ISO IEC 16022 PDF

Classic digital signatures are typically too big the digital signature size is typically more than 2k bits to fit in barcodes and RFID tags while maintaining the desired read performance. The standard counters verification costs of online services and device to server malware attacks by providing a method for multi-device and offline verification of the data structure. The application only need to go online once to obtain the appropriate DigSig certificate, where after it can offline verify all DigSigs generated with that DigSig certificate. A DigSig stored in a barcode can be copied without influencing the data verification.

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Classic digital signatures are typically too big the digital signature size is typically more than 2k bits to fit in barcodes and RFID tags while maintaining the desired read performance. The standard counters verification costs of online services and device to server malware attacks by providing a method for multi-device and offline verification of the data structure. The application only need to go online once to obtain the appropriate DigSig certificate, where after it can offline verify all DigSigs generated with that DigSig certificate.

A DigSig stored in a barcode can be copied without influencing the data verification. For example; a birth or school certificate containing a DigSig barcode can be copied. The copied document can also be verified to contain the correct information and the issuer of the information.

A DigSig barcode provides a method to detect tampering with the data. The unique identifier of the RFID tag is used for this purpose.

The DigSig envelope structure contains the DigSig certificate identifier, the digital signature and the timestamp. Therefore the value of a b field must be collected by the verifier before verification can be performed. The verifier needs to enter the seal number for a successful verification since it is not stored in the barcode on the bottle. When the seal is broken the seal number may also be destroyed and yielded unreadable; the verification can therefore not take place since it requires the seal number.

A replacement seal must display the same seal number; using holograms and other techniques may make the generation of a new copied seal number not viable. In this case the TID is a b field. The interrogator will read the DigSig envelope from the changeable tag memory and then read the non-changeable unique TID to allow for the verification.

If the data was copied from one tag to another, then the verification process of the signed TID, as stored in the DigSig envelope, will reject the TID of the copied tag. This field value may be changed without affecting the integrity of the signed fields. This allows the DigSig Generator to digitally sign the data, store it in the DigSig envelope and compact the DigSig envelope to fit in the smallest bits size possible.

It then identifies the relevant DigSig certificate, which it uses to extract the fields from the DigSig envelope and obtain the external fields. The university certificate example illustrates the multi-language support of SANS The plate is both offline verifiable using a smartphone, when the vehicle is stopped; or using an RFID reader, when the vehicle drive past the reader.

A DigSig Verifier will therefore be able to detect data copied onto another tag. It uses a b type field, described above, to contain a secure personal identification number [PIN] remembered by the owner of the device. The verification will be negative if the PIN is incorrect. The PIN for the example is "".

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ISO/IEC 16022:2006

Fidelity of the marking and reading systems are the only limitation. Marking surfaces For industrial engineering purposes, Data Matrix codes can be marked directly onto components, ensuring that only the intended component is identified with the data-matrix-encoded data. The codes can be marked onto components with various methods, but within the aerospace industry these are commonly industrial ink-jet, dot-peen marking, laser marking, and electrolytic chemical etching ECE. These methods give a permanent mark which can last up to the lifetime of the component. Data Matrix codes are usually verified using specialist camera equipment and software.

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