1. By: Brittany Gilstrap

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. Common Tools for File
Encryption
 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. Common Tools for File
Encryption
 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.
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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.
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6. Common Tools for File System
Encryption
 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.
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7. Common Tools for File System
Encryption
 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. 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.
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9. Common Tools for Whole Disk
Encryption
 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.
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10. Common Tools for Whole Disk
Encryption
 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/