CSJournalism Digital Communication specialists Noah Echols and Clay Duda presentation about transparency vs. anonymity on the Internet at Geekend 2011 in Savannah, Ga.
Novemeber 12, 2011.
Mark Zuckerberg, founder of Facebook, argues for complete transparency (thus accountability) on the Internet. Christopher "Moot" Poole, founder of the image message board 4Chan, argues for the anonymity and the freedom it brings.
Both perspectives affect how we interact and communicate online, and increasingly within the world around us as our culture becomes more and more tech-saturated.
In this presentation Echols and Duda examine each arguments and the respective founder's real-world actions within the historical context of communication and interpersonal studies.
How has context collapse reshaped the way you communicate? Are you aware of the shift?
Click and Dragger: Denial and Deception on Android mobilegrugq
A presentation on OPSEC for mobile phones, covering the design and reasoning behind the CryptogenMod ROM and the DarkMatter app.
Source for DarkMatter: https://github.com/grugq/darkmatter
The clash of the open Internet and espionage was inevitable. Enjoy the show as we learn how espionage adapts to the fifth domain.
Video of the talk here: youtu.be/qlk4JDOiivM
Tails is an operating system like Windows or Mac OS, but one specially designed to preserve your anonymity and privacy
Tails or The Amnesic Incognito Live System is a security-focused Debian-based Linux distribution aimed at preservingprivacy and anonymity
All its outgoing connections are forced to go through Tor,[4] and direct (non-anonymous) connections are blocked
The system is designed to be booted as a live DVD or live USB, and will leave no trace (digital footprint) on the machine unless explicitly told to do so. The Tor Project has provided most of the financial support for its development
it is the latest operating system,
CSJournalism Digital Communication specialists Noah Echols and Clay Duda presentation about transparency vs. anonymity on the Internet at Geekend 2011 in Savannah, Ga.
Novemeber 12, 2011.
Mark Zuckerberg, founder of Facebook, argues for complete transparency (thus accountability) on the Internet. Christopher "Moot" Poole, founder of the image message board 4Chan, argues for the anonymity and the freedom it brings.
Both perspectives affect how we interact and communicate online, and increasingly within the world around us as our culture becomes more and more tech-saturated.
In this presentation Echols and Duda examine each arguments and the respective founder's real-world actions within the historical context of communication and interpersonal studies.
How has context collapse reshaped the way you communicate? Are you aware of the shift?
Click and Dragger: Denial and Deception on Android mobilegrugq
A presentation on OPSEC for mobile phones, covering the design and reasoning behind the CryptogenMod ROM and the DarkMatter app.
Source for DarkMatter: https://github.com/grugq/darkmatter
The clash of the open Internet and espionage was inevitable. Enjoy the show as we learn how espionage adapts to the fifth domain.
Video of the talk here: youtu.be/qlk4JDOiivM
Tails is an operating system like Windows or Mac OS, but one specially designed to preserve your anonymity and privacy
Tails or The Amnesic Incognito Live System is a security-focused Debian-based Linux distribution aimed at preservingprivacy and anonymity
All its outgoing connections are forced to go through Tor,[4] and direct (non-anonymous) connections are blocked
The system is designed to be booted as a live DVD or live USB, and will leave no trace (digital footprint) on the machine unless explicitly told to do so. The Tor Project has provided most of the financial support for its development
it is the latest operating system,
4. Анонимность и приватность
Unlinkability - невозможно определить, связаны ли две
некоторые транзакции (общий ли отправитель).
Untraceability - невозможно определить действия
участника в сети
Anonymity - невозможно идентифицировать конкретного
человека, осуществляющего транзакцию
arxiv.org/pdf/1107.4524.pdf
cryptome.org/2013/11/bitcoin-pirate-nakamoto.pdf
5. Криптографические схемы
Blind signature (Chaum, 1982)
Zero-knowledge proof (Goldwasser, Micali, Rackoff, 1985)
One-way accumulator (Benaloh, de Mare, 1993)
Ring signature (Rivest, Shamir, 2001)
http://cryptomoms.com/forum/questions/21/history-of-cryptocurrency/112/
6. Слепая подпись
Это цифровая подпись при которой
содержание сообщения “ослеплено” перед
подписью. Когда “ослепление” снимается, все
выглядит как обычная подпись.
7. Слепая подпись
Каждый может проверить подпись.
Подписывающая сторона не может соотнести запросы на
подпись и подписанные документы.
9. Алгоритм выдачи анонимных денег
1. Алиса создает случайное число – серийный номер m для
банкноты.
2. Она “ослепляет” m и предоставляет в банк
3. Банк подписывает “ослепленное” m и списывает с ее
счета $1 (считается, что все что подписал банк, равно $1)
4. Алиса снимает “ослепление” <m,sig> и может платить
банкнотой
5. Перед принятием платежа, продавец посылает банкноту
<m,sig> в банк.
6. Банк проверяет, что подпись sig is корректна и m не
было использовано ранее и начисляет $1 на счет продавца.
11. Как это работает. RSA
RSA: (me
)d
= m (mod N),
e – открытый ключ, d – личный ключ, m – сообщение, N=pq
Протокол слепой подписи:
Алисе необходимо получить подпись на сообщении m
(которая должна выглядеть как md
)
1. Алиса ослепляет сообщение: mre
(выбирая случайное r)
2. Банк подписывает: (mre
)d
=md
red
=md
r (mod N)
3. Алиса снимает ослепление: md
r/r = md
(mod N)
12. 1. masternode создает mixing пул
2. пользователи предоставляют inputs и ослепленные
outputs
3. пользователи анонимно переподключаются и
предоставляют де-ослепленные outputs
...
Blind signature позволяет доказать что предоставленые
outputs принадлежат участникам пула.
Никто не знает соответствия между input и output.