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Comunicazione

Come comunico in maniera sicura su internet!?

#LinuxDay2014

@Gianlucode

BOB

ALICE

[email protected]

Facebook

ISP
(Telecom)

ISP
(Telecom)

In chiaro

Cifrata

HTTP

S

Secure

#LinuxDay2014

@Gianlucode

[email protected]

Chat su Facebook

#LinuxDay2014

@Gianlucode

[email protected]

Chat su Facebook

#LinuxDay2014

@Gianlucode

[email protected]

Crittografia Simmetrica

Prima attraverso un canale sicuro

Dopo su internet (non sicuro)

#LinuxDay2014

@Gianlucode

[email protected]

Crittografia Asimmetrica

#LinuxDay2014

@Gianlucode

[email protected]

Crittografia Asimmetrica

#LinuxDay2014

@Gianlucode

[email protected]

Crittografia Asimmetrica

Pubblica

Pubblica

Privata

Privata

Internet

Alice

Bob

#LinuxDay2014

@Gianlucode

[email protected]

Rappresentazione

#LinuxDay2014

@Gianlucode

Asimmetrica

Simmetrica

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Key exange SEMPLIFICATO

Internet

Alice

Bob

#LinuxDay2014

@Gianlucode

[email protected]

#LinuxDay2014

@Gianlucode

Key exange SEMPLIFICATO

I pi curiosi possono approfondire cercandoDiffie-Hellman Key Exchange

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Cos' una chiave

=

#LinuxDay2014

@Gianlucode

[email protected]

Fingerprint

Riassunto(

) = Fingerprint

#LinuxDay2014

@Gianlucode

SHA-1

[email protected]

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

27B0 013E 95F8 644D 35A5 93B0 0E07 A068 E9F0 2F91

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Fingerprint

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Le chiavi e i messaggi

#LinuxDay2014

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Ciao come stai?

OTR:AAIDAAAAAAkAAAAKAAAAwHKghsJ6HgjjSD9Za7Yuy9Jft0dfP0DKLqxme5uhRH/L74oETnZf3Y+xRXt4WbwdYpe429wpL7fiG8aEFcRYbJWhuBEvt5PuVURDSbb5JPEg3AtU3WdwWabMsKgUR9CsQd+VGDUsYqnf5Msvu3G5yIE9SZWgYrE3LxiwE7c769MMD/2uELxSN1YacONUB3gyTvvVwuCgxJx4oeL2mQuDyDMt1AGCayuQ18ZYAUB9sVQ17oRj7ZbYTA4PxgAAAAAAAAACAAAAENNcVwRCtiNdoEnSMnD0pvX+STnpa082S1SGr0ek0yAK/qg3SwAAAAA=.

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Chat su Facebook

#LinuxDay2014

@Gianlucode

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Prova Pratica

#LinuxDay2014

@Gianlucode

ora di sperimentare!

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#LinuxDay2014

@Gianlucode

Off-The-Record

ISP
(Telecom)

ISP
(Telecom)

In chiaro

Cifrata

HTTP

S

Secure

Cifratura OTR

Fingerprint

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Fine

#LinuxDay2014

@Gianlucode

Grazie per l'attenzione!

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Domande?

#LinuxDay2014

@Gianlucode

Per altri videoPer il momento pi di 50

https://www.youtube.com/user/FreeGNULinux


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