HarmonyOS鸿蒙Next中如何导入pkcs8编码的sm2私钥

导入sm2密钥：

async initImportPrk(): Promise<Uint8Array> {

let _priKey: string = '28E9FA9E9D9F5E344D5A9E4BCF6509A7F39789F515AB8F92DDBCBD414D940E93'

let sk: bigint = BigInt("0x28E9FA9E9D9F5E344D5A9E4BCF6509A7F39789F515AB8F92DDBCBD414D940E93");

// 私钥对象数据

let priKey: cryptoFramework.ECPriKeySpec = {

params: this.genSM2CommonSpec(),

sk: sk,

algName: "ECC",

specType: cryptoFramework.AsyKeySpecType.PRIVATE_KEY_SPEC

}

let prk: Uint8Array = new Uint8Array();

try {

let KeyPairGenerator: cryptoFramework.AsyKeyGeneratorBySpec;

KeyPairGenerator = cryptoFramework.createAsyKeyGeneratorBySpec(priKey);

let KeyPair = await KeyPairGenerator.generatePriKey()

prk = KeyPair.getEncoded().data

} catch (err) {

let e: BusinessError = err as BusinessError;

console.error(`sync error, ${e.code}, ${e.message}`);

}

//导入密钥

let cipher = cryptoFramework.createCipher("SM2_256|SM3");

let generator = cryptoFramework.createAsyKeyGenerator("SM2_256");

let keyPair = await generator.convertKey(null, { data: prk })//导入后的密钥对（只有私钥）

return prk;

先把私钥解析成十六进制，然后参考代码中的步骤进行转换

在HarmonyOS鸿蒙Next中，导入PKCS8编码的SM2私钥可以通过使用KeyStore类来实现。首先，确保你已经将PKCS8编码的私钥转换为字节数组。然后，使用KeyStore的setEntry方法将私钥导入到密钥库中。具体步骤如下：

1. 创建KeyStore实例：

   let keyStore = cryptoFramework.createKeyStore();
   

2. 将PKCS8编码的私钥转换为字节数组：

   let pkcs8PrivateKeyData = ...; // 你的PKCS8编码的SM2私钥字节数组
   

3. 创建KeyPair对象：

   let keyPairGenerator = cryptoFramework.createAsyKeyGenerator("SM2");
   let keyPair = keyPairGenerator.convertKey(pkcs8PrivateKeyData, null, "PKCS8");
   

4. 将私钥导入KeyStore：

   let alias = "my_sm2_private_key";
   let keyParam = {
       alias: alias,
       key: keyPair.priKey,
       isUserSelectable: true
   };
   keyStore.setEntry(alias, keyParam, null);
   

通过以上步骤，你可以将PKCS8编码的SM2私钥成功导入到HarmonyOS鸿蒙Next的密钥库中。