HarmonyOS AES解密，偶现出错error code:17630001

代码流程：使用系统cryptoFramework加解密框架，从sqlite数据库getBlob读数据出来解密并展示，偶现doFinal解密出错，概率较大，但是无法必现。

日志：error code:17630001 msg:doFinal failed. data:undefined stack:Cannot get SourceMap info, dump raw stack:

private readonly EN_DE_MODE = "AES128|ECB|PKCS5";
private readonly SYM_ALGORITHM_NAME = "AES128";

async decodeDict(data:Uint8Array, length:number): Promise<string> {
  let symKey = await this.genSymKey();

  // 初始化加解密操作环境
  let mode = cryptoFramework.CryptoMode.DECRYPT_MODE;
  //生成加解密生成器
  this.decryptCipher = cryptoFramework.createCipher(this.EN_DE_MODE);
  //初始化加密
  await this.decryptCipher.init(mode, symKey, null);
  //dict特殊处理
  let target:Uint8Array;
  if (length > 0 && length !== data.length) {
  target = data.slice(0, length);
} else {
  target = data;
}
//拼接需要解密的数据
let decodeObj:cryptoFramework.DataBlob = { data: target };

//解密
let finalOutput = await this.decryptCipher.doFinal(decodeObj);
return buffer.from(finalOutput.data).toString('utf-8');
}
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