
nk: 32,
nh: 32,
ciphersuite: 4,
mode: mode_base,
PubKeySize: 32,
PrvKeySize: 32,
}, nil
case BASE_X25519_SHA256_XChaCha20Blake2bSIV:
return &Params{
curve: ecdh.X25519(),
// bitSize: 256,
hashFn: sha256.New,
nk: 32,
nh: 32,
ciphersuite: 8,
mode: mode_base,
PubKeySize: 32,
PrvKeySize: 32,
}, nil
case PSK_X25519_SHA256_AES_GCM_128:
return &Params{
curve: ecdh.X25519(),
// bitSize: 256,
hashFn: sha256.New,
nk: 16,
nh: 32,
ciphersuite: 3,
mode: mode_psk,
PubKeySize: 32,
PrvKeySize: 32,
}, nil
case PSK_X25519_SHA256_ChaCha20Poly1305:
return &Params{
curve: ecdh.X25519(),
// bitSize: 256,
hashFn: sha256.New,
nk: 32,
nh: 32,
ciphersuite: 4,
mode: mode_psk,
PubKeySize: 32,
PrvKeySize: 32,
}, nil
case PSK_X25519_SHA256_XChaCha20Blake2bSIV:
return &Params{
curve: ecdh.X25519(),
// bitSize: 256,
hashFn: sha256.New,
nk: 32,
nh: 32,
ciphersuite: 8,
mode: mode_psk,
PubKeySize: 32,
PrvKeySize: 32,
}, nil
case AUTH_X25519_SHA256_AES_GCM_128:
return &Params{
curve: ecdh.X25519(),
// bitSize: 256,
hashFn: sha256.New,
nk: 16,
nh: 32,
ciphersuite: 3,
mode: mode_auth,
PubKeySize: 32,
PrvKeySize: 32,
}, nil
case AUTH_X25519_SHA256_ChaCha20Poly1305:
return &Params{
curve: ecdh.X25519(),
// bitSize: 256,
hashFn: sha256.New,
nk: 32,
nh: 32,
ciphersuite: 4,
mode: mode_auth,
PubKeySize: 32,
PrvKeySize: 32,
}, nil
case AUTH_X25519_SHA256_XChaCha20Blake2bSIV:
return &Params{
curve: ecdh.X25519(),
// bitSize: 256,
hashFn: sha256.New,
nk: 32,
nh: 32,
ciphersuite: 8,
mode: mode_auth,
PubKeySize: 32,
PrvKeySize: 32,
}, nil
case BASE_P521_SHA512_AES_GCM_256:
return &Params{
curve: ecdh.Generic(elliptic.P521()),
hashFn: sha512.New,
nk: 32,
nh: 64,
ciphersuite: 5,
mode: mode_base,
PubKeySize: 132,
PrvKeySize: 66,
}, nil
case BASE_P521_SHA512_ChaCha20Poly1305:
return &Params{
curve: ecdh.Generic(elliptic.P521()),
hashFn: sha512.New,
nk: 32,
nh: 64,
ciphersuite: 6,
mode: mode_base,
PubKeySize: 132,
PrvKeySize: 66,
}, nil
case BASE_P521_SHA256_XChaCha20Blake2bSIV:
return &Params{
curve: ecdh.Generic(elliptic.P521()),
hashFn: sha256.New,
nk: 32,
nh: 32,
ciphersuite: 9,
mode: mode_base,
PubKeySize: 132,
PrvKeySize: 66,
}, nil
case PSK_P521_SHA512_AES_GCM_256:
return &Params{
curve: ecdh.Generic(elliptic.P521()),
hashFn: sha512.New,
nk: 32,
nh: 64,
ciphersuite: 5,
mode: mode_psk,
PubKeySize: 132,
PrvKeySize: 66,
}, nil
case PSK_P521_SHA512_ChaCha20Poly1305:
return &Params{
curve: ecdh.Generic(elliptic.P521()),
hashFn: sha512.New,
nk: 32,
nh: 64,
ciphersuite: 6,
mode: mode_psk,
PubKeySize: 132,
PrvKeySize: 66,
}, nil
case PSK_P521_SHA256_XChaCha20Blake2bSIV:
return &Params{
curve: ecdh.Generic(elliptic.P521()),
hashFn: sha256.New,
nk: 32,
nh: 32,
ciphersuite: 9,
mode: mode_psk,
PubKeySize: 132,
PrvKeySize: 66,
}, nil
case AUTH_P521_SHA512_AES_GCM_256:
return &Params{
curve: ecdh.Generic(elliptic.P521()),
hashFn: sha512.New,
nk: 32,
nh: 64,
ciphersuite: 5,
mode: mode_auth,
PubKeySize: 132,
PrvKeySize: 66,
}, nil
case AUTH_P521_SHA512_ChaCha20Poly1305:
return &Params{
curve: ecdh.Generic(elliptic.P521()),
hashFn: sha512.New,
nk: 32,
nh: 64,
ciphersuite: 6,
mode: mode_auth,
PubKeySize: 132,
PrvKeySize: 66,
}, nil
case AUTH_P521_SHA256_XChaCha20Blake2bSIV:
return &Params{
curve: ecdh.Generic(elliptic.P521()),
hashFn: sha256.New,
nk: 32,
nh: 32,
ciphersuite: 9,
mode: mode_auth,
PubKeySize: 132,
PrvKeySize: 66,
}, nil
default:
return nil, errors.New("unknown mode")
}
}