/*
* Copyright (c) 2026 Huawei Device Co., Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import Logger from '../util/Logger';
import picker from '@ohos.file.picker';
import { CryptoOperation } from '../cryptoframework/CryptoOperation';
import TextFileManager from '../textfilemanager/TextFileManager';
import common from '@ohos.app.ability.common';
import window from '@ohos.window';
import { util } from '@kit.ArkTS';
import { MetadataHelper } from '../util/MetadataHelper';
const TAG: string = '[Crypto_Framework]';
// 验签结果接口
interface VerifyResult {
success: boolean;
isValid: boolean;
message: string;
algorithm?: string;
verifyTime?: string;
}
@Component
export struct Verify {
// 状态变量
@State isProcessing: boolean = false;
@State verifyResult: string = '';
@State verifyDetails: string = '';
@State keyFileName: string = '';
@State keyFileUri: string = '';
@State textFileUri: string = '';
@State textFileName: string = '';
@State keyString: string = '';
@State plainText: string = '';
@State message: string = '';
@State signFileUri: string = '';
@State signFileName: string = '';
@State signData: string = ''; // 签名数据（Base64或十六进制）
@State createKeyUri: string = '';
@State fileHash: string = ''; // 文件哈希值
private CryptoOperation: CryptoOperation = new CryptoOperation();
build() {
Stack({ alignContent: Alignment.TopStart }) {
// 背景渐变装饰层
Column()
.width('100%')
.height('100%')
.linearGradient({
angle: 180,
colors: [[0xF5F7FA, 0.0], [0xE8ECF1, 1.0]]
})
// 主内容区域
Scroll() {
Column({ space: 16 }) {
// 顶部标题区域
Row() {
Column() {
Text('文件验签')
.fontSize(24)
.fontWeight(600)
.fontColor($r('sys.color.font_primary'))
.lineHeight(32)
Text('验证文件完整性和真实性')
.fontSize(14)
.fontWeight(400)
.fontColor($r('sys.color.font_secondary'))
.margin({ top: 4 })
.opacity(0.8)
}
.alignItems(HorizontalAlign.Center)
.width('100%')
}
.width('100%')
.padding({
left: 24,
right: 24,
top: 16,
bottom: 8
})
// 文件选择卡片区域
GridRow() {
GridCol({
span: {
xs: 12,
sm: 12,
md: 12,
lg: 12
}
}) {
Column() {
// 卡片标题
Row() {
Column() {
Text('文件选择')
.fontSize(18)
.fontWeight(600)
.fontColor($r('sys.color.font_primary'))
.lineHeight(24)
}
.alignItems(HorizontalAlign.Start)
.width('100%')
}
.width('100%')
.padding({
left: 20,
right: 20,
top: 16,
bottom: 12
})
// 分隔线
Divider()
.color(0xE5E5E5)
.strokeWidth(1)
.margin({ left: 20, right: 20 })
// 文件选择列表
Column({ space: 12 }) {
// 待验签文件选择项
Row() {
Column() {
Row() {
// 图标区域
Row() {
Text('📄')
.fontSize(20)
.fontWeight(400)
}
.width(40)
.height(40)
.borderRadius(8)
.backgroundColor(0xF0F4F8)
.justifyContent(FlexAlign.Center)
// 文本区域
Column({ space: 4 }) {
Text($r('app.string.open_file'))
.fontSize(16)
.fontWeight(500)
.fontColor($r('sys.color.font_primary'))
.textAlign(TextAlign.Start)
.lineHeight(22)
Text(this.textFileName === '' ? $r('app.string.please_choose') : this.textFileName)
.fontSize(13)
.fontWeight(400)
.fontColor(this.textFileName === '' ? $r('sys.color.font_secondary') :
$r('sys.color.font_primary'))
.textAlign(TextAlign.Start)
.lineHeight(18)
.maxLines(1)
.textOverflow({ overflow: TextOverflow.Ellipsis })
.opacity(this.textFileName === '' ? 0.6 : 0.9)
}
.alignItems(HorizontalAlign.Start)
.layoutWeight(1)
.margin({ left: 12 })
// 箭头图标
Image($r('app.media.right_arrow'))
.height(20)
.width(20)
.margin({ left: 8 })
.opacity(0.5)
}
.width('100%')
.height('100%')
}
.width('100%')
.height('100%')
}
.width('100%')
.height(72)
.padding({
left: 20,
right: 20,
top: 12,
bottom: 12
})
.backgroundColor(0xFFFFFF)
.borderRadius(12)
.shadow({
radius: 8,
color: 0x1A000000,
offsetX: 0,
offsetY: 2
})
.onClick(() => {
if (!this.isProcessing) {
this.selectTextFileAndRead();
}
})
// RSA公钥文件选择项
Row() {
Column() {
Row() {
// 图标区域
Row() {
Text('🔓')
.fontSize(20)
.fontWeight(400)
}
.width(40)
.height(40)
.borderRadius(8)
.backgroundColor(0xFFE3F2FD)
.justifyContent(FlexAlign.Center)
// 文本区域
Column({ space: 4 }) {
Text($r('app.string.select_key_file'))
.fontSize(16)
.fontWeight(500)
.fontColor($r('sys.color.font_primary'))
.textAlign(TextAlign.Start)
.lineHeight(22)
Text(this.keyFileName === '' ? $r('app.string.please_choose') : this.keyFileName)
.fontSize(13)
.fontWeight(400)
.fontColor(this.keyFileName === '' ? $r('sys.color.font_secondary') :
$r('sys.color.font_primary'))
.textAlign(TextAlign.Start)
.lineHeight(18)
.maxLines(1)
.textOverflow({ overflow: TextOverflow.Ellipsis })
.opacity(this.keyFileName === '' ? 0.6 : 0.9)
}
.alignItems(HorizontalAlign.Start)
.layoutWeight(1)
.margin({ left: 12 })
// 箭头图标
Image($r('app.media.right_arrow'))
.height(20)
.width(20)
.margin({ left: 8 })
.opacity(0.5)
}
.width('100%')
.height('100%')
}
.width('100%')
.height('100%')
}
.width('100%')
.height(72)
.padding({
left: 20,
right: 20,
top: 12,
bottom: 12
})
.backgroundColor(0xFFFFFF)
.borderRadius(12)
.shadow({
radius: 8,
color: 0x1A000000,
offsetX: 0,
offsetY: 2
})
.onClick(() => {
if (!this.isProcessing) {
this.selectRsaKeyFileAndRead();
}
})
// 签名文件选择项
Row() {
Column() {
Row() {
// 图标区域
Row() {
Text('✍️')
.fontSize(20)
.fontWeight(400)
}
.width(40)
.height(40)
.borderRadius(8)
.backgroundColor(0xFFFFF3E0)
.justifyContent(FlexAlign.Center)
// 文本区域
Column({ space: 4 }) {
Text($r('app.string.select_signature_file'))
.fontSize(16)
.fontWeight(500)
.fontColor($r('sys.color.font_primary'))
.textAlign(TextAlign.Start)
.lineHeight(22)
Text(this.signFileName === '' ? $r('app.string.please_choose') : this.signFileName)
.fontSize(13)
.fontWeight(400)
.fontColor(this.signFileName === '' ? $r('sys.color.font_secondary') :
$r('sys.color.font_primary'))
.textAlign(TextAlign.Start)
.lineHeight(18)
.maxLines(1)
.textOverflow({ overflow: TextOverflow.Ellipsis })
.opacity(this.signFileName === '' ? 0.6 : 0.9)
}
.alignItems(HorizontalAlign.Start)
.layoutWeight(1)
.margin({ left: 12 })
// 箭头图标
Image($r('app.media.right_arrow'))
.height(20)
.width(20)
.margin({ left: 8 })
.opacity(0.5)
}
.width('100%')
.height('100%')
}
.width('100%')
.height('100%')
}
.width('100%')
.height(72)
.padding({
left: 20,
right: 20,
top: 12,
bottom: 12
})
.backgroundColor(0xFFFFFF)
.borderRadius(12)
.shadow({
radius: 8,
color: 0x1A000000,
offsetX: 0,
offsetY: 2
})
.onClick(() => {
if (!this.isProcessing) {
this.selectSignFileAndRead();
}
})
}
.width('100%')
.padding({ top: 8, bottom: 16 })
}
.width('100%')
.backgroundColor(0xFFFFFF)
.borderRadius(20)
.padding({ top: 0, bottom: 0 })
.shadow({
radius: 12,
color: 0x1F000000,
offsetX: 0,
offsetY: 4
})
}
}
.width('100%')
.margin({
left: 16,
right: 16,
top: 8,
bottom: 8
})
// 文件内容显示区域
GridRow() {
GridCol({
span: {
xs: 12,
sm: 12,
md: 12,
lg: 12
}
}) {
Column() {
// 标题栏
Row() {
Row() {
Text('📝')
.fontSize(18)
.margin({ right: 8 })
Text($r('app.string.text_context'))
.fontSize(18)
.fontWeight(600)
.fontColor($r('sys.color.font_primary'))
.lineHeight(24)
}
.alignItems(VerticalAlign.Center)
.width('100%')
}
.width('100%')
.height(56)
.padding({ left: 20, right: 20 })
.justifyContent(FlexAlign.Start)
// 分隔线
Divider()
.color(0xE5E5E5)
.strokeWidth(1)
.margin({ left: 20, right: 20 })
// 内容区域
Column({ space: 12 }) {
Row() {
Scroll() {
Column({ space: 10 }) {
Text() {
Span(this.plainText || $r('app.string.please_choose'))
.fontSize(15)
.fontWeight(400)
.fontColor($r('sys.color.font_primary'))
}
.textAlign(TextAlign.Start)
.lineHeight(22)
.maxLines(10)
.textOverflow({ overflow: TextOverflow.Ellipsis })
}
.width('100%')
}
.width('100%')
.height(140)
.scrollBar(BarState.Auto)
}
.width('100%')
.padding({
left: 20,
right: 20,
top: 8,
bottom: 16
})
}
.width('100%')
}
.width('100%')
.backgroundColor(0xFFFFFF)
.borderRadius(20)
.padding({ top: 0, bottom: 0 })
.shadow({
radius: 12,
color: 0x1F000000,
offsetX: 0,
offsetY: 4
})
}
}
.width('100%')
.margin({
left: 16,
right: 16,
top: 8,
bottom: 8
})
// 验签结果显示区域
if (this.verifyResult) {
GridRow() {
GridCol({
span: {
xs: 12,
sm: 12,
md: 12,
lg: 12
}
}) {
Column() {
// 标题栏
Row() {
Row() {
Text(this.verifyResult === '验签成功' ? '✅' : this.verifyResult === '验签失败' ? '❌' : '⚠️')
.fontSize(18)
.margin({ right: 8 })
Text('验签结果')
.fontSize(18)
.fontWeight(600)
.fontColor($r('sys.color.font_primary'))
.lineHeight(24)
}
.alignItems(VerticalAlign.Center)
.width('100%')
}
.width('100%')
.height(56)
.padding({ left: 20, right: 20 })
.justifyContent(FlexAlign.Start)
// 分隔线
Divider()
.color(0xE5E5E5)
.strokeWidth(1)
.margin({ left: 20, right: 20 })
// 内容区域
Column({ space: 12 }) {
Row() {
Scroll() {
Column({ space: 10 }) {
Text(this.verifyResult)
.fontSize(16)
.fontWeight(600)
.fontColor(this.verifyResult === '验签成功' ? 0xFF1E8E3E :
this.verifyResult === '验签失败' ? 0xFFF44336 :
$r('sys.color.font_primary'))
.textAlign(TextAlign.Start)
.lineHeight(24)
if (this.verifyDetails) {
Divider()
.color(0xF0F0F0)
.strokeWidth(1)
.margin({ top: 4, bottom: 4 })
Text(this.verifyDetails)
.fontSize(13)
.fontWeight(400)
.fontColor($r('sys.color.font_secondary'))
.textAlign(TextAlign.Start)
.lineHeight(20)
.opacity(0.85)
}
}
.width('100%')
}
.width('100%')
.height(120)
.scrollBar(BarState.Auto)
}
.width('100%')
.padding({
left: 20,
right: 20,
top: 8,
bottom: 16
})
}
.width('100%')
}
.width('100%')
.backgroundColor(this.verifyResult === '验签成功' ? 0xFFE8F5E9 :
this.verifyResult === '验签失败' ? 0xFFFFEBEE :
0xFFFFFF)
.borderRadius(20)
.padding({ top: 0, bottom: 0 })
.shadow({
radius: 12,
color: 0x1F000000,
offsetX: 0,
offsetY: 4
})
}
}
.width('100%')
.margin({
left: 16,
right: 16,
top: 8,
bottom: 8
})
}
// 操作按钮区域
Column({ space: 16 }) {
// 验签按钮
Button() {
Row() {
if (this.isProcessing) {
LoadingProgress()
.width(20)
.height(20)
.color($r('sys.color.comp_background_list_card'))
.margin({ right: 8 })
} else {
Text('🔍')
.fontSize(18)
.margin({ right: 8 })
}
Text($r('app.string.verify'))
.fontSize(16)
.fontWeight(600)
.lineHeight(22)
.fontColor($r('sys.color.comp_background_list_card'))
}
.width('100%')
.justifyContent(FlexAlign.Center)
}
.borderRadius(24)
.id('verifyBtn')
.type(ButtonType.Capsule)
.width('100%')
.height(52)
.backgroundColor($r('sys.color.brand'))
.enabled(!this.isProcessing && !!this.textFileUri && !!this.keyString && !!this.signData)
.opacity((!this.isProcessing && !!this.textFileUri && !!this.keyString && !!this.signData) ? 1.0 : 0.5)
.shadow({
radius: 8,
color: 0x33000000,
offsetX: 0,
offsetY: 2
})
.onClick(() => {
if (this.textFileUri === '' || this.keyString === '' || this.signData === '') {
this.getUIContext().getPromptAction().showToast({
message: $r('app.string.null_message')
});
} else {
this.verifyFunc();
}
})
// 处理状态指示器
if (this.isProcessing) {
Row() {
LoadingProgress()
.width(24)
.height(24)
.color($r('sys.color.brand'))
Text('正在处理中...')
.fontSize(14)
.fontWeight(400)
.fontColor($r('sys.color.font_secondary'))
.margin({ left: 12 })
.opacity(0.8)
}
.width('100%')
.height(40)
.justifyContent(FlexAlign.Center)
.margin({ top: 8 })
}
}
.width('100%')
.padding({
left: 16,
right: 16,
top: 8,
bottom: 24
})
}
.width('100%')
.padding({ top: 8, bottom: 16 })
}
.width('100%')
.height('100%')
.scrollBar(BarState.Auto)
.scrollable(ScrollDirection.Vertical)
}
.width('100%')
.height('100%')
}
/**
* 选择并读取RSA公钥文件
*/
async selectRsaKeyFileAndRead() {
this.isProcessing = true;
try {
let context = this.getUIContext().getHostContext() as common.UIAbilityContext;
let documentPicker = new picker.DocumentViewPicker(context);
let documentSelectOptions = new picker.DocumentSelectOptions();
let uris = await documentPicker.select(documentSelectOptions);
const windowClass = await window.getLastWindow(context);
if (uris && uris.length > 0) {
this.keyFileUri = uris[0];
this.keyFileName = this.getFileNameFromUri(this.keyFileUri);
// 使用TextFileManager读取密钥文件
const readResult = await TextFileManager.readTextFile(this.keyFileUri);
if (readResult.success) {
try {
const decoder = new util.TextDecoder('utf-8');
const uint8 = new Uint8Array(readResult.data as ArrayBuffer);
// 需要完整公钥内容用于验证，不应截断为前 2000 字节
this.keyString = decoder.decode(uint8);
} catch (decodeError) {
Logger.error(TAG, `Binary decode error: ${decodeError.code}`);
this.keyString = "密钥内容预览不可用";
}
windowClass.getUIContext().getPromptAction().showToast({
message: '公钥文件读取成功'
});
} else {
windowClass.getUIContext().getPromptAction().showToast({
message: '公钥文件读取失败'
});
}
} else {
windowClass.getUIContext().getPromptAction().showToast({
message: '未选择文件'
});
}
} catch (error) {
Logger.error(TAG, `selectRsaKeyFileAndRead failed, ${error.code}, ${error.message}`);
const windowClass = await window.getLastWindow(this.getUIContext().getHostContext() as common.UIAbilityContext);
windowClass.getUIContext().getPromptAction().showToast({
message: '选择文件失败，请重试'
});
} finally {
this.isProcessing = false;
}
}
/**
* 选择并读取待验签的文件
*/
async selectTextFileAndRead() {
this.isProcessing = true;
try {
let context = this.getUIContext().getHostContext() as common.UIAbilityContext;
let documentPicker = new picker.DocumentViewPicker(context);
let documentSelectOptions = new picker.DocumentSelectOptions();
let uris = await documentPicker.select(documentSelectOptions);
const windowClass = await window.getLastWindow(context);
if (uris && uris.length > 0) {
this.textFileUri = uris[0];
this.textFileName = this.getFileNameFromUri(this.textFileUri);
// 使用TextFileManager读取文件
const readResult = await TextFileManager.readTextFile(this.textFileUri);
if (readResult.success) {
try {
const decoder = new util.TextDecoder('utf-8');
const uint8 = new Uint8Array(readResult.data as ArrayBuffer);
const dataSlice = uint8.slice(0, 1000);
this.plainText = decoder.decode(dataSlice);
} catch (decodeError) {
Logger.error(TAG, `Binary decode error: ${decodeError.code}`);
this.plainText = "二进制内容预览不可用";
}
windowClass.getUIContext().getPromptAction().showToast({
message: '文件读取成功'
});
} else {
windowClass.getUIContext().getPromptAction().showToast({
message: '文件读取失败'
});
}
} else {
windowClass.getUIContext().getPromptAction().showToast({
message: '未选择文件'
});
}
} catch (error) {
Logger.error(TAG, `selectTextFileAndRead failed, ${error.code}, ${error.message}`);
const windowClass = await window.getLastWindow(this.getUIContext().getHostContext() as common.UIAbilityContext);
windowClass.getUIContext().getPromptAction().showToast({
message: '选择文件失败，请重试'
});
} finally {
this.isProcessing = false;
}
}
/**
* 选择并读取签名文件
*/
async selectSignFileAndRead() {
this.isProcessing = true;
try {
let context = this.getUIContext().getHostContext() as common.UIAbilityContext;
let documentPicker = new picker.DocumentViewPicker(context);
let documentSelectOptions = new picker.DocumentSelectOptions();
let uris = await documentPicker.select(documentSelectOptions);
const windowClass = await window.getLastWindow(context);
if (uris && uris.length > 0) {
this.signFileUri = uris[0];
this.signFileName = this.getFileNameFromUri(this.signFileUri);
// 读取签名文件
const readResult = await TextFileManager.readTextFile(this.signFileUri);
if (readResult.success) {
const fileData = readResult.data as ArrayBuffer;
// 尝试解析元数据头
const parseResult = MetadataHelper.parseDataWithMetadata(fileData);
if (parseResult.success && parseResult.data) {
// 提取纯签名数据
const signatureArray = new Uint8Array(parseResult.data);
this.signData = this.uint8ArrayToBase64(signatureArray);
// 显示元数据信息
if (parseResult.metadata) {
this.verifyDetails = `检测到签名元数据:\n` +
`原始格式: ${parseResult.metadata.originalExtension}\n` +
`签名算法: ${parseResult.metadata.algorithm || '未知'}\n` +
`签名时间: ${new Date(parseResult.metadata.timestamp).toLocaleString()}`;
}
} else {
// 如果没有元数据头，假设是纯签名数据
const signatureArray = new Uint8Array(fileData);
this.signData = this.uint8ArrayToBase64(signatureArray);
}
windowClass.getUIContext().getPromptAction().showToast({
message: '签名文件读取成功'
});
} else {
windowClass.getUIContext().getPromptAction().showToast({
message: '签名文件读取失败'
});
}
} else {
windowClass.getUIContext().getPromptAction().showToast({
message: '未选择文件'
});
}
} catch (error) {
Logger.error(TAG, `selectSignFileAndRead failed, ${error.code}, ${error.message}`);
const windowClass = await window.getLastWindow(this.getUIContext().getHostContext() as common.UIAbilityContext);
windowClass.getUIContext().getPromptAction().showToast({
message: '选择文件失败，请重试'
});
} finally {
this.isProcessing = false;
}
}
/**
* 计算文件哈希值
*/
async calculateFileHash() {
this.isProcessing = true;
try {
const windowClass = await window.getLastWindow(this.getUIContext().getHostContext() as common.UIAbilityContext);
// 读取文件数据
const readResult = await TextFileManager.readTextFile(this.textFileUri);
if (!readResult.success) {
windowClass.getUIContext().getPromptAction().showToast({
message: '文件读取失败'
});
return;
}
const fileData = readResult.data as ArrayBuffer;
// 手动哈希计算已移除；签名/验签流程会自动处理哈希
} finally {
this.isProcessing = false;
}
}
/**
* 验签功能主函数
*/
async verifyFunc() {
this.isProcessing = true;
const windowClass = await window.getLastWindow(this.getUIContext().getHostContext() as common.UIAbilityContext);
// 重置验签结果
this.verifyResult = '';
this.verifyDetails = '';
if (this.textFileUri === '' || this.keyString === '' || this.signData === '') {
windowClass.getUIContext().getPromptAction().showToast({
message: $r('app.string.null_message')
});
this.isProcessing = false;
return;
}
try {
// 读取原始文件数据
const readResult = await TextFileManager.readTextFile(this.textFileUri);
if (!readResult.success) {
windowClass.getUIContext().getPromptAction().showToast({
message: '文件读取失败'
});
this.isProcessing = false;
return;
}
let fileData: ArrayBuffer | string = readResult.data;
if (typeof fileData !== 'string') {
fileData = fileData as ArrayBuffer;
}
// 准备签名数据（可能是Base64或十六进制字符串）
let signatureData: ArrayBuffer;
if (this.isBase64(this.signData)) {
// Base64编码的签名数据
signatureData = this.base64ToUint8Array(this.signData).buffer;
} else if (this.isHexString(this.signData)) {
// 十六进制编码的签名数据
signatureData = this.hexStringToUint8Array(this.signData).buffer;
} else {
// 假设是原始字符串数据
const encoder = new util.TextEncoder();
signatureData = encoder.encode(this.signData).buffer;
}
let verifyResult: boolean = false;
// 根据数据类型选择验签方法 [1,4](@ref)
if (typeof fileData === 'string') {
// 字符串数据使用字符串验签方法
verifyResult = !!(await this.CryptoOperation.rsaConvertAndVerify(
this.keyString, fileData, this.signData
));
} else {
// 二进制数据使用二进制验签方法 [6](@ref)
const binaryVerifyResult = await this.CryptoOperation.rsaConvertAndVerifyBinary(
this.keyString, fileData as ArrayBuffer, signatureData
);
verifyResult = binaryVerifyResult.valid === true;
}
// 显示验签结果
const verifyTime = new Date().toLocaleString();
if (verifyResult) {
this.verifyResult = '验签成功';
this.verifyDetails = `文件完整性验证通过\n验签时间: ${verifyTime}\n文件来源可信`;
windowClass.getUIContext().getPromptAction().showToast({
message: $r('app.string.verify_success')
});
Logger.info(TAG, `文件验签成功，验签时间: ${verifyTime}`);
} else {
this.verifyResult = '验签失败';
this.verifyDetails = `文件可能已被篡改或签名无效\n验签时间: ${verifyTime}\n建议重新获取原始文件`;
windowClass.getUIContext().getPromptAction().showToast({
message: $r('app.string.verify_fail')
});
Logger.warn(TAG, `文件验签失败，文件可能已被篡改`);
}
} catch (error) {
Logger.error(TAG, `verify failed, ${error.code}, ${error.message}`);
this.verifyResult = '验签过程出错';
this.verifyDetails = `验签过程中发生错误: ${error.message}\n请检查文件格式和密钥是否正确`;
windowClass.getUIContext().getPromptAction().showToast({
message: '验签过程发生错误'
});
} finally {
this.isProcessing = false;
}
}
/**
* 从文件URI中提取文件名
*/
private getFileNameFromUri(uri: string): string {
if (!uri) {
return '未知文件';
}
try {
const segments = uri.split('/');
let name = segments[segments.length - 1] || '未知文件';
try {
name = decodeURIComponent(name);
} catch (e) {
try {
name = decodeURI(name);
} catch (_) {
}
}
if (name.startsWith('file://')) {
const parts = name.split('/');
name = parts[parts.length - 1] || name;
}
return name;
} catch (e) {
return uri;
}
}
/**
* 检查字符串是否为Base64编码
*/
private isBase64(str: string): boolean {
try {
const base64Helper = new util.Base64Helper();
// 尝试解码，如果成功则认为是有效的Base64
base64Helper.decodeSync(str);
return true;
} catch (err) {
return false;
}
}
/**
* 检查字符串是否为十六进制编码
*/
// 预编译正则表达式提升性能
private readonly HEX_REGEX: RegExp = new RegExp("^[0-9A-Fa-f]+$");
private isHexString(str: string): boolean {
return str.length > 0 && this.HEX_REGEX.test(str);
}
/**
* Base64字符串转换为Uint8Array
*/
private base64ToUint8Array(base64: string): Uint8Array {
try {
const base64Helper = new util.Base64Helper();
return base64Helper.decodeSync(base64);
} catch (error) {
Logger.error(TAG, `Base64解码失败: ${error.message}`);
return new Uint8Array(0);
}
}
/**
* 十六进制字符串转换为Uint8Array
*/
private hexStringToUint8Array(hexString: string): Uint8Array {
try {
const bytes = new Uint8Array(hexString.length / 2);
for (let i = 0; i < hexString.length; i += 2) {
bytes[i / 2] = parseInt(hexString.substr(i, 2), 16);
}
return bytes;
} catch (error) {
Logger.error(TAG, `十六进制解码失败: ${error.message}`);
return new Uint8Array(0);
}
}
/**
* Uint8Array转换为Base64字符串
*/
private uint8ArrayToBase64(uint8Array: Uint8Array): string {
try {
const base64Helper = new util.Base64Helper();
return base64Helper.encodeToStringSync(uint8Array);
} catch (error) {
Logger.error(TAG, `Base64编码失败: ${error.message}`);
return '';
}
}
}
