Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 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 | 3x 3x 5x 5x 5x 2x 2x 2x 2x 2x 2x 2x 1x 1x | import { Signer, Wallet } from "ethers";
import {
SigningKey,
computeAddress,
joinSignature,
keccak256,
recoverPublicKey,
toUtf8Bytes,
verifyMessage,
} from "ethers/lib/utils";
export class UniversalSigner {
static getDigestForData(data: unknown) {
const message = JSON.stringify(data);
const digest = keccak256(toUtf8Bytes(message));
return digest;
}
static signStringifiableData(data: unknown, privateKey: string): string {
const digest = UniversalSigner.getDigestForData(data);
const signingKey = new SigningKey(privateKey);
const fullSignature = signingKey.signDigest(digest);
return joinSignature(fullSignature);
}
static recoverSigner(data: unknown, signature: string) {
const digest = UniversalSigner.getDigestForData(data);
const publicKey = recoverPublicKey(digest, signature);
return computeAddress(publicKey);
}
static signWithEthereumHashMessage(
signerOrWallet: Signer | Wallet,
message: string
): Promise<string> {
return signerOrWallet.signMessage(message);
}
static recoverAddressFromEthereumHashMessage(
message: string,
signature: string
): string {
return verifyMessage(message, signature);
}
}
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