2022-07-02 06:09:45 +00:00
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type Algorithm = {
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name: string
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alias: string
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}
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2022-08-09 01:35:30 +00:00
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type Data = string | boolean | number | object | ArrayBufferView | ArrayBuffer | ReadableStream
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2022-07-02 06:09:45 +00:00
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export const sha256 = async (data: Data) => {
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const algorithm: Algorithm = { name: 'SHA-256', alias: 'sha256' }
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const hash = await createHash(data, algorithm)
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return hash
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}
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export const sha1 = async (data: Data) => {
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const algorithm: Algorithm = { name: 'SHA-1', alias: 'sha1' }
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const hash = await createHash(data, algorithm)
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return hash
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}
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export const md5 = async (data: Data) => {
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const algorithm: Algorithm = { name: 'MD5', alias: 'md5' }
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const hash = await createHash(data, algorithm)
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return hash
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}
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export const createHash = async (data: Data, algorithm: Algorithm): Promise<string | null> => {
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2022-08-05 15:31:11 +00:00
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let sourceBuffer: ArrayBufferView | ArrayBuffer
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2022-08-09 01:35:30 +00:00
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if (data instanceof ReadableStream) {
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let body = ''
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const reader = data.getReader()
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await reader?.read().then(async (chuck) => {
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const value = await createHash(chuck.value || '', algorithm)
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body += value
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})
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return body
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}
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2022-08-05 15:31:11 +00:00
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if (ArrayBuffer.isView(data) || data instanceof ArrayBuffer) {
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sourceBuffer = data
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} else {
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if (typeof data === 'object') {
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data = JSON.stringify(data)
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}
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sourceBuffer = new TextEncoder().encode(String(data))
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}
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2022-07-02 06:09:45 +00:00
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if (crypto && crypto.subtle) {
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const buffer = await crypto.subtle.digest(
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{
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name: algorithm.name,
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},
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2022-08-05 15:31:11 +00:00
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sourceBuffer
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2022-07-02 06:09:45 +00:00
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)
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const hash = Array.prototype.map
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.call(new Uint8Array(buffer), (x) => ('00' + x.toString(16)).slice(-2))
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.join('')
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return hash
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}
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return null
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}
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