80 lines
No EOL
3.1 KiB
JavaScript
80 lines
No EOL
3.1 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.Sha256 = void 0;
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var isEmptyData_1 = require("./isEmptyData");
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var constants_1 = require("./constants");
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var util_utf8_browser_1 = require("@aws-sdk/util-utf8-browser");
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var util_locate_window_1 = require("@aws-sdk/util-locate-window");
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var Sha256 = /** @class */ (function () {
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function Sha256(secret) {
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this.secret = secret;
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this.reset();
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}
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Sha256.prototype.update = function (toHash) {
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var _this = this;
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if ((0, isEmptyData_1.isEmptyData)(toHash)) {
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return;
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}
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this.operation = this.operation.then(function (operation) {
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operation.onerror = function () {
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_this.operation = Promise.reject(new Error("Error encountered updating hash"));
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};
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operation.process(toArrayBufferView(toHash));
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return operation;
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});
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this.operation.catch(function () { });
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};
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Sha256.prototype.digest = function () {
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return this.operation.then(function (operation) {
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return new Promise(function (resolve, reject) {
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operation.onerror = function () {
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reject(new Error("Error encountered finalizing hash"));
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};
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operation.oncomplete = function () {
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if (operation.result) {
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resolve(new Uint8Array(operation.result));
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}
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reject(new Error("Error encountered finalizing hash"));
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};
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operation.finish();
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});
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});
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};
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Sha256.prototype.reset = function () {
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if (this.secret) {
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this.operation = getKeyPromise(this.secret).then(function (keyData) {
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return (0, util_locate_window_1.locateWindow)().msCrypto.subtle.sign(constants_1.SHA_256_HMAC_ALGO, keyData);
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});
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this.operation.catch(function () { });
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}
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else {
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this.operation = Promise.resolve((0, util_locate_window_1.locateWindow)().msCrypto.subtle.digest("SHA-256"));
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}
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};
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return Sha256;
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}());
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exports.Sha256 = Sha256;
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function getKeyPromise(secret) {
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return new Promise(function (resolve, reject) {
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var keyOperation = (0, util_locate_window_1.locateWindow)().msCrypto.subtle.importKey("raw", toArrayBufferView(secret), constants_1.SHA_256_HMAC_ALGO, false, ["sign"]);
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keyOperation.oncomplete = function () {
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if (keyOperation.result) {
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resolve(keyOperation.result);
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}
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reject(new Error("ImportKey completed without importing key."));
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};
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keyOperation.onerror = function () {
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reject(new Error("ImportKey failed to import key."));
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};
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});
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}
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function toArrayBufferView(data) {
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if (typeof data === "string") {
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return (0, util_utf8_browser_1.fromUtf8)(data);
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}
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if (ArrayBuffer.isView(data)) {
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return new Uint8Array(data.buffer, data.byteOffset, data.byteLength / Uint8Array.BYTES_PER_ELEMENT);
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}
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return new Uint8Array(data);
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}
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//# sourceMappingURL=ie11Sha256.js.map
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