chronocat/scripts/dti.cts

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TypeScript
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2024-03-06 05:19:54 +00:00
import type { Buffer } from 'node:buffer'
import { verify } from 'node:crypto'
import { readFile } from 'node:fs/promises'
import { resolve } from 'node:path'
import { argv } from 'node:process'
const checkScript = (key: Buffer, rawFile: Buffer) =>
new Promise<Buffer>((res, rej) => {
const partSig = rawFile.subarray(0, 1024)
const partData = rawFile.subarray(1024)
verify('sha256', partData, key, partSig, (e, r) =>
e ? rej(e) : r ? res(partData) : rej(new Error('Check failed.')),
)
})
void (async () => {
const key = await readFile(
resolve(__dirname, '../packages/docs/static/ti.pub'),
)
const rawFile = await readFile(argv[2]!)
await checkScript(key, rawFile)
})()