Details on how data is being kept in memory/on disks, most frequently being applied to databases, media banks and backup-recovery solutions.
18
votes
6answers
3k views
How can I reliably erase all information on a hard drive?
As storage technologies change over time, using different encodings and remappings to deal with sector errors, the best way to permanently erase/wipe/shred data changes also.
Methods for flash drives ...
18
votes
4answers
4k views
Why is writing zeros (or random data) over a hard drive multiple times better than just doing it once?
Lots of different programs, such as Darik's Boot and Nuke, let you write over a hard drive multiple times under the guise of it being more secure than just doing it once. Why?
5
votes
1answer
800 views
When using AES and CBC, is it necessary to keep the IV secret?
If I encrypt some data with a randomly generated Key and Initialization Vector, then store all three pieces of information in the same table row; is it necessary to encrypt the IV as well as the Key?
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0
votes
2answers
190 views
Where do I securely store application-specific symmetric key?
I am writing an application App1. This application uses SQLite database and I plan to encrypt it using AES256. For symmetric encryption I need a key, which I need to store somewhere.
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