This is especially useful for deleting the source file or folder after encryption so that the only remaining file is the encrypted version. If you decrypt a previously encrypted monitored file, then restore to a point before the file was decrypted, System Restore will not revert the file to its encrypted state, it will remain decrypted after the restore.
The *.PFX file format is based on the PKCS #12 standard which is used to specify a portable format for storing or transporting a user’s private keys, certificates, miscellaneous secrets, etc. Windows Server 2003 incorporates the changes introduced in Windows XP Professional and adds the following: A default domain Public Key recovery policy is created, and a recovery agent certificate is issued to the Administrator account. Cons / The software can be difficult to use with its complicated encryption process, and the manufacturer's website gives you almost no help with troubleshooting it.
A number of these issues, third-party considerations, and post introduction issues can be resolved by reviewing the following articles. This eliminates the need for looking up users in Active Directory every time a new user is added to an encrypted file. The Triple DES (3DES) encryption algorithm can be used to replace Data Encryption Standard X (DESX), and after XP SP1, Advanced Encryption Standard (AES) becomes the default encryption algorithm for EFS.
For additional details, please refer to the Microsoft Knowledge Base at . There are also well known causes for many of the common problems that arise.
Although there is no way to determine if EFS is being currently used, several registry keys may be examined to determine if EFS has ever been used by the user on the machine. It does not matter how cryptographically secure you make the code, you need to supply this with the CD in plain text or an legitimate user cannot activite the software. This file encryption and password protection tool encrypts with the hack-proof Blowfish algorithm.
Point to implementation strategies and best practices. Does not require a certification authority or PKI infrastructure.
The following articles explain how. “” (223338) provides three reasons for using a CA. “” (295680) explains that using cipher /k will archive the self-signed certificate and request a new EFS certificate from the CA. Through a Windows Server 2003 enterprise CA, users may obtain a certificate employable by EFS using one of the three following methods: Automatically using user certificate auto-enrollment On-demand enrollment using an enterprise CA and properly configured certificate templates Manual enrollment by the end-user Using an enterprise CA will ensure that users easily get certificates for use by EFS. The following are some recommended white papers, along with other useful references: “” is a large white paper which thoroughly documents how EFS works in these operating systems and is must reading for the IT manager or others responsible for designing and deploying formal EFS policy in organizations which use or will use EFS in these operating systems. For signing the file, I used this: For verifying the file, I used this: BTW: I observed that the XML signature verification ignores XML comments. Important System cryptography applies to both EFS and IP Security (IPSec).