MARC details
| 000 -LEADER |
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| fixed length control field |
03223nam a2200277 a 4500 |
| 001 - CONTROL NUMBER |
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| control field |
vtls000063637 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
KUKTEM |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20251114204520.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
|---|
| fixed length control field |
120911t2012 my a f 000 0 eng d |
| 020 ## - INTERNATIONAL STANDARD BOOK NUMBER |
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| International Standard Book Number |
THE0003666(Local) |
| 039 #9 - LEVEL OF BIBLIOGRAPHIC CONTROL AND CODING DETAIL [OBSOLETE] |
|---|
| Level of rules in bibliographic description |
201905161351 |
| Level of effort used to assign nonsubject heading access points |
zulaiha |
| Level of effort used to assign subject headings |
201710061634 |
| Level of effort used to assign classification |
aishah |
| Level of effort used to assign subject headings |
201209111528 |
| Level of effort used to assign classification |
ida |
| -- |
201209111527 |
| -- |
ida |
| 040 ## - CATALOGING SOURCE |
|---|
| Original cataloging agency |
UMP |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) |
|---|
| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) |
TK5105.59 .K43 2012 rs Thesis |
| 100 1# - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Khalaf, Emad T. |
| 245 10 - TITLE STATEMENT |
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| Title |
Enhancement of cryptography and transform domain in steganography for higher embedding capacity / |
| Statement of responsibility, etc. |
Emad T. Khalaf |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. |
|---|
| Place of publication, distribution, etc. |
Kuantan, Pahang : |
| Name of publisher, distributor, etc. |
UMP, |
| Date of publication, distribution, etc. |
2012 |
| 300 ## - PHYSICAL DESCRIPTION |
|---|
| Extent |
xvi, 96 p. : |
| Other physical details |
ill. (some col.) ; |
| Dimensions |
30 cm. + |
| Accompanying material |
1 CD-ROM |
| 502 ## - DISSERTATION NOTE |
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| Dissertation note |
Thesis (Master of Computer Science) -- Universiti Malaysia Pahang - 2012 |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE |
|---|
| Bibliography, etc. note |
Bibliography : p. 88-96 |
| 520 3# - SUMMARY, ETC. |
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| Summary, etc. |
In the field of Data Communication, security issues are the top priority. Cryptography and steganography address the necessary elements for secure communication namely privacy, confidentiality, key exchange, authentication, and non-repudiation but reveals the fact that communication is happening. This study proposes a combination of Steganography and Cryptography to enhance security of the transmitted information. Hence this work is composed of two parts: cryptographic and steganographic. In the cryptographic part, an improvement has been proposed to the Hill cipher algorithm to be more secured by using a large and random key with large data block, and also extending it by including the special characters and digits. For the steganographic part, a new method has been proposed by combining Discrete Cosine Transform (DCT) and Discrete Wavelet Transform (DWT), to take the advantageous of both algorithms. The original image is decomposed into four bands using the Haar wavelet LL, HL, LH and HH. Three of these sub-bands have been selected to hiding data (LH, HL and HH) which are less effect to the image than LL sub-band. Then, DCT transform is applied to the selected DWT sub-band, the process of hiding will be in the least significant bit of the DCT coefficients to each sub-band. The distribution of data will be based on the chosen percentages, which is entered by a sender. These percentages will be agreed between both the sender and the receiver as a key of hiding. The proposed system goal is to provide more complexity in encryption and make the embedding capacity as high as possible with high visible quality in a way that it does not allow any attacker to even detect that there are secret messages. The complexity of encryption and concealment was checked out with a number of widely used metrics such as Peak Signal to Noise Ratio (PSNR), Mean Squared Error (MSE), Normalized Absolute Error (NAE) and Normalized Correlation Coefficient (NCC). The experimental results demonstrate the complexity of the proposed method compared with the standard and existing methods. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Computer networks |
| General subdivision |
Security measures |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Cryptography |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Data encryption (Computer science) |
| 856 40 - ELECTRONIC LOCATION AND ACCESS |
|---|
| Uniform Resource Identifier |
<a href="http://ecollib.ump.edu.my/19957/">http://ecollib.ump.edu.my/19957/</a> |
| Public note |
Library access only |