CODEWITHSUNDEEP
pdfpdf-generationsigningbiometrics
LILkillaBEE
LILkillaBEE

Reputation: 168

What tool or library can check if PDF have biometric signature data

My goal is to sign PDF and embed signature biometric data. I'll try to use https://github.com/biosignin/bsi-core for converting raw biometric data to ISO/IEC 19794-7:2007 format.

Is there any tool or library that I could use to check if new PDFs are having biometric data embedded correctly?

Upvotes: 1

Views: 1297

Answers (1)

mkl
mkl

Reputation: 95888

Is there any tool or library that I could use to check if new PDFs are having biometric data embedded correctly?

Unfortunately there does not yet seem to be a way to do that correctly.

The current PDF standard ISO 32000-1 does not specify a standard way to embed biometric data. In it you find the word "biometric" but once: The signature may be purely mathematical, such as a public/private-key encrypted document digest, or it may be a biometric form of identification, such as a handwritten signature, fingerprint, or retinal scan in section 12.8.1 (Digital Signatures / General).

ISO 19794-7 does not present a specific way to embed biometric data in PDFs either. On the contrary:

It is advisable that cryptographic techniques be used to protect the authenticity, integrity, and confidentiality of stored and transmitted biometric data; yet such provisions are beyond the scope of this part of ISO/IEC 19794.

(section 1, visible in the ISO 19794 preview)

You might want to look at existing solutions and analyze their way of doing it. You can find my first impressions of the xyzmo way in this answer.

Upvotes: 2

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