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
pub use ecdsa_core::signature::{self, Error};
use super::NistP256;
#[cfg(feature = "ecdsa")]
use {
crate::{AffinePoint, Scalar},
ecdsa_core::hazmat::{SignPrimitive, VerifyPrimitive},
};
pub type Signature = ecdsa_core::Signature<NistP256>;
pub type DerSignature = ecdsa_core::der::Signature<NistP256>;
#[cfg(feature = "ecdsa")]
pub type SigningKey = ecdsa_core::SigningKey<NistP256>;
#[cfg(feature = "ecdsa")]
pub type VerifyingKey = ecdsa_core::VerifyingKey<NistP256>;
#[cfg(feature = "sha256")]
impl ecdsa_core::hazmat::DigestPrimitive for NistP256 {
type Digest = sha2::Sha256;
}
#[cfg(feature = "ecdsa")]
impl SignPrimitive<NistP256> for Scalar {}
#[cfg(feature = "ecdsa")]
impl VerifyPrimitive<NistP256> for AffinePoint {}
#[cfg(all(test, feature = "ecdsa"))]
mod tests {
use crate::{
ecdsa::{
signature::hazmat::{PrehashSigner, PrehashVerifier},
signature::Signer,
Signature, SigningKey, VerifyingKey,
},
test_vectors::ecdsa::ECDSA_TEST_VECTORS,
AffinePoint, BlindedScalar, EncodedPoint, Scalar,
};
use ecdsa_core::hazmat::SignPrimitive;
use elliptic_curve::{
generic_array::GenericArray, group::ff::PrimeField, rand_core::OsRng,
sec1::FromEncodedPoint,
};
use hex_literal::hex;
use sha2::Digest;
#[test]
fn rfc6979() {
let x = &hex!("c9afa9d845ba75166b5c215767b1d6934e50c3db36e89b127b8a622b120f6721");
let signer = SigningKey::from_bytes(x).unwrap();
let signature: Signature = signer.sign(b"sample");
assert_eq!(
signature.to_bytes().as_slice(),
&hex!(
"efd48b2aacb6a8fd1140dd9cd45e81d69d2c877b56aaf991c34d0ea84eaf3716
f7cb1c942d657c41d436c7a1b6e29f65f3e900dbb9aff4064dc4ab2f843acda8"
)
);
let signature: Signature = signer.sign(b"test");
assert_eq!(
signature.to_bytes().as_slice(),
&hex!(
"f1abb023518351cd71d881567b1ea663ed3efcf6c5132b354f28d3b0b7d38367
019f4113742a2b14bd25926b49c649155f267e60d3814b4c0cc84250e46f0083"
)
);
}
#[test]
fn prehash_signer_signing_with_sha384() {
let x = &hex!("c9afa9d845ba75166b5c215767b1d6934e50c3db36e89b127b8a622b120f6721");
let signer = SigningKey::from_bytes(x).unwrap();
let digest = sha2::Sha384::digest(b"test");
let signature: Signature = signer.sign_prehash(&digest).unwrap();
assert_eq!(
signature.to_bytes().as_slice(),
&hex!(
"ebde85f1539af67e70dd7a8a6afeeb332aa7f08f01ebb6ab6e04e2a62d2fef75
871af45800daddf55619b005a601a7a84f544260f1d2625b2ef5aa7a4f4dd76f"
)
);
}
#[test]
fn prehash_signer_verification_with_sha384() {
let verifier = VerifyingKey::from_affine(
AffinePoint::from_encoded_point(&EncodedPoint::from_affine_coordinates(
GenericArray::from_slice(&hex!(
"e0e7b99bc62d8dd67883e39ed9fa0657789c5ff556cc1fd8dd1e2a55e9e3f243"
)),
GenericArray::from_slice(&hex!(
"63fbfd0232b95578075c903a4dbf85ad58f8350516e1ec89b0ee1f5e1362da69"
)),
false,
))
.unwrap(),
)
.unwrap();
let signature = Signature::from_scalars(
GenericArray::clone_from_slice(&hex!(
"f5087878e212b703578f5c66f434883f3ef414dc23e2e8d8ab6a8d159ed5ad83"
)),
GenericArray::clone_from_slice(&hex!(
"306b4c6c20213707982dffbb30fba99b96e792163dd59dbe606e734328dd7c8a"
)),
)
.unwrap();
let result = verifier.verify_prehash(
&hex!("d9c83b92fa0979f4a5ddbd8dd22ab9377801c3c31bf50f932ace0d2146e2574da0d5552dbed4b18836280e9f94558ea6"),
&signature,
);
assert!(result.is_ok());
}
#[test]
fn scalar_blinding() {
let vector = &ECDSA_TEST_VECTORS[0];
let d = Scalar::from_repr(GenericArray::clone_from_slice(vector.d)).unwrap();
let k = Scalar::from_repr(GenericArray::clone_from_slice(vector.k)).unwrap();
let k_blinded = BlindedScalar::new(k, &mut OsRng);
let z = GenericArray::clone_from_slice(vector.m);
let sig = d.try_sign_prehashed(k_blinded, z).unwrap().0;
assert_eq!(vector.r, sig.r().to_bytes().as_slice());
assert_eq!(vector.s, sig.s().to_bytes().as_slice());
}
mod sign {
use crate::{test_vectors::ecdsa::ECDSA_TEST_VECTORS, NistP256};
ecdsa_core::new_signing_test!(NistP256, ECDSA_TEST_VECTORS);
}
mod verify {
use crate::{test_vectors::ecdsa::ECDSA_TEST_VECTORS, NistP256};
ecdsa_core::new_verification_test!(NistP256, ECDSA_TEST_VECTORS);
}
mod wycheproof {
use crate::NistP256;
ecdsa_core::new_wycheproof_test!(wycheproof, "wycheproof", NistP256);
}
}