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Formation, transmission , and validation of certified electronic mail

Francesco Gennai, Francesco [dot] Gennai [at] isti [dot] cnr [dot] it Alba Shahin, Alba [dot] Shahin [at] isti [dot] cnr [dot] it. Formation, transmission , and validation of certified electronic mail. PEC: Posta Elettronica Certificata ( Certified Electronic Mail ). What is PEC?

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Formation, transmission , and validation of certified electronic mail

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  1. Francesco Gennai, Francesco [dot] Gennai [at] isti [dot] cnr [dot] it Alba Shahin, Alba [dot] Shahin [at] isti [dot] cnr [dot] it Formation, transmission, and validation of certified electronic mail IST-CNR / CNIPA -- IETF 71

  2. PEC: Posta ElettronicaCertificata (Certified Electronic Mail) • What is PEC? • Equivalent to the Registered Mail service with Return Receipt. • Why PEC? • In 2000, the Italian Government decided to adopt electronic exchange of docs between its Public Administrations. • By the end of 2008, non-compliant administrations will have their postal financing reduced. IST-CNR / CNIPA -- IETF 71

  3. xml xml xml xml xml xml xml server-to-serverinteractionPEC domains Sender (PEC) Receiver (PEC) Provider: mailbox for take-charge receipts Take-charge receipt Access point Reception point -, Sender ID verification; -, incoming msg formal checks • Incoming msg verification: • Transport msg • Signature validity Acceptance receipt Transport Message Delivery point Verify that it’s a Transport msg Sender Mailbox Delivery receipt Recipient Mailbox IST-CNR / CNIPA -- IETF 71

  4. PEC transportmessage Original message Transport message Headings and addresses: X-Reference-Message-ID:<original message-id> Message-ID: <message ID> From: “[original sender]” <certified-email@pec-domain> Reply-to: [original-sender] Subject: CERTIFIED-MAIL: [original subject] X-transport: certified-mail X-ReceiptType: <complete/brief/synthetic> Headings and addresses Message body Human readable certification data Machine readable XML certification data { Headings and addresses Message body Digital signature IST-CNR / CNIPA -- IETF 71

  5. PEC receipt Original message Receipt Headings and addresses: X-Reference-Message-ID:<original message-id> Message-ID: <message ID> From: “[original sender]” <certified-email@pec-domain> Subject: [notification type]: [original subject] X-Receipt: <notification type> Headings and addresses Message body Human readable certification data Machine readable XML certification data { Headings and addresses Message body Digital signature IST-CNR / CNIPA -- IETF 71

  6. Characteristics • Server-to-server interaction • Client-server authentication • (server) Non-repudiation, with proof of origin • Message integrity • XML data containing certification information • Digital signature using FIPS 140-2 Hardware Security Module • Logs for all PEC operations • Formal syntax and virus checks both on outgoing and incoming messages. • Used implementations exist. IST-CNR / CNIPA -- IETF 71

  7. ISTI-CNR was asked to handle the testing of interoperability of PEC by CNIPA. • Intent of request for publication as Informational RFC. • Interest in further development. IST-CNR / CNIPA -- IETF 71

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