50 lines
6.7 KiB
JavaScript
50 lines
6.7 KiB
JavaScript
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"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 util_1 = require("@aws-crypto/util");
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var constants_1 = require("./constants");
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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.toHash = new Uint8Array(0);
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if (secret !== void 0) {
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this.key = new Promise(function (resolve, reject) {
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(0, util_locate_window_1.locateWindow)()
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.crypto.subtle.importKey("raw", (0, util_1.convertToBuffer)(secret), constants_1.SHA_256_HMAC_ALGO, false, ["sign"])
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.then(resolve, reject);
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});
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this.key.catch(function () { });
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}
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}
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Sha256.prototype.update = function (data) {
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if ((0, util_1.isEmptyData)(data)) {
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return;
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}
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var update = (0, util_1.convertToBuffer)(data);
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var typedArray = new Uint8Array(this.toHash.byteLength + update.byteLength);
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typedArray.set(this.toHash, 0);
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typedArray.set(update, this.toHash.byteLength);
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this.toHash = typedArray;
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};
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Sha256.prototype.digest = function () {
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var _this = this;
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if (this.key) {
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return this.key.then(function (key) {
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return (0, util_locate_window_1.locateWindow)()
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.crypto.subtle.sign(constants_1.SHA_256_HMAC_ALGO, key, _this.toHash)
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.then(function (data) { return new Uint8Array(data); });
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});
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}
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if ((0, util_1.isEmptyData)(this.toHash)) {
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return Promise.resolve(constants_1.EMPTY_DATA_SHA_256);
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}
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return Promise.resolve()
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.then(function () {
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return (0, util_locate_window_1.locateWindow)().crypto.subtle.digest(constants_1.SHA_256_HASH, _this.toHash);
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})
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.then(function (data) { return Promise.resolve(new Uint8Array(data)); });
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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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