Create QR codes in Excel

Create QR codes in Excel(blog.ambor.com)

112 points by ambanmba 7 years ago | 6 comments

nayuki 7 years ago |

The way that the author uses pure Excel formulas (no VBA or macros) to compute a QR Code from scratch is similar to how I used pure Excel to compute ciphers:

* AES cipher internals in Excel: https://www.nayuki.io/page/aes-cipher-internals-in-excel

* DES cipher internals in Excel: https://www.nayuki.io/page/des-cipher-internals-in-excel

vegetablepotpie 7 years ago | |

That's really cool. I've been wanting to delve into the inner workings of ciphers for some time and I think this will make it easier.

nayuki 7 years ago | | |

Thanks! I have another piece of work that shows the internal computations. I implemented hashes and cipher in short Python code. You can insert debugging prints easily to show the intermediate values. https://www.nayuki.io/page/cryptographic-primitives-in-plain...

userbinator 7 years ago |

(Pure) Excel is a form of dataflow programming --- the sequencing is implicit, but the flow of values is explicit. For algorithms that don't have arbitrary input-dependent looping, it is relatively easy to implement.

kerng 7 years ago |

Excel - the handy old school swiss army knife for data processing and visualization. Its pretty interesting what some folks can pull of with it.

kebman 7 years ago |

What's up with all the Excel hacks these days?