What is Secure QR code?
{{cleanup|reason=|date=June 2018}} A '''Secure QR code''' is an extension of a [[QR code]].<ref>{{Cite journal|last1=Goel|first1=Nishant|last2=Sharma|first2=Ajay|last3=Goswami|first3=Sudhir|date=May 2017|title=A way to secure a QR code: SQR|url=https://ieeexplore.ieee.org/document/8229850|journal=2017 International Conference on Computing, Communication and Automation (ICCCA)|pages=494–497|doi=10.1109/CCAA.2017.8229850|isbn=978-1-5090-6471-7|s2cid=223083}}</ref> When a QR code is read and decoded, all the information in the code is freely accessible. There will be some redundancy, to allow for error correction. A Secure qr code allows to encrypt part or all of the information present. This means that extra information is needed, to decrypt the non-public part of the code. To decode the non-public part of the code, the device doing the decoding needs to store a key. Secure QR codes use [[symmetric cryptography]]. The key length is 8 bytes. This means that there are 2<sup>64</sup> possible values for the key. With the correct key, the device reading the Secure QR code will also decrypt it. == References == {{Reflist}} [[Category:Data input]] [[Category:Barcodes]]