first follow up.pptx

8/17/2019 First Follow up.pptx

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Analysis of the tradeo betweecompression ratio and security lein real-time video communicatio

Supervisor:DR. Ahmad FADLALLADR !ohamad RAAD


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"lan

"ro#ect outline

$ideo compression%ncryption scheme

Review of related wor&

Future wor&

'(A


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"ro#ect outline

).* %+ permonth ,/01 ).2 %+ permonth ,1

u3e data consumption

*4 of tra5c is video

"ossible solution:6se video compression techni7ue to minimi8e the load

+69 9his is not the only concernS%6R;9


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"ro#ect outline

• $ideo compression

• Security scheme

• 9radeo between video compression and security level


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$ideo compression

• Reduce data si8e by eliminatin3 redundancy• ombinin3 ima3e compression and motion

vector compression• lossy or lossless• an be seen as possibility to send better

7uality while concervin3 the same networ&

capacity


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ideo compression


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%ncryption

%ncryption is the process of encodin3 messa3es or informatsuch a way that only authori8ed parties can read it.

Several encryption schemes e=ist:• Full encryption where the whole data is encrypted it is secomple=> re7uire hu3e memory and slow

• "ermutation is the fact of interchan3in3 byte location> it?ssimple and fast scheme but 3enerally with low security

• Selective encryption it is considered as li3ht wei3ht encry

that encrypt data and ma&e it secure with a reasonablecomple=ity and time consumption• "erceptual encryption a low 7uality of data used in specia

li&e $oD and "ay per $ideo


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eview of related wor&

Meyer and Gadegast

%ncryptin3 !"%@ video stream usin3 RSA and D%S in + mode

Dierent level of security ,eader> eader and D and A component> ; frame> FullSpecial encoder and decoder must be implemented leadin3 to non format complianDemonstrated reduced e5cient demonstrated by Qiao and Naharestedt

Aegis mechanism

• %ncrypt ; frame and eader of !"%@ stream usin3 D%S in + mode• Show the importance of selective encryption• Agi and Gong demonstrated that this mechanism has a low security due

inter correlation between + and " frame and ; Frame• eader encryption un-useful as they are predictable


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Changgui Shi and Bharat Bhargava

• $ideo %ncryption Al3orithm ,$%A1 for !"%@ stream• %ncryption of D9 coe5cient by BRin3 with secret &ey• %nhanced $%A by encryptin3 D coe5cient and si3n of motion vector• $ulnerable to chosen plain-te=t attac&

iguo Lian, Zhongxuan Liu, Zhen Ren, and Haia !ang

"roposed for .2CA$ video streamSensitive data as intra prediction mode> residue data and motion vector are encryp


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Bergeron and Lamy Bergot

• %ncrypt .2C $ideo stream usin3 A%S•

Format compliant scheme with possibility of insertin3 encryption in encode• %ncryption bit that have no or ne3li3ible eect on compression ration• Lac& of crypto3raphic security

A"omhara and a

• %ncryptin3 .2CA$ ; frame usin3 /E-bit A%S•

Reduced computational comple=ity and simple to implement• !ust ta&e in consideration + and " frame


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Future wor&

+riey tal&in3 we can resume previous wor& as:

/. ; frame encryption. D9 coe5cient encryption

).!$ encryption

C.Ghole encryption


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Future wor&

;n our pro#ect $"E is used as video compressiontechni7ue:• Bpen source techni7ue• Gidely implemented and supported ,

hrome> !o8illa> Bpera H1• !ature techni7ue and recently a mandatory encoder

to implement in G%+R9• 9he frame by frame processin3

Simulation will ta&e in consideration one> more or acombination of selective encryption scheme.;n order to analy8e the tradeo between compressionratio an security level in a real time videocommunication.


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Discussion


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References

• isco $isual Ietwor&in3 inde=: @lobal !obile Data 9ra5c Forecast 6p/0-

• L.'iao and J. Iahrstedt >KAnew Al3orithm for !"%@ $ideo %ncryption•

M.!eyer and F.@ade3ast >KSecurity mechanism for multimedia-data we=ample !"%@-;-$ideo• ;.A3i and L.@on3> An %mpirical study of secure !"%@ $ideo 9ransmis• @.Spanos and 9.!aples K"erformance of a selective encryption schem

security of networ&ed> Real-9ime $ideo• .Shi and +.+har3ava> KAn e5cient !"%@ $ideo %ncryption Al3orithm• M.Gen and al.> K A format-compliant conN3urable encryption framewo

access control of multimedia• G.Oen3 and S. Lei> K%5cirnt Fre7uency domain selective scramblin3

video• .+er3eron and . +er3ot> Kompliant Selective encryption for .2C

$ideo Streams• S.Lian and al.>Secure Advanced $ideo codin3 +ased on selective enc

al3orithms•

!.Abomhara and al> K%nhancin3 selective encryption for .2CA$ 6advanced %ncryption Standard

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