How to Restore a Keypair

If you already have your secret key or bytes, you can get your Keypair from the secret to test out your dApp.

From Bytes

import { createKeyPairFromBytes } from "@solana/web3.js";

const keypairBytes = new Uint8Array([
  174, 47, 154, 16, 202, 193, 206, 113, 199, 190, 53, 133, 169, 175, 31, 56,
  222, 53, 138, 189, 224, 216, 117, 173, 10, 149, 53, 45, 73, 251, 237, 246, 15,
  185, 186, 82, 177, 240, 148, 69, 241, 227, 167, 80, 141, 89, 240, 121, 121,
  35, 172, 247, 68, 251, 226, 218, 48, 63, 176, 109, 168, 89, 238, 135,
]);

const keypair = await createKeyPairFromBytes(keypairBytes);

From Base58 String

import { createKeyPairFromBytes, getBase58Codec } from "@solana/web3.js";

const keypairBase58 =
  "5MaiiCavjCmn9Hs1o3eznqDEhRwxo7pXiAYez7keQUviUkauRiTMD8DrESdrNjN8zd9mTmVhRvBJeg5vhyvgrAhG";
const keypairBytes = getBase58Codec().decode(keypairBase58);
const keypair = await createKeyPairFromBytes(keypairBytes);