aisch03new.ppt

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2010 Pearson Education, Inc. Publishing as Prentice Hall,2010 Pearson Education, Inc. Publishing as Prentice Hall, AIS, 10/e AIS, 10/e, by Bodnar/Hopwood, by Bodnar/Hopwood 3 2

Learning Objective 2Learning Objective 2

Explain what is mean by eBusiness,Explain what is mean by eBusiness,

eCommerce, and Web Commerce.eCommerce, and Web Commerce.


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Electronic Business andElectronic Business and

Electronic CommerceElectronic Commerce

Electronic business (eBusiness) Electronic business (eBusiness) re!ers tore!ers to

the use o! I" in any aspect o! the business.the use o! I" in any aspect o! the business.

Electronic commerce (eCommerce) Electronic commerce (eCommerce) is de!ined asis de!ined asusing I" in the e#change o! products and ser$icesusing I" in the e#change o! products and ser$ices

a%ong organi&ations and indi$iduals.a%ong organi&ations and indi$iduals.

Web CommerceWeb Commerce in$ol$es using I" in the e#changein$ol$es using I" in the e#changeo! products and ser$ices a%ong indi$idualso! products and ser$ices a%ong indi$iduals

and organi&ations and o$er the Internet.and organi&ations and o$er the Internet.


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Explain the history of theExplain the history of theInternet and how it works.Internet and how it works.


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Electronic NetworksElectronic Networks

Electronic networ)s are groups o! co%putersElectronic networ)s are groups o! co%puters

that are connected together electronically.that are connected together electronically.

Local area networks Local area networks *+-s are*+-s are

networ)s that span a single site.networ)s that span a single site.

Metroolitan area networks Metroolitan area networks *-s*-s

span a single city or %etropolitan area.span a single city or %etropolitan area.


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Electronic NetworksElectronic Networks

ide area networ)s *-side area networ)s *-s

are networ)s o! co%putersare networ)s o! co%puters

that span at least twothat span at least two%etropolitan areas.%etropolitan areas.


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The Internet The Internet

"he Internet is an electronic highway that allows"he Internet is an electronic highway that allows

co%puters to co%%unicate with each other.co%puters to co%%unicate with each other.

"he earliest practical $ersion o! the Internet was"he earliest practical $ersion o! the Internet was

created in the early 10s by the Pentagon4screated in the early 10s by the Pentagon4s

d$anced 5esearch Pro6ects gency *5P.d$anced 5esearch Pro6ects gency *5P.

It was called 5P-E".It was called 5P-E".


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BitnetBitnet I+netI+net -89net -89net

"hey adopted a co%%on set o! co%%unications"hey adopted a co%%on set o! co%%unications

protocols called ":P/IP *"rans%ission :ontrol protocols called ":P/IP *"rans%ission :ontrolProtocol/Internet Protocol.Protocol/Internet Protocol.


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!ransmission Control "rotocol !ransmission Control "rotocol *":P di$ides*":P di$ides

electronic %essages into ;pac)ets< o! in!or%ationelectronic %essages into ;pac)ets< o! in!or%ation

and then reasse%bles these pac)ets at the end.and then reasse%bles these pac)ets at the end.

Internet "rotocol Internet "rotocol *IP assigns a uni=ue*IP assigns a uni=ue

address to each co%puter on the Internet.address to each co%puter on the Internet.




9i#ed IP address9i#ed IP address

>yna%ic IP address>yna%ic IP address

>o%ain na%e>o%ain na%e

>o%ain na%e ser$ers>o%ain na%e ser$ers



Intranets and ExtranetsIntranets and Extranets

It is a sel!?contained, in?house internet.It is a sel!?contained, in?house internet.

E#tranets E#tranets e#ist when the intranets o! twoe#ist when the intranets o! two

or %ore co%panies are lin)ed together,or %ore co%panies are lin)ed together,or when outsiders *such as custo%ers or suppliersor when outsiders *such as custo%ers or suppliers

are able to accessare able to access



Intranet Security IssuesIntranet Security Issues

FirewallFirewall

"he Internet"he Internet

etwork etwork computerscomputers

:orporate Intranet:orporate Intranet



Client-Server TechnologyClient-Server Technology

It is a robot?type progra% thatIt is a robot?type progra% thatconstantly runs on so%e co%putersconstantly runs on so%e co%puters

and e#changes in!or%ation withand e#changes in!or%ation with clientsclients..


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Types of Servers Types of Servers

"here are %any )inds o! ser$ers on the Internet@"here are %any )inds o! ser$ers on the Internet@

ail ser$ersail ser$ers

eb ser$erseb ser$ers

9ile ser$ers9ile ser$ers

:o%%erce ser$ers:o%%erce ser$ers

pplication ser$ers and >atabase ser$erspplication ser$ers and >atabase ser$ers


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ail 8er$er ail 8er$er

!ender"s!ender"smailmail

ser#erser#er

$ecei#er"s$ecei#er"smailmail

clientclient

!ender"s!ender"smailmail

clientclient

%essa&e%essa&erecei#errecei#er

%essa&e%essa&esendersender

$ecei#er"s$ecei#er"smailmail

ser#erser#er'he Internet'he Internet


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hat arehat are $ile ser%ers $ile ser%ersAA

9ile ser$ers e#ist %ainly9ile ser$ers e#ist %ainly

as repositories o! !iles.as repositories o! !iles.

"he %ost co%%on protocol"he %ost co%%on protocol

!or !ile ser$es is called 9"P.!or !ile ser$es is called 9"P.

!ile ser$er that uses this !ile ser$er that uses this

protocol is called an 9"P ser$er. protocol is called an 9"P ser$er.


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hat is ahat is a Web ser%er Web ser%er AA

It is a ser$er that allows a user *clientIt is a ser$er that allows a user *client

to access docu%ents and run co%puter to access docu%ents and run co%puter

progra%s that reside on re%ote co%puters. progra%s that reside on re%ote co%puters.

ll eb clients *ll eb clients *web browser web browser auto%atically auto%aticallyread and interpret H"+read and interpret H"+

*hyperte#t %ar)up language.*hyperte#t %ar)up language.


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"hey are speciali&ed types o! eb ser$ers"hey are speciali&ed types o! eb ser$erswith $arious co%%erce?related !eatures.with $arious co%%erce?related !eatures.

8upport !or $arious types o! client8upport !or $arious types o! clientand ser$er authenticationand ser$er authentication


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8upport !or inter!acing8upport !or inter!acing

with ;e#ternal< progra%swith ;e#ternal< progra%s

Enhanced security !eaturesEnhanced security !eatures

8upport !or $arious types8upport !or $arious types

o! electronic pay%entso! electronic pay%ents


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CommerceCommerce

ser#erser#erCommerceCommerce

ser#erser#er

Consumer"sConsumer"s

clientclientConsumer"sConsumer"s

clientclient

(erify(erifypaymentpayment

Bank Bank

InternetInternet

)rder*payment)rder*payment

informationinformation

EncryptedEncryptedcommunicationcommunication

link link

+roduct information+roduct informationand order #erificationand order #erification


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CorporateCorporate

accountin&accountin&

systemsystem

CorporateCorporate

accountin&accountin&

systemsystem

!hippin&!hippin&!hippin&!hippin&)rder)rder

filefile)rder)rder

filefileoods shippedoods shippedto customerto customer

CommerceCommerce

ser#erser#erCommerceCommerce

ser#erser#er


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Alication Ser%ers Alication Ser%ers andand &atabase Ser%ers &atabase Ser%ers %a)e%a)e

applications and data in databasesapplications and data in databases

a$ailable to re%ote clients.a$ailable to re%ote clients.

nn alicationalication is a so!tware progra% !or so%eis a so!tware progra% !or so%e

!unctional use such as !or!unctional use such as !or

accounting, co%%unications, or e%ail.accounting, co%%unications, or e%ail. 'atabase'atabase is an organi&ed collection o! data that isis an organi&ed collection o! data that is

structured to be use!ul to those who use it.structured to be use!ul to those who use it.

Th i d li i


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Three-tiered pplication Three-tiered pplication

rchitecturerchitecture

3 23

WebWebbrowserbrowser

-pplication-pplication!er#er!er#er

atabaseatabase!er#er!er#er

+resentation+resentationtiertier

/o&ic/o&ictiertier

ataatatiertier


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escribe Enterpriseescribe Enterprise

-rchitecture-rchitecture

and its domainsand its domains

E B i dE B i d


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E-Business andE-Business and

Enterprise rchitectureEnterprise rchitecture

3 2(

I84s ha$e e$ol$ed !ro% si%ple record)eeping andI84s ha$e e$ol$ed !ro% si%ple record)eeping and

reporting syste%s to sophisticatedreporting syste%s to sophisticated

Enterrise Alication Suite Enterrise Alication Suite *E8.*E8.

8P integrated operations, hu%an relations,8P integrated operations, hu%an relations,

and custo%er relations intoand custo%er relations into

single so!tware pac)ages calledsingle so!tware pac)ages called E" sstems E" sstems..

E5P syste%s were e#panded toE5P syste%s were e#panded to E" II E" II , and, and

ulti%ately into theulti%ately into the EAS EAS ..

E B i dE B i d


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3 2

I8 specialist needs to understandI8 specialist needs to understand

how I8 is e%bedded intohow I8 is e%bedded into

the enterprise architecture.the enterprise architecture.

Enterrise arc*itecture Enterrise arc*itecture *E describes the 6oint*E describes the 6oint

structure and beha$ior o! the enterprisestructure and beha$ior o! the enterprise

and its in!or%ation syste%.and its in!or%ation syste%.

E B i dE B i d


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3 2

"he"he enterrise arc*itectenterrise arc*itect is a person whois a person who

designs enterprise architectures to achie$edesigns enterprise architectures to achie$e

the !ollowing ob6ecti$es@the !ollowing ob6ecti$es@

lign%ent o! I" planning and strategy with business goalslign%ent o! I" planning and strategy with business goals5is) %anage%ent associated with the I85is) %anage%ent associated with the I8

pti%al use o! I8 resourcespti%al use o! I8 resources9le#ibility to adapt to I8 to changing %anage%ent needs9le#ibility to adapt to I8 to changing %anage%ent needs

E B i dE B i d


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BusinessBusiness

In!or%ationIn!or%ation

pplicationspplications

"echnical"echnical

Th C t I f tiTh C t I f ti


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The Corporate Information The Corporate Information

!actory!actory

3 2

>ata c=uisition>ata c=uisition

>ata anage%ent>ata anage%ent

>ata >eli$ery>ata >eli$ery

Th C t I f tiTh C t I f ti


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The Corporate Information The Corporate Information

!actory!actory

3 30

>ata>ata

c=uisitionc=uisition

>ata>ata

anage%entanage%ent

>ata>ata

>eli$ery>eli$ery

>ata>ata

arehousearehouse

perationalperational

>atabase>atabase

E#plorationE#ploration

arehousearehouse

>ata%art>ata%art

>ata%art>ata%art

>ata ining>ata ining

arehousearehouse

Point o! Point o! 8ale8ale

E>IE>I

E5PE5P

ther ther

perationsperations

perationsperations

InternetInternet

"ransaction Inter!ace"ransaction Inter!ace

>ecision 8upport Inter!ace>ecision 8upport Inter!ace

Plannin

gand,nalytic s

Plannin

gand,

nalytics


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The pplications rchitecture The pplications rchitecture

3 31

Alications arc*itecture Alications arc*itecture de!ines the applicationsde!ines the applicationsneeded to run the business and howneeded to run the business and how

the applications co%%unicatethe applications co%%unicate

with each other through intranets, e#tranets, and E>I.with each other through intranets, e#tranets, and E>I.

Cse an E5P or E8 !or application needsCse an E5P or E8 !or application needsCse an E5P or E8 in co%bination with other applicationsCse an E5P or E8 in co%bination with other applicationsCse so%e %i#ture o! indi$idual applicationsCse so%e %i#ture o! indi$idual applications


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The Technical rchitecture The Technical rchitecture

3 33

!ec*nical arc*itecture!ec*nical arc*itecture describes the structure anddescribes the structure and

beha$ior o! the I" in!rastructure beha$ior o! the I" in!rastructure

and de!ines standards, principles, procedures,and de!ines standards, principles, procedures,

and best practices to go$ern the I" architecture.and best practices to go$ern the I" architecture.

pplications, >atabase,pplications, >atabase,Enterprise 8yste%s anage%ent, In!or%ation,Enterprise 8yste%s anage%ent, In!or%ation,

Integration, -etwor) and :o%%, Plat!or%, 8ecurityIntegration, -etwor) and :o%%, Plat!or%, 8ecurity


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!rameworks!rameworks

3 3(

"he Dach%an 9ra%ewor) "he Dach%an 9ra%ewor)

"he 9ederal Enterprise rchitecture *9E"he 9ederal Enterprise rchitecture *9E

"he pen roup rchitecture 9ra%ewor) *"9"he pen roup rchitecture 9ra%ewor) *"9


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andand

#eference $odels#eference $odels

3 3

Business rocess $rameworks Business rocess $rameworks !ocus on!ocus on

trans!or%ing business processes,trans!or%ing business processes,

%a)ing the% better.%a)ing the% better.

Business rocess re$erence mo'el Business rocess re$erence mo'el isis

a set o! best practices !or a gi$ena set o! best practices !or a gi$en

business process or group o! processes. business process or group o! processes.


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andand

#eference $odels#eference $odels

3 3

Falue :hain 9ra%ewor)sFalue :hain 9ra%ewor)s

8upply :hain 9ra%ewor)s8upply :hain 9ra%ewor)s


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E-Business rchitecturesE-Business rchitectures

3 37

eBusiness can be $iewed as an enterprise architectureGeBusiness can be $iewed as an enterprise architectureG

that is, a gi$en set o! speci!icationsthat is, a gi$en set o! speci!ications

!or the ' architectural do%ains.!or the ' architectural do%ains.

+sterwal'er e$erence Mo'el+sterwal'er e$erence Mo'el *5 de!ines*5 de!ines

the typical business %odel in ter%s o!the typical business %odel in ter%s o!

' %a6or do%ains@' %a6or do%ains@

In!rastructure, !!ering, :usto%ers, and 9inanceIn!rastructure, !!ering, :usto%ers, and 9inance


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escribe #arious approachesescribe #arious approaches

to securin& electronicto securin& electronic

financial transactions.financial transactions.


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E-Commerce TechnologiesE-Commerce Technologies

8ecret?)ey encryption8ecret?)ey encryption

Public?)ey encryptionPublic?)ey encryption

>igital en$elopes>igital en$elopes


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Secret-%ey EncryptionSecret-%ey Encryption

!ecret key!ecret key

EncryptionEncryption%essa&e%essa&e ecryptionecryption %essa&e%essa&e


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"u&lic-%ey Encryption"u&lic-%ey Encryption

$ecipient"s public key$ecipient"s public key

EncryptionEncryption%essa&e%essa&e ecryptionecryption %essa&e%essa&eCiphertextCiphertext

$ecipient"s pri#ate key$ecipient"s pri#ate key


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'igital Envelope'igital Envelope

hat is ahat is a 'iital en%eloe'iital en%eloeAA

It is an encryption %ethod in which theIt is an encryption %ethod in which the

%essage is encrypted with a secret%essage is encrypted with a secret)ey, and the secret )ey is encrypted)ey, and the secret )ey is encrypted

with the recipient4s public )ey.with the recipient4s public )ey.

"his %ethod is so%eti%es re!erred"his %ethod is so%eti%es re!erred

to asto as 'ouble-ke encrtion'ouble-ke encrtion..


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'ou&le-%ey Encryption'ou&le-%ey Encryption

%essa&e%essa&e +ri#ate0key+ri#ate0keyencryptionencryption

CiphertextCiphertext

$andom$andommessa&e keymessa&e key

$ecipient"s$ecipient"spublic keypublic key

EncryptedEncryptedmessa&e keymessa&e key

+ublic0key+ublic0keyencryptionencryption


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'ou&le-%ey Encryption'ou&le-%ey Encryption

$ecipient"s$ecipient"spri#ate keypri#ate key

+ublic0key+ublic0keydecryptiondecryption

EncryptedEncryptedmessa&e keymessa&e key

%essa&e key%essa&e key

CiphertextCiphertext +ri#ate0key+ri#ate0keydecryptiondecryption

%essa&e%essa&e


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'igital Signatures'igital Signatures

'iital sinature'iital sinature occurs when so%eone encryptsoccurs when so%eone encrypts

a %essage with his or her own pri$ate )ey.a %essage with his or her own pri$ate )ey.

hat is ahat is a *as*in $unction*as*in $unctionAA

hashing !unction ta)es a long $ariable?length hashing !unction ta)es a long $ariable?length

string o! characters and con$erts it intostring o! characters and con$erts it into

a short !i#ed?length string.a short !i#ed?length string.


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'igital Signature Creation'igital Signature Creation

!ender"s!ender"spri#ate keypri#ate key

1ashin&1ashin&al&orithmal&orithm

i&itali&ital

si&naturesi&nature

+ublic0key+ublic0key

decryptiondecryption

1ash of 1ash of

messa&emessa&e

%essa&e%essa&e


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(eri)cation of 'igital Signature(eri)cation of 'igital Signature

%essa&e%essa&e 1ashin&1ashin&al&orithmal&orithm

1ash of 1ash of messa&emessa&e

(erify(erifysi&naturesi&nature

i&itali&italsi&naturesi&nature

+ublic0key+ublic0keydecryptiondecryption

!ender"s!ender"spublic keypublic key


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'igital Time-Stamping'igital Time-Stamping

hat is ahat is a 'iital time-stamin ser%ice'iital time-stamin ser%ice *>"8A*>"8A

It is an organi&ation that addsIt is an organi&ation that addsdigital ti%e?sta%ps to docu%ents.digital ti%e?sta%ps to docu%ents.


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'igital Time-Stamp "rocedure'igital Time-Stamp "rocedure

i&ital timei&ital timestamp ser#icestamp ser#ice

i&ital timei&ital timestamp ser#icestamp ser#ice

-ttach date and time,-ttach date and time,then di&ital si&naturethen di&ital si&nature

%essa&e%essa&e

ate andate andtimetime

i&itali&italsi&naturesi&nature

%essa&e%essa&e

(eri)cation of 'igital Time-(eri)cation of 'igital Time-


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(eri)cation of 'igital Time-(eri)cation of 'igital Time-

StampStamp

ate andate andtimetime

i&itali&ital

si&naturesi&nature

%essa&e%essa&e 1ash messa&e1ash messa&eand dateand dateand timeand time

ecrypt '!"secrypt '!"ssi&nature withsi&nature with

'!"s public key'!"s public key

1ashed messa&e1ashed messa&eand dateand dateand timeand time

ecryptedecrypteddi&italdi&ital

si&naturesi&nature

(erify(erifymatchmatch(erify(erifymatchmatch

Security Issues for "u&lic-%eySecurity Issues for "u&lic-%ey


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Security Issues for "u&lic-%eySecurity Issues for "u&lic %ey

Encryption SystemsEncryption Systems

hat ishat is crtanalsis attack crtanalsis attack AA

It in$ol$es $arious techni=ues !or It in$ol$es $arious techni=ues !or

analy&ing encrypted %essages !or analy&ing encrypted %essages !or

purposes o! decoding the% without purposes o! decoding the% without

legiti%ate access to the )eys.legiti%ate access to the )eys.

"he si%plest possible attac) on a %essage"he si%plest possible attac) on a %essage

is theis the uesse' lainte#t attack uesse' lainte#t attack ..



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Security Issues for "u&lic-%eySecurity Issues for "u&lic %ey


"he whole security o! public?)ey encryption"he whole security o! public?)ey encryption

depends on the assu%ption that an attac)er depends on the assu%ption that an attac)er

cannot !actor the product o! two largecannot !actor the product o! two large pri%e nu%bers * pri%e nu%bers * $actorin attack $actorin attack ..

"he best way to pre$ent"he best way to pre$ent crtanalsis an' crtanalsis an'

$actorin attacks $actorin attacks is to use $ery long )eys.is to use $ery long )eys.



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Security Issues for "u&lic %eySecurity Issues for "u&lic %ey


hat are so%e ways o! protecting pri$ate )eysAhat are so%e ways o! protecting pri$ate )eysA

:reating and distributing )eys:reating and distributing )eys

>igital certi!icates>igital certi!icates

:erti!icate re$ocation list *:5+8:erti!icate re$ocation list *:5+8

:erti!icate chains:erti!icate chains

:erti!icate?signing units:erti!icate?signing unitsey e#pirationsey e#pirations


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escribe #arious ecommerceescribe #arious ecommerce

applications, includin&applications, includin&payment systems,payment systems,

Web stores, and Web 2..Web stores, and Web 2..

h l i d


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Technologies Issues and Technologies Issues and


Electronic Bill Pay%ent 8yste%sElectronic Bill Pay%ent 8yste%s

:redit and >ebit :ard 8yste%s:redit and >ebit :ard 8yste%s

*Pay%ent :ard Industry >ata 8ecurity 8tandard*Pay%ent :ard Industry >ata 8ecurity 8tandard

Pay%ent Inter%ediaries *PIsPay%ent Inter%ediaries *PIs

h l i d


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hat ishat is 'iital cas*'iital cas*AA

It is %oney created when a ban) attachesIt is %oney created when a ban) attaches

its digital signature to a note pro%isingits digital signature to a note pro%ising

to pay the bearer so%e a%ount o! %oney.to pay the bearer so%e a%ount o! %oney.

T h l i I d


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hat ishat is blin'in blin'in AA

It is a techni=ue in which a ban) issuesIt is a techni=ue in which a ban) issues

digital cash in such a way the it isdigital cash in such a way the it isunable to lin) the payer to the payee.unable to lin) the payer to the payee.

hat is ahat is a blin'e' 'iital sinatureblin'e' 'iital sinatureAA

It is a digital signature and related digitalIt is a digital signature and related digital

cash that ha$e been issued with blinding.cash that ha$e been issued with blinding.

h l i dT h l i I d


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hat is anhat is an electronic wallet electronic wallet AA

It is a co%puter progra% that )eeps trac) o! It is a co%puter progra% that )eeps trac) o!

the $arious )eys and ite%s o! in!or%ationthe $arious )eys and ite%s o! in!or%ationassociated with digital %oney.associated with digital %oney.

hat arehat are smart car's smart car'sAA

"hey are hand?held electronic"hey are hand?held electronic

cards that are used !or pay%ents.cards that are used !or pay%ents.

T h l i I dT h l i I d


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e%ory cardse%ory cards

8hared?)ey cards8hared?)ey cards

8ignature?transporting cards8ignature?transporting cards

8ignature?creating cards8ignature?creating cards

The InternetThe Internet


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StoreStore

3 1

:usto%ers:usto%ers eb Hosteb Host

eb Browser eb Browser erchant4serchant4seb 8iteeb 8ite

"he Internet"he Internet

nline "ransactionnline "ransaction

8er$er 8er$er 8hopping8hopping:art 8o!tware:art 8o!tware

erchant4serchant4s

>atabase>atabase8er$er 8er$er

9inancial Institution9inancial Institution

!or :learing!or :learing

erchant4s ccountingerchant4s ccounting

In!or%ation 8yste%In!or%ation 8yste%

erchant4serchant4s

Ban) Ban)

>igital>igital:erti!icate:erti!icate

uthorityuthority

44

44

44

2222

22

22

22

33

33

Pri$ate atewayPri$ate ateway

Integrating The *e& Store withIntegrating The *e& Store with


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Integrating The *e& Store withIntegrating The *e& Store with

The ccounting System The ccounting System

3 2

8%all co%panies4 web stores are hosted by8%all co%panies4 web stores are hosted by s*oin cart so$tware s*oin cart so$tware that %anages catalog,that %anages catalog,

user registration, orders, e%ail con!ir%ation,user registration, orders, e%ail con!ir%ation,

e$en !inancial reports that are then i%portede$en !inancial reports that are then i%portedinto general accounting so!tware.into general accounting so!tware.

+arger co%panies use+arger co%panies use E" sstems E" sstems thatthat

integrate all the %a6or accounting !unctions,integrate all the %a6or accounting !unctions,

as well as the web store, into a single so!tware.as well as the web store, into a single so!tware.

* & + * & +


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*e& +,*e& +,

3 3

i)ii)i

BlogsBlogs

588 news !eeds588 news !eeds

ashupsashups


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T t i CT t i C


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Trust in e-Commerce Trust in e-Commerce

3 (

:oo)ies:oo)ies

eb "rusteb "rust


66/66

End of ChapterEnd of Chapter

33

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