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2. PAdES - Wikipedia

   en.wikipedia.org/wiki/PAdES

   PAdES has 4 levels of verification for digital certificate, from the most simple and basic (b-b, indicating a signature was executed with a certificate that was valid on a date) to the most complex (b-LTV) allowing electronically signed documents to remain valid for long periods (long term validity) even if underlying cryptographic algorithms ...

3. Digital Signature Services - Wikipedia

   en.wikipedia.org/wiki/Digital_Signature_Services

   The profiles, recently created by ETSI and currently at OASIS, enable the specific characteristics of the AdES signature formats in combination with local and remote eIDAS-compliant signature created devices via the DSS-X interface. The additional attributes of the signatures (e.g., the embedded certificate status information, time-stamps or ...

4. Public key certificate - Wikipedia

   en.wikipedia.org/wiki/Public_key_certificate

   In cryptography, a public key certificate, also known as a digital certificate or identity certificate, is an electronic document used to prove the validity of a public key. [ 1 ] [ 2 ] The certificate includes the public key and information about it, information about the identity of its owner (called the subject), and the digital signature of ...

5. Digital signature - Wikipedia

   en.wikipedia.org/wiki/Digital_signature

   Aggregate signature – a signature scheme that supports aggregation: Given n signatures on n messages from n users, it is possible to aggregate all these signatures into a single signature whose size is constant in the number of users. This single signature will convince the verifier that the n users did indeed sign the n original messages.

6. Certificate signing request - Wikipedia

   en.wikipedia.org/wiki/Certificate_signing_request

   In public key infrastructure (PKI) systems, a certificate signing request (CSR or certification request) is a message sent from an applicant to a certificate authority of the public key infrastructure (PKI) in order to apply for a digital identity certificate. The CSR usually contains the public key for which the certificate should be issued ...

7. Qualified electronic signature - Wikipedia

   en.wikipedia.org/wiki/Qualified_electronic_signature

   A qualified electronic signature is an advanced electronic signature with a qualified digital certificate that has been created by a qualified signature creation device (QSCD). For an electronic signature to be considered as a qualified electronic signature, it must meet three main requirements: First, the signatory must be linked and uniquely ...