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File Encryption

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File Encryption

  1. 1. By: Brittany Gilstrap
  2. 2. File Encryption File encryption is a method of cryptography that can be used for individual files, or small groups of files. Pg 386
  3. 3. Common Tools for FileEncryption Pretty Good Privacy (PGP) is an encryption for files on a Windows system.  Advantages: Can use RSA or Diffie-Hellman for algorithms that are asymmetric, and use IDEA for algorithms that are symmetric.  Disadvantages: Any users sending encrypted messages or files to each other must both use PGP or it is unable to be read. http://www.ehow.com/list_5924278_disadvantages- pgp-encryption_.html
  4. 4. Common Tools for FileEncryption GNU Privacy Guard is file encryption that is open source.  Advantages: Open source, so skilled users are capable of customizing more than other kinds.  Disadvantages: Can only use open-source algorithms. Pg 386
  5. 5. File System Encryption File System Encryption is a method of cryptography used by an operating system that will encrypt groups of files. This will even “store, retrieve, and organize” your files. Pg 386
  6. 6. Common Tools for File SystemEncryption Microsoft Windows Encrypting File System (EFS) helps encrypt for Windows running the NTFS file system.  Advantages: Easily encrypted and decrypted when users access or move files. Also, all files are encrypted to the system as they are saved.  Disadvantages: Never encrypt the system folders, this will cause performance problems. You can not encrypt, and compress a file at the same time. Cannot transfer a file to a system without NTFS or you will lose your encryption. Pg 386-387
  7. 7. Common Tools for File SystemEncryption  ZFS File System is an encryption tool used for the Oracle Solaris ZFS system.  Advantages: Uses AES encryption with 128, 192, or 256 key lengths. Uses hardware acceleration or software algorithms automatically.  Disadvantages: Oracle only. http://download.oracle.com/docs/cd/E19963- 01/html/821-1448/gkkih.html
  8. 8. Whole Disk Encryption Whole disk encryption is a method of cryptography that is used to encrypt everything on the disk to prevent any threats such as data theft. Pg 387
  9. 9. Common Tools for Whole DiskEncryption Windows BitLocker is hardware-enabled, and is used to encrypt anything on the computer, either a whole volume or even a small file.  Advantages: Prevents the hard drive to be accessed in another computer, and does not allow for booting from other operating systems.  Disadvantages: Windows only. Pg 387
  10. 10. Common Tools for Whole DiskEncryption Truecrypt is a whole disk encryption tool that is open-source.  Advantages: Compatible with all recent operating systems. This tool is automatic, transparent, and happens in real time. Hidden volumes, and hidden operating system keep away theft.  Disadvantages: Downloaded, but other than that. Seems like a nice encryption tool. http://www.truecrypt.org/

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