1 / 32

Summer Training Project: AALEEF - File Compression, Encryption, and Decryption Solutions

The AALEEF project, undertaken during my summer training at Software Technology Group (STG) in Jodhpur, focuses on file compression and encryption/decryption techniques. Guided by industry experts, the project implements object-oriented principles to create a user-friendly interface for all file types. Key tasks include developing the Codec and Endec modules, enhancing reusability, and ensuring extensibility for future improvements. Through this project, I've gained valuable insights into real-world applications of these technologies, while also learning concurrent programming in Java.

kim-spears
Download Presentation

Summer Training Project: AALEEF - File Compression, Encryption, and Decryption Solutions

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. THE SUMMER TRAINING PROJECT By : Abdul Wahid

  2. TRAINING ORGANIZATION Software Technology Group (Int.) Ltd. Jodhpur centre • Well known as STG • DIRECTOR : • Mr.P.S.Bhadu • GUIDED BY: • 1.Mr.Amit Rathore • 2.Mrs.Sandya Harsh

  3. THE PROJECT NAME : AALEEF TASKS : 1.File compression/decompression 2.File encryption/decryption SCOPE : All types of files

  4. WHY CODEC AND ENDEC Previous interests 2.Real world importance 3.Uncertainty about completion 4.Concurrent learning of java

  5. TEAM ORGANIZATION • Single person project • Project manager to Tester – Abdul Wahid

  6. GOALS TO BE ACHIEVED • Implementation of object oriented concept • Easiest help & user interface • Reusability & future extensibility • Other general facilities to user

  7. PROJECT PLAN • TITLE- AALEEF • SCOPE-All types of files • SWDLC : Component based model • MODULES : 1.Endec 2.Codec 3.Help

  8. SHEDULING

  9. REQUIREMENT ANALYSIS A. Functional Requirements 1.Overall Requirements(Services) 2.Functional Requirement of GUI B. Non functional Requirements

  10. SYSTEM ANALYSIS ALGORITHM DESIGNING : CODEC: STANDARD CANONICAL HUFFMAN ENDEC: SELF DEVELOPED

  11. : SYMBOL PROB a 0.4 b 0.3 f2 0.3 SYMBOL PROB a 0.4 SYMBOL PROB b 0.3 a 0.4 f1 0.2 c 0.1 b 0.3 c 0.1 d 0.1 e 0.1 ALGORITHM DESIGNING HUFFMAN COMPRESSION : 1 2

  12. : SYMBOL PROB f3 0.6 a 0.4 SYMBOL PROB f4 1.0 ALGORITHM DESIGNING THE HUFFMAN TREE : 0 1 0 1 0 1 0 1 3 4

  13. ALGORITHM DESIGNING THE CODES : Codes Length a=0 1 b=11 2 c=100 3 d=1010 4 e=1011 4 Bits required in huffman coding=14 Bits required in fixed length coding=15

  14. ALGORITHM DESIGNING MESSAGE ENCODING & DECODING : Original message b e a b d a c Fixed length encoding 001 100 000 001 011 000 010 Huffman encoding 11 1011 0 11 1010 0 100 0 1 0 1 0 1 0 1

  15. THE CANONICAL HUFFMAN STEPS FOR BASE CODES : Symbol Length a 1 b 2 c 3 d 4 e 4 Repet from i=max code length to 1 Code=Code+Number of last codes Code>>1; Start_code[i]=Code Number of= no.of codes in last codes current length Symbol BaseCode d 0000 c 001 b 01 a 1

  16. THE CANONICAL HUFFMAN STEPS FOR ACTUAL CODES : Symbol BaseCode d 0000 c 001 b 01 a 1 Symbol Code a 1 b 01 c 001 d 0000 e 0001 1.Sort list in symbolic order 2.Increment last code and assign codes

  17. ALGORITHM DESIGNING THE ENCRYPTION ALGORITHM : 1.Read password and calculate len= password length. 2.Write len and password to destination file. 3.Read bytes from source file and to destination file write : byte=byte value-(password length+2)

  18. ALGORITHM DESIGNING THE DECRYPTION ALGORITHM : After matching the entered password with the password in file 1.Read bytes from source file and to destination file write : byte=byte value+(password length+2)

  19. THE DFD’s Level zero(0) DFD :

  20. THE DFD’s LEVEL ONE(1) DFD FOR Codec :

  21. THE DFD’s LEVEL TWO(2) DFD FOR Codec : Compress

  22. THE DFD’s LEVEL TWO(2) DFD FOR CODEC :Decompress

  23. THE DFD’s LEVEL ONE(1) DFD FOR Endec

  24. THE DFD’s LEVEL TWO(2) DFD FOR ENDEC : Encrypt

  25. THE DFD’s LEVEL TWO(2) DFD FOR ENDEC : Decrypt

  26. SYSTEM DESIGN User’s responsibility: Familiarity with working with files. Validations: 1.Software must dynamically interact with user. 2.User friendly message should be shown if required. 3.Level of compression/encryption should be shown by extensions. 4.Facility for showing password should be given. Interface design: Background colour:gray Window’s W/H ratio:3:2 Window’s size:600:400 pixels

  27. SYSTEM DESIGN INTERFACE DESIGN : Main screen:

  28. SYSTEM DESIGN INTERFACE DESIGN : When “Codec” pressed:

  29. SYSTEM DESIGN INTERFACE DESIGN : When “Endec” pressed:

  30. SYSTEM IMPLEMENTATION

  31. CONCLUSION • PRESENT VERSION OF AALEEF • FUTURE PLANS • TRAINING EXPERIENCE

  32. ? QUERIES

More Related