xdid_method_key/keys/
p384.rs

1use jose_jwk::Jwk;
2use p256::elliptic_curve::rand_core::OsRng;
3use p384::{
4    SecretKey,
5    elliptic_curve::sec1::{FromEncodedPoint, ToEncodedPoint},
6};
7use ring::{
8    rand::SystemRandom,
9    signature::{ECDSA_P384_SHA384_ASN1_SIGNING, EcdsaKeyPair},
10};
11
12use super::{DidKeyPair, KeyParser, Multicodec, PublicKey, SignError, Signer, WithMulticodec};
13
14#[derive(Clone, PartialEq, Eq)]
15pub struct P384KeyPair(SecretKey);
16
17impl DidKeyPair for P384KeyPair {
18    fn generate() -> Self {
19        let mut rng = OsRng;
20        let secret = SecretKey::random(&mut rng);
21        Self(secret)
22    }
23
24    fn public(&self) -> impl PublicKey {
25        P384PublicKey(self.0.public_key())
26    }
27    fn public_bytes(&self) -> Box<[u8]> {
28        self.0.public_key().to_sec1_bytes()
29    }
30    fn secret_bytes(&self) -> Box<[u8]> {
31        self.0.to_bytes().to_vec().into()
32    }
33}
34
35impl Signer for P384KeyPair {
36    fn sign(&self, message: &[u8]) -> Result<Vec<u8>, SignError> {
37        let rng = SystemRandom::new();
38
39        let signer = EcdsaKeyPair::from_private_key_and_public_key(
40            &ECDSA_P384_SHA384_ASN1_SIGNING,
41            &self.secret_bytes(),
42            &self.public_bytes(),
43            &rng,
44        )
45        .unwrap();
46
47        signer
48            .sign(&rng, message)
49            .map(|v| v.as_ref().to_vec())
50            .map_err(|_| SignError::SigningFailed)
51    }
52}
53
54#[derive(Clone, PartialEq, Eq)]
55struct P384PublicKey(p384::PublicKey);
56
57impl PublicKey for P384PublicKey {
58    fn as_did_bytes(&self) -> Box<[u8]> {
59        self.0.to_encoded_point(true).as_bytes().into()
60    }
61
62    fn to_jwk(&self) -> Jwk {
63        let jwk_str = self.0.to_jwk_string();
64        serde_json::from_str(&jwk_str).unwrap()
65    }
66}
67
68impl WithMulticodec for P384PublicKey {
69    fn codec(&self) -> Box<dyn Multicodec> {
70        Box::new(P384Codec)
71    }
72}
73
74pub(crate) struct P384KeyParser;
75
76impl KeyParser for P384KeyParser {
77    fn parse(&self, public_key: Vec<u8>) -> Box<dyn PublicKey> {
78        let point = p384::EncodedPoint::from_bytes(public_key).unwrap();
79        let key = p384::PublicKey::from_encoded_point(&point).unwrap();
80        Box::new(P384PublicKey(key))
81    }
82}
83
84impl WithMulticodec for P384KeyParser {
85    fn codec(&self) -> Box<dyn Multicodec> {
86        Box::new(P384Codec)
87    }
88}
89
90struct P384Codec;
91
92impl Multicodec for P384Codec {
93    fn code_u64(&self) -> u64 {
94        0x1201
95    }
96}
97
98#[cfg(test)]
99mod tests {
100    use ring::signature::{ECDSA_P384_SHA384_ASN1, VerificationAlgorithm};
101
102    use crate::parser::DidKeyParser;
103
104    use super::*;
105
106    #[test]
107    fn test_display() {
108        let pair = P384KeyPair::generate();
109        let did = pair.public().to_did();
110
111        let did_str = did.to_string();
112        println!("{}", did_str);
113        assert!(did_str.starts_with("did:key:z82"));
114    }
115
116    #[test]
117    fn test_jwk() {
118        let pair = P384KeyPair::generate();
119        let _ = pair.public().to_jwk();
120    }
121
122    #[test]
123    fn test_parse() {
124        let pair = P384KeyPair::generate();
125        let did = pair.public().to_did();
126
127        let parser = DidKeyParser::default();
128        let _ = parser.parse(&did).unwrap();
129    }
130
131    #[test]
132    fn test_sign() {
133        let pair = P384KeyPair::generate();
134
135        let msg = vec![0, 1, 2, 3, 4, 5, 6, 7, 8];
136        let signature = pair.sign(&msg).unwrap();
137
138        assert!(
139            ECDSA_P384_SHA384_ASN1
140                .verify(
141                    pair.public_bytes().to_vec().as_slice().into(),
142                    msg.as_slice().into(),
143                    signature.as_slice().into()
144                )
145                .is_ok()
146        );
147    }
148}
xdid_method_key/keys/p384.rs

xdid_method_key/keys/
p384.rs
