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Date: 2012-09-06 08:52:58ISO standards Electronic documents Key management Portable Document Format Cryptographic Message Syntax PDF/A PKCS X.509 Digital signature Cryptography Public-key cryptography Cryptographic protocols | TechNote 0006: Digital Signatures in PDF/A-1Add to Reading ListSource URL: www.pdfa.orgDownload Document from Source WebsiteFile Size: 359,00 KBShare Document on Facebook |