forked from openmls/openmls
-
Notifications
You must be signed in to change notification settings - Fork 0
/
types.rs
608 lines (533 loc) · 16.8 KB
/
types.rs
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
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
//! # OpenMLS Types
//!
//! This module holds a number of types that are needed by the traits.
use std::ops::Deref;
use serde::{Deserialize, Serialize};
use tls_codec::{
SecretVLBytes, TlsDeserialize, TlsDeserializeBytes, TlsSerialize, TlsSize, VLBytes,
};
#[derive(Debug, PartialEq, Eq, Clone, Copy, Serialize, Deserialize)]
#[repr(u16)]
/// AEAD types
pub enum AeadType {
/// AES GCM 128
Aes128Gcm = 0x0001,
/// AES GCM 256
Aes256Gcm = 0x0002,
/// ChaCha20 Poly1305
ChaCha20Poly1305 = 0x0003,
}
impl AeadType {
/// Get the tag size of the [`AeadType`] in bytes.
pub const fn tag_size(&self) -> usize {
match self {
AeadType::Aes128Gcm => 16,
AeadType::Aes256Gcm => 16,
AeadType::ChaCha20Poly1305 => 16,
}
}
/// Get the key size of the [`AeadType`] in bytes.
pub const fn key_size(&self) -> usize {
match self {
AeadType::Aes128Gcm => 16,
AeadType::Aes256Gcm => 32,
AeadType::ChaCha20Poly1305 => 32,
}
}
/// Get the nonce size of the [`AeadType`] in bytes.
pub const fn nonce_size(&self) -> usize {
match self {
AeadType::Aes128Gcm | AeadType::Aes256Gcm | AeadType::ChaCha20Poly1305 => 12,
}
}
}
#[derive(Debug, PartialEq, Eq, Clone, Copy)]
#[repr(u8)]
#[allow(non_camel_case_types)]
/// Hash types
pub enum HashType {
Sha2_256 = 0x04,
Sha2_384 = 0x05,
Sha2_512 = 0x06,
}
impl HashType {
/// Returns the output size of a hash by [`HashType`].
#[inline]
pub const fn size(&self) -> usize {
match self {
HashType::Sha2_256 => 32,
HashType::Sha2_384 => 48,
HashType::Sha2_512 => 64,
}
}
}
/// SignatureScheme according to IANA TLS parameters
#[allow(non_camel_case_types)]
#[allow(clippy::upper_case_acronyms)]
#[derive(
Copy,
Hash,
Eq,
PartialEq,
Clone,
Debug,
Serialize,
Deserialize,
TlsSerialize,
TlsDeserialize,
TlsDeserializeBytes,
TlsSize,
)]
#[repr(u16)]
pub enum SignatureScheme {
/// ECDSA_SECP256R1_SHA256
ECDSA_SECP256R1_SHA256 = 0x0403,
/// ECDSA_SECP384R1_SHA384
ECDSA_SECP384R1_SHA384 = 0x0503,
/// ECDSA_SECP521R1_SHA512
ECDSA_SECP521R1_SHA512 = 0x0603,
/// ED25519
ED25519 = 0x0807,
/// ED448
ED448 = 0x0808,
}
impl TryFrom<u16> for SignatureScheme {
type Error = String;
fn try_from(value: u16) -> Result<Self, Self::Error> {
match value {
0x0403 => Ok(SignatureScheme::ECDSA_SECP256R1_SHA256),
0x0503 => Ok(SignatureScheme::ECDSA_SECP384R1_SHA384),
0x0603 => Ok(SignatureScheme::ECDSA_SECP521R1_SHA512),
0x0807 => Ok(SignatureScheme::ED25519),
0x0808 => Ok(SignatureScheme::ED448),
_ => Err(format!("Unsupported SignatureScheme: {value}")),
}
}
}
/// Crypto errors.
#[derive(Debug, PartialEq, Eq, Clone, Copy)]
pub enum CryptoError {
CryptoLibraryError,
AeadDecryptionError,
HpkeDecryptionError,
HpkeEncryptionError,
UnsupportedSignatureScheme,
KdfLabelTooLarge,
KdfSerializationError,
HkdfOutputLengthInvalid,
InsufficientRandomness,
InvalidSignature,
UnsupportedAeadAlgorithm,
UnsupportedKdf,
InvalidLength,
UnsupportedHashAlgorithm,
SignatureEncodingError,
SignatureDecodingError,
SenderSetupError,
ReceiverSetupError,
ExporterError,
UnsupportedCiphersuite,
TlsSerializationError,
TooMuchData,
SigningError,
InvalidPublicKey,
}
impl std::fmt::Display for CryptoError {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "{self:?}")
}
}
impl std::error::Error for CryptoError {}
// === HPKE === //
/// Convenience tuple struct for an HPKE configuration.
#[derive(Debug)]
pub struct HpkeConfig(pub HpkeKemType, pub HpkeKdfType, pub HpkeAeadType);
/// KEM Types for HPKE
#[derive(PartialEq, Eq, Copy, Clone, Debug, Serialize, Deserialize)]
#[repr(u16)]
pub enum HpkeKemType {
/// DH KEM on P256
DhKemP256 = 0x0010,
/// DH KEM on P384
DhKemP384 = 0x0011,
/// DH KEM on P521
DhKemP521 = 0x0012,
/// DH KEM on x25519
DhKem25519 = 0x0020,
/// DH KEM on x448
DhKem448 = 0x0021,
/// XWing combiner for ML-KEM and X25519
XWingKemDraft2 = 0x004D,
}
/// KDF Types for HPKE
#[derive(PartialEq, Eq, Copy, Clone, Debug, Serialize, Deserialize)]
#[repr(u16)]
pub enum HpkeKdfType {
/// HKDF SHA 256
HkdfSha256 = 0x0001,
/// HKDF SHA 384
HkdfSha384 = 0x0002,
/// HKDF SHA 512
HkdfSha512 = 0x0003,
}
/// AEAD Types for HPKE.
#[derive(Clone, Copy, Debug, PartialEq, Eq, Serialize, Deserialize)]
#[repr(u16)]
pub enum HpkeAeadType {
/// AES GCM 128
AesGcm128 = 0x0001,
/// AES GCM 256
AesGcm256 = 0x0002,
/// ChaCha20 Poly1305
ChaCha20Poly1305 = 0x0003,
/// Export-only
Export = 0xFFFF,
}
/// 7.7. Update Paths
///
/// ```text
/// struct {
/// opaque kem_output<V>;
/// opaque ciphertext<V>;
/// } HPKECiphertext;
/// ```
#[derive(
Debug,
PartialEq,
Eq,
Clone,
Serialize,
Deserialize,
TlsSerialize,
TlsDeserialize,
TlsDeserializeBytes,
TlsSize,
)]
pub struct HpkeCiphertext {
pub kem_output: VLBytes,
pub ciphertext: VLBytes,
}
/// A simple type for HPKE private keys.
#[derive(
Debug,
Clone,
serde::Serialize,
serde::Deserialize,
TlsSerialize,
TlsDeserialize,
TlsDeserializeBytes,
TlsSize,
)]
#[cfg_attr(feature = "test-utils", derive(PartialEq, Eq))]
#[serde(transparent)]
pub struct HpkePrivateKey(SecretVLBytes);
impl From<Vec<u8>> for HpkePrivateKey {
fn from(bytes: Vec<u8>) -> Self {
Self(bytes.into())
}
}
impl From<&[u8]> for HpkePrivateKey {
fn from(bytes: &[u8]) -> Self {
Self(bytes.into())
}
}
impl std::ops::Deref for HpkePrivateKey {
type Target = [u8];
fn deref(&self) -> &Self::Target {
self.0.as_slice()
}
}
/// Helper holding a (private, public) key pair as byte vectors.
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct HpkeKeyPair {
pub private: HpkePrivateKey,
pub public: Vec<u8>,
}
pub type KemOutput = Vec<u8>;
#[derive(Clone, Debug)]
pub struct ExporterSecret(SecretVLBytes);
impl Deref for ExporterSecret {
type Target = [u8];
fn deref(&self) -> &Self::Target {
self.0.as_slice()
}
}
impl From<Vec<u8>> for ExporterSecret {
fn from(secret: Vec<u8>) -> Self {
Self(secret.into())
}
}
/// A currently unknown ciphersuite.
///
/// Used to accept unknown values, e.g., in `Capabilities`.
#[derive(
Clone,
Copy,
Debug,
PartialEq,
Eq,
Serialize,
Deserialize,
TlsSerialize,
TlsDeserialize,
TlsDeserializeBytes,
TlsSize,
)]
pub struct VerifiableCiphersuite(u16);
impl VerifiableCiphersuite {
pub fn new(value: u16) -> Self {
Self(value)
}
}
impl From<Ciphersuite> for VerifiableCiphersuite {
fn from(value: Ciphersuite) -> Self {
Self(value as u16)
}
}
/// MLS ciphersuites.
#[allow(non_camel_case_types)]
#[allow(clippy::upper_case_acronyms)]
#[derive(
Debug,
Clone,
Copy,
PartialEq,
Eq,
PartialOrd,
Ord,
Hash,
Serialize,
Deserialize,
TlsDeserialize,
TlsDeserializeBytes,
TlsSerialize,
TlsSize,
)]
#[repr(u16)]
pub enum Ciphersuite {
/// DH KEM x25519 | AES-GCM 128 | SHA2-256 | Ed25519
MLS_128_DHKEMX25519_AES128GCM_SHA256_Ed25519 = 0x0001,
/// DH KEM P256 | AES-GCM 128 | SHA2-256 | EcDSA P256
MLS_128_DHKEMP256_AES128GCM_SHA256_P256 = 0x0002,
/// DH KEM x25519 | Chacha20Poly1305 | SHA2-256 | Ed25519
MLS_128_DHKEMX25519_CHACHA20POLY1305_SHA256_Ed25519 = 0x0003,
/// DH KEM x448 | AES-GCM 256 | SHA2-512 | Ed448
MLS_256_DHKEMX448_AES256GCM_SHA512_Ed448 = 0x0004,
/// DH KEM P521 | AES-GCM 256 | SHA2-512 | EcDSA P521
MLS_256_DHKEMP521_AES256GCM_SHA512_P521 = 0x0005,
/// DH KEM x448 | Chacha20Poly1305 | SHA2-512 | Ed448
MLS_256_DHKEMX448_CHACHA20POLY1305_SHA512_Ed448 = 0x0006,
/// DH KEM P384 | AES-GCM 256 | SHA2-384 | EcDSA P384
MLS_256_DHKEMP384_AES256GCM_SHA384_P384 = 0x0007,
/// X-WING KEM draft-01 | Chacha20Poly1305 | SHA2-256 | Ed25519
MLS_256_XWING_CHACHA20POLY1305_SHA256_Ed25519 = 0x004D,
}
impl core::fmt::Display for Ciphersuite {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "{self:?}")
}
}
impl From<Ciphersuite> for u16 {
#[inline(always)]
fn from(s: Ciphersuite) -> u16 {
s as u16
}
}
impl From<&Ciphersuite> for u16 {
#[inline(always)]
fn from(s: &Ciphersuite) -> u16 {
*s as u16
}
}
impl TryFrom<u16> for Ciphersuite {
type Error = tls_codec::Error;
#[inline(always)]
fn try_from(v: u16) -> Result<Self, Self::Error> {
match v {
0x0001 => Ok(Ciphersuite::MLS_128_DHKEMX25519_AES128GCM_SHA256_Ed25519),
0x0002 => Ok(Ciphersuite::MLS_128_DHKEMP256_AES128GCM_SHA256_P256),
0x0003 => Ok(Ciphersuite::MLS_128_DHKEMX25519_CHACHA20POLY1305_SHA256_Ed25519),
0x0004 => Ok(Ciphersuite::MLS_256_DHKEMX448_AES256GCM_SHA512_Ed448),
0x0005 => Ok(Ciphersuite::MLS_256_DHKEMP521_AES256GCM_SHA512_P521),
0x0006 => Ok(Ciphersuite::MLS_256_DHKEMX448_CHACHA20POLY1305_SHA512_Ed448),
0x0007 => Ok(Ciphersuite::MLS_256_DHKEMP384_AES256GCM_SHA384_P384),
0x004D => Ok(Ciphersuite::MLS_256_XWING_CHACHA20POLY1305_SHA256_Ed25519),
_ => Err(Self::Error::DecodingError(format!(
"{v} is not a valid ciphersuite value"
))),
}
}
}
impl From<Ciphersuite> for SignatureScheme {
#[inline(always)]
fn from(ciphersuite_name: Ciphersuite) -> Self {
ciphersuite_name.signature_algorithm()
}
}
impl From<Ciphersuite> for AeadType {
#[inline(always)]
fn from(ciphersuite_name: Ciphersuite) -> Self {
ciphersuite_name.aead_algorithm()
}
}
impl From<Ciphersuite> for HpkeKemType {
#[inline(always)]
fn from(ciphersuite_name: Ciphersuite) -> Self {
ciphersuite_name.hpke_kem_algorithm()
}
}
impl From<Ciphersuite> for HpkeAeadType {
#[inline(always)]
fn from(ciphersuite_name: Ciphersuite) -> Self {
ciphersuite_name.hpke_aead_algorithm()
}
}
impl From<Ciphersuite> for HpkeKdfType {
#[inline(always)]
fn from(ciphersuite_name: Ciphersuite) -> Self {
ciphersuite_name.hpke_kdf_algorithm()
}
}
impl From<Ciphersuite> for HashType {
#[inline(always)]
fn from(ciphersuite_name: Ciphersuite) -> Self {
ciphersuite_name.hash_algorithm()
}
}
impl Ciphersuite {
/// Get the [`HashType`] for this [`Ciphersuite`]
#[inline]
pub const fn hash_algorithm(&self) -> HashType {
match self {
Ciphersuite::MLS_128_DHKEMX25519_AES128GCM_SHA256_Ed25519
| Ciphersuite::MLS_128_DHKEMP256_AES128GCM_SHA256_P256
| Ciphersuite::MLS_128_DHKEMX25519_CHACHA20POLY1305_SHA256_Ed25519
| Ciphersuite::MLS_256_XWING_CHACHA20POLY1305_SHA256_Ed25519 => HashType::Sha2_256,
Ciphersuite::MLS_256_DHKEMP384_AES256GCM_SHA384_P384 => HashType::Sha2_384,
Ciphersuite::MLS_256_DHKEMX448_AES256GCM_SHA512_Ed448
| Ciphersuite::MLS_256_DHKEMP521_AES256GCM_SHA512_P521
| Ciphersuite::MLS_256_DHKEMX448_CHACHA20POLY1305_SHA512_Ed448 => HashType::Sha2_512,
}
}
/// Get the [`SignatureScheme`] for this [`Ciphersuite`].
#[inline]
pub const fn signature_algorithm(&self) -> SignatureScheme {
match self {
Ciphersuite::MLS_128_DHKEMX25519_AES128GCM_SHA256_Ed25519
| Ciphersuite::MLS_128_DHKEMX25519_CHACHA20POLY1305_SHA256_Ed25519
| Ciphersuite::MLS_256_XWING_CHACHA20POLY1305_SHA256_Ed25519 => {
SignatureScheme::ED25519
}
Ciphersuite::MLS_128_DHKEMP256_AES128GCM_SHA256_P256 => {
SignatureScheme::ECDSA_SECP256R1_SHA256
}
Ciphersuite::MLS_256_DHKEMP521_AES256GCM_SHA512_P521 => {
SignatureScheme::ECDSA_SECP521R1_SHA512
}
Ciphersuite::MLS_256_DHKEMX448_AES256GCM_SHA512_Ed448
| Ciphersuite::MLS_256_DHKEMX448_CHACHA20POLY1305_SHA512_Ed448 => {
SignatureScheme::ED448
}
Ciphersuite::MLS_256_DHKEMP384_AES256GCM_SHA384_P384 => {
SignatureScheme::ECDSA_SECP384R1_SHA384
}
}
}
/// Get the [`AeadType`] for this [`Ciphersuite`].
#[inline]
pub const fn aead_algorithm(&self) -> AeadType {
match self {
Ciphersuite::MLS_128_DHKEMX25519_AES128GCM_SHA256_Ed25519
| Ciphersuite::MLS_128_DHKEMP256_AES128GCM_SHA256_P256 => AeadType::Aes128Gcm,
Ciphersuite::MLS_128_DHKEMX25519_CHACHA20POLY1305_SHA256_Ed25519
| Ciphersuite::MLS_256_DHKEMX448_CHACHA20POLY1305_SHA512_Ed448
| Ciphersuite::MLS_256_XWING_CHACHA20POLY1305_SHA256_Ed25519 => {
AeadType::ChaCha20Poly1305
}
Ciphersuite::MLS_256_DHKEMX448_AES256GCM_SHA512_Ed448
| Ciphersuite::MLS_256_DHKEMP521_AES256GCM_SHA512_P521
| Ciphersuite::MLS_256_DHKEMP384_AES256GCM_SHA384_P384 => AeadType::Aes256Gcm,
}
}
/// Get the [`HpkeKdfType`] for this [`Ciphersuite`].
#[inline]
pub const fn hpke_kdf_algorithm(&self) -> HpkeKdfType {
match self {
Ciphersuite::MLS_128_DHKEMX25519_AES128GCM_SHA256_Ed25519
| Ciphersuite::MLS_128_DHKEMP256_AES128GCM_SHA256_P256
| Ciphersuite::MLS_128_DHKEMX25519_CHACHA20POLY1305_SHA256_Ed25519
| Self::MLS_256_XWING_CHACHA20POLY1305_SHA256_Ed25519 => HpkeKdfType::HkdfSha256,
Ciphersuite::MLS_256_DHKEMP384_AES256GCM_SHA384_P384 => HpkeKdfType::HkdfSha384,
Ciphersuite::MLS_256_DHKEMX448_AES256GCM_SHA512_Ed448
| Ciphersuite::MLS_256_DHKEMP521_AES256GCM_SHA512_P521
| Ciphersuite::MLS_256_DHKEMX448_CHACHA20POLY1305_SHA512_Ed448 => {
HpkeKdfType::HkdfSha512
}
}
}
/// Get the [`HpkeKemType`] for this [`Ciphersuite`].
#[inline]
pub const fn hpke_kem_algorithm(&self) -> HpkeKemType {
match self {
Ciphersuite::MLS_128_DHKEMX25519_AES128GCM_SHA256_Ed25519
| Ciphersuite::MLS_128_DHKEMX25519_CHACHA20POLY1305_SHA256_Ed25519 => {
HpkeKemType::DhKem25519
}
Ciphersuite::MLS_128_DHKEMP256_AES128GCM_SHA256_P256 => HpkeKemType::DhKemP256,
Ciphersuite::MLS_256_DHKEMX448_AES256GCM_SHA512_Ed448
| Ciphersuite::MLS_256_DHKEMX448_CHACHA20POLY1305_SHA512_Ed448 => HpkeKemType::DhKem448,
Ciphersuite::MLS_256_DHKEMP384_AES256GCM_SHA384_P384 => HpkeKemType::DhKemP384,
Ciphersuite::MLS_256_DHKEMP521_AES256GCM_SHA512_P521 => HpkeKemType::DhKemP521,
Ciphersuite::MLS_256_XWING_CHACHA20POLY1305_SHA256_Ed25519 => {
HpkeKemType::XWingKemDraft2
}
}
}
/// Get the [`HpkeAeadType`] for this [`Ciphersuite`].
#[inline]
pub const fn hpke_aead_algorithm(&self) -> HpkeAeadType {
match self {
Ciphersuite::MLS_128_DHKEMX25519_AES128GCM_SHA256_Ed25519
| Ciphersuite::MLS_128_DHKEMP256_AES128GCM_SHA256_P256 => HpkeAeadType::AesGcm128,
Ciphersuite::MLS_128_DHKEMX25519_CHACHA20POLY1305_SHA256_Ed25519
| Ciphersuite::MLS_256_XWING_CHACHA20POLY1305_SHA256_Ed25519 => {
HpkeAeadType::ChaCha20Poly1305
}
Ciphersuite::MLS_256_DHKEMX448_AES256GCM_SHA512_Ed448
| Ciphersuite::MLS_256_DHKEMP384_AES256GCM_SHA384_P384
| Ciphersuite::MLS_256_DHKEMP521_AES256GCM_SHA512_P521 => HpkeAeadType::AesGcm256,
Ciphersuite::MLS_256_DHKEMX448_CHACHA20POLY1305_SHA512_Ed448 => {
HpkeAeadType::ChaCha20Poly1305
}
}
}
/// Get the [`HpkeConfig`] for this [`Ciphersuite`].
#[inline]
pub const fn hpke_config(&self) -> HpkeConfig {
HpkeConfig(
self.hpke_kem_algorithm(),
self.hpke_kdf_algorithm(),
self.hpke_aead_algorithm(),
)
}
/// Get the length of the used hash algorithm.
#[inline]
pub const fn hash_length(&self) -> usize {
self.hash_algorithm().size()
}
/// Get the length of the AEAD tag.
#[inline]
pub const fn mac_length(&self) -> usize {
self.aead_algorithm().tag_size()
}
/// Returns the key size of the used AEAD.
#[inline]
pub const fn aead_key_length(&self) -> usize {
self.aead_algorithm().key_size()
}
/// Returns the length of the nonce of the AEAD.
#[inline]
pub const fn aead_nonce_length(&self) -> usize {
self.aead_algorithm().nonce_size()
}
}