• Sonuç bulunamadı

BÖLÜM 2. ALTERNATİF HABER DİLLERİ: BARIŞ GAZETECİLİĞİ VE

2.2. Alternatif Arayış İçinde Barış Gazeteciliği ve Hak Haberciliği

2.2.1. Barış Gazeteciliği: Tanımı, Niteliği ve İlkeleri

2.2.1.1. Barış Gazeteciliğine Karşı Eleştiriler ve Engeller

Arquivos de Anotação Usados nos

Experimentos

Arquivode anotação paraa transmissãoFTP

< ?xml version ="1.0" en oding="ISO

8 8 5 9

1" ?>

<!DOCTYPE proto ol

des ription SYSTEM "anota ao.dtd"> <proto ol

des ription>

<de laration>

<!

−−

De laration of different transmission types

−−

> <se urity

definition>

<global

onfiguration> <requirements>

<authenti ity level="Disabled" priority="Low" />

< onfidentiality level="Disabled" priority="Low" />

<integrity level="Disabled" priority="Low" />

<maximum

laten y priority="Low" time = "0"/>

<minimum

transmission

rate priority="Low" rate = "0" timeout="0" time

unit="Mi rose onds"/>

<maximum

byte

overhead

per

pa ket priority="Low" overhead ="0" /> </requirements> </global

onfiguration> < onfiguration n a m e="data_message"> <requirements> <authenti ity level="Mandatory" priority="High" /> < onfidentiality level="Criti al" priority="High" /> <integrity level="Mandatory" priority="High" /> </requirements> </ onfiguration>

< onfiguration n a m e="a k_message" />

</se urity

definition> </de laration>

<!

−−

Esse é um exemplo da transmissão FTP (envia dado/re ebe a k)

−−

> <transmission

model repeat="true">

<send onfiguration="data_message" />

<re eive onfiguration="a k_message" />

</transmission

model> </proto ol

des ription>

Arquivo deanotação para a transmissão uniforme

< ?xml version ="1.0" en oding="ISO

8 8 5 9

1" ?>

<!DOCTYPE proto ol

des ription SYSTEM "anota ao.dtd"> <proto ol

des ription>

<de laration>

<!

−−

De laration of different transmission types

−−

> <se urity

definition>

<global

onfiguration> <requirements>

<authenti ity level="Disabled" priority="Low" />

< onfidentiality level="Disabled" priority="Low" />

<integrity level="Disabled" priority="Low" />

<maximum

laten y priority="Low" time = "0"/>

<minimum

transmission

rate priority="Low" rate = "0" timeout="0" time

unit="Mi rose onds"/>

<maximum

byte

overhead

per

pa ket priority="Low" overhead ="0" /> </requirements> </global

onfiguration> < onfiguration n a m e="data_message"> <requirements> <authenti ity level="Mandatory" priority="High" /> < onfidentiality level="Criti al" priority="High" /> <integrity level="Mandatory" priority="High" /> </requirements> </ onfiguration>

< onfiguration n a m e="a k_message" />

</se urity

definition> </de laration>

<!

−−

Esse exemplo possui a mesma quantidade de informações importantes e s/ importân ia

−−

>

<transmission

model repeat="true"> <loop ount="2000">

< send

re eive onfiguration="data_message" /> </loop>

<loop ount="2000">

< send

re eive onfiguration="a k_message" /> </loop>

</transmission

model> </proto ol

des ription>

Arquivode anotação paraatransmissão MPEG

< ?xml version ="1.0" en oding="ISO

8 8 5 9

1" ?>

<!DOCTYPE proto ol

des ription SYSTEM "anota ao.dtd"> <proto ol

des ription>

<de laration>

<!

−−

De laration of different transmission types

−−

> <se urity

definition>

<global

onfiguration> <requirements>

<authenti ity level="Disabled" priority="Low" />

< onfidentiality level="Disabled" priority="Low" />

<integrity level="Disabled" priority="Low" />

<maximum

laten y priority="Low" time = "0"/>

<minimum

transmission

rate priority="Low" rate = "0" timeout="0" time

unit="Mi rose onds"/>

<maximum

byte

overhead

per

pa ket priority="Low" overhead ="0" /> </requirements> </global

onfiguration> < onfiguration n a m e="intrapi ture"> <requirements> <authenti ity level="Mandatory" priority="High" /> < onfidentiality level="Criti al" priority="High" /> <integrity level="Mandatory" priority="High" /> </requirements> </ onfiguration>

< onfiguration n a m e="predi ted

pi ture"> <requirements>

<authenti ity level="Desired" priority="Medium" />

< onfidentiality level="Desired" priority="Medium" />

<integrity level="Desired" priority="Medium" />

< onfiguration n a m e="bidire tional

pi ture" /> </se urity

definition>

</de laration>

<!

−−

Esse exemplo possui a mesma quantidade de informações importantes e s/ importân ia

−−

>

<transmission

model repeat="true">

< send

re eive onfiguration="intrapi ture" /> <loop ount="3">

< send

re eive onfiguration="bidire tional

pi ture" /> </loop>

< send

re eive onfiguration="predi ted

pi ture" /> <loop ount="3">

< send

re eive onfiguration="bidire tional

pi ture" /> </loop>

</transmission

model> </proto ol

des ription>

Arquivo DTDdes ritor dosarquivosXMLde anotações

<!ELEMENT proto ol

des ription (de laration,transmission

model)>

<!

−−

First part: de laration

−−

>

<!ELEMENT de laration (se urity

definition, message

definition?)>

<!

−−

Se urity Definition: kind of Se urity Configurations

−−

>

<!ELEMENT se urity

definition (global

onfiguration, onfiguration+ )>

<!ELEMENT global

onfiguration (requirements

)> <!ELEMENT onfiguration (requirements

)> <!ATTLIST onfiguration n a m e ID #REQUIRED>

<!ELEMENT requirements (authenti ity| onfidentiality|integrity|maximum

laten y|minimum

transmission

rate|retransmit

on

lost|s hedule

on

bad

onditions|maximum

byte

overhead

per

pa ket)

>

<!ELEMENT authenti ityEMPTY>

<!ATTLIST authenti ity priority (Low|Medium|High) "Medium">

<!ATTLIST authenti ity level (Disabled|Optional|Desired|Mandatory|Criti al) #REQUIRED>

<!ELEMENT onfidentiality EMPTY>

<!ATTLIST onfidentiality priority (Low|Medium|High) "Medium">

<!ATTLIST onfidentiality level (Disabled|Optional|Desired|Mandatory|Criti al) #REQUIRED>

<!ELEMENT integrity EMPTY>

<!ATTLIST integrity priority (Low|Medium|High) "Medium">

<!ATTLIST integrity level (Disabled|Optional|Desired|Mandatory|Criti al) #REQUIRED>

<!ELEMENT maximum

laten y EMPTY>

<!ATTLIST maximum

laten y priority (Low|Medium|High) "Medium"> <!ATTLIST maximum

laten y time CDATA#REQUIRED>

<!ELEMENT minimum

transmission

rate EMPTY>

<!ATTLIST minimum

transmission

rate priority (Low|Medium|High) "Medium"> <!ATTLIST minimum

transmission

rate rate CDATA#REQUIRED>

<!ATTLIST minimum

transmission

rate timeout CDATA#REQUIRED>

<!ATTLIST minimum

transmission

rate time

unit (Minutes|Se onds|Mi rose onds|Millise onds) # REQUIRED>

<!ELEMENT transmit

anywayEMPTY> <!ELEMENT retransmit

on

lost EMPTY>

<!ELEMENT s hedule

on

bad

onditions EMPTY>

<!ELEMENT maximum

byte

overhead

per

pa ketEMPTY>

<!ATTLIST maximum

byte

overhead

per

pa ket priority (Low|Medium|High) "Medium"> <!ATTLIST maximum

byte

overhead

per

pa ket overhead CDATA#REQUIRED>

<!

−−

Message Definition: kind of message omparators

−−

>

<!ELEMENT message

definition (message)

>

<!ELEMENT message (mask

omparator|size

omparator) +> <!ATTLIST message n a m e ID #REQUIRED>

<!ELEMENT mask

omparator EMPTY>

<!ATTLIST mask

omparator first

byte CDATA#REQUIRED> <!ATTLIST mask

omparator mat h

mask CDATA#REQUIRED> <!ATTLIST mask

omparator mask

size CDATA#REQUIRED> <!ATTLIST mask

omparator mat h

value CDATA#REQUIRED>

<!ELEMENT size

omparator EMPTY>

<!ATTLIST size

omparator operator (equal|less

than|less

or

equal|greater

than|greater

or

equal|different) #REQUIRED>

<!ATTLIST size

omparator value CDATA#REQUIRED>

<!

−−

Se ond part: de laration

−−

>

<!ELEMENT transmission

model (send|re eive|send

re eive|loop|if)

> <!ATTLIST transmission

model repeat (true|false) "true">

<!ELEMENT sendEMPTY>

<!ATTLIST send label ID #IMPLIED>

<!ATTLIST send onfiguration IDREF#REQUIRED>

<!ELEMENT re eive EMPTY> <!ATTLIST re eive label ID #IMPLIED> <!ATTLIST re eive onfiguration IDREF#REQUIRED> <!ELEMENT send

re eive EMPTY> <!ATTLIST send

re eive label ID #IMPLIED> <!ATTLIST send

re eive onfiguration IDREF#REQUIRED>

<!ELEMENT if (if

ondition, if

then, if

else?) >

<!ELEMENT if

ondition ( ompare

message|re eive

message|send

message) +> <!ELEMENT if

then (send|re eive|send

re eive|loop|if)

>

<!ELEMENT if

else (send|re eive|send

re eive|loop|if)

>

<!ELEMENT re eive

message EMPTY>

<!ATTLIST re eive

message n a m e IDREF#IMPLIED>

<!ELEMENT send

messageEMPTY>

<!ATTLIST send

message n a m e IDREF#IMPLIED>

<!ELEMENT loop (stop

ondition?,(send|re eive|send

re eive|loop|if)

)> <!ATTLIST loop ountCDATA#IMPLIED>

<!ELEMENT stop

ondition ( ompare

message|re eive

message|send

message) +>

<!ELEMENT ompare

message EMPTY>

<!ATTLIST ompare

message label IDREF#REQUIRED> <!ATTLIST ompare

message n a m e IDREF#REQUIRED>

Arbaugh, W. A.(2003). Wireless se urity isdierent. Computer, 36(8):99101.

Bhagyavati; Summers,W. C.e DeJoie,A.(2004). Wireless se urityte hniques: an overview.

InPro eedingsofthe1stannual onferen eonInformationse urity urri ulumdevelopment

(InfoSe CD'04),pp.8287, NewYork,NY, USA.ACMPress.

Borodin, A.eEl-Yaniv,R.(1998). Online omputation and ompetitive analysis. Cambridge

UniversityPress,New York,NY,USA.

Capra,L.;Blair,G.S.;Mas olo,C.;Emmeri h,W.eGra e,P.(2002).Exploitingree tionin

mobile omputingmiddleware. ACMSIGMOBILEMobileComputingandCommuni ations

Review, 6(4):3444.

Capra,L.;Emmeri h,W.eMas olo,C.(2001). Middlewareformobile omputing: Awareness

vs.transparen y.InPro eedingsoftheEighthWorkshoponHotTopi sinOperatingSystems

(HOTOS'01),p.164, Washington, DC,USA.IEEE ComputerSo iety.

Capra,L.;Emmeri h,W.eMas olo,C.(2003). Carisma: Context-awareree tivemiddleware

systemfor mobile appli ations. IEEE Transa tions on Software Engineering, 29(10):929

945.

Corradi, A.; Montanari, R.; Tibaldi, D. e Toninelli, A. (2005). A ontext- entri se urity

middlewareforservi eprovisioninginpervasive omputing. InPro eedingsofthe The2005

Symposium on Appli ations and the Internet (SAINT'05), pp.421429, Washington, DC,

USA.IEEE ComputerSo iety.

Costa, D. N.O. (2008). Conguração de segurança para omuni ação emambientes móveis.

Dissertaçãode mestrado aser defendidana UniversidadeFederal de Minas Gerais.

Die, W. eHellman, M. E. (1976). New dire tions in ryptography. IEEE Transa tions on

InformationTheory,IT-22(6):644654.

Foley, S. N.; Quillinan, T. B.; O'Connor, M.; Mul ahy, B. P. e Morrison, J. P. (2004). A

framework for heterogeneous middleware se urity. In Pro eedings of the 18th Internatio-

nal Parallel and Distributed Pro essing Symposium (IPDPS'04), volume 02, p. 108b, Los

Gall, D.L. (1991). Mpeg: a video ompressionstandard for multimedia appli ations. Com-

muni ations of the ACM,34(4):4658.

Gamma, E.; Helm, R.; Johnson, R. e Vlissides,J. (1995). Design Patterns. Addison-Wesley

Professional.

Gurevi h,Y.(2000). Sequential abstra t-statema hines apturesequential algorithms. ACM

Transa tions on Computational Logi , 1(1):77111.

Kahn, D. (1996). The odebreakers: the story of se ret writing. S ribner, New York, NY,

USA,revised edição.

Karygiannis, T. e Owens, L. (2002). Wireless network se urity: 802.11, Bluetooth, and

handhelddevi es. NIST Spe ial Publi ation 800-48.

Li, Z.; Xu, W.; Miller, R. e Trappe, W. (2006). Se uring wireless systems via lower layer

enfor ements. In Pro eedings of the 5th ACM workshop on Wireless se urity (WiSe'06),

pp.3342,New York,NY,USA. ACMPress.

Mas olo,C.;Capra,L.eEmmeri h,W.(2002a).Middlewareformobile omputing(asurvey).

In Tutorial Pro eedings of the International Conferen e of Networking 2002, pp. 2058.

Springer.

Mas olo, C.; Capra, L.; Za hariadis, S. e Emmeri h, W. (2002b). Xmiddle: A data-sharing

middlewarefor mobile omputing. Wireless PersonalCommuni ations, 21(1):77103.

Patiyoot, D. (2002). Se urity issues for wireless atm networks. ACM SIGOPS Operating

SystemsReview, 36(1):3157.

Patiyoot,D.eShepherd,S.J.(1999).Cryptographi se urityte hniquesforwirelessnetworks.

ACM SIGOPS Operating SystemsReview, 33(2):3650.

Peeger, S.L.ePeeger, C.P.(2006). Se urity in Computing. Prenti eHall, 4th.edição.

Potter, B.(2006). Wireless hotspots: petri dishof wireless se urity. Communi ations of the

ACM, 49(6):5056.

Ravi, S.; Raghunathan, A. e Potlapally, N.(2002). Se uring wireless data: systemar hite -

ture hallenges. In Pro eedings of the 15th international symposium on System Synthesis

(ISSS'02),pp.195200, New York,NY, USA.ACMPress.

Ro ha, B. P. S.; Rezende, C. G. e Loureiro, A. A. F. (2007). Middleware for multi- lient

and multi-server mobile appli ations. In Pro eedings of the International Symposium on

Wireless Pervasive Computing (ISWPC'07).IEEECommuni ations So iety.

Shakkottai,S.; Rappaport, T.S.eKarlsson,P.C.(O t 2003). Cross-layer design forwireless

networks. Communi ations Magazine,IEEE, 41(10):7480.

Soliman, H.S.eOmari,M.(2005). Appli ationofsyn hronousdynami en ryptionsystemin

mobilewirelessdomains. InPro eedings ofthe 1st ACM internationalworkshopon Quality

ofservi e &se urityin wireless andmobilenetworks(Q2SWinet'05),pp.2430,NewYork,

NY,USA.ACMPress.

Stallings, W. (2005). Cryptographyand Network Se urity. Prenti e Hall,4th.edição.

Tanenbaum, A.S.(2002). ComputerNetworks. Prenti e Hall PTR, 4th.edição.

Thayer Fabrega, F. J.; Herzog, J. C. e Guttman, J. D. (9-11 Jun 1998). Honest ideals on

strand spa es. Computer Se urity Foundations Workshop, 1998. Pro eedings. 11th IEEE,

pp.6677.

Tripathi, A.(2002). Challengesdesigning next-generation middleware systems. Communi a-

tionsof the ACM,45(6):3942.

Benzer Belgeler