How is the QR code secured?

When generating a secure digital or paper document, the unique and sensitive dataset of the document is embedded in a secure QR code (the secure mark) which is applied to each document. The QR code contains two parts:

  • The unique sensitive data to be protected (which do not need to be encrypted);
  • A Cryptographic Signature, which acts as a mathematically indisputable cryptographic link between the data to be protected and the cryptographic seal, secured by the KSI Blockchain. It is the heart of the security mechanism which protects the integrity of the sensitive data, making the QR code content impossible to tamper with or forge.
Components of a secure QR code marking