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add private key to address function

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Pavel Prichodko 2022-06-02 12:10:35 +02:00 committed by Felicio Mununga
parent 9227a83810
commit 6fb97a5614
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2 changed files with 23 additions and 0 deletions
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10
packages/status-js/src/utils/private-key-to-address.test.ts Normal file
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import { privateKeyToAddress } from './private-key-to-address'
describe('privateKeyToAddress', () => {
it('should return public address', () => {
const privateKey =
'0x348ce564d427a3311b6536bbcff9390d69395b06ed6c486954e971d960fe8709'
const address = privateKeyToAddress(privateKey)
expect(address).toEqual('0xb8CE9ab6943e0eCED004cDe8e3bBed6568B2Fa01')
})
})

13
packages/status-js/src/utils/private-key-to-address.ts Normal file
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import { keccak256 } from 'ethereum-cryptography/keccak'
import { getPublicKey } from 'ethereum-cryptography/secp256k1'
import { bytesToHex } from 'ethereum-cryptography/utils'
export function privateKeyToAddress(privateKey: string): string {
const publicKey = getPublicKey(privateKey)
const publicKeyWithoutPrefix = publicKey.slice(1) // uncompressed public key has 04 prefix
const hash = keccak256(publicKeyWithoutPrefix)
const address = bytesToHex(hash.slice(12))
// TODO: add checksum
return address
}