crossPlatformSha256.ts•864 B
import { Sha256 as WebCryptoSha256 } from "./webCryptoSha256";
import { Sha256 as JsSha256 } from "@aws-crypto/sha256-js";
import { Checksum, SourceData } from "@aws-sdk/types";
import { supportsWebCrypto } from "@aws-crypto/supports-web-crypto";
import { locateWindow } from "@aws-sdk/util-locate-window";
import { convertToBuffer } from "@aws-crypto/util";
export class Sha256 implements Checksum {
private hash: Checksum;
constructor(secret?: SourceData) {
if (supportsWebCrypto(locateWindow())) {
this.hash = new WebCryptoSha256(secret);
} else {
this.hash = new JsSha256(secret);
}
}
update(data: SourceData, encoding?: "utf8" | "ascii" | "latin1"): void {
this.hash.update(convertToBuffer(data));
}
digest(): Promise<Uint8Array> {
return this.hash.digest();
}
reset(): void {
this.hash.reset();
}
}