Provide steps in verifying hashes.

As mentioned before, a common use for hashes is to verify file integrity. Follow the steps below to use
SHA-2-256 hashes to verify the integrity of sample.img, a file downloaded from the Internet.

a. Along with sample.img, sample.img_SHA256.sig was also downloaded. sample.img_
SHA256.sig is a file containing the SHA-2-256 computed by the website. First, use the
cat command to display the contents of the sample.img_SHA256.sig file:
```
[analyst@secOps lab.support.files]$ cat sample.img_SHA256.sig
c56c4724c26eb0157963c0d62b76422116be31804a39c82fd44ddf0ca5013e6a
```
b. Use SHA256sum to calculate the SHA-2-256 hash of the sample.img file:
```
[analyst@secOps lab.support.files]$ sha256sum sample.img
c56c4724c26eb0157963c0d62b76422116be31804a39c82fd44ddf0ca5013e6a sample.img
```
Was the sample.img correctly downloaded? Explain.
Yes. Because both hashes match, the hash calculated before download and the one cal-
culated after, it is correct to state that no errors were introduced during download.
Note: While comparing hashes is a relatively robust method to detect transmission errors, there are
better ways to ensure the file has not been tampered with. Tools such as gpg provide a much better
method for ensuring the downloaded file has not been modified by third parties, and is in fact the file
the publisher meant to publish.