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Questions tagged [encryption]

Encryption is transforming information through a cipher to protect it from unauthorized access.

Encryption is the process of taking some information (the plain text), and transforming it (usually with a cypher and a key) so that it is secure. Assuming a sufficiently strong cypher and key have been chosen, this cyphertext can be shared widely, without the information being compromised.

The reverse of Encryption is Decryption, where the process is reversed (normally by someone holding the key and cypher details) to return the information.

See the Wikipedia Page for more details.

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Encrypting a link between two data outlets on the same LAN

I have two systems in a rack that are directly linked together with a 0.25m Cat 5e cable so they can exchange data via NFS. As you may know, plain NFS does not inherently support encryption or user authentication so the data is potentially…
Linker3000
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ESXi encypted VMFS?

Does anyone know a (free?) way to have a fully encrypted local-disk (no NFS,iSCSI,FC) VMFS inside the hypervisor itself? I am using ESXi 4.1 U2.
CyberOptic
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Fast, reliable, open source encryption for large logs

I intend to use cloud storage for some of my application logs. These logs might contain confidential business data, so I would like to encrypt them prior to upload. For security reasons, I prefer using large symmetric key cryptography over simple…
Adam Matan
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What is the maximum supported size of a truecrypt file?

What is the maximum size a truecrypt container can support? I'm trying to encrypt and store around 1TB data in a truecrypt container file. Is this a recommended usage?
BlueGene
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Cisco 877 VPN: PPTP encryption not working

A followup to this question. I have a Cisco 877 ADSL router configured (at last!) to act as a VPN server; it supports both PPTP and L2TP VPNs, and I can successfully connect to it from Windows computers using the built-in VPN software. There is only…
Massimo
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Does MS SQL 2005 encryption protect data in the case of physical server access?

I am looking into MS SQL 2005 encryption (not 2008, so TDE is out), and I believe I understand the concept of how a column is encrypted. The OS uses the service credentials to encrypt the service master key, which is used to encrypt the database…
Paul Kroon
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Shared encrypted network volume accessible from for both Macs and PCs

Due to financial regulations, I need to set up a shared encrypted network volume with the following properties: Shared encrypted network volume with read/write access for specific users. Administrators must not be able to read/write files in the…
Egil Hansen
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Asymmetric ciphers for protecting IMAP server-side mail folder

I'm looking for a guide, or just a list of tools with some advice. I want to protect the emails stored on the server-side (in a Courier-IMAP server). A basic flowchart to illustrate the idea. [Unencrypted mail comes in] | …
vbence
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Problem with setting up partitions - encrypted swap partition won't mount

Here's the layout I have; I'm using Software RAID10, LVM, and Encryption: LVM VG vg0, LV main - 2.0 TB Linux device-mapper (linear) #1 2.0 TB K crypto (vg0-main_crypt) Encrypted volume (vg0-main_crypt) - 2.0TB Linux…
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Suggestion for encrypting database files in SQL 2008 Standard Cluster

I have an SQL 2008 Server configured as a fail-over cluster an have a requirement to have the database files (mdf/ldf) encrypted. We have tried to use EFS for this but there are a lot of issues doing this and often the file get corrupted and…
Brettski
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Cannot open encrypted email in Outlook 2007. Error: "Cannot open this item. Your Digital ID name cannot be found by the underlying security system."

This problem occurred after a user's computer was replaced. He reapplied for a new personal certificate from the CA, which is our SBS2003 server. Ever since, he cannot decrypt emails we send him. Here's what I've done so far. I've deleted the…
fourleggedfish
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Should I encrypt my home directory (Ubuntu Server)? Case scenarios: Dev Server, Production Server, Desktop, etc

I did some searching and found that the biggest downfall is performance. How big is the difference between encrypted vs non-encrypted? What types of setups would you use it for and which wouldn't? Dev/Build Server? Demo Server? Production…
user29600
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IIS7 & ASP.NET Encryption System Differences

I've got a application I've recently ported From IIS6 (Windows 2003) (7 Classic Pipeline) to IIS7 (Windows 2008) Integrated Pipeline. The problem I've noticed is password hashes built on the IIS6 system no longer match when we try to log in on the…
Aren B
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Storing RSA Private Key un-encrypted

We have our infrastructure on amazon ec2. Because we are growing we are setting up a basic Web Server AMI image that we will use to launch new servers as we need them. The main problem is that when the machine starts, it doesnt launch httpd because…
Julio Andrés Viera
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SASL (Postfix) authentication with MySQL and Blowfish pre-encrypted passwords

I have a Rails app with the Devise authentication gem running user registration and login. I want to use the db table that Devise populates when a user registers as the table that Postfix uses to authenticate users. The table has all the fields…
webo
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