How to use the js-sha256.array function in js-sha256
To help you get started, we’ve selected a few js-sha256 examples, based on popular ways it is used in public projects.
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nearprotocol / near-wallet / src / utils / wallet.js View on Github 
async setupAccountRecovery(phoneNumber, accountId, securityCode) {
const account = this.getAccount(accountId)
const accountKeys = await account.getAccessKeys();
if (!accountKeys.some(it => it.public_key.endsWith(HELPER_KEY))) {
await account.addKey(HELPER_KEY);
}
const hash = Uint8Array.from(sha256.array(Buffer.from(securityCode)));
const { signature } = await this.connection.signer.signHash(hash, accountId, NETWORK_ID)
await this.validateCode(phoneNumber, accountId, { securityCode, signature: Buffer.from(signature).toString('base64') })
}js-sha256
A simple SHA-256 / SHA-224 hash function for JavaScript supports UTF-8 encoding.
