Padeș

Padeș is a commune in Gorj County, Romania. It is composed of eight villages: Apa Neagră, Călugareni (the commune center), Cerna-Sat, Cloșani, Motru-Sec, Orzești, Padeș and Văieni.

PAdES

PAdES (PDF Advanced Electronic Signatures) is a set of restrictions and extensions to PDF and ISO 32000-1 making it suitable for advanced electronic signature. This is published by ETSI as TS 102 778.

Description

While PDF and ISO 32000-1 provide a framework for digitally signing their documents, PAdES specifies precise profiles for use with advanced electronic signature in the meaning of European Union Directive 1999/93/EC. One important benefit from PAdES is that electronically signed documents can remain valid for long periods, even if underlying cryptographic algorithms are broken.

PAdES recognizes that digitally-signed documents may be used or archived for many years – even many decades. At any time in the future, in spite of technological and other advances, it must be possible to validate the document to confirm that the signature was valid at the time it was signed – a concept known as Long-Term Validation (LTV).

The PAdES standard, ETSI Technical Specification (TS) 102 778, introduces a number of adaptations and extensions to PDF to satisfy the Directive's requirements. ETSI will feed these European-specific elements back into ISO for inclusion in the next release of the PDF standard, ISO 32000-2.