35 lines
1.0 KiB
TypeScript
35 lines
1.0 KiB
TypeScript
import { Sha256 as Ie11Sha256 } from "./ie11Sha256";
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import { Sha256 as WebCryptoSha256 } from "./webCryptoSha256";
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import { Sha256 as JsSha256 } from "@aws-crypto/sha256-js";
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import { Checksum, SourceData } from "@aws-sdk/types";
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import { supportsWebCrypto } from "@aws-crypto/supports-web-crypto";
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import { isMsWindow } from "@aws-crypto/ie11-detection";
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import { locateWindow } from "@aws-sdk/util-locate-window";
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import { convertToBuffer } from "@aws-crypto/util";
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export class Sha256 implements Checksum {
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private hash: Checksum;
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constructor(secret?: SourceData) {
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if (supportsWebCrypto(locateWindow())) {
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this.hash = new WebCryptoSha256(secret);
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} else if (isMsWindow(locateWindow())) {
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this.hash = new Ie11Sha256(secret);
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} else {
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this.hash = new JsSha256(secret);
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}
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}
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update(data: SourceData, encoding?: "utf8" | "ascii" | "latin1"): void {
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this.hash.update(convertToBuffer(data));
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}
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digest(): Promise<Uint8Array> {
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return this.hash.digest();
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}
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reset(): void {
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this.hash.reset();
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}
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}
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