Method encryptEntity

src/fsEncrypt.ts:412–445

(input: Entity)

  }

  async encryptEntity(input: Entity): Promise<Entity> {
    if (input.key === undefined) {
      // input.key should always have value
      throw Error(`input ${input.keyRaw} is abnormal without key`);
    }

    if (this.isPasswordEmpty()) {
      return copyEntityAndCopyKeyEncSizeEnc(input);
    }

    // below is for having password
    const local = cloneDeep(input);
    if (local.sizeEnc === undefined && local.size !== undefined) {
      // it's not filled yet, we fill it
      // local.size is possibly undefined if it's "prevSync" Entity
      // but local.key should always have value
      local.sizeEnc = this._getSizeFromOrigToEnc(local.size);
    }

    if (local.keyEnc === undefined || local.keyEnc === "") {
      let keyEnc = this.cacheMapOrigToEnc[input.key];
      if (keyEnc !== undefined && keyEnc !== "" && keyEnc !== local.key) {
        // we can reuse remote encrypted key if any
        local.keyEnc = keyEnc;
      } else {
        // we assign a new encrypted key because of no remote
        keyEnc = await this._encryptName(input.key);
        local.keyEnc = keyEnc;
        // remember to add back to cache!
        this.cacheMapOrigToEnc[input.key] = keyEnc;
      }
    }
    return local;
  }

  async _encryptContent(content: ArrayBuffer) {
    // console.debug("start encryptContent");