HarmonyOS 鸿蒙Next AES加密时，调用symKeyGenerator.convertKey()方法报错“create C cipher fail!”

HarmonyOS 鸿蒙Next AES加密时，调用symKeyGenerator.convertKey()方法报错“create C cipher fail!”

我使用AES加密时，调用symKeyGenerator.convertKey()方法报错“create C cipher fail!”

这是我的部分代码：

static stringToUint8Array(str: string, len?: number): Uint8Array {
let arr: number[] = [];
if (len === undefined) {
len = str.length;
}
for (let i = 0; i < len; i++) {
if (str.length > i) {
arr.push(str.charCodeAt(i));
} else {
arr.push(0);
}
}
return new Uint8Array(arr);
}

static async aesECBEncrypt(plaintext: string, keytext: string): Promise<string> {
try {

let cipherAlgName = 'AES/ECB/PKCS7Padding'; // 使用标准的算法名称
let symKeyGenerator = cryptoFramework.createSymKeyGenerator('AES128');
let key = await symKeyGenerator.convertKey({ data: CiperUtils.stringToUint8Array(keytext, 16) })
let aesCiper = cryptoFramework.createCipher(cipherAlgName)
await aesCiper.init(cryptoFramework.CryptoMode.ENCRYPT_MODE, key, null)
let encoderesult = await aesCiper.doFinal({ data: CiperUtils.stringToUint8Array(plaintext) })
let base64 = new util.Base64Helper();
let result: string = base64.encodeToStringSync(encoderesult.data);
return result
} catch (error) {
return ''
}

有没有大佬帮忙分析下问题