1/* 2 * Copyright (c) 2025-2025 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16// import buffer from "@ohos.buffer" 17 18namespace utils { 19export function hexStrToUint8Array(data: string): Uint8Array { 20 // return new Uint8Array(buffer.from(data, 'hex').buffer); 21 if (data.length % 2 !== 0) { 22 throw new Error("Invalid hex string"); 23 } 24 const array = new Uint8Array(data.length / 2); 25 for (let i = 0; i < data.length; i += 2) { 26 array[i / 2] = parseInt(data.substring(i, i + 2), 16); 27 } 28 return array; 29} 30 31export function stringToUint8Array(str: string): Uint8Array { 32 // return new Uint8Array(buffer.from(str, 'utf-8').buffer); 33 const array = new Uint8Array(str.length); 34 for (let i = 0; i < str.length; i++) { 35 array[i] = str.charCodeAt(i); 36 } 37 return array; 38} 39 40export function uint8ArrayToHexStr(data: Uint8Array): string { 41 // return buffer.from(data).toString('hex').toUpperCase(); 42 let str = ''; 43 for (let i = 0; i < data.length; i++) { 44 let num: Number = new Number(data[i]) 45 str += num.toString(16).padStart(2, '0'); 46 } 47 return str; 48} 49} // namespace utils 50 51export default utils; 52