Professional Encryption Software

1
Professional Encryption Software

• FINECRYPT 8.1

2
Contents

• Introduction
• Features
• Installation
• Tests
• Results
• Conclusion

3
Cryptography Introduction

• Study of secret writing
• Storing information in a form which allows it to
  be revealed to those you wish to see it yet hides
  it from all others
• Effective way to reliably protect confidential
  data

4
Benefits of Cryptographic Technologies?

• Data secrecy
• Data integrity
• Authentication of message originator
• Non-repudiation

5
Why FineCrypt?

• Security software application
• Enables to securely store the data using strong
  encryption
• Written in Assembly Language
• 1.5 Times faster the other encryption tools
• Uses Symmetric Key Encryption i.e the sender and
  receiver of a message know and use the same
  secret key

6
Awards of FineCrypt

7
Features?

• Supports 10 Encryption Algorithms i.e. AES,
  Blowfish, 3DES etc
• Uses 4 Encryption Modes i.e. ECB, CBC, CFB and
  OFB
• Only program which checks the correctness of
  encryption
• FineCrypt Communicator - Exchanging encrypted
  files and encryption keys with other users

8
Features (cont)

• Key Management using key manager
• Encrypt several files either into single
  encrypted archive or into different encrypted
  files
• Encrypt files both with the password and with the
  key
• Permanent File Deletion using Wipe utility

9
10 Encryption Algorithms
10
Encryption Modes

• Used with block cipher to encrypt a message of
  arbitrary length
• Electronic Cookbook Mode (ECM)
• Cipher Block Chaining mode (CBC)
• Cipher Feedback mode (CFB)
• Output Feedback mode (OFB)

11
Reference System Support

• Download Sources
• www.finecrypt.net
• www.download.com

• System Support
• Windows 9x
• Windows 2000
• Windows XP
• Windows 2003

12

• Once fcinst.exe downloaded on the machine, click
  the package to start installation
• You will come up with the following screen. Click
  continue to proceed

13

• Click Next

14

• Read the license Agreement and if you agree the
  terms and condition then proceed

15

• Choose the destination location where you want to
  install FineCrypt

16

• After giving the destination location, click next
  to proceed

17

• Click Finish to restart the computer

18

• ArcViewer Window

19
Encryption using Password

• Click with the right mouse button on selected
  files from the FineCrypt submenu choose "Encrypt
  with password" menu item

20

• Enter the passphrase you want to encrypt a file

21

• Choose Encryption Algorithm Encryption Mode. In
  this example, we selected the algorithm 3DES with
  CFB mode

22

• Then click on Encrypt button and save the file
  with .fca format. You will get the encrypted
  file, as shown highlighted

23
Decryption using Password

• In order to decrypt a file or folder, click the
  desired source

24

• Click the file you want to decrypt. FineCrypt
  will ask you for Password. Enter the Password

25

• By pressing the Ok button you will get the
  decrypted file

26
Encryption using Key

• Right Click the file or folder you want to
  Encrypt. Encrypt the file using Encrypt with
  Key option

27

• Click on Settings and then select the algorithm
  and mode to encrypt the file

28

• Click on Password Button and generate the key.
  Then Save the key, specify name and location for
  encrypted file and then press Encrypt button

29

• You will get the encrypted file along with the key

30
Decryption using Key

• In order to decrypt a file or folder, open the
  encrypted file and you will get screen above

31

• Click the Read button and select the saved key
  which was used to encrypt the file and then press
  ok

32

• You can see the decrypted file above

33
Key Manager Interface
34
Checking reliability of FineCrypt's Encryption

• Comparing the original text and resulting
  ciphertext, known as "test vectors"
• Test vectors - widely published and can find them
  in the Internet
• Hexadecimal file editor required for testing
• Download a simple hexadecimal editor
  "HighLight" _at_ www.finecrypt.net/mylight22.exe

35

• Testing AES Algorithm with Electronic Codebook
  Mode
• Download the test vectors for AES algorithm from
  National Institute of Standards and Technology
  (NIST)
• http//csrc.nist.gov/encryption/aes/rijndael/rijnd
  ael-vals.zip
• Unzip and open the file "ecb_tbl.txt"

36

• Create new file in hexadecimal editor
• Enter the plaintext exactly as shown in the test
  vector

37

• Save the file as aesp at desired location. Our
  plaintext is created
• Encrypt aesp file using key
• Enter the encryption key exactly as shown in the
  test vector

38

• Select AES with ECB mode
• Set Dont compress option on General page
• Do not change anything in the "initial vector"
  editor window
• Press the "Encrypt" button and encrypt the file
• The process is finished

39

• Now check the ciphertext in the file aesp
  corresponds with NISTs ciphertext or not
• Open the encrypted file in Hex Editor
• Compare that green text with test vector and make
  sure they are identical

40
Cracking Encryption
41
Conclusion

• Information Security is becoming more important
  after Sept 11, 2001
• Encryption products - locks and keys of the
  Information Age
• FineCrypt - Best freeware Cryptographic tool
  available on Internet