Willi Meier Books

Fast Software Encryption

By Bimal Kumar Roy, Willi Meier

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Hash Function BLAKE

By Jean Philippe Aumasson, Luca Henzen, Raphael C. W Phan, Willi Meier

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This is a comprehensive description of the cryptographic hash function BLAKE, one of the five final contenders in the NIST SHA3 competition, and of BLAKE2, an improved version popular among develop...

Hash Function BLAKE

By Jean Philippe Aumasson, Luca Henzen, Raphael C. W Phan, Willi Meier

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Sechzig Plus

By Willi Meier

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.