网站托管内容,wordpress xml rpc,下载素材的网站,西安网站建设有限公司加解密算法库框架
介绍
本示例使用ohos.security.cryptoFramework相关接口实现了对文本文件的加解密、签名验签操作。
实现场景如下#xff1a;
1#xff09;软件需要加密存储本地文本文件#xff0c;需要调用加解密算法库框架选择密钥文本文件#xff0c;对本地文本文…加解密算法库框架
介绍
本示例使用ohos.security.cryptoFramework相关接口实现了对文本文件的加解密、签名验签操作。
实现场景如下
1软件需要加密存储本地文本文件需要调用加解密算法库框架选择密钥文本文件对本地文本文件进行加密其中密钥文本文件可由加解密算法库生成。
2软件需要解密存储本地文本文件需要调用加解密算法库框架选择密钥文本文件对本地文本文件进行解密其中密钥文本文件可由加解密算法库生成。
3软件需要对存储本地文本文件签名调用加解密算法库框架选择密钥文本文件对本地文本文件进行完整性签名其中密钥文本文件可由加解密算法库生成。
4软件需要验证存储本地文本文件的签名完整性需要调用加解密算法库框架选择密钥文本文件与签名文件对文件进行验签其中密钥文本文件可由加解密算法库生成。
效果预览 使用说明
1.点击主页面tab栏的加密在加密界面点击打开文件通过文件选择器选择文本文件选择完毕自动返回加密界面 其内容显示在文件内容文本框中 点击选择密钥选择密钥文件如果没有密钥文件可以通过在加密界面点击随机生成AES密钥生成并通过文件选择器保存密钥文件。 选择完文本文件和密钥文件后点击加密按钮完成加密并通过文件选择器保存密文文件。 下方加密内容文本框中显示加密后的消息内容。
2.点击主页面tab栏的解密在解密界面点击打开文件通过文件选择器选择文本文件选择完毕自动返回解密界面 其内容显示在文件内容文本框中 点击选择密钥选择和加密相同的密钥文件。 选择完文本文件和密钥文件后点击解密按钮完成解密并通过文件选择器保存明文文件。 下方解密内容文本框中显示解密后的消息内容。
3.点击主页面tab栏的签名在签名界面点击打开文件通过文件选择器选择文本文件选择完毕自动返回签名界面 其内容显示在文件内容文本框中 点击选择密钥选择密钥文件如果没有密钥文件可以通过在签名界面点击随机生成RSA密钥生成并通过文件选择器保存密钥文件注意RSA密钥生成耗时较长。 选择完文本文件和密钥文件后点击签名按钮完成完整性签名并通过文件选择器保存签名文件。
4.点击主页面tab栏的验签在验签界面点击打开文件通过文件选择器选择文本文件选择完毕自动返回验签界面 其内容显示在文件内容文本框中 点击选择密钥选择和签名一致的密钥文件。点击选择签名文件通过文件选择器选择签名时保存的签名文件 选择完文本文件、密钥文件和签名文件后点击验签按钮完成验签。
具体实现
进行对文本文件进行加解密、签名验签的功能接口封装在CryptoOperation中源码参考[CryptoOperation.ts]
/** Copyright (c) 2023 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 { cryptoFramework } from kit.CryptoArchitectureKit;
import Logger from ../util/Logger;const TAG: string [Crypto_Framework];
const BASE_16: number 16;
const SLICE_NUMBER: number -2;// 字节流以16进制字符串输出
function uint8ArrayToShowStr(uint8Array: Uint8Array): string {let ret: string Array.prototype.map.call(uint8Array, (x) (00 x.toString(BASE_16)).slice(SLICE_NUMBER)).join();return ret;
}// 16进制字符串转字节流
function fromHexString(hexString: string): Uint8Array {let ret: Uint8Array new Uint8Array(hexString.match(/.{1,2}/g).map(byte parseInt(byte, BASE_16)));return ret;
}// 字节流转字符串
function arrayBufferToString(buffer: ArrayBuffer): string {let ret: string String.fromCharCode.apply(null, new Uint8Array(buffer));return ret;
}// 可理解的字符串转成字节流
function stringToUint8Array(str: string): Uint8Array {let arr [];for (let i 0, j str.length; i j; i) {arr.push(str.charCodeAt(i));}let ret: Uint8Array new Uint8Array(arr);return ret;
}function genGcmParamsSpec(): cryptoFramework.GcmParamsSpec {let arr [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]; // 12 byteslet dataIv new Uint8Array(arr);let ivBlob { data: dataIv };arr [0, 0, 0, 0, 0, 0, 0, 0]; // 8 byteslet dataAad new Uint8Array(arr);let aadBlob { data: dataAad };arr [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]; // 16 byteslet dataTag new Uint8Array(arr);let tagBlob { data: dataTag }; // GCM的authTag在加密时从doFinal结果中获取在解密时填入init函数的params参数中let gcmParamsSpec { iv: ivBlob, aad: aadBlob, authTag: tagBlob, algName: GcmParamsSpec };return gcmParamsSpec;
}export class CryptoOperation {async generateAesKey(): Promisestring {let symKeyGenerator;let encodedKey;// 创建对称密钥生成器try {symKeyGenerator cryptoFramework.createSymKeyGenerator(AES256);} catch (error) {Logger.error(TAG, create generator failed);return null;}// 通过密钥生成器随机生成对称密钥try {let symKey await symKeyGenerator.generateSymKey();// 获取对称密钥的二进制数据输出长度为256bit的字节流encodedKey symKey.getEncoded();let data: Uint8Array encodedKey.data;Logger.info(success, key bytes: data);Logger.info(success, key hex: uint8ArrayToShowStr(data));// 将二进制数据转为16进制string。return uint8ArrayToShowStr(data);} catch (error) {Logger.error(TAG, create symKey failed);return null;}}async convertAesKey(aesKeyBlobString: string): PromisecryptoFramework.SymKey {let symKeyGenerator cryptoFramework.createSymKeyGenerator(AES256);Logger.info(TAG, success, read key string aesKeyBlobString);Logger.info(TAG, success, blob key fromHexString(aesKeyBlobString));let symKeyBlob { data: fromHexString(aesKeyBlobString) };try {let key await symKeyGenerator.convertKey(symKeyBlob);let aesKey: cryptoFramework.SymKey key;return aesKey;} catch (error) {Logger.error(TAG, convert aes key failed, ${error.code}, ${error.message});return null;}}async aesGcmEncrypt(globalKey, textString: string): Promisestring {let cipherAlgName AES256|GCM|PKCS7;let cipher;let cipherText: string;let globalGcmParams genGcmParamsSpec();let aesEncryptJsonStr null;try {cipher cryptoFramework.createCipher(cipherAlgName);Logger.info(TAG, cipher algName: ${cipher.algName});} catch (error) {Logger.error(TAG, createCipher failed, ${error.code}, ${error.message});return aesEncryptJsonStr;}let mode cryptoFramework.CryptoMode.ENCRYPT_MODE;try {await cipher.init(mode, globalKey, globalGcmParams);} catch (error) {Logger.error(TAG, init cipher failed, ${error.code}, ${error.message});return aesEncryptJsonStr;}let plainText { data: stringToUint8Array(textString) };Logger.info(TAG, plain text: ${plainText.data});try {let cipherTextBlob await cipher.update(plainText);let tmpArr: Uint8Array cipherTextBlob.data;cipherText uint8ArrayToShowStr(tmpArr);Logger.info(TAG, cipher text: ${cipherText});} catch (error) {Logger.error(TAG, update cipher failed, ${error.code}, ${error.message});return aesEncryptJsonStr;}try {let authTag await cipher.doFinal(null);let tmoTagArr: Uint8Array authTag.data;let aesEncryptJson ({ aesGcmTag: uint8ArrayToShowStr(tmoTagArr), encryptedText: cipherText });aesEncryptJsonStr JSON.stringify(aesEncryptJson);Logger.info(TAG, success, authTag blob ${authTag.data});Logger.info(TAG, success, authTag blob.length ${authTag.data.length});return aesEncryptJsonStr;} catch (error) {Logger.error(TAG, doFinal cipher failed, ${error.code}, ${error.message});return aesEncryptJsonStr;}}async aesGcmDecrypt(globalKey, aesEncryptJsonStr: string): Promisestring {let cipherAlgName AES256|GCM|PKCS7;let decode;let plainTextBlob;let plainText: string;let aesEncryptJson;try {aesEncryptJson JSON.parse(aesEncryptJsonStr);} catch (error) {Logger.error(TAG, trans from json string failed, ${error.code}, ${error.message});return null;}let authTagStr: string aesEncryptJson.aesGcmTag;let textString: string aesEncryptJson.encryptedText;let globalGcmParams genGcmParamsSpec();globalGcmParams.authTag { data: fromHexString(authTagStr) };Logger.info(TAG, success, decrypt authTag string authTagStr);Logger.info(TAG, success, decrypt authTag blob globalGcmParams.authTag.data);Logger.info(TAG, success, decrypt authTag blob.length globalGcmParams.authTag.data.length);try {decode cryptoFramework.createCipher(cipherAlgName);} catch (error) {Logger.error(TAG, createCipher failed, ${error.code}, ${error.message});return null;}let mode cryptoFramework.CryptoMode.DECRYPT_MODE;try {await decode.init(mode, globalKey, globalGcmParams);} catch (error) {Logger.error(TAG, init decode failed, ${error.code}, ${error.message});return null;}let cipherText { data: fromHexString(textString) };Logger.info(TAG, success, cipher text: ${cipherText.data});try {plainTextBlob await decode.update(cipherText);let tmpArr: Uint8Array plainTextBlob.data;plainText arrayBufferToString(tmpArr);Logger.info(TAG, success, plain text: ${plainText});} catch (error) {Logger.error(TAG, update decode failed, ${error.code}, ${error.message});return null;}try {let finalOut await decode.doFinal(null);} catch (error) {Logger.error(TAG, doFinal decode failed, ${error.code}, ${error.message});return null;}return plainText;}async aesConvertAndEncrypt(aesKeyBlobString: string, textString: string): Promisestring {let aesEncryptJsonStr ;try {let key await this.convertAesKey(aesKeyBlobString);try {aesEncryptJsonStr await this.aesGcmEncrypt(key, textString);} catch (error) {Logger.error(TAG, encrypt error, ${error.code}, ${error.message});}} catch (error) {Logger.error(TAG, convert key error, ${error.code}, ${error.message});return null;}return aesEncryptJsonStr;}async aesConvertAndDecrypt(aesKeyBlobString: string, textString: string): Promisestring {let plainText ;try {let key await this.convertAesKey(aesKeyBlobString);try {plainText await this.aesGcmDecrypt(key, textString);} catch (error) {Logger.error(TAG, encrypt error, ${error.code}, ${error.message});}} catch (error) {Logger.error(TAG, convert key error, ${error.code}, ${error.message});return null;}return plainText;}async generateRsaKey(): Promisestring {// 创建非对称密钥生成器let rsaKeyGenerator;let jsonStr;// 创建对称密钥生成器try {rsaKeyGenerator cryptoFramework.createAsyKeyGenerator(RSA3072);} catch (error) {Logger.error(TAG, create generator failed);return null;}// 通过密钥生成器随机生成非对称密钥try {// 通过密钥生成器随机生成非对称密钥let keyPair await rsaKeyGenerator.generateKeyPair();// 获取非对称密钥的二进制数据let encodedPriKey keyPair.priKey.getEncoded();let priKeyData: Uint8Array encodedPriKey.data;let encodedPubKey keyPair.pubKey.getEncoded();let pubKeyData: Uint8Array encodedPubKey.data;let rsaKeyJson ({ priKey: uint8ArrayToShowStr(priKeyData), pubKey: uint8ArrayToShowStr(pubKeyData) });jsonStr JSON.stringify(rsaKeyJson);Logger.info(TAG, success, key string: jsonStr.length);return jsonStr;} catch (error) {Logger.error(TAG, create symKey failed);return null;}}async convertRsaKey(rsaJsonString: string): PromisecryptoFramework.KeyPair {let rsaKeyGenerator cryptoFramework.createAsyKeyGenerator(RSA3072);Logger.info(TAG, success, read key string rsaJsonString.length);let jsonRsaKeyBlob;try {jsonRsaKeyBlob JSON.parse(rsaJsonString);} catch (error) {Logger.error(TAG, trans from json string failed, ${error.code}, ${error.message});return null;}let priKeyStr: string jsonRsaKeyBlob.priKey;let pubKeyStr: string jsonRsaKeyBlob.pubKey;Logger.info(TAG, success, read rsa pri str priKeyStr.length);Logger.info(TAG, success, read rsa pub str pubKeyStr.length);let priKeyBlob fromHexString(priKeyStr);let pubKeyBlob fromHexString(pubKeyStr);Logger.info(TAG, success, read rsa pri blob key priKeyBlob.length);Logger.info(TAG, success, read rsa pub blob key pubKeyBlob.length);try {let key: cryptoFramework.KeyPair await rsaKeyGenerator.convertKey({ data: pubKeyBlob }, { data: priKeyBlob });return key;Logger.info(TAG, success, read and convert key);} catch (error) {Logger.error(TAG, convert rsa key failed, ${error.code}, ${error.message});return null;}}async rsaSign(globalKey, textString: string): Promisestring {let signer cryptoFramework.createSign(RSA3072|PKCS1|SHA256);let keyPair globalKey;try {await signer.init(keyPair.priKey);let signBlob stringToUint8Array(textString);try {let signedBlob await signer.sign({ data: signBlob });let tmpArr: Uint8Array signedBlob.data;Logger.info(TAG, success,RSA sign output is signedBlob.data.length);let rsaSignedBlobString uint8ArrayToShowStr(tmpArr);Logger.info(TAG, success,RSA sign string is rsaSignedBlobString);return rsaSignedBlobString;} catch (error1) {Logger.error(TAG, sign text failed, ${error1.code}, ${error1.message});return null;}} catch (error) {Logger.error(TAG, sign init failed, ${error.code}, ${error.message});return null;}}async rsaVerify(globalKey, textString: string, rsaSignedText: string): PromiseBoolean {let verifyer cryptoFramework.createVerify(RSA3072|PKCS1|SHA256);let keyPair globalKey;let signBlob stringToUint8Array(textString);let signedBlob fromHexString(rsaSignedText);Logger.info(success,RSA sign input is signBlob);Logger.info(success,RSA signed file length signedBlob.length);try {await verifyer.init(keyPair.pubKey);try {let result: Boolean await verifyer.verify({ data: signBlob }, { data: signedBlob });if (result false) {// flag false;Logger.error(TAG, RSA Verify result fail);} else {Logger.info(TAG, success, RSA Verify result success);}return result;} catch (error) {Logger.error(TAG, verify dofinal failed, ${error.code}, ${error.message});}} catch (err) {Logger.error(TAG, verify init failed, ${err.code}, ${err.message});}return null;}async rsaConvertAndSign(rsaJsonString: string, textString: string): Promisestring {let rsaSignString;try {let key await this.convertRsaKey(rsaJsonString);try {rsaSignString await this.rsaSign(key, textString);} catch (error) {Logger.error(TAG, sign error, ${error.code}, ${error.message});return null;}} catch (error) {Logger.error(TAG, convert rsa key error, ${error.code}, ${error.message});return null;}return rsaSignString;}async rsaConvertAndVerify(rsaJsonString: string, textString: string, rsaSignedText: string): PromiseBoolean {let rsaVerifyRes;try {let key await this.convertRsaKey(rsaJsonString);try {rsaVerifyRes await this.rsaVerify(key, textString, rsaSignedText);} catch (error) {Logger.error(TAG, sign error, ${error.code}, ${error.message});return null;}} catch (error) {Logger.error(TAG, convert rsa key error, ${error.code}, ${error.message});return null;}return rsaVerifyRes;}
}
对文本文件加密在[Encrypt.ets](文件中依次点击打开文件、选择密钥通过filePicker选择明文文本文件和密钥文件点击加密按钮调用加密函数实现对文本内容进行加密并将密文文件通过filePicker保存。 需要生成密钥文本文件时可以点击随机生成AES密钥通过调用cryptoFramework.symKeyGenerator生成用于加密的AES密钥并通过filePicker保存密钥文本文件。 对消息加密的过程中采用cryptoFramework.Cipher完成加密操作。
/** Copyright (c) 2023 Huawei Device Co., Ltd.* Licensed under the Apache License, Version 2.0 (the License);* you may not use this file except in compliance with the License.* You may obtain a copy of the License at** http://www.apache.org/licenses/LICENSE-2.0** Unless required by applicable law or agreed to in writing, software* distributed under the License is distributed on an AS IS BASIS,* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.* See the License for the specific language governing permissions and* limitations under the License.*/import { promptAction } from kit.ArkUI;
import Logger from ../util/Logger;
import { picker } from kit.CoreFileKit;
import { CryptoOperation } from ../cryptoframework/CryptoOperation;
import TextFileManager from ../textfilemanager/TextFileManager;const TAG: string [Crypto_Framework];Component
export struct Encrypt {State keyFileName: string ;State keyFileUri: string ;State textFileUri: string ;State textFileName: string ;State keyString: string ;State cipherText: string ;State plainText: string ;State message: string ;State createKeyUri: string ;State encryptedFileUri: string ;private CryptoOperation: CryptoOperation new CryptoOperation();build() {Stack({ alignContent: Alignment.Center }) {Column() {GridRow() {GridCol({ span: { xs: 12, sm: 12, md: 12, lg: 12 } }) {Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) {List() {ListItem() {Row() {Text($r(app.string.open_file)).fontSize(16).textAlign(TextAlign.Start).lineHeight(22)Blank()Text(this.textFileName ? $r(app.string.please_choose) : this.textFileName).fontSize(14).textAlign(TextAlign.Start).lineHeight(19)Image($r(app.media.right_arrow)).height(19vp).width(10vp).margin({ left: 9, right: 9, top: 6, bottom: 6 })}.backgroundColor(0xFFFFFF).width(100%).height(52vp).padding({ top: 4, left: 12, right: 12 })}.onClick(() {this.selectTextFileAndRead();})ListItem() {Row() {Text($r(app.string.select_key_file)).fontSize(16).textAlign(TextAlign.Start).lineHeight(22)Blank()Text(this.keyFileName ? $r(app.string.please_choose) : this.keyFileName).fontSize(14).textAlign(TextAlign.Start).lineHeight(19)Image($r(app.media.right_arrow)).height(19vp).width(10vp).margin({ left: 9, right: 9, top: 6, bottom: 6 })}.backgroundColor(0xFFFFFF).width(100%).height(48vp).padding({ left: 12, right: 12 })}.onClick(() {this.selectAesKeyFileAndRead();})}.width(100%).height(100%).borderRadius(16)}}}.height(100vp).margin({ left: 12, right: 12, bottom: 12 })GridRow() {GridCol({ span: { xs: 12, sm: 12, md: 12, lg: 12 } }) {Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) {Column() {Row() {Text($r(app.string.text_context)).fontSize(16).textAlign(TextAlign.Start).fontWeight(500).lineHeight(22)}.padding({ left: 12, right: 12 }).width(100%).height(48vp)Row() {Text() {Span(this.plainText).fontSize(16).fontWeight(400).fontColor(#182431)}.textAlign(TextAlign.Start)}.padding({ left: 12, right: 12, bottom: 4 }).width(100%).height(52vp)}.borderRadius(16).width(100%).height(100).backgroundColor(0xFFFFFF)}}}.height(100vp).margin({ left: 12, right: 12, bottom: 12 })GridRow() {GridCol({ span: { xs: 12, sm: 12, md: 12, lg: 12 } }) {Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) {Column() {Row() {Text($r(app.string.encrypted_context)).fontSize(16).textAlign(TextAlign.Start).fontWeight(500).lineHeight(22)}.padding({ left: 12, right: 12 }).width(100%).height(48vp)Row() {Text() {Span(this.cipherText).fontSize(16).fontWeight(400).fontColor(#182431)}.textAlign(TextAlign.Start)}.padding({ left: 12, right: 12, bottom: 4 }).width(100%).height(80vp)}.borderRadius(16).width(100%).height(100).backgroundColor(0xFFFFFF)}}}.height(100vp).margin({ left: 12, right: 12, bottom: 12 })Column() {GridRow() {GridCol({ span: { xs: 12, sm: 12, md: 12, lg: 12 } }) {Column() {Button() {Text($r(app.string.generate_aes_key_randomly)).fontSize(16).fontWeight(500).lineHeight(22).fontColor(#FFFFFF)}.id(encryptAesGenKey).borderRadius(20).type(ButtonType.Capsule).width(100%).height(40vp).margin({ bottom: 16 }).backgroundColor(#007DFF).onClick(() {this.genAesKey();});Button() {Text($r(app.string.encrypt)).fontSize(16).fontWeight(500).lineHeight(22).fontColor(#FFFFFF)}.borderRadius(20).id(encryptionBtn).type(ButtonType.Capsule).margin({ left: 24, right: 24 }).width(100%).height(40vp).backgroundColor(#007DFF).onClick(() {if (this.textFileUri || this.keyFileUri ) {promptAction.showToast({message: $r(app.string.null_message)});} else {this.encryptFunc();}});}}}.margin({ left: 24, right: 24 })}.width(100%).height(296vp).justifyContent(FlexAlign.End)}.width(100%).height(100%)}}async selectAesKeyFileAndRead() {let documentSelectOptions new picker.DocumentSelectOptions();documentSelectOptions.fileSuffixFilters [.txt];documentSelectOptions.maxSelectNumber 1;let uri: string ;let documentViewPicker new picker.DocumentViewPicker();await documentViewPicker.select(documentSelectOptions).then((documentSelectResult: Arraystring) {uri documentSelectResult[0];console.info(documentViewPicker.select to text file succeed and uris are: uri);}).catch((err: Error) {console.error(Invoke documentViewPicker.select failed, code is ${err}, message is ${err.message});})this.keyFileUri uri;await TextFileManager.readTextFile(this.keyFileUri);this.keyFileName TextFileManager.getName();this.keyString TextFileManager.getString();}async selectTextFileAndRead() {let documentSelectOptions new picker.DocumentSelectOptions();documentSelectOptions.fileSuffixFilters [.txt];documentSelectOptions.maxSelectNumber 1;let uri: string ;let documentViewPicker new picker.DocumentViewPicker();await documentViewPicker.select(documentSelectOptions).then((documentSelectResult: Arraystring) {uri documentSelectResult[0];console.info(documentViewPicker.select to text file succeed and uris are: uri);}).catch((err: Error) {console.error(Invoke documentViewPicker.select failed, code is ${err}, message is ${err.message});})this.textFileUri uri;await TextFileManager.readTextFile(this.textFileUri);this.textFileName TextFileManager.getName();this.plainText TextFileManager.getString();}async createTextFileAndWrite() {let documentSaveOptions new picker.DocumentSaveOptions();documentSaveOptions.newFileNames [cipherText.txt];let documentPicker new picker.DocumentViewPicker();let documentSaveResult await documentPicker.save(documentSaveOptions);this.encryptedFileUri documentSaveResult[0];await TextFileManager.writeTextFile(this.encryptedFileUri, this.cipherText);}async createKeyFileAndWrite() {let documentSaveOptions new picker.DocumentSaveOptions();documentSaveOptions.newFileNames [aesKey.txt];let documentPicker new picker.DocumentViewPicker();let documentSaveResult await documentPicker.save(documentSaveOptions);this.createKeyUri documentSaveResult[0];await TextFileManager.writeTextFile(this.createKeyUri, this.keyString);}async encryptFunc() {if (this.plainText || this.keyFileUri ) {promptAction.showToast({message: $r(app.string.null_message)});return;}try {this.cipherText await this.CryptoOperation.aesConvertAndEncrypt(this.keyString, this.plainText);} catch (error) {Logger.error(TAG, encrypt failed, ${error});promptAction.showToast({message: $r(app.string.encrypt_fail)});}if (this.cipherText || this.cipherText undefined || this.cipherText null) {promptAction.showToast({message: $r(app.string.encrypt_fail)});return;} else {try {await this.createTextFileAndWrite();} catch (error) {Logger.error(TAG, encrypt failed, ${error});}}if (this.encryptedFileUri || typeof (this.encryptedFileUri) undefined) {promptAction.showToast({message: $r(app.string.encrypt_fail)});} else {promptAction.showToast({message: $r(app.string.encrypt_success)});}}async genAesKey() {try {this.keyString await this.CryptoOperation.generateAesKey();} catch (error) {Logger.error(TAG, gen aes key failed, ${error});}if (this.keyString || typeof (this.keyString) undefined) {promptAction.showToast({message: $r(app.string.gen_key_fail)});return;} else {try {await this.createKeyFileAndWrite();} catch (error) {Logger.error(TAG, write aes key failed, ${error});}}if (this.createKeyUri || typeof (this.createKeyUri) undefined) {promptAction.showToast({message: $r(app.string.gen_key_fail)});} else {promptAction.showToast({message: $r(app.string.gen_key_success)});}}
}
对文本文件解密在[Decrypt.ets] 文件中依次点击打开文件、选择密钥通过filePicker选择密文文本文件和密钥文件点击解密按钮调用解密函数实现对文本内容进行解密并将明文文件通过filePicker保存。 对消息解密的过程中采用cryptoFramework.Cipher完成解密操作。
/** Copyright (c) 2023 Huawei Device Co., Ltd.* Licensed under the Apache License, Version 2.0 (the License);* you may not use this file except in compliance with the License.* You may obtain a copy of the License at** http://www.apache.org/licenses/LICENSE-2.0** Unless required by applicable law or agreed to in writing, software* distributed under the License is distributed on an AS IS BASIS,* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.* See the License for the specific language governing permissions and* limitations under the License.*/import { promptAction } from kit.ArkUI;
import Logger from ../util/Logger;
import { picker } from kit.CoreFileKit;
import { CryptoOperation } from ../cryptoframework/CryptoOperation;
import TextFileManager from ../textfilemanager/TextFileManager;const TAG: string [Crypto_Framework];Component
export struct Decrypt {State keyFileName: string ;State keyFileUri: string ;State textFileUri: string ;State textFileName: string ;State keyString: string ;State cipherText: string ;State plainText: string ;State message: string ;State decryptedFileUri: string ;private CryptoOperation: CryptoOperation new CryptoOperation();build() {Stack({ alignContent: Alignment.Center }) {Column() {GridRow() {GridCol({ span: { xs: 12, sm: 12, md: 12, lg: 12 } }) {Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) {List() {ListItem() {Row() {Text($r(app.string.open_file)).fontSize(16).textAlign(TextAlign.Start).lineHeight(22)Blank()Text(this.textFileName ? $r(app.string.please_choose) : this.textFileName).fontSize(14).textAlign(TextAlign.Start).lineHeight(19)Image($r(app.media.right_arrow)).height(19vp).width(10vp).margin({ left: 9, right: 9, top: 6, bottom: 6 })}.backgroundColor(0xFFFFFF).width(100%).height(52vp).padding({ top: 4, left: 12, right: 12 })}.onClick(() {this.selectTextFileAndRead();})ListItem() {Row() {Text($r(app.string.select_key_file)).fontSize(16).textAlign(TextAlign.Start).lineHeight(22)Blank()Text(this.keyFileName ? $r(app.string.please_choose) : this.keyFileName).fontSize(14).textAlign(TextAlign.Start).lineHeight(19)Image($r(app.media.right_arrow)).height(19vp).width(10vp).margin({ left: 9, right: 9, top: 6, bottom: 6 })}.backgroundColor(0xFFFFFF).width(100%).height(48vp).padding({ left: 12, right: 12 })}.onClick(() {this.selectAesKeyFileAndRead();})}.width(100%).height(100%).borderRadius(16)}}}.height(100vp).margin({ left: 12, right: 12, bottom: 12 })GridRow() {GridCol({ span: { xs: 12, sm: 12, md: 12, lg: 12 } }) {Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) {Column() {Row() {Text($r(app.string.text_context)).fontSize(16).textAlign(TextAlign.Start).fontWeight(500).lineHeight(22)}.padding({ left: 12, right: 12 }).width(100%).height(48vp)Row() {Text() {Span(this.cipherText).fontSize(16).fontWeight(400).fontColor(#182431)}.textAlign(TextAlign.Start)}.padding({ left: 12, right: 12, bottom: 4 }).width(100%).height(52vp)}.borderRadius(16).width(100%).height(100).backgroundColor(0xFFFFFF)}}}.height(100vp).margin({ left: 12, right: 12, bottom: 12 })GridRow() {GridCol({ span: { xs: 12, sm: 12, md: 12, lg: 12 } }) {Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) {Column() {Row() {Text($r(app.string.decrypted_context)).fontSize(16).textAlign(TextAlign.Start).fontWeight(500).lineHeight(22)}.padding({ left: 12, right: 12 }).width(100%).height(48vp)Row() {Text() {Span(this.plainText).fontSize(16).fontWeight(400).fontColor(#182431)}.textAlign(TextAlign.Start)}.padding({ left: 12, right: 12, bottom: 4 }).width(100%).height(52vp)}.borderRadius(16).width(100%).height(100).backgroundColor(0xFFFFFF)}}}.height(100vp).margin({ left: 12, right: 12, bottom: 12 })Column() {GridRow() {GridCol({ span: { xs: 12, sm: 12, md: 12, lg: 12 } }) {Column() {Button() {Text($r(app.string.decrypt)).fontSize(16).fontWeight(500).lineHeight(22).fontColor(#FFFFFF)}.borderRadius(20).id(decryptionBtn).type(ButtonType.Capsule).margin({ left: 24, right: 24 }).width(100%).height(40vp).backgroundColor(#007DFF).onClick(() {if (this.textFileUri || this.keyFileUri ) {promptAction.showToast({message: $r(app.string.null_message)});} else {this.decryptFunc();}});}}}.margin({ left: 24, right: 24 })}.width(100%).height(296vp).justifyContent(FlexAlign.End)}.width(100%).height(100%)}}async selectAesKeyFileAndRead() {let documentSelectOptions new picker.DocumentSelectOptions();documentSelectOptions.fileSuffixFilters [.txt];documentSelectOptions.maxSelectNumber 1;let uri: string ;let documentViewPicker new picker.DocumentViewPicker();await documentViewPicker.select(documentSelectOptions).then((documentSelectResult: Arraystring) {uri documentSelectResult[0];console.info(documentViewPicker.select to text file succeed and uris are: uri);}).catch((err: Error) {console.error(Invoke documentViewPicker.select failed, code is ${err}, message is ${err.message});})this.keyFileUri uri;await TextFileManager.readTextFile(this.keyFileUri);this.keyFileName TextFileManager.getName();this.keyString TextFileManager.getString();}async selectTextFileAndRead() {let documentSelectOptions new picker.DocumentSelectOptions();documentSelectOptions.fileSuffixFilters [.txt];documentSelectOptions.maxSelectNumber 1;let uri: string ;let documentViewPicker new picker.DocumentViewPicker();await documentViewPicker.select(documentSelectOptions).then((documentSelectResult: Arraystring) {uri documentSelectResult[0];console.info(documentViewPicker.select to text file succeed and uris are: uri);}).catch((err: Error) {console.error(Invoke documentViewPicker.select failed, code is ${err}, message is ${err.message});})this.textFileUri uri;await TextFileManager.readTextFile(this.textFileUri);this.textFileName TextFileManager.getName();this.cipherText TextFileManager.getString();}async createTextFileAndWrite() {let documentSaveOptions new picker.DocumentSaveOptions();documentSaveOptions.newFileNames [plainText.txt];let documentPicker new picker.DocumentViewPicker();let documentSaveResult await documentPicker.save(documentSaveOptions);this.decryptedFileUri documentSaveResult[0];await TextFileManager.writeTextFile(this.decryptedFileUri, this.plainText);}async decryptFunc() {if (this.cipherText || this.keyFileUri ) {promptAction.showToast({message: $r(app.string.null_message)});return;}try {this.plainText await this.CryptoOperation.aesConvertAndDecrypt(this.keyString, this.cipherText);} catch (error) {Logger.error(TAG, decrypt failed, ${error});promptAction.showToast({message: $r(app.string.decrypt_fail)});return;}if (this.plainText || this.plainText null || this.plainText undefined) {promptAction.showToast({message: $r(app.string.decrypt_fail)});return;} else {try {await this.createTextFileAndWrite();} catch (error) {Logger.error(TAG, decrypt failed, ${error});}}if (this.decryptedFileUri || typeof (this.decryptedFileUri) undefined) {promptAction.showToast({message: $r(app.string.decrypt_fail)});} else {promptAction.showToast({message: $r(app.string.decrypt_success)});}}
}
对文本文件签名在[Sign.ets] 文件中依次点击打开文件、选择密钥通过filePicker选择待签名文本文件和密钥文件点击签名按钮调用签名函数实现对文本内容进行加密并将签名文件通过filePicker保存。 需要生成密钥文本文件时可以点击随机生成RSA密钥通过调用cryptoFramework.asyKeyGenerator生成用于签名的RSA密钥并通过filePicker保存密钥文本文件。 对消息签名的过程中采用cryptoFramework.Sign完成加密操作。
/** Copyright (c) 2023 Huawei Device Co., Ltd.* Licensed under the Apache License, Version 2.0 (the License);* you may not use this file except in compliance with the License.* You may obtain a copy of the License at** http://www.apache.org/licenses/LICENSE-2.0** Unless required by applicable law or agreed to in writing, software* distributed under the License is distributed on an AS IS BASIS,* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.* See the License for the specific language governing permissions and* limitations under the License.*/import { promptAction } from kit.ArkUI;
import Logger from ../util/Logger;
import { picker } from kit.CoreFileKit;
import { CryptoOperation } from ../cryptoframework/CryptoOperation;
import TextFileManager from ../textfilemanager/TextFileManager;const TAG: string [Crypto_Framework];Component
export struct Sign {State keyFileName: string ;State keyFileUri: string ;State textFileUri: string ;State textFileName: string ;State keyString: string ;State cipherText: string ;State plainText: string ;State message: string ;State signFileUri: string ;State createKeyUri: string ;private CryptoOperation: CryptoOperation new CryptoOperation();build() {Stack({ alignContent: Alignment.Center }) {Column() {GridRow() {GridCol({ span: { xs: 12, sm: 12, md: 12, lg: 12 } }) {Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) {List() {ListItem() {Row() {Text($r(app.string.open_file)).fontSize(16).textAlign(TextAlign.Start).lineHeight(22)Blank()Text(this.textFileName ? $r(app.string.please_choose) : this.textFileName).fontSize(14).textAlign(TextAlign.Start).lineHeight(19)Image($r(app.media.right_arrow)).height(19vp).width(10vp).margin({ left: 9, right: 9, top: 6, bottom: 6 })}.backgroundColor(0xFFFFFF).width(100%).height(52vp).padding({ top: 4, left: 12, right: 12 })}.onClick(() {this.selectTextFileAndRead();})ListItem() {Row() {Text($r(app.string.select_key_file)).fontSize(16).textAlign(TextAlign.Start).lineHeight(22)Blank()Text(this.keyFileName ? $r(app.string.please_choose) : this.keyFileName).fontSize(14).textAlign(TextAlign.Start).lineHeight(19)Image($r(app.media.right_arrow)).height(19vp).width(10vp).margin({ left: 9, right: 9, top: 6, bottom: 6 })}.backgroundColor(0xFFFFFF).width(100%).height(48vp).padding({ left: 12, right: 12 })}.onClick(() {this.selectRsaKeyFileAndRead();})}.width(100%).height(100%).borderRadius(16)}}}.height(100vp).margin({ left: 12, right: 12, bottom: 12 })GridRow() {GridCol({ span: { xs: 12, sm: 12, md: 12, lg: 12 } }) {Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) {Column() {Row() {Text($r(app.string.text_context)).fontSize(16).textAlign(TextAlign.Start).fontWeight(500).lineHeight(22)}.padding({ left: 12, right: 12 }).width(100%).height(48vp)Row() {Text() {Span(this.plainText).fontSize(16).fontWeight(400).fontColor(#182431)}.textAlign(TextAlign.Start)}.padding({ left: 12, right: 12, bottom: 4 }).width(100%).height(52vp)}.borderRadius(16).width(100%).height(100).backgroundColor(0xFFFFFF)}}}.height(100vp).margin({ left: 12, right: 12, bottom: 12 })Column() {GridRow() {GridCol({ span: { xs: 12, sm: 12, md: 12, lg: 12 } }) {Column() {Button() {Text($r(app.string.generate_rsa_key_randomly)).fontSize(16).fontWeight(500).lineHeight(22).fontColor(#FFFFFF)}.id(encryptRsaGenKey).borderRadius(20).type(ButtonType.Capsule).width(100%).height(40vp).margin({ bottom: 16 }).backgroundColor(#007DFF).onClick(() {this.genRsaKey();});Button() {Text($r(app.string.sign)).fontSize(16).fontWeight(500).lineHeight(22).fontColor(#FFFFFF)}.borderRadius(20).id(signBtn).type(ButtonType.Capsule).margin({ left: 24, right: 24 }).width(100%).height(40vp).backgroundColor(#007DFF).onClick(() {if (this.textFileUri || this.keyFileUri ) {promptAction.showToast({message: $r(app.string.null_message)});} else {this.signFunc();}});}}}.margin({ left: 24, right: 24 })}.width(100%).height(412vp).justifyContent(FlexAlign.End)}.width(100%).height(100%)}}async selectRsaKeyFileAndRead() {let documentSelectOptions new picker.DocumentSelectOptions();documentSelectOptions.fileSuffixFilters [.txt];documentSelectOptions.maxSelectNumber 1;let uri: string ;let documentViewPicker new picker.DocumentViewPicker();await documentViewPicker.select(documentSelectOptions).then((documentSelectResult: Arraystring) {uri documentSelectResult[0];console.info(documentViewPicker.select to text file succeed and uris are: uri);}).catch((err: Error) {console.error(Invoke documentViewPicker.select failed, code is ${err}, message is ${err.message});})this.keyFileUri uri;// 获取到密钥文档文件的文件名称await TextFileManager.readTextFile(this.keyFileUri);this.keyFileName TextFileManager.getName();this.keyString TextFileManager.getString();}async selectTextFileAndRead() {let documentSelectOptions new picker.DocumentSelectOptions();documentSelectOptions.fileSuffixFilters [.txt];documentSelectOptions.maxSelectNumber 1;let uri: string ;let documentViewPicker new picker.DocumentViewPicker();await documentViewPicker.select(documentSelectOptions).then((documentSelectResult: Arraystring) {uri documentSelectResult[0];console.info(documentViewPicker.select to text file succeed and uris are: uri);}).catch((err: Error) {console.error(Invoke documentViewPicker.select failed, code is ${err}, message is ${err.message});})// 获取到文档文件的URIthis.textFileUri uri;// 获取到文档文件的文件名称await TextFileManager.readTextFile(this.textFileUri);this.textFileName TextFileManager.getName();this.plainText TextFileManager.getString();}async createTextFileAndWrite() {let documentSaveOptions new picker.DocumentSaveOptions();documentSaveOptions.newFileNames [signText.txt];let documentPicker new picker.DocumentViewPicker();let documentSaveResult await documentPicker.save(documentSaveOptions);this.signFileUri documentSaveResult[0];await TextFileManager.writeTextFile(this.signFileUri, this.cipherText);}async createKeyFileAndWrite() {let documentSaveOptions new picker.DocumentSaveOptions();documentSaveOptions.newFileNames [rsaKey.txt];let documentPicker new picker.DocumentViewPicker();try {let documentSaveResult await documentPicker.save(documentSaveOptions);this.createKeyUri documentSaveResult[0];await TextFileManager.writeTextFile(this.createKeyUri, this.keyString);} catch (error) {Logger.error(TAG, save key failed, ${error});}}async signFunc() {if (this.plainText || this.keyFileUri ) {promptAction.showToast({message: $r(app.string.null_message)});return;}try {this.cipherText await this.CryptoOperation.rsaConvertAndSign(this.keyString, this.plainText);} catch (error) {promptAction.showToast({message: $r(app.string.sign_fail)});Logger.error(TAG, sign failed, ${error});}if (this.cipherText || this.cipherText null || this.cipherText undefined) {promptAction.showToast({message: $r(app.string.sign_fail)});return;} else {await this.createTextFileAndWrite();}if (this.signFileUri || typeof (this.signFileUri) undefined) {promptAction.showToast({message: $r(app.string.sign_fail)});} else {promptAction.showToast({message: $r(app.string.sign_success)});}}async genRsaKey() {promptAction.showToast({message: $r(app.string.slow_rsa_key_gen)});try {this.keyString await this.CryptoOperation.generateRsaKey();} catch (error) {Logger.error(TAG, gen rsa key failed, ${error});}if (this.keyString || typeof (this.keyString) undefined) {promptAction.showToast({message: $r(app.string.gen_key_fail)});return;} else {try {await this.createKeyFileAndWrite();} catch (error) {Logger.error(TAG, write rsa key failed, ${error});}}if (this.createKeyUri || typeof (this.createKeyUri) undefined) {promptAction.showToast({message: $r(app.string.gen_key_fail)});} else {promptAction.showToast({message: $r(app.string.gen_key_success)});}}
}
对文本文件验签在[Verify.ets]文件中依次点击打开文件、选择密钥、选择签名文件通过filePicker选择密文文本文件、密钥文件和签名文件点击验签按钮调用验签函数实现对文本内容进行验签并显示验签结果。 对消息验签的过程中采用cryptoFramework.Verify完成验签操作。
/** Copyright (c) 2023 Huawei Device Co., Ltd.* Licensed under the Apache License, Version 2.0 (the License);* you may not use this file except in compliance with the License.* You may obtain a copy of the License at** http://www.apache.org/licenses/LICENSE-2.0** Unless required by applicable law or agreed to in writing, software* distributed under the License is distributed on an AS IS BASIS,* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.* See the License for the specific language governing permissions and* limitations under the License.*/import { promptAction } from kit.ArkUI;
import Logger from ../util/Logger;
import { picker } from kit.CoreFileKit;
import { CryptoOperation } from ../cryptoframework/CryptoOperation;
import TextFileManager from ../textfilemanager/TextFileManager;const TAG: string [Crypto_Framework];Component
export struct Verify {State keyFileName: string ;State keyFileUri: string ;State textFileUri: string ;State textFileName: string ;State keyString: string ;State plainText: string ;State message: string ;State signFileUri: string ;State signFileName: string ;State signText: string ;State createKeyUri: string ;private CryptoOperation: CryptoOperation new CryptoOperation();build() {Stack({ alignContent: Alignment.Center }) {Column() {GridRow() {GridCol({ span: { xs: 12, sm: 12, md: 12, lg: 12 } }) {Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) {List() {ListItem() {Row() {Text($r(app.string.open_file)).fontSize(16).textAlign(TextAlign.Start).lineHeight(22)Blank()Text(this.textFileName ? $r(app.string.please_choose) : this.textFileName).fontSize(14).textAlign(TextAlign.Start).lineHeight(19)Image($r(app.media.right_arrow)).height(19vp).width(10vp).margin({ left: 9, right: 9, top: 6, bottom: 6 })}.backgroundColor(0xFFFFFF).width(100%).height(52vp).padding({ top: 4, left: 12, right: 12 })}.onClick(() {this.selectTextFileAndRead();})ListItem() {Row() {Text($r(app.string.select_key_file)).fontSize(16).textAlign(TextAlign.Start).lineHeight(22)Blank()Text(this.keyFileName ? $r(app.string.please_choose) : this.keyFileName).fontSize(14).textAlign(TextAlign.Start).lineHeight(19)Image($r(app.media.right_arrow)).height(19vp).width(10vp).margin({ left: 9, right: 9, top: 6, bottom: 6 })}.backgroundColor(0xFFFFFF).width(100%).height(48vp).padding({ left: 12, right: 12 })}.onClick(() {this.selectRsaKeyFileAndRead();})}.width(100%).height(100%).borderRadius(16)}}}.height(100vp).margin({ left: 12, right: 12, bottom: 12 })GridRow() {GridCol({ span: { xs: 12, sm: 12, md: 12, lg: 12 } }) {Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) {List() {ListItem() {Row() {Text($r(app.string.select_signature_file)).fontSize(16).textAlign(TextAlign.Start).lineHeight(22)Blank()Text(this.signFileName ? $r(app.string.please_choose) : this.signFileName).fontSize(14).textAlign(TextAlign.Start).lineHeight(19)Image($r(app.media.right_arrow)).height(19vp).width(10vp).margin({ left: 9, right: 9, top: 6, bottom: 6 })}.backgroundColor(0xFFFFFF).width(100%).height(56vp).padding({ left: 12, right: 12, top: 4, bottom: 4 })}.onClick(() {this.selectSignFileAndRead();})}.width(100%).borderRadius(16)}}}.height(56vp).margin({ left: 12, right: 12, bottom: 12 })GridRow() {GridCol({ span: { xs: 12, sm: 12, md: 12, lg: 12 } }) {Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) {Column() {Row() {Text($r(app.string.text_context)).fontSize(16).textAlign(TextAlign.Start).fontWeight(500).lineHeight(22)}.padding({ left: 12, right: 12 }).width(100%).height(48vp)Row() {Text() {Span(this.plainText).fontSize(16).fontWeight(400).fontColor(#182431)}.textAlign(TextAlign.Start)}.padding({ left: 12, right: 12, bottom: 4 }).width(100%).height(52vp)}.borderRadius(16).width(100%).height(100).backgroundColor(0xFFFFFF)}}}.height(100vp).margin({ left: 12, right: 12, bottom: 12 })Column() {GridRow() {GridCol({ span: { xs: 12, sm: 12, md: 12, lg: 12 } }) {Column() {Button() {Text($r(app.string.verify)).fontSize(16).fontWeight(500).lineHeight(22).fontColor(#FFFFFF)}.borderRadius(20).id(verifyBtn).type(ButtonType.Capsule).margin({ left: 24, right: 24 }).width(100%).height(40vp).backgroundColor(#007DFF).onClick(() {if (this.textFileUri || this.keyFileUri || this.signFileUri ) {promptAction.showToast({message: $r(app.string.null_message)});} else {this.verifyFunc();}});}}}.margin({ left: 24, right: 24 })}.width(100%).height(340vp).justifyContent(FlexAlign.End)}.width(100%).height(100%)}}async selectRsaKeyFileAndRead() {let documentSelectOptions new picker.DocumentSelectOptions();documentSelectOptions.fileSuffixFilters [.txt];documentSelectOptions.maxSelectNumber 1;let uri: string ;let documentViewPicker new picker.DocumentViewPicker();await documentViewPicker.select(documentSelectOptions).then((documentSelectResult: Arraystring) {uri documentSelectResult[0];console.info(documentViewPicker.select to text file succeed and uris are: uri);}).catch((err: Error) {console.error(Invoke documentViewPicker.select failed, code is ${err}, message is ${err.message});})// 获取到密钥文档文件的URIthis.keyFileUri uri;// 获取到密钥文档文件的文件名称await TextFileManager.readTextFile(this.keyFileUri);this.keyFileName TextFileManager.getName();this.keyString TextFileManager.getString();}async selectTextFileAndRead() {let documentSelectOptions new picker.DocumentSelectOptions();documentSelectOptions.fileSuffixFilters [.txt];documentSelectOptions.maxSelectNumber 1;let uri: string ;let documentViewPicker new picker.DocumentViewPicker();await documentViewPicker.select(documentSelectOptions).then((documentSelectResult: Arraystring) {uri documentSelectResult[0];console.info(documentViewPicker.select to text file succeed and uris are: uri);}).catch((err: Error) {console.error(Invoke documentViewPicker.select failed, code is ${err}, message is ${err.message});})// 获取到文档文件的URIthis.textFileUri uri;// 获取到文档文件的文件名称await TextFileManager.readTextFile(this.textFileUri);this.textFileName TextFileManager.getName();this.plainText TextFileManager.getString();}async selectSignFileAndRead() {let documentSelectOptions new picker.DocumentSelectOptions();documentSelectOptions.fileSuffixFilters [.txt];documentSelectOptions.maxSelectNumber 1;let uri: string ;let documentViewPicker new picker.DocumentViewPicker();await documentViewPicker.select(documentSelectOptions).then((documentSelectResult: Arraystring) {uri documentSelectResult[0];console.info(documentViewPicker.select to text file succeed and uris are: uri);}).catch((err: Error) {console.error(Invoke documentViewPicker.select failed, code is ${err}, message is ${err.message});})// 获取到文档文件的URIthis.signFileUri uri;// 获取到文档文件的文件名称await TextFileManager.readTextFile(this.signFileUri);this.signFileName TextFileManager.getName();this.signText TextFileManager.getString();}async createKeyFileAndWrite() {let documentSaveOptions new picker.DocumentSaveOptions();documentSaveOptions.newFileNames [rsaKey.txt];let documentPicker new picker.DocumentViewPicker();try {let documentSaveResult await documentPicker.save(documentSaveOptions);this.createKeyUri documentSaveResult[0];await TextFileManager.writeTextFile(this.createKeyUri, this.keyString);} catch (error) {Logger.error(TAG, save key failed, ${error});}}async verifyFunc() {let verifyRes: Boolean false;if (this.plainText || this.keyFileUri || this.signText ) {promptAction.showToast({message: $r(app.string.null_message)});return;}try {verifyRes await this.CryptoOperation.rsaConvertAndVerify(this.keyString, this.plainText, this.signText);} catch (error) {Logger.error(TAG, verify failed, ${error});}if (verifyRes ! true) {promptAction.showToast({message: $r(app.string.verify_fail)});return;} else {promptAction.showToast({message: $r(app.string.verify_success)});}}
}
以上就是本篇文章所带来的鸿蒙开发中一小部分技术讲解想要学习完整的鸿蒙全栈技术。可以在结尾找我可全部拿到 下面是鸿蒙的完整学习路线展示如下
除此之外根据这个学习鸿蒙全栈学习路线也附带一整套完整的学习【文档视频】内容包含如下 内容包含了ArkTS、ArkUI、Stage模型、多端部署、分布式应用开发、音频、视频、WebGL、OpenHarmony多媒体技术、Napi组件、OpenHarmony内核、鸿蒙南向开发、鸿蒙项目实战等技术知识点。帮助大家在学习鸿蒙路上快速成长 鸿蒙【北向应用开发南向系统层开发】文档
鸿蒙【基础实战项目】视频
鸿蒙面经 为了避免大家在学习过程中产生更多的时间成本对比我把以上内容全部放在了↓↓↓想要的可以自拿喔谢谢大家观看
