privacy preserving on mobile health data in cloud

8/19/2019 Privacy preserving on mobile health data in cloud

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Privacy preserving on mobile health data in cloud

ABSTRACT:

In the concept of MPI chatting and file transmission the decryption part will bedone automatically. Here we use three types of keys; they are pubic, private and secret key. Keys

are displayed to the destination only if they accept the reuest or else displaying of key is not

possible in the destination side and also it won!t give or establish the "onnection. In largelyspread clusters, computing nodes are naturally deployed in a variety of computing sites. #he

Information processed in a spread cluster is communal among a group of distributed processes or

client by high$uality of messages passing protocols %e.g. message passing interface $ MPI&running on the Internet. 'ecause of the open available nature of the Internet, data encryption for

these large$scale distributed clusters becomes a non$trivial and challenging problem. (e

improved the security of the MPI (Message Passing Interace! protocol by encrypting anddecrypting messages sent and received among computing nodes. (e are listening carefully onMPI rather than more protocols because MPI is one of the most accepted communication

protocols for cluster computing environments. )rom among a multiple of MPI implementations,

we selected MPI"H* developed by the +rgonne ational -aboratory. esign goal of MPI"H* $a commonly use MPI implementation $ is to /oin portability with high presentation. we gives a

security enhanced MPI$library with the standard MPI interface, data communications of a

conservative MPI program can be secured without converting the program into thecorresponding secure report. (e included encryption algorithms into the MPI"H* library so that

data in secret of MPI applications could be readily preserved without reuire modifying the

source codes of the MPI applications. "e used Sandia Micro Benchmar# and Intel MPI

Benchmar#s to evaluate and compared the perormance o original MPIC$% and&nhanced Security MPIC$%' +ccording to the performance estimation, 01$MPI"H* provides

protected Message Passing Interface by give up sensible system performance.

&ISTI)* S+ST&M:

The nontrivial and difcult complexity to oer secrecy service or large-

scale spread clusters, because there is an open easy to get to nature o

the open networks. To identiy this question, we improved the security

o the !" protocol by encrypting and decrypting messages sent and

expected among compute nodes. 2ising number of product clusters are

connected to other by public networks, it!s become a possible threat to safety sensitive

similar application running on the cluster. #o address this safety problems we residential


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a Message Passing Interface %MPI& implement!s to protect privacy of messages

communicate amongst nodes of clusters in an unprotect network.

,ISA,-A)TA*&S:

1. The programmers may rely on external libraries to implement secure

applications2. !"-interace-level solution enables programmers to write secure !"

applications with minimum changes to the interace

PR.P.S&, S+ST&M:

#he 01$MPI"H* methods allow application programmers to simply write safe

MPI applications without e3tra code for data$secrecy security. (e apply a standard MPI

method called 01$MPI"H* to present data confidentiality for safe network

communications in message passing environment. 4ur planned security method

incorporated in the MPI"H* library!s can be very helpful for pro/ect!s data transmitted in

open network like Internet. "hannel$level e3planation in which encryption and

decryption functions are built$in into the MPI"H* library.01$MPI"H* maintain a

standard MPI interface to replace messages while preserve data!s confidentiality.

A,-A)TA*&S5

#he implemented 01$MPI"H* framework provides a secured design file that

enables application programmers to selectively choose any cryptographic

algorithm and symmetric$key in 01$MPI"H*. #his feature makes it possible for programmers to easily and fully control the

security services incorporated in the MPI"HI* library. #o demonstrate this

feature, we implemented the +01 and 601 algorithms in 01MPI"H*.


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S+ST&M R&/0IR&M&)T SP&CI1ICATI.)

$AR,"AR& R&/0IR&M&)TS

Processor 5 Pentium I7

2+M 5 89* M'

Hard isk 5 :


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"$AT IS 5A-A6

=ava ha two things5 a programming language and a platform. =ava is a high$

level programming language that is all of the following

1imple +rchitecture$neutral4b/ect$oriented Portable

istributed High$performanceInterpreted multithreaded

2obust ynamic

1ecure

=ava is also unusual in that each =ava program is both compiled and

interpreted. (ith a compile you translate a =ava program into an intermediate

language called =ava bytecodes the platform$independent code instruction is

passed and run on the computer.

"ompilation happens /ust once; interpretation occurs each time the program is

e3ecuted. #he figure illustrates how this works.

Cou can think of =ava byte codes as the machine code instructions for the =ava

7irtual Machine %=ava 7M&. 0very =ava interpreter, whether it!s a =ava

development tool or a (eb browser that can run =ava applets, is an

implementation of the =ava 7M. #he =ava 7M can also be implemented in

hardware.

=ava byte codes help make Dwrite once, run anywhereE possible. Cou can

compile your =ava program into byte codes on my platform that has a =ava

Java

Program

Compilers

Interpreter

My Program


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compiler. #he byte codes can then be run any implementation of the =ava 7M. )or

e3ample, the same =ava program can run (indows #, 1olaris, and Macintosh.

5A-A P7AT1.RM

+ platform is the hardware of software environment inwhich a program runs. #he =ava platform differs from most other

platforms in that it!s a software only platform that runs on the top of

other, hardware$based platform. Most other platforms are described as

a combination of hardware and operating system.

#he =ava platform has two components5

#he =ava 7irtual Machine %=ava 7M&

#he =ava +pplication Programming Interface %=ava +PI&

Cou!ve already been introduced to the =ava 7M. It!s the base for the

=ava platform and is ported onto various hardware$based platforms.

#he =ava +PI is a large collection of ready$made software

components that provide many useful capabilities, such as graphical user interface

%


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they are runtime e3tensions of the application. Instead of working in browsers,

though, servlets run with in =ava (eb 1ervers, configuring of tailoring the server.How does the =ava +PI support all of these kinds of programsG (ith

packages of software components that provide a wide range of functionality. #he

+PI is the +PI included in every full implementation of the platform.

#he core +PI gives you the following features5

#he 0ssentials5 4b/ects, 1trings, threads, numbers, input and output, datastructures,

system properties, date and time, and so on.

)&T".R4I)*5 F2-!s #"P and FP sockets and IP addresses.

I)T&R)ATI.)A7I8ATI.): Help for writing programs that can be localied for

users.

(orldwide programs can automatically adapt to specific locates and

be displayed in the appropriate language.

=+7+ P24


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=ust$in$time$byte$code compilers can bring =ava!s performance close to the native

code without threatening portability.

"$AT CA) 5A-A ,.6

However, =ava is not /ust for writing cut, entertaining

applets for the (orld (ide (eb %(((&. =ava is a general purpose, high$level

programming language and a powerful software platform. Fsing the fineries

=ava +PI,you can write many types of programs.

#he most common types of program are probably applets and

application, where a =ava application is a standalone program that runs directly on

the =ava platform.

S&C0RIT+:'oth low$level and high$level, including electronic signatures,

publicBprivate key management, accesses control, and certificate.

M.,07&S:

• Key +greement

• +01

• 6 01

• 0""

• "hatting

• )ile 1haring

M.,07&S ,&SCRIPTI.):


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4ey Agreement:

In this Pro/ect for Key +greement we are using iffieHellman key e3change

algorithm that establishes a shared secret that can be used for secret communications bye3changing data over a public network. #he following diagram illustrates the general idea of the

key e3change by using colors instead of a very large number. #he key part of the process is that+lice and 'ob e3change their secret colors in a mi3 only. )inally this generates an identical keythat is mathematically difficult %impossible for modern supercomputers to do in a reasonable

amount of time& to reverse for another party that might have been listening in on them. +lice and

'ob now use this common secret to encrypt and decrypt their sent and received data. ote thatthe yellow paint is already agreed by +lice and 'ob5

A&S:

+01 is based on a design principle known as a substitution$permutation network, andis fast in both software and hardware. Fnlike its predecessor 01, +01 does not use a )eistelnetwork. +01 is a variant of 2i/ndael which has a fi3ed block sie of 9*: bits, and a key sie of

9*:, 9J*, or *8 bits. 'y contrast, the 2i/ndael specification per se is specified with block and

key sies that may be any multiple of 6* bits, both with a minimum of 9*: and a ma3imum of*8 bits.

+01 operates on a LL column$ma/or order matri3 of bytes, termed the state, although some

versions of 2i/ndael have a larger block sie and have additional columns in the state. Most +01

calculations are done in a special finite field.

#he key sie used for an +01 cipher specifies the number of repetitions of transformation roundsthat convert the input, called the plainte3t, into the final output, called the cipher te3t. #he

numbers of cycles of repetition are as follows5

• 9 cycles of repetition for 9*: bit keys.

• 9* cycles of repetition for 9J* bit keys.

• 9L cycles of repetition for *8 bit keys.

0ach round consists of several processing steps, including one that depends on the encryption

key itself. + set of reverse rounds are applied to transform cipher te3t back into the original

plainte3t using the same encryption key.

3 ,&S:

#he original 01 cipherAs key sie of 8 bits was generally sufficient when that

algorithm was designed, but the availability of increasing computational power made brute$force

http://en.wikipedia.org/wiki/Key_sizehttp://en.wikipedia.org/wiki/Column-major_orderhttp://en.wikipedia.org/wiki/Finite_field_arithmetichttp://en.wikipedia.org/wiki/Column-major_orderhttp://en.wikipedia.org/wiki/Finite_field_arithmetichttp://en.wikipedia.org/wiki/Key_size


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attacks feasible. #riple 01 provides a relatively simple method of increasing the key sie of

01 to protect against such attacks, without the need to design a completely new block cipher

algorithm.

#riple 01 uses a Nkey bundleN which comprises three 01 keys, K 9, K * and K 6, each of

8 bits %e3cluding parity bits&. #he encryption algorithm is5

"ipher te3t O 0K6%K*%0K9%plainte3t&&&

I.e., 01 encrypts with K 9, 01 decrypt with K *, then 01 encrypt with K 6.

ecryption is the reverse5

Plainte3t O K9%0K*%K6%cipher te3t&&&

I.e., decrypt with K 6, encrypt with K *, and then decrypt with K 9.

&CC:

0lliptic curve cryptography %0""& is an approach to public$key cryptography based

on the algebraic structure of elliptic curves over finite fields. Popular asymmetric cryptosystemslike 21+ are known to be very costly concerning calculation time and memory needs for larger

key sies. #o solve this problem, elliptic curve cryptosystems based can be used. +n elliptic

curve cryptosystem is an asymmetric cryptosystem relying on the hardness of the discretelogarithm problem in elliptic curve groups. (ith 0"I01 encryption, it is possible to encrypt data

with a 9$bit key as secure as with 21+ using a 9*L$bit key. 1o 0"I01 encryption is the better

choice compared to 21+ when calculation time and available memory are restricted, e.g. whenusing cryptosystems on smartcards. #he 0lliptic "urve Integrated 0ncryption 1cheme %0"I01&,also known as 0lliptic "urve +ugmented 0ncryption 1cheme or simply the 0lliptic "urve

0ncryption 1cheme.

Chatting:

In "hatting, after )inished the key agreement the sender will send the message

and receiver will receive the msg using the socket connection. (hile sending 1ender must haveto choose +ny one of the three algorithm for encrypt the whole msg. #he sender can send

message using IP +ddress only.

1ile Sharing:

In )ile 1haring, +fter )inished the key agreement the sender will send the file and

receiver will receive the file without any loss of information using the socket connection. whilesending 1ender must have to choose +ny one of the three algorithm for encrypt the whole data.

#he sender can send file using IP +ddress only.


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M.,07&S "IS& ,IA*RAMS:

4ey Agreement


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http://en.wikipedia.org/wiki/File:Diffie-Hellman_Key_Exchange.svg


12/46

A&S


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14/46

3 ,&S


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C$ATTI)*:


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1I7& S$ARI)*

9' 0M7 ,IA*RAMS:

i. F10 "+10 I+


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$I&RARC$ICA7 ,IA*RAM:

#ey $greement%hoose&eceiver &eceiver &eceiver&eceiver &egistration

'ender

%hatting (ile 'haring'end


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S+ST&M ARC$IT&CT0R&:

Sender )etor# Receiver


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,ATA 17." ,IA*RAM:

1ender

&R ,IA*RAM:

. 'end to

destination

$lgorithm

%hosen

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%hoose )le ormessage

$uto

decrypt

#ey

assi

*riginal

message or )le

+e can save

&egistration %hatting

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'end

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%hoose


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23/46

TAB7& ,&SI*):

algorithm


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0serdetiles

4ey agreement


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Registration


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C.)C70SI.):

#o address the issue of providing confidentiality services for large$scale clusters

connected by an open unsecured network, we aim at improving the security of the message

passing interface protocol by encrypting and decrypting messages communicated among

computing nodes. In this study, we implemented the 01$MPI"H* framework, which is based onMPI"H*. 01$MPI"H* is a secure, compatible and portable implementation of the message

passing interface standard. "ompared with the original version of MPI"H*, 01$MPI"H*

preserves message confidentiality in MPI applications by integrating encryption techniues like+01 and 601 into the MPI"H* library. In light of 01$MPI"H*, programmers can easily write

secure MPI applications without an additional source code for data$confidentiality protection inopen public networks. #he security feature of 01$MPI"H* is entirely transparent to MPI programmers because encryption and decryption functions are implemented at the channel$level

in the MPI"H* library. MPI$application programmers can fully configure any confidentiality

services in MPI"HI*, because a secured configuration file in 01$MPI"H* offers the programmers fle3ibility in choosing any cryptographic schemes and keys seamlessly

incorporated in 01$MPI"H*. 'esides the implementation of +01 and 601 in 01MPI"H*,

other cryptographic algorithms can be readily integrated in the 01$MPI"H* framework. (e used


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the 1andia Micro 'enchmarks and the Intel MPI benchmarks to evaluate and analye the

performance of MPI"H*. "onfidentiality services in 01$MPI"H* do introduce additional

overhead because of security operations. In the case of small messages, the overhead incurred bythe security services is marginal. #he security overhead caused by +01 and 601 becomes more

pronounced in 01$MPI"H* with larger messages %e.g., the message sie is larger than *8 K'&.

4ur e3perimental results show that the security overhead in 01$MPI"H* can be significantlyreduced by high$performance clusters. )or e3ample, the overhead added by +01 in 01$MPI"H*

is reduced by more than half when the $node cluster of Intel "eleron is used instead of the 9$

node cluster of Intel Pentium II. In addition to high$end clusters, the following two solutions can be applied to further reduced overhead caused by confidentiality services in 01$MPI"H*. )irst,

+01B601 hardware implementations can lower security overhead in 01$MPI"H*. 1econd,

security coprocessors can hide the overhead by allowing the encryption and decryption processes

to be e3ecuted in parallel with the message passing processes. (e are currently investigatingvaries means of reducing security overhead in 01$MPI"H*. )or e3ample, we plan to study if

multicourse processors can substantially lower the overhead of confidentiality services in 01$

MPI"H*. +nother interesting direction for future work is to consider several strong and efficient

cryptographic algorithms like the 0lliptic "urve "ryptography in 01$MPI"H*. 1ince 0"" is anefficient and fast cryptographic solution, both the performance and the security of 01$MPI"H*

are likely to be improved by incorporating 0"". + third promising direction for further work isto integrate encryption and decryption algorithms in other communication channels like

1HM0M and Infini'and in MPI"H* because an increasing number of commodity clusters are

built using standalone and advanced networks such as Infiniband and Marine. #he currentversion of 01$MPI"H* is focused on securing the transmission control protocol %#"P&

connections on the internet, because we addressed the data confidentiality issues on

geographically distributed cluster computing systems. In addition to the MPI library, other

parallel programming libraries will be investigated. "andidate libraries include the sharedmemory access library and the remote direct memory access library. (e plan to provide

confidentiality services in the 1HM0M and 2M+ libraries. -ast but not least, we will

uantitatively evaluate the performance of integrity checking services that are incorporated intothe 01$MPI"H* framework. #he goal of developing the integrity checking services is to reduce

overhead of the services in 01$MPI"H*

.SAMP7& C.,I)*

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8

else

'ystem.out.println6?&equested remote obect is null?70

8

catch61xception ex:7

5

ex:.print'tackTrace670


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8

8

8

public class %ancel/istener implements $ction/istener

5


5

setBisible6alse70

%lientain(orm c > new %lientain(orm670

c.initcomponents670

8

8

8

SAMP7& SCR&&) S$.TS:


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