Initial

resources/app/node_modules/@aws-crypto/sha256-js/build/jsSha256.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Sha256 = void 0;
+var tslib_1 = require("tslib");
+var constants_1 = require("./constants");
+var RawSha256_1 = require("./RawSha256");
+var util_1 = require("@aws-crypto/util");
+var Sha256 = /** @class */ (function () {
+    function Sha256(secret) {
+        this.secret = secret;
+        this.hash = new RawSha256_1.RawSha256();
+        this.reset();
+    }
+    Sha256.prototype.update = function (toHash) {
+        if ((0, util_1.isEmptyData)(toHash) || this.error) {
+            return;
+        }
+        try {
+            this.hash.update((0, util_1.convertToBuffer)(toHash));
+        }
+        catch (e) {
+            this.error = e;
+        }
+    };
+    /* This synchronous method keeps compatibility
+     * with the v2 aws-sdk.
+     */
+    Sha256.prototype.digestSync = function () {
+        if (this.error) {
+            throw this.error;
+        }
+        if (this.outer) {
+            if (!this.outer.finished) {
+                this.outer.update(this.hash.digest());
+            }
+            return this.outer.digest();
+        }
+        return this.hash.digest();
+    };
+    /* The underlying digest method here is synchronous.
+     * To keep the same interface with the other hash functions
+     * the default is to expose this as an async method.
+     * However, it can sometimes be useful to have a sync method.
+     */
+    Sha256.prototype.digest = function () {
+        return tslib_1.__awaiter(this, void 0, void 0, function () {
+            return tslib_1.__generator(this, function (_a) {
+                return [2 /*return*/, this.digestSync()];
+            });
+        });
+    };
+    Sha256.prototype.reset = function () {
+        this.hash = new RawSha256_1.RawSha256();
+        if (this.secret) {
+            this.outer = new RawSha256_1.RawSha256();
+            var inner = bufferFromSecret(this.secret);
+            var outer = new Uint8Array(constants_1.BLOCK_SIZE);
+            outer.set(inner);
+            for (var i = 0; i < constants_1.BLOCK_SIZE; i++) {
+                inner[i] ^= 0x36;
+                outer[i] ^= 0x5c;
+            }
+            this.hash.update(inner);
+            this.outer.update(outer);
+            // overwrite the copied key in memory
+            for (var i = 0; i < inner.byteLength; i++) {
+                inner[i] = 0;
+            }
+        }
+    };
+    return Sha256;
+}());
+exports.Sha256 = Sha256;
+function bufferFromSecret(secret) {
+    var input = (0, util_1.convertToBuffer)(secret);
+    if (input.byteLength > constants_1.BLOCK_SIZE) {
+        var bufferHash = new RawSha256_1.RawSha256();
+        bufferHash.update(input);
+        input = bufferHash.digest();
+    }
+    var buffer = new Uint8Array(constants_1.BLOCK_SIZE);
+    buffer.set(input);
+    return buffer;
+}
+//# sourceMappingURL=jsSha256.js.map