[1] RSA Laboratories' Frequently Asked Questions About Today's Cryptography. http://www.rsasecurity.com/rsalabs/faq
[2] PKI - PC Webopedia Definitions and Links. http://webopedia.internet.com/TERM/P/PKI.html
[3] A. Menezes, P. van Oorschot, e S. Vanstone. 1996. Handbook of Applied Cryptography. CRC Press. ( http://www.cacr.math.uwaterloo.ca/hac)
[4] Publi-Key Cryptography Standard. http://www.rsasecurity.com/rsalabs/pkcs
[5] Leggi e normative relative ai certificati. http://www.aipa.it/servizi[3/normativa[4/leggi[1/regfin.asp
[6] PKCS#6 http://www.rsasecurity.com/rsalabs/pkcs/pkcs-6/index.html
[7] PKCS#9 http://www.rsasecurity.com/rsalabs/pkcs/pkcs-9/index.html
[8] RSA Laboratories' Frequently Asked Questions About Today's Cryptography (Capitolo 5). http://www.rsasecurity.com/rsalabs/faq/5-3-2.html
[9] Elenco pubblico delle Autorità di Certificazione. http://www.aipa.it/attivita[2/certifica[17/index.asp (file locale)
[10] Leggi e Decreti in materia informatica. http://www.aipa.it/servizi[3/normativa[4/leggi[1/ (file locale)