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Concatenate signature to have enough entropy for eth-crypto

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This commit is contained in:
Franck Royer 2021-06-21 13:51:11 +10:00
parent af2b2691f1
commit 85b4879410
No known key found for this signature in database
GPG Key ID: A82ED75A8DFC50A4
1 changed files with 3 additions and 2 deletions
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5
examples/eth-dm/src/crypto.ts
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@ -1,7 +1,6 @@
import '@ethersproject/shims'; import '@ethersproject/shims';
import * as EthCrypto from 'eth-crypto'; import * as EthCrypto from 'eth-crypto';
import { toUtf8Bytes } from '@ethersproject/strings';
import { ethers } from 'ethers'; import { ethers } from 'ethers';
import { Signer } from '@ethersproject/abstract-signer'; import { Signer } from '@ethersproject/abstract-signer';
import { PublicKeyMessage } from './messages'; import { PublicKeyMessage } from './messages';
@ -24,7 +23,9 @@ export async function generateEthDmKeyPair(
web3Signer: Signer web3Signer: Signer
): Promise<KeyPair> { ): Promise<KeyPair> {
const signature = await web3Signer.signMessage(Salt); const signature = await web3Signer.signMessage(Salt);
const entropy = Buffer.from(signature, 'hex'); // Need to remove '0x' prefix to allow buffer to decode the hex string.
const sigBuf = Buffer.from(signature.slice(2), 'hex');
const entropy = Buffer.concat([sigBuf, sigBuf]);
const keys = EthCrypto.createIdentity(entropy); const keys = EthCrypto.createIdentity(entropy);
return keys; return keys;
} }