commonware_cryptography/ed25519/
scheme.rs

1use crate::{Array, BatchScheme, Error, Signer, Specification, Verifier};
2use bytes::{Buf, BufMut};
3use commonware_codec::{Codec, Error as CodecError, SizedCodec};
4use commonware_utils::{hex, union_unique};
5use ed25519_consensus::{self, VerificationKey};
6use rand::{CryptoRng, Rng, RngCore};
7use std::borrow::Cow;
8use std::fmt::{Debug, Display};
9use std::hash::{Hash, Hasher};
10use std::ops::Deref;
11
12const CURVE_NAME: &str = "ed25519";
13const PRIVATE_KEY_LENGTH: usize = 32;
14const PUBLIC_KEY_LENGTH: usize = 32;
15const SIGNATURE_LENGTH: usize = 64;
16
17/// Ed25519 Signer.
18#[derive(Clone)]
19pub struct Ed25519 {
20    signer: ed25519_consensus::SigningKey,
21    verifier: ed25519_consensus::VerificationKey,
22}
23
24impl Specification for Ed25519 {
25    type PublicKey = PublicKey;
26    type Signature = Signature;
27}
28
29impl Verifier for Ed25519 {
30    fn verify(
31        namespace: Option<&[u8]>,
32        message: &[u8],
33        public_key: &Self::PublicKey,
34        signature: &Self::Signature,
35    ) -> bool {
36        match namespace {
37            Some(namespace) => {
38                let payload = union_unique(namespace, message);
39                public_key
40                    .key
41                    .verify(&signature.signature, &payload)
42                    .is_ok()
43            }
44            None => public_key.key.verify(&signature.signature, message).is_ok(),
45        }
46    }
47}
48
49impl Signer for Ed25519 {
50    type PrivateKey = PrivateKey;
51
52    fn new<R: CryptoRng + Rng>(r: &mut R) -> Self {
53        let signer = ed25519_consensus::SigningKey::new(r);
54        let verifier = signer.verification_key();
55        Self { signer, verifier }
56    }
57
58    fn from(private_key: PrivateKey) -> Option<Self> {
59        let signer = private_key.key;
60        let verifier = signer.verification_key();
61        Some(Self { signer, verifier })
62    }
63
64    fn private_key(&self) -> PrivateKey {
65        PrivateKey::from(self.signer.clone())
66    }
67
68    fn public_key(&self) -> PublicKey {
69        PublicKey::from(self.verifier)
70    }
71
72    fn sign(&mut self, namespace: Option<&[u8]>, message: &[u8]) -> Signature {
73        let sig = match namespace {
74            Some(namespace) => self.signer.sign(&union_unique(namespace, message)),
75            None => self.signer.sign(message),
76        };
77        Signature::from(sig)
78    }
79}
80
81/// Ed25519 Batch Verifier.
82pub struct Ed25519Batch {
83    verifier: ed25519_consensus::batch::Verifier,
84}
85
86impl Specification for Ed25519Batch {
87    type PublicKey = PublicKey;
88    type Signature = Signature;
89}
90
91impl BatchScheme for Ed25519Batch {
92    fn new() -> Self {
93        Ed25519Batch {
94            verifier: ed25519_consensus::batch::Verifier::new(),
95        }
96    }
97
98    fn add(
99        &mut self,
100        namespace: Option<&[u8]>,
101        message: &[u8],
102        public_key: &Self::PublicKey,
103        signature: &Self::Signature,
104    ) -> bool {
105        let payload = match namespace {
106            Some(namespace) => Cow::Owned(union_unique(namespace, message)),
107            None => Cow::Borrowed(message),
108        };
109        let item = ed25519_consensus::batch::Item::from((
110            public_key.key.into(),
111            signature.signature,
112            &payload,
113        ));
114        self.verifier.queue(item);
115        true
116    }
117
118    fn verify<R: RngCore + CryptoRng>(self, rng: &mut R) -> bool {
119        self.verifier.verify(rng).is_ok()
120    }
121}
122
123/// Ed25519 Private Key.
124#[derive(Clone)]
125pub struct PrivateKey {
126    raw: [u8; PRIVATE_KEY_LENGTH],
127    key: ed25519_consensus::SigningKey,
128}
129
130impl Codec for PrivateKey {
131    fn write(&self, buf: &mut impl BufMut) {
132        self.raw.write(buf);
133    }
134
135    fn read(buf: &mut impl Buf) -> Result<Self, CodecError> {
136        Self::read_from(buf).map_err(|err| CodecError::Wrapped(CURVE_NAME, err.into()))
137    }
138
139    fn len_encoded(&self) -> usize {
140        PRIVATE_KEY_LENGTH
141    }
142}
143
144impl SizedCodec for PrivateKey {
145    const LEN_ENCODED: usize = PRIVATE_KEY_LENGTH;
146}
147
148impl Array for PrivateKey {
149    type Error = Error;
150}
151
152impl Eq for PrivateKey {}
153
154impl Hash for PrivateKey {
155    fn hash<H: Hasher>(&self, state: &mut H) {
156        self.raw.hash(state);
157    }
158}
159
160impl PartialEq for PrivateKey {
161    fn eq(&self, other: &Self) -> bool {
162        self.raw == other.raw
163    }
164}
165
166impl Ord for PrivateKey {
167    fn cmp(&self, other: &Self) -> std::cmp::Ordering {
168        self.raw.cmp(&other.raw)
169    }
170}
171
172impl PartialOrd for PrivateKey {
173    fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
174        Some(self.cmp(other))
175    }
176}
177
178impl AsRef<[u8]> for PrivateKey {
179    fn as_ref(&self) -> &[u8] {
180        &self.raw
181    }
182}
183
184impl Deref for PrivateKey {
185    type Target = [u8];
186    fn deref(&self) -> &[u8] {
187        &self.raw
188    }
189}
190
191impl From<ed25519_consensus::SigningKey> for PrivateKey {
192    fn from(key: ed25519_consensus::SigningKey) -> Self {
193        let raw = key.to_bytes();
194        Self { raw, key }
195    }
196}
197
198impl TryFrom<&[u8]> for PrivateKey {
199    type Error = Error;
200    fn try_from(value: &[u8]) -> Result<Self, Self::Error> {
201        let raw: [u8; PRIVATE_KEY_LENGTH] = value
202            .try_into()
203            .map_err(|_| Error::InvalidPrivateKeyLength)?;
204        let key = ed25519_consensus::SigningKey::from(raw);
205        Ok(Self { raw, key })
206    }
207}
208
209impl TryFrom<&Vec<u8>> for PrivateKey {
210    type Error = Error;
211    fn try_from(value: &Vec<u8>) -> Result<Self, Self::Error> {
212        Self::try_from(value.as_slice())
213    }
214}
215
216impl TryFrom<Vec<u8>> for PrivateKey {
217    type Error = Error;
218    fn try_from(value: Vec<u8>) -> Result<Self, Self::Error> {
219        Self::try_from(value.as_slice())
220    }
221}
222
223impl Debug for PrivateKey {
224    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
225        write!(f, "{}", hex(&self.raw))
226    }
227}
228
229impl Display for PrivateKey {
230    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
231        write!(f, "{}", hex(&self.raw))
232    }
233}
234
235/// Ed25519 Public Key.
236#[derive(Clone, Eq, PartialEq, Ord, PartialOrd, Hash)]
237pub struct PublicKey {
238    raw: [u8; PUBLIC_KEY_LENGTH],
239    key: ed25519_consensus::VerificationKey,
240}
241
242impl Codec for PublicKey {
243    fn write(&self, buf: &mut impl BufMut) {
244        self.raw.write(buf);
245    }
246
247    fn read(buf: &mut impl Buf) -> Result<Self, CodecError> {
248        Self::read_from(buf).map_err(|err| CodecError::Wrapped(CURVE_NAME, err.into()))
249    }
250
251    fn len_encoded(&self) -> usize {
252        PUBLIC_KEY_LENGTH
253    }
254}
255
256impl SizedCodec for PublicKey {
257    const LEN_ENCODED: usize = PUBLIC_KEY_LENGTH;
258}
259
260impl Array for PublicKey {
261    type Error = Error;
262}
263
264impl AsRef<[u8]> for PublicKey {
265    fn as_ref(&self) -> &[u8] {
266        &self.raw
267    }
268}
269
270impl Deref for PublicKey {
271    type Target = [u8];
272    fn deref(&self) -> &[u8] {
273        &self.raw
274    }
275}
276
277impl From<VerificationKey> for PublicKey {
278    fn from(key: VerificationKey) -> Self {
279        let raw = key.to_bytes();
280        Self { raw, key }
281    }
282}
283
284impl TryFrom<&[u8]> for PublicKey {
285    type Error = Error;
286    fn try_from(value: &[u8]) -> Result<Self, Self::Error> {
287        let raw: [u8; PUBLIC_KEY_LENGTH] = value
288            .try_into()
289            .map_err(|_| Error::InvalidPublicKeyLength)?;
290        let key = VerificationKey::try_from(value).map_err(|_| Error::InvalidPublicKey)?;
291        Ok(Self { raw, key })
292    }
293}
294
295impl TryFrom<&Vec<u8>> for PublicKey {
296    type Error = Error;
297    fn try_from(value: &Vec<u8>) -> Result<Self, Self::Error> {
298        Self::try_from(value.as_slice())
299    }
300}
301
302impl TryFrom<Vec<u8>> for PublicKey {
303    type Error = Error;
304    fn try_from(value: Vec<u8>) -> Result<Self, Self::Error> {
305        Self::try_from(value.as_slice())
306    }
307}
308
309impl Debug for PublicKey {
310    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
311        write!(f, "{}", hex(&self.raw))
312    }
313}
314
315impl Display for PublicKey {
316    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
317        write!(f, "{}", hex(&self.raw))
318    }
319}
320
321/// Ed25519 Signature.
322#[derive(Clone, Eq, PartialEq)]
323pub struct Signature {
324    raw: [u8; SIGNATURE_LENGTH],
325    signature: ed25519_consensus::Signature,
326}
327
328impl Codec for Signature {
329    fn write(&self, buf: &mut impl BufMut) {
330        self.raw.write(buf);
331    }
332
333    fn read(buf: &mut impl Buf) -> Result<Self, CodecError> {
334        Self::read_from(buf).map_err(|err| CodecError::Wrapped(CURVE_NAME, err.into()))
335    }
336
337    fn len_encoded(&self) -> usize {
338        SIGNATURE_LENGTH
339    }
340}
341
342impl SizedCodec for Signature {
343    const LEN_ENCODED: usize = SIGNATURE_LENGTH;
344}
345
346impl Array for Signature {
347    type Error = Error;
348}
349
350impl Hash for Signature {
351    fn hash<H: Hasher>(&self, state: &mut H) {
352        self.raw.hash(state);
353    }
354}
355
356impl Ord for Signature {
357    fn cmp(&self, other: &Self) -> std::cmp::Ordering {
358        self.raw.cmp(&other.raw)
359    }
360}
361
362impl PartialOrd for Signature {
363    fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
364        Some(self.cmp(other))
365    }
366}
367
368impl AsRef<[u8]> for Signature {
369    fn as_ref(&self) -> &[u8] {
370        &self.raw
371    }
372}
373
374impl Deref for Signature {
375    type Target = [u8];
376    fn deref(&self) -> &[u8] {
377        &self.raw
378    }
379}
380
381impl From<ed25519_consensus::Signature> for Signature {
382    fn from(value: ed25519_consensus::Signature) -> Self {
383        let raw = value.to_bytes();
384        Self {
385            raw,
386            signature: value,
387        }
388    }
389}
390
391impl TryFrom<&[u8]> for Signature {
392    type Error = Error;
393    fn try_from(value: &[u8]) -> Result<Self, Self::Error> {
394        let raw: [u8; SIGNATURE_LENGTH] = value
395            .try_into()
396            .map_err(|_| Error::InvalidSignatureLength)?;
397        let signature = ed25519_consensus::Signature::from(raw);
398        Ok(Self { raw, signature })
399    }
400}
401
402impl TryFrom<&Vec<u8>> for Signature {
403    type Error = Error;
404    fn try_from(value: &Vec<u8>) -> Result<Self, Self::Error> {
405        Self::try_from(value.as_slice())
406    }
407}
408
409impl TryFrom<Vec<u8>> for Signature {
410    type Error = Error;
411    fn try_from(value: Vec<u8>) -> Result<Self, Self::Error> {
412        Self::try_from(value.as_slice())
413    }
414}
415
416impl Debug for Signature {
417    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
418        write!(f, "{}", hex(&self.raw))
419    }
420}
421
422impl Display for Signature {
423    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
424        write!(f, "{}", hex(&self.raw))
425    }
426}
427
428/// Test vectors sourced from https://datatracker.ietf.org/doc/html/rfc8032#section-7.1.
429#[cfg(test)]
430mod tests {
431    use super::*;
432    use rand::rngs::OsRng;
433
434    fn test_sign_and_verify(
435        private_key: PrivateKey,
436        public_key: PublicKey,
437        message: &[u8],
438        signature: Signature,
439    ) {
440        let mut signer = <Ed25519 as Signer>::from(private_key).unwrap();
441        let computed_signature = signer.sign(None, message);
442        assert_eq!(computed_signature, signature);
443        assert!(Ed25519::verify(
444            None,
445            message,
446            &PublicKey::try_from(public_key.to_vec()).unwrap(),
447            &computed_signature
448        ));
449    }
450
451    fn parse_private_key(private_key: &str) -> PrivateKey {
452        PrivateKey::try_from(commonware_utils::from_hex_formatted(private_key).unwrap()).unwrap()
453    }
454
455    fn parse_public_key(public_key: &str) -> PublicKey {
456        PublicKey::try_from(commonware_utils::from_hex_formatted(public_key).unwrap()).unwrap()
457    }
458
459    fn parse_signature(signature: &str) -> Signature {
460        Signature::try_from(commonware_utils::from_hex_formatted(signature).unwrap()).unwrap()
461    }
462
463    fn vector_1() -> (PrivateKey, PublicKey, Vec<u8>, Signature) {
464        (
465            // secret key
466            parse_private_key(
467                "
468                9d61b19deffd5a60ba844af492ec2cc4
469                4449c5697b326919703bac031cae7f60
470                ",
471            ),
472            // public key
473            parse_public_key(
474                "
475                d75a980182b10ab7d54bfed3c964073a
476                0ee172f3daa62325af021a68f707511a
477                ",
478            ),
479            // message
480            b"".to_vec(),
481            // signature
482            parse_signature(
483                "
484                e5564300c360ac729086e2cc806e828a
485                84877f1eb8e5d974d873e06522490155
486                5fb8821590a33bacc61e39701cf9b46b
487                d25bf5f0595bbe24655141438e7a100b
488                ",
489            ),
490        )
491    }
492
493    fn vector_2() -> (PrivateKey, PublicKey, Vec<u8>, Signature) {
494        (
495            // secret key
496            parse_private_key(
497                "
498                4ccd089b28ff96da9db6c346ec114e0f
499                5b8a319f35aba624da8cf6ed4fb8a6fb
500                ",
501            ),
502            // public key
503            parse_public_key(
504                "
505                3d4017c3e843895a92b70aa74d1b7ebc
506                9c982ccf2ec4968cc0cd55f12af4660c
507                ",
508            ),
509            // message
510            [0x72].to_vec(),
511            // signature
512            parse_signature(
513                "
514                92a009a9f0d4cab8720e820b5f642540
515                a2b27b5416503f8fb3762223ebdb69da
516                085ac1e43e15996e458f3613d0f11d8c
517                387b2eaeb4302aeeb00d291612bb0c00
518                ",
519            ),
520        )
521    }
522
523    #[test]
524    fn test_codec_private_key() {
525        let private_key = parse_private_key(
526            "
527            9d61b19deffd5a60ba844af492ec2cc4
528            4449c5697b326919703bac031cae7f60
529            ",
530        );
531        let encoded = private_key.encode();
532        assert_eq!(encoded.len(), PRIVATE_KEY_LENGTH);
533        let decoded = PrivateKey::decode(encoded).unwrap();
534        assert_eq!(private_key, decoded);
535    }
536
537    #[test]
538    fn test_codec_public_key() {
539        let public_key = parse_public_key(
540            "
541            d75a980182b10ab7d54bfed3c964073a
542            0ee172f3daa62325af021a68f707511a
543            ",
544        );
545        let encoded = public_key.encode();
546        assert_eq!(encoded.len(), PUBLIC_KEY_LENGTH);
547        let decoded = PublicKey::decode(encoded).unwrap();
548        assert_eq!(public_key, decoded);
549    }
550
551    #[test]
552    fn test_codec_signature() {
553        let signature = parse_signature(
554            "
555            e5564300c360ac729086e2cc806e828a
556            84877f1eb8e5d974d873e06522490155
557            5fb8821590a33bacc61e39701cf9b46b
558            d25bf5f0595bbe24655141438e7a100b
559            ",
560        );
561        let encoded = signature.encode();
562        assert_eq!(encoded.len(), SIGNATURE_LENGTH);
563        let decoded = Signature::decode(encoded).unwrap();
564        assert_eq!(signature, decoded);
565    }
566
567    #[test]
568    fn rfc8032_test_vector_1() {
569        let (private_key, public_key, message, signature) = vector_1();
570        test_sign_and_verify(private_key, public_key, &message, signature)
571    }
572
573    // sanity check the test infra rejects bad signatures
574    #[test]
575    #[should_panic]
576    fn bad_signature() {
577        let (private_key, public_key, message, _) = vector_1();
578        let mut signer = <Ed25519 as Signer>::new(&mut OsRng);
579        let bad_signature = signer.sign(None, message.as_ref());
580        test_sign_and_verify(private_key, public_key, &message, bad_signature);
581    }
582
583    // sanity check the test infra rejects non-matching messages
584    #[test]
585    #[should_panic]
586    fn different_message() {
587        let (private_key, public_key, _, signature) = vector_1();
588        let different_message = b"this is a different message".to_vec();
589        test_sign_and_verify(private_key, public_key, &different_message, signature);
590    }
591
592    #[test]
593    fn rfc8032_test_vector_2() {
594        let (private_key, public_key, message, signature) = vector_2();
595        test_sign_and_verify(private_key, public_key, &message, signature)
596    }
597
598    #[test]
599    fn rfc8032_test_vector_3() {
600        let private_key = parse_private_key(
601            "
602            c5aa8df43f9f837bedb7442f31dcb7b1
603            66d38535076f094b85ce3a2e0b4458f7
604            ",
605        );
606        let public_key = parse_public_key(
607            "
608            fc51cd8e6218a1a38da47ed00230f058
609            0816ed13ba3303ac5deb911548908025
610            ",
611        );
612        let message: [u8; 2] = [0xaf, 0x82];
613        let signature = parse_signature(
614            "
615            6291d657deec24024827e69c3abe01a3
616            0ce548a284743a445e3680d7db5ac3ac
617            18ff9b538d16f290ae67f760984dc659
618            4a7c15e9716ed28dc027beceea1ec40a
619            ",
620        );
621        test_sign_and_verify(private_key, public_key, &message, signature)
622    }
623
624    #[test]
625    fn rfc8032_test_vector_1024() {
626        let private_key = parse_private_key(
627            "
628            f5e5767cf153319517630f226876b86c
629            8160cc583bc013744c6bf255f5cc0ee5
630            ",
631        );
632        let public_key = parse_public_key(
633            "
634            278117fc144c72340f67d0f2316e8386
635            ceffbf2b2428c9c51fef7c597f1d426e
636            ",
637        );
638        let message = commonware_utils::from_hex_formatted(
639            "
640            08b8b2b733424243760fe426a4b54908
641            632110a66c2f6591eabd3345e3e4eb98
642            fa6e264bf09efe12ee50f8f54e9f77b1
643            e355f6c50544e23fb1433ddf73be84d8
644            79de7c0046dc4996d9e773f4bc9efe57
645            38829adb26c81b37c93a1b270b20329d
646            658675fc6ea534e0810a4432826bf58c
647            941efb65d57a338bbd2e26640f89ffbc
648            1a858efcb8550ee3a5e1998bd177e93a
649            7363c344fe6b199ee5d02e82d522c4fe
650            ba15452f80288a821a579116ec6dad2b
651            3b310da903401aa62100ab5d1a36553e
652            06203b33890cc9b832f79ef80560ccb9
653            a39ce767967ed628c6ad573cb116dbef
654            efd75499da96bd68a8a97b928a8bbc10
655            3b6621fcde2beca1231d206be6cd9ec7
656            aff6f6c94fcd7204ed3455c68c83f4a4
657            1da4af2b74ef5c53f1d8ac70bdcb7ed1
658            85ce81bd84359d44254d95629e9855a9
659            4a7c1958d1f8ada5d0532ed8a5aa3fb2
660            d17ba70eb6248e594e1a2297acbbb39d
661            502f1a8c6eb6f1ce22b3de1a1f40cc24
662            554119a831a9aad6079cad88425de6bd
663            e1a9187ebb6092cf67bf2b13fd65f270
664            88d78b7e883c8759d2c4f5c65adb7553
665            878ad575f9fad878e80a0c9ba63bcbcc
666            2732e69485bbc9c90bfbd62481d9089b
667            eccf80cfe2df16a2cf65bd92dd597b07
668            07e0917af48bbb75fed413d238f5555a
669            7a569d80c3414a8d0859dc65a46128ba
670            b27af87a71314f318c782b23ebfe808b
671            82b0ce26401d2e22f04d83d1255dc51a
672            ddd3b75a2b1ae0784504df543af8969b
673            e3ea7082ff7fc9888c144da2af58429e
674            c96031dbcad3dad9af0dcbaaaf268cb8
675            fcffead94f3c7ca495e056a9b47acdb7
676            51fb73e666c6c655ade8297297d07ad1
677            ba5e43f1bca32301651339e22904cc8c
678            42f58c30c04aafdb038dda0847dd988d
679            cda6f3bfd15c4b4c4525004aa06eeff8
680            ca61783aacec57fb3d1f92b0fe2fd1a8
681            5f6724517b65e614ad6808d6f6ee34df
682            f7310fdc82aebfd904b01e1dc54b2927
683            094b2db68d6f903b68401adebf5a7e08
684            d78ff4ef5d63653a65040cf9bfd4aca7
685            984a74d37145986780fc0b16ac451649
686            de6188a7dbdf191f64b5fc5e2ab47b57
687            f7f7276cd419c17a3ca8e1b939ae49e4
688            88acba6b965610b5480109c8b17b80e1
689            b7b750dfc7598d5d5011fd2dcc5600a3
690            2ef5b52a1ecc820e308aa342721aac09
691            43bf6686b64b2579376504ccc493d97e
692            6aed3fb0f9cd71a43dd497f01f17c0e2
693            cb3797aa2a2f256656168e6c496afc5f
694            b93246f6b1116398a346f1a641f3b041
695            e989f7914f90cc2c7fff357876e506b5
696            0d334ba77c225bc307ba537152f3f161
697            0e4eafe595f6d9d90d11faa933a15ef1
698            369546868a7f3a45a96768d40fd9d034
699            12c091c6315cf4fde7cb68606937380d
700            b2eaaa707b4c4185c32eddcdd306705e
701            4dc1ffc872eeee475a64dfac86aba41c
702            0618983f8741c5ef68d3a101e8a3b8ca
703            c60c905c15fc910840b94c00a0b9d0
704            ",
705        )
706        .unwrap();
707        let signature = parse_signature(
708            "
709            0aab4c900501b3e24d7cdf4663326a3a
710            87df5e4843b2cbdb67cbf6e460fec350
711            aa5371b1508f9f4528ecea23c436d94b
712            5e8fcd4f681e30a6ac00a9704a188a03
713            ",
714        );
715        test_sign_and_verify(private_key, public_key, &message, signature)
716    }
717
718    #[test]
719    fn rfc8032_test_vector_sha() {
720        let private_key = commonware_utils::from_hex_formatted(
721            "
722            833fe62409237b9d62ec77587520911e
723            9a759cec1d19755b7da901b96dca3d42
724            ",
725        )
726        .unwrap();
727        let public_key = commonware_utils::from_hex_formatted(
728            "
729            ec172b93ad5e563bf4932c70e1245034
730            c35467ef2efd4d64ebf819683467e2bf
731            ",
732        )
733        .unwrap();
734        let message = commonware_utils::from_hex_formatted(
735            "
736            ddaf35a193617abacc417349ae204131
737            12e6fa4e89a97ea20a9eeee64b55d39a
738            2192992a274fc1a836ba3c23a3feebbd
739            454d4423643ce80e2a9ac94fa54ca49f
740            ",
741        )
742        .unwrap();
743        let signature = commonware_utils::from_hex_formatted(
744            "
745            dc2a4459e7369633a52b1bf277839a00
746            201009a3efbf3ecb69bea2186c26b589
747            09351fc9ac90b3ecfdfbc7c66431e030
748            3dca179c138ac17ad9bef1177331a704
749            ",
750        )
751        .unwrap();
752        test_sign_and_verify(
753            PrivateKey::try_from(private_key).unwrap(),
754            PublicKey::try_from(public_key).unwrap(),
755            &message,
756            Signature::try_from(signature).unwrap(),
757        )
758    }
759
760    #[test]
761    fn batch_verify_valid() {
762        let v1 = vector_1();
763        let v2 = vector_2();
764        let mut batch = Ed25519Batch::new();
765        assert!(batch.add(None, &v1.2, &v1.1, &v1.3));
766        assert!(batch.add(None, &v2.2, &v2.1, &v2.3));
767        assert!(batch.verify(&mut rand::thread_rng()));
768    }
769
770    #[test]
771    fn batch_verify_invalid() {
772        let v1 = vector_1();
773        let v2 = vector_2();
774        let mut bad_signature = v2.3.to_vec();
775        bad_signature[3] = 0xff;
776
777        let mut batch = Ed25519Batch::new();
778        assert!(batch.add(None, &v1.2, &v1.1, &v1.3));
779        assert!(batch.add(
780            None,
781            &v2.2,
782            &v2.1,
783            &Signature::try_from(bad_signature).unwrap()
784        ));
785        assert!(!batch.verify(&mut rand::thread_rng()));
786    }
787}
commonware_cryptography/ed25519/scheme.rs

commonware_cryptography/ed25519/
scheme.rs
