Economically Optimal Variable Tag Length Message Authentication

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F17%3A00318707" target="_blank" >RIV/68407700:21230/17:00318707 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/chapter/10.1007/978-3-319-70972-7_11" target="_blank" >https://link.springer.com/chapter/10.1007/978-3-319-70972-7_11</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/978-3-319-70972-7_11" target="_blank" >10.1007/978-3-319-70972-7_11</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Economically Optimal Variable Tag Length Message Authentication

Popis výsledku v původním jazyce

Cryptographic authentication protects messages against forgeries. In real life, messages carry information of different value and the gain of the adversary in a successful forgery and the corresponding cost of the system designers, depend on the "meaning" of the message. This is easy o see by comparing the successful forgery of a $1,000 transaction with the forgery of a $1 one. Cryptographic protocols require computation and increase communication cost of the system, and an economically optimal system must optimize these costs such that message protection be commensurate to their values. This is especially important for resource limited devices that rely on battery power. A MAC (Message Authentication Code) provides protection by appending a cryptographic tag to the message. For secure MACs, the tag length is the main determinant of the security level: longer tags provide higher protection and at the same time increase the communication cost of the system. Our goal is to find the economically optimal tag lengths when messages carry information of different values.

Název v anglickém jazyce

Economically Optimal Variable Tag Length Message Authentication

Popis výsledku anglicky

Cryptographic authentication protects messages against forgeries. In real life, messages carry information of different value and the gain of the adversary in a successful forgery and the corresponding cost of the system designers, depend on the "meaning" of the message. This is easy o see by comparing the successful forgery of a $1,000 transaction with the forgery of a $1 one. Cryptographic protocols require computation and increase communication cost of the system, and an economically optimal system must optimize these costs such that message protection be commensurate to their values. This is especially important for resource limited devices that rely on battery power. A MAC (Message Authentication Code) provides protection by appending a cryptographic tag to the message. For secure MACs, the tag length is the main determinant of the security level: longer tags provide higher protection and at the same time increase the communication cost of the system. Our goal is to find the economically optimal tag lengths when messages carry information of different values.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10201 - Computer sciences, information science, bioinformathics (hardware development to be 2.2, social aspect to be 5.8)

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

21st International Conference on Financial Cryptography and Data Security

ISBN

978-3-319-70971-0

ISSN

0302-9743

e-ISSN

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Počet stran výsledku

20

Strana od-do

204-223

Název nakladatele

Springer, Cham

Místo vydání

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Místo konání akce

Malta

Datum konání akce

3. 4. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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