[1] I. Government, “Law decree 83, 22-06-2012,” http://www.leggioggi.it/allegati/decreto-sviluppo-testo-dl-83-2012-convertito-legge-134-2012/, 2012.
[2] C. Petrucci, F. Gennai, M. Buzzi, and A. Vinciarelli, “Italian standard certified electronic mail: Posta elettronica certificata (pec),” in MeT 2011, 2011, pp. 1-12.
[3] P. of the Italian Republic, “Dpr 11-02-2005,” http://www.agid.gov.- it/sites/default/files/leggi decreti direttive/dpr 11-feb-2005 n.68.pdf/, 2005.
[4] I. Government, “Ministerial decree 02-11-2005,” http://www.pec.ancitel.it/allegati/02-DM 2 11 2005.pdf/, 2005.
[5] A. Tauber, “A survey of certified mail systems provided on the internet,” Computers & Security, vol. 30, no. 67, pp. 464 - 485, 2011.
[6] CNIPA, “Regole tecniche del servizio di trasmissione di documenti informatici mediante posta elettronica certificata,” http://www.agid.gov.it/sites/default/files/leggi decreti direttive/pec regole tecniche dm 2-nov-2005.pdf, 2005.
[7] IETF, “Rfc5751 - secure/multipurpose internet mail extensions (s/mime) version 3.2: Message specification,” https://www.ietf.org/rfc/rfc5751.txt, 2010.
[8] E. Union, “Directive 1999/93/ec on a community framework for electronic signatures,” http://eur-lex.europa.eu/legalcontent/EN/TXT/?uri=celex:31999L0093, 1999.
[9] --, “Regulation 910/2014 on electronic identification and trust services,” http://eur-lex.europa.eu/legalcontent/EN/TXT/?uri=uriserv:OJ.L .2014.257.01.0073.01.ENG, 2014.
[10] IETF, “Rfc5280 - internet x.509 public key infrastructure certificate and certificate revocation list (crl) profile,” https://www.ietf.org/rfc/rfc5280.txt, 2008.
[11] --, “Rfc6109 - la posta elettronica certificata - italian certified electronic mail,” http://tools.ietf.org/html/rfc6109, 2011.
[12] ETSI, “Etsi ts 102 640-1: electronic signatures and infrastructures (esi) - registered eletronic mail,” 2010.
[13] IETF, “Rfc1034 - domain names - concepts and facilities,” https://www.ietf.org/rfc/rfc1034.txt, 1987.
[14] --, “Rfc1035 - domain names - implementation and specification,” https://www.ietf.org/rfc/rfc1035.txt, 1987.
[15] --, “Rfc6698 - the dns-based authentication of named entities (dane) transport layer security (tls) protocol: Tlsa,” https://www.ietf.org/rfc/rfc6698.txt, 2012.
[16] D. group, “Using secure dns to associate certificates with domain names for s/mime - draft-ietf-dane-smime-09,” https://tools.ietf.org/html/draftietf-dane-smime-09, 2015.
[17] IETF, “Rfc4033 - dns security introduction and requirements,” https://www.ietf.org/rfc/rfc4033.txt, 2005.
[18] --, “Rfc4034 - resource records for the dns security extensions,” https://www.ietf.org/rfc/rfc4034.txt, 2005.
[19] --, “Rfc4035 - protocol modifications for the dns security extensions,” https://www.ietf.org/rfc/rfc4035.txt, 2005.
[20] D. group, “Updates to and operational guidance for the dane protocol - draft-ietf-dane-ops-16,” https://tools.ietf.org/html/draft-ietf-dane-ops-16, 2015.
[21] M. Buzzi, L. Ferrucci, F. Gennai, and C. Petrucci, “Introducing new technology into italian certified electronic mail: A proposal,” in Proceedings of TELERISE '15 workshop. IEEE Press, 2015, pp. 32-37.
[22] IETF, “Rfc4871 - domainkeys identified mail (dkim) signatures,” https://www.ietf.org/rfc/rfc4871.txt, 2007.
[23] --, “Rfc3279 - algorithms and identifiers for the internet x.509 public key infrastructure certificate and certificate revocation list (crl) profile,” https://www.ietf.org/rfc/rfc3279.txt, 2002.
[24] --, “Rfc7672 - smtp security via opportunistic dns-based authentication of named entities (dane) transport layer security (tls),” https://www.ietf.org/rfc/rfc7672.txt, 2015.
[25] --, “Saml enhanced client sasl and gss-api mechanisms,” https://tools.ietf.org/html/draft-ietf-kitten-sasl-saml-ec-12.txt, 2014.