idbélyegzést

Idbélyegzés, often translated as "timestamping," is a process that associates a specific time to a digital document or data. This ensures that the data existed at a particular point in time, providing irrefutable proof of its existence and integrity. It is commonly used in digital signatures, legal documents, and various other applications where proving the chronological order or authenticity of digital information is crucial.

The core principle of idbélyegzés involves a trusted third party, known as a time-stamping authority (TSA). When a user wishes to timestamp a digital document, they send a digest (a unique digital fingerprint) of that document to the TSA. The TSA then cryptographically binds this digest with the current time and returns a signed timestamp token to the user. This token can later be used to verify that the document existed at the time indicated by the timestamp.

Idbélyegzés plays a vital role in maintaining the integrity and authenticity of digital records. Without it, it would be difficult to prove when a document was created or if it has been tampered with since its creation. This technology is essential for establishing trust in the digital world and is a fundamental component of many electronic transaction and record-keeping systems.