48 lines
1.7 KiB
JavaScript
48 lines
1.7 KiB
JavaScript
"use strict";
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// Copyright 2019 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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/* global window */
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.createCrypto = createCrypto;
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exports.hasBrowserCrypto = hasBrowserCrypto;
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exports.fromArrayBufferToHex = fromArrayBufferToHex;
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const crypto_1 = require("./browser/crypto");
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const crypto_2 = require("./node/crypto");
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function createCrypto() {
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if (hasBrowserCrypto()) {
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return new crypto_1.BrowserCrypto();
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}
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return new crypto_2.NodeCrypto();
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}
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function hasBrowserCrypto() {
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return (typeof window !== 'undefined' &&
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typeof window.crypto !== 'undefined' &&
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typeof window.crypto.subtle !== 'undefined');
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}
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/**
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* Converts an ArrayBuffer to a hexadecimal string.
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* @param arrayBuffer The ArrayBuffer to convert to hexadecimal string.
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* @return The hexadecimal encoding of the ArrayBuffer.
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*/
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function fromArrayBufferToHex(arrayBuffer) {
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// Convert buffer to byte array.
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const byteArray = Array.from(new Uint8Array(arrayBuffer));
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// Convert bytes to hex string.
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return byteArray
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.map(byte => {
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return byte.toString(16).padStart(2, '0');
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})
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.join('');
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}
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