35 lines
1.1 KiB
TypeScript
35 lines
1.1 KiB
TypeScript
import { keccak256 } from 'ethereum-cryptography/keccak'
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import { getPublicKey, sign, utils } from 'ethereum-cryptography/secp256k1'
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import { bytesToHex, concatBytes } from 'ethereum-cryptography/utils'
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import { compressPublicKey } from './utils/compress-public-key'
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import { generateUsername } from './utils/generate-username'
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export class Account {
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public privateKey: string
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public publicKey: string
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public chatKey: string
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public username: string
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constructor() {
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const privateKey = utils.randomPrivateKey()
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const publicKey = getPublicKey(privateKey)
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this.privateKey = bytesToHex(privateKey)
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this.publicKey = bytesToHex(publicKey)
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this.chatKey = '0x' + compressPublicKey(this.publicKey)
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this.username = generateUsername('0x' + this.publicKey)
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}
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// sig must be a 65-byte compact ECDSA signature containing the recovery id as the last element.
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sign = async (payload: Uint8Array) => {
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const hash = keccak256(payload)
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const [signature, recoverId] = await sign(hash, this.privateKey, {
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recovered: true,
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der: false,
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})
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return concatBytes(signature, new Uint8Array([recoverId]))
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}
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}
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