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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: *
by nayuki 8y 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 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 https://www.nayuki.io/page/des-cipher-internals-in-excel
- vegetablepotpie 8y agoThat'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 8y agoThanks! 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-python https://www.nayuki.io/page/cryptographic-primitives-in-plain...
- deleted 8y ago[deleted]