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  5. How Do I Check Software Package Integrity?

How Do I Check Software Package Integrity?

This section describes how to verify integrity of the DIS SDK software package on a Linux system by using a verification file.

Prerequisites

  • The PuTTY tool is available.
  • The WinSCP tool is available.

Procedure

  1. Upload the DIS SDK software package dis-sdk-1.2.3.zip to any directory on the Linux system by using WinSCP.
  2. Log in to the Linux system by using PuTTY. In the directory in which dis-sdk-1.2.3.zip is stored, run the following command to obtain the verification code of the DIS SDK software package:

    sha256sum dis-sdk-1.2.3.zip

    Example verification code:

    # sha256sum dis-sdk-1.2.3.zip
    8be2c937e8d78b1a9b99777cee4e7131f8bf231de3f839cf214e7c5b5ba3c088 dis-sdk-1.2.3.zip

  3. Open the DIS SDK verification file dis-sdk-1.2.3.zip.sha256sum and compare it with the verification code obtained in Step 2.

    • If they are consistent, it indicates that the DIS SDK software package is not tampered with.
    • If they are inconsistent, the DIS SDK software package is tampered with and you need to obtain an untampered package.