-
Notifications
You must be signed in to change notification settings - Fork 3
/
Secp256k1.sol
78 lines (68 loc) · 2.4 KB
/
Secp256k1.sol
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
// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.16;
import {Script} from "forge-std/Script.sol";
import {console2 as console} from "forge-std/console2.sol";
import {Secp256k1Offchain} from "offchain/Secp256k1Offchain.sol";
import {Secp256k1, SecretKey, PublicKey} from "src/Secp256k1.sol";
import {Points, Point, ProjectivePoint} from "src/arithmetic/Points.sol";
/**
* @title Secp256k1Example
*
* @dev Run via:
*
* ```bash
* $ forge script examples/Secp256k1.sol:Secp256k1Example -vvvv
* ```
*
* @dev Note that some code is commented out to reduce compiler warnings
* regarding unused variables.
*/
contract Secp256k1Example is Script {
using Secp256k1Offchain for SecretKey;
using Secp256k1Offchain for PublicKey;
using Secp256k1 for SecretKey;
using Secp256k1 for PublicKey;
using Points for Point;
function run() public {
// Create new cryptographically sound secret key.
SecretKey sk = Secp256k1Offchain.newSecretKey();
// assert(sk.isValid());
console.log("Created new secret key:");
console.log(sk.asUint());
console.log("");
// Derive public key.
PublicKey memory pk = sk.toPublicKey();
// assert(pk.isValid());
console.log("Derived public key:");
console.log(pk.toString());
console.log("");
// Arithmetic types.
// into___() -> overwrites memory, no allocation / memory expansion cost
// to___() -> allocates new memory, may has expansion cost
/*
Point memory point = pk.intoPoint();
ProjectivePoint memory jPoint = pk.toProjectivePoint();
*/
// Derive common constructs.
address addr1 = sk.toAddress();
address addr2 = pk.toAddress();
assert(addr1 == addr2);
/*
bytes32 digest = pk.toHash();
uint yParity = pk.yParity();
*/
console.log("Derived address:");
console.log(addr1);
console.log("");
// Serialization.
console.log("ABI serialized public key:");
console.logBytes(pk.toBytes());
console.log("");
console.log("SEC encoded public key:");
console.logBytes(pk.intoPoint().toEncoded());
console.log("");
console.log("SEC compressed encoded public key:");
console.logBytes(pk.intoPoint().toCompressedEncoded());
console.log("");
}
}