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checksum

Explainer: Error-correcting files

How to design a method which not only detects errors in file data, but enables them to be corrected? A tale of Hamming, Reed, Solomon and CDs.

June 4, 2022 Macs, Technology

Explainer: checksums, CRCs, hashes and cryptography

What are checksums, CRCs and hashes? What is required for a hash to be cryptographic, and how any of these affect your Mac? Some answers and explanations.

July 10, 2021 Macs, Technology

Dintch Support

This page is for your support questions and comments on my free file integrity checker Dintch. Full details, […]

March 25, 2020 Macs, Technology

Checking your app’s own signature

How can an app check that nothing has nobbled it? How to use its code signature to perform a simple launch test.

May 11, 2019 Macs, Technology

What to do when a disk image won’t mount

You have double-clicked on a disk image, and macOS refuses. Here is what you can do to get that image to mount, even when it’s damaged.

February 6, 2018 Macs, Technology, xattr

High quality hash

I needed a one-way method of generating a unique key for each subject name that would not permit the reverse process, of working out the name for a given key: something known as a ‘one-way hash key’.

July 8, 2015 General, Life, Macs, Technology

Guaranteeing Data Integrity

T T Read More

Businesses are often built on trust, and one of the most fundamental elements of trust must be in the accuracy of the data on your Mac. How should you ensure that your files remain true and correct?

May 11, 2015 Macs, Technology
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