Saini na vakavinavinaka : vakatabu, vakayacayaca kei vakavakamacala sa saini na vakavinavinaka
E dua ena vakamacala "saini na vakavinavinaka" kei "saini na vakavinavinaka". Keda se rua e dui na nodra. E taucoko vinaka para sa vakabula kei vakavakamacala.
E dua na nodra
E saini na vakavinavinaka e dua na vakayacayaca ni vakavinavinaka (kurakura kurakura kei seritipiketi kei moka ni vakatabu) e vakatataka e idumidumi ni saini kei vakatabu. E saini na vakavinavinaka e dua na vakatabu ni vakavuvulevu e vakatataka nodra ni dua na katukana ni saini na dematikula — e saini na vakavinavinaka e dua na kena nodra e lawa. E vakayacayaca, keda Certyneo e vakatabui "saini na vakavinavinaka" e dua na saini na vakavinavinaka e taubale.
Na vakatabu e saini na vakavinavinaka ?
E saini na vakavinavinaka e dua na nodra ni vakavinavinaka e dui kina e vakatabu na vakavinavinaka. E kurakura mai e moka ni vakatabu (hash) kei kurakura kurakura e dau kena idumidumi. Se dua e kurakura dua kei kurakura dua e rawa ni vakarokoka se rua : e vakatabu se dua na rawa ni vakavavaciva, e saini e saini tiko e dau kena kurakura kurakura. E saini na vakavinavinaka e vakayacayaca ena nodra e lawa ni saini na vakavinavinaka e taucoko eIDAS.
Saini na vakavinavinaka versus saini na vakavinavinaka
E rua e vakayacayaca sara, keda se rua se dui na nodra.
| Vakacavacava | Saini na vakavinavinaka | Saini na vakavinavinaka |
|---|---|---|
| Vakatabu | Vakayacayaca ni vakavinavinaka (cryptography) | Vakatabu ni vakavuvulevu (eIDAS) |
| Nodra | E liilii : dua na vakayacayaca | Levu : nodra ni saini na dematikula |
| Vakalolomataki | Identity + integrity mathematically proven | Varies by level (SES, AES, QES) |
| Example | PAdES signature of a PDF with an X.509 certificate | "I accept" checkbox, mouse signature, digital signature with certificate |
| Legal value | Strong (equivalent to handwritten signature at AES/QES level) | Varies by chosen level |
How does digital signature work?
The process in 4 steps — simplified.
- 1
Computing the document fingerprint
The document is passed through a hash function (SHA-256). The result is a unique fingerprint of a few bytes that changes radically if even one character of the document is modified.
- 2
Encrypting the fingerprint with the private key
The fingerprint is encrypted with the signer''s private key, stored on a secure medium (HSM, smart card, or eIDAS-compliant server for remote signature).
- 3
Affixing the signature and certificate
The encrypted fingerprint is attached to the document, along with the signer''s digital certificate (which contains their public key and identity verified by a certification authority).
- 4
Verification by the recipient
The recipient uses the certificate''s public key to decrypt the signed fingerprint, then compares it to the recalculated document fingerprint. If the two match, the document is authentic and has not been modified.
When is digital signature used?
- Signing an employment contract remotely
- Validating a compliant electronic invoice
- Signing a dematerialized notarial deed
- Authenticating banking documents
- Signing a commercial contract remotely
- Validating a quote or purchase order
- Signing a lease or real estate contract
- Medical documents and patient consents
Want to digitally sign your documents?
Certyneo offers eIDAS-compliant electronic signature (using digital signature under the hood) — free up to 5 envelopes per month, no credit card required.
Frequently asked questions
Digital signature and electronic signature, are they the same thing?
No, but they are closely linked. Electronic signature is the legal concept defined by the eIDAS regulation — it designates any dematerialized signature device. Digital signature is the cryptographic technology that makes most compliant electronic signatures possible (particularly AES and QES levels).
Does digital signature have legal value?
Yes, when used within the framework of an advanced electronic signature (AES) or qualified electronic signature (QES) under eIDAS, its legal value is equivalent to that of a handwritten signature. The simple level (SES) — often a checkbox — does not have the same evidentiary force.
How to verify the authenticity of a digital signature?
Most PDF readers (Adobe Acrobat Reader, Foxit) display a signature status when a signed document is opened. You can also use the validation service of the National Agency for Information Systems Security (ANSSI) for European qualified signatures.
Do you need special software to create a digital signature?
No, not for the signer. A platform like Certyneo handles the technical part: certificate generation, fingerprint calculation, cryptographic signing, timestamping. The signer only has to click the "Sign" button in their browser.