63 lines
1.4 KiB
TypeScript
63 lines
1.4 KiB
TypeScript
import wasmJson from "../wasm/sha1.wasm.json";
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import {
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type IHasher,
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type IWASMInterface,
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WASMInterface,
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} from "./WASMInterface";
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import lockedCreate from "./lockedCreate";
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import Mutex from "./mutex";
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import type { IDataType } from "./util";
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const mutex = new Mutex();
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let wasmCache: IWASMInterface = null;
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/**
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* Calculates SHA-1 hash
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* @param data Input data (string, Buffer or TypedArray)
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* @returns Computed hash as a hexadecimal string
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*/
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export function sha1(data: IDataType): Promise<string> {
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if (wasmCache === null) {
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return lockedCreate(mutex, wasmJson, 20).then((wasm) => {
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wasmCache = wasm;
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return wasmCache.calculate(data);
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});
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}
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try {
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const hash = wasmCache.calculate(data);
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return Promise.resolve(hash);
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} catch (err) {
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return Promise.reject(err);
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}
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}
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/**
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* Creates a new SHA-1 hash instance
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*/
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export function createSHA1(): Promise<IHasher> {
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return WASMInterface(wasmJson, 20).then((wasm) => {
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wasm.init();
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const obj: IHasher = {
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init: () => {
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wasm.init();
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return obj;
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},
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update: (data) => {
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wasm.update(data);
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return obj;
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},
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// biome-ignore lint/suspicious/noExplicitAny: Conflict with IHasher type
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digest: (outputType) => wasm.digest(outputType) as any,
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save: () => wasm.save(),
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load: (data) => {
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wasm.load(data);
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return obj;
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},
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blockSize: 64,
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digestSize: 20,
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};
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return obj;
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});
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}
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