harmony-utils之SM4，SM4加解密

harmony-utils 簡介與說明

harmony-utils 一款功能豐富且極易上手的HarmonyOS工具庫，借助眾多實(shí)用工具類，致力于助力開發(fā)者迅速構(gòu)建鴻蒙應(yīng)用。其封裝的工具涵蓋了APP、設(shè)備、屏幕、授權(quán)、通知、線程間通信、彈框、吐司、生物認(rèn)證、用戶首選項(xiàng)、拍照、相冊(cè)、掃碼、文件、日志、異常捕獲、字符、字符串、數(shù)字、集合、日期、隨機(jī)、base64、加密、解密、JSON等一系列的功能和作，能夠滿足各種不同的開發(fā)需求。
picker_utils 是harmony-utils拆分出來的一個(gè)子庫，包含 PickerUtil、PhotoHelper、ScanUtil。

下載安裝
ohpm i @pura/harmony-utils
ohpm i @pura/picker_utils

//全局初始化方法，在UIAbility的onCreate方法中初始化 AppUtil.init()
 onCreate(want: Want, launchParam: AbilityConstant.LaunchParam): void {
   AppUtil.init(this.context);
 }

SM4 算法簡介

SM4是中國自主研發(fā)的商用對(duì)稱加密算法，由國家密碼管理局于2006年發(fā)布，2012年成為國家密碼行業(yè)標(biāo)準(zhǔn)（GM/T 0002-2012）。該算法采用128位分組長度和128位密鑰長度，通過32輪非線性迭代結(jié)構(gòu)實(shí)現(xiàn)數(shù)據(jù)加密，安全強(qiáng)度與AES-128相當(dāng)。其核心設(shè)計(jì)包含S盒替換、循環(huán)移位等作，支持ECB、CBC等標(biāo)準(zhǔn)工作模式。作為中國密碼體系（SM系列）的核心組件，SM4廣泛應(yīng)用于金融支付、電子政務(wù)、物聯(lián)網(wǎng)等領(lǐng)域，滿足國產(chǎn)密碼合規(guī)要求。算法具備高效軟硬件實(shí)現(xiàn)特性，并已通過ISO/IEC國際標(biāo)準(zhǔn)認(rèn)證（18033-3），成為我國信息安全領(lǐng)域的重要基礎(chǔ)算法。

SM4 應(yīng)用場(chǎng)景

金融支付：在銀行卡交易、移動(dòng)支付及網(wǎng)上銀行中加密敏感數(shù)據(jù)（如交易金額、賬戶信息），確保傳輸安全并符合中國金融行業(yè)密碼合規(guī)要求；
電子政務(wù)：用于電子身份證、政務(wù)系統(tǒng)數(shù)據(jù)傳輸加密，結(jié)合SM2簽名算法實(shí)現(xiàn)身份認(rèn)證與數(shù)據(jù)完整性保護(hù)；
物聯(lián)網(wǎng)安全：加密智能設(shè)備間的通信數(shù)據(jù)，防止工業(yè)級(jí)SSD、智能家居等場(chǎng)景下的數(shù)據(jù)泄露；
信創(chuàng)國產(chǎn)化替代：在信息技術(shù)應(yīng)用創(chuàng)新項(xiàng)目中替代AES算法，滿足黨政機(jī)關(guān)和關(guān)鍵基礎(chǔ)設(shè)施的自主可控需求。

API方法與使用

generateSymKey 生成對(duì)稱密鑰SymKey

let symKey1 = await SM4.generateSymKey();
let symKeyStr1 = CryptoHelper.dataBlobToStr(symKey1.getEncoded(), 'hex');
LogUtil.error(`對(duì)稱密鑰1：${symKeyStr1}`);

let symKey2 = SM4.generateSymKeySync();
let symKeyStr2 = CryptoHelper.dataBlobToStr(symKey2.getEncoded(), 'base64');
LogUtil.error(`對(duì)稱密鑰2：${symKeyStr2}`);

encryptGCM 加密（GCM模式）

let gcmParams = CryptoUtil.generateGcmParamsSpec();

let str1 = "鴻蒙技術(shù)交流QQ群：1029219059";

let smyKeyHexStr = "da4eed5a22f8883e2339c0b563161c38"; //16進(jìn)制字符串密鑰
let symKey = await CryptoUtil.getConvertSymKey('SM4_128', smyKeyHexStr, 'hex');
let dataBlob = CryptoHelper.strToDataBlob(str1, 'utf-8'); //待加密數(shù)據(jù)

let encryptDataBlob1 = await SM4.encryptGCM(dataBlob, symKey, gcmParams); //加密
let encryptStr1 = CryptoHelper.dataBlobToStr(encryptDataBlob1, 'utf-8');
LogUtil.error(`加密（GCM模式）,異步：${encryptStr1}`);

let encryptDataBlob2 = SM4.encryptGCMSync(dataBlob, symKey, gcmParams!); //加密
let encryptStr2 = CryptoHelper.dataBlobToStr(encryptDataBlob2, 'utf-8');
LogUtil.error(`加密（GCM模式）,同步：${encryptStr2}`);

decryptGCM 解密（GCM模式）

let gcmParams = CryptoUtil.generateGcmParamsSpec();

let str1 = "鴻蒙技術(shù)交流QQ群：1029219059";

let smyKeyHexStr = "da4eed5a22f8883e2339c0b563161c38"; //16進(jìn)制字符串密鑰
let symKey = await CryptoUtil.getConvertSymKey('SM4_128', smyKeyHexStr, 'hex');
let dataBlob = CryptoHelper.strToDataBlob(str1, 'utf-8'); //待加密數(shù)據(jù)

let encryptDataBlob1 = await SM4.encryptGCM(dataBlob, symKey, gcmParams!); //加密
let decryptDataBlob1 = await SM4.decryptGCM(encryptDataBlob1, symKey, gcmParams!); //解密
let decryptStr1 = CryptoHelper.dataBlobToStr(decryptDataBlob1, 'utf-8');
LogUtil.error(`解密（GCM模式）,異步：${decryptStr1}`);

let encryptDataBlob2 = SM4.encryptGCMSync(dataBlob, symKey, gcmParams!); //加密
let decryptDataBlob2 = SM4.decryptGCMSync(encryptDataBlob2, symKey, gcmParams!); //解密
let decryptStr2 = CryptoHelper.dataBlobToStr(decryptDataBlob2, 'utf-8');
LogUtil.error(`解密（GCM模式）,同步：${decryptStr2}`);

encryptCBC 加密（CBC模式）

let ivParams = CryptoUtil.generateIvParamsSpec();

let str2 = "harmony-utils，一款高效的HarmonyOS工具包，封裝了常用工具類，提供一系列簡單易用的方法。幫助開發(fā)者快速構(gòu)建鴻蒙應(yīng)用。";
let smyKeyBase64Str = "2k7tWiL4iD4jOcC1YxYcOA=="; //base64符串密鑰
let symKey = CryptoUtil.getConvertSymKeySync('SM4_128', smyKeyBase64Str, 'base64');
let dataBlob = CryptoHelper.strToDataBlob(str2, 'utf-8'); //待加密數(shù)據(jù)

let encryptDataBlob1 = await SM4.encryptCBC(dataBlob, symKey, ivParams); //加密
let encryptStr1 = CryptoHelper.dataBlobToStr(encryptDataBlob1, 'utf-8');
LogUtil.error(`加密（CBC模式）,異步：${encryptStr1}`);

let encryptDataBlob2 = SM4.encryptCBCSync(dataBlob, symKey, ivParams); //加密
let encryptStr2 = CryptoHelper.dataBlobToStr(encryptDataBlob2, 'utf-8');
LogUtil.error(`加密（CBC模式）,同步：${encryptStr2}`);

decryptCBC 解密（CBC模式）

let ivParams = CryptoUtil.generateIvParamsSpec();

let str2 = "harmony-utils，一款高效的HarmonyOS工具包，封裝了常用工具類，提供一系列簡單易用的方法。幫助開發(fā)者快速構(gòu)建鴻蒙應(yīng)用。";
et smyKeyBase64Str = "2k7tWiL4iD4jOcC1YxYcOA=="; //base64符串密鑰
let symKey = CryptoUtil.getConvertSymKeySync('SM4_128', smyKeyBase64Str, 'base64');
let dataBlob = CryptoHelper.strToDataBlob(str2, 'utf-8'); //待加密數(shù)據(jù)

let encryptDataBlob1 = await SM4.encryptCBC(dataBlob, symKey, ivParams); //加密
let decryptDataBlob1 = await SM4.decryptCBC(encryptDataBlob1, symKey, ivParams); //解密
let decryptStr1 = CryptoHelper.dataBlobToStr(decryptDataBlob1, 'utf-8');
LogUtil.error(`解密（CBC模式）,異步：${decryptStr1}`);

let encryptDataBlob2 = SM4.encryptCBCSync(dataBlob, symKey, ivParams); //加密
let decryptDataBlob2 = SM4.decryptCBCSync(encryptDataBlob2, symKey, ivParams); //解密
let decryptStr2 = CryptoHelper.dataBlobToStr(decryptDataBlob2, 'utf-8');
LogUtil.error(`解密（CBC模式）,同步：${decryptStr2}`);

encryptECB 加密（ECB模式）

let str1 = "鴻蒙技術(shù)交流QQ群：1029219059";

let smyKeyBase64Str = "2k7tWiL4iD4jOcC1YxYcOA=="; //base64符串密鑰
let symKey = CryptoUtil.getConvertSymKeySync('SM4_128', smyKeyBase64Str, 'base64');
let dataBlob = CryptoHelper.strToDataBlob(str1, 'utf-8'); //待加密數(shù)據(jù)

let encryptDataBlob1 = await SM4.encryptECB(dataBlob, symKey); //加密
let encryptStr1 = CryptoHelper.dataBlobToStr(encryptDataBlob1, 'utf-8');
LogUtil.error(`加密（ECB模式）,異步：${encryptStr1}`);

let encryptDataBlob2 = SM4.encryptECBSync(dataBlob, symKey); //加密
let encryptStr2 = CryptoHelper.dataBlobToStr(encryptDataBlob2, 'utf-8');
LogUtil.error(`加密（ECB模式）,同步：${encryptStr2}`);

decryptECB 解密（ECB模式）

let str1 = "鴻蒙技術(shù)交流QQ群：1029219059";

let smyKeyBase64Str = "2k7tWiL4iD4jOcC1YxYcOA=="; //base64符串密鑰
let symKey = CryptoUtil.getConvertSymKeySync('SM4_128', smyKeyBase64Str, 'base64');
let dataBlob = CryptoHelper.strToDataBlob(str1, 'utf-8'); //待加密數(shù)據(jù)

let encryptDataBlob1 = await SM4.encryptECB(dataBlob, symKey); //加密
let decryptDataBlob1 = await SM4.decryptECB(encryptDataBlob1, symKey); //解密
let decryptStr1 = CryptoHelper.dataBlobToStr(decryptDataBlob1, 'utf-8');
LogUtil.error(`解密（ECB模式）,異步：${decryptStr1}`);

let encryptDataBlob2 = SM4.encryptECBSync(dataBlob, symKey); //加密
let decryptDataBlob2 = SM4.decryptECBSync(encryptDataBlob2, symKey); //解密
let decryptStr2 = CryptoHelper.dataBlobToStr(decryptDataBlob2, 'utf-8');
LogUtil.error(`解密（ECB模式）,同步：${decryptStr2}`);

encryptGCMSegment 加密（GCM模式）分段

let gcmParams = CryptoUtil.generateGcmParamsSpec();

let str3 = "harmony-utils，一款高效的HarmonyOS工具包，封裝了常用工具類，提供一系列簡單易用的方法。幫助開發(fā)者快速構(gòu)建鴻蒙應(yīng)用。gitee地址：https://gitee.com/tongyuyan/harmony-utils。github主頁地址：https://github.com/787107497。";

let smyKeyHexStr = "da4eed5a22f8883e2339c0b563161c38"; //16進(jìn)制字符串密鑰
let symKey = await CryptoUtil.getConvertSymKey('SM4_128', smyKeyHexStr, 'hex');
let dataBlob = CryptoHelper.strToDataBlob(str3, 'utf-8'); //待加密數(shù)據(jù)


let encryptDataBlob1 = await SM4.encryptGCMSegment(dataBlob, symKey, gcmParams!); //加密
let encryptStr1 = CryptoHelper.dataBlobToStr(encryptDataBlob1, 'utf-8');
LogUtil.error(`分段加密（GCM模式）,異步：${encryptStr1}`);

let encryptDataBlob2 = SM4.encryptGCMSegmentSync(dataBlob, symKey, gcmParams!); //加密
let encryptStr2 = CryptoHelper.dataBlobToStr(encryptDataBlob2, 'utf-8');
LogUtil.error(`分段加密（GCM模式）,同步：${encryptStr2}`);

decryptGCMSegment 解密（GCM模式）分段

let gcmParams = CryptoUtil.generateGcmParamsSpec();

let str3 = "harmony-utils，一款高效的HarmonyOS工具包，封裝了常用工具類，提供一系列簡單易用的方法。幫助開發(fā)者快速構(gòu)建鴻蒙應(yīng)用。gitee地址：https://gitee.com/tongyuyan/harmony-utils。github主頁地址：https://github.com/787107497。";

let smyKeyHexStr = "da4eed5a22f8883e2339c0b563161c38"; //16進(jìn)制字符串密鑰
let symKey = await CryptoUtil.getConvertSymKey('SM4_128', smyKeyHexStr, 'hex');
let dataBlob = CryptoHelper.strToDataBlob(str3, 'utf-8'); //待加密數(shù)據(jù)

let encryptDataBlob1 = await SM4.encryptGCMSegment(dataBlob, symKey, gcmParams!); //加密);
let decryptDataBlob1 = await SM4.decryptGCMSegment(encryptDataBlob1, symKey, gcmParams!); //解密
let decryptStr1 = CryptoHelper.dataBlobToStr(decryptDataBlob1, 'utf-8');
LogUtil.error(`分段解密（GCM模式）,異步：${decryptStr1}`);

let encryptDataBlob2 = SM4.encryptGCMSegmentSync(dataBlob, symKey, gcmParams!); //加密
let decryptDataBlob2 = SM4.decryptGCMSegmentSync(encryptDataBlob2, symKey, gcmParams!); //解密
let decryptStr2 = CryptoHelper.dataBlobToStr(decryptDataBlob2, 'utf-8');
LogUtil.error(`分段解密（GCM模式）,同步：${decryptStr2}`);

創(chuàng)作不易，請(qǐng)給童長老點(diǎn)贊