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I want to compress some files (into the ZIP format) and encrypt them if possible using C#. Is there some way to do this?
Can encryption be done as a part of the compression itself?
Started by Niyaz on
, 10 posts
by 10 people.
Answer Snippets (Read the full thread at stackoverflow):
The GZipStream class a Zip file to compress....
They can be done chained (encrypt a compressed stream or compress useful classes to compress data in zip format and support rights management.
In the System.Security namespace.
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I have an encrypted file (AES Symmetric encryption).For backup purposes and to save disk space, Can I compress (lossless) the file without worrying about messing up the decryption? If so, can you recommend some good compression programs for this purpose...
Started by BlueGene on
, 12 posts
by 12 people.
Answer Snippets (Read the full thread at serverfault):
You can compress it, but it is unlikely to save much are simply compressed....
Usually in these situations you compress first, then encrypt, as you get better compression ratios want to use PAR2 after you create the archive.
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I am a very frequent user of sshfs for mounting various disks over the network. I do however have a very small machine (with an atom processor) from which I need to mount a directory using sshfs.
Is it possible to disable all compression, and perhaps ...
Started by bjarkef on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at superuser):
But you may want to check your ~/.ssh/config file for settings regarding ....
And it looks like compression is disabled by default as you have to request it with the -C switch.
There is no way to disable encryption - this is ssh after all.
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Ask your Facebook Friends
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My client wants to encrypt/compress the html-code for their medical books in the iPhone bundle, to protect their IP.
Whats is a good way to prepare this file for the app bundle, and what complementary libraries (C, Obj-C) should I use to do the decryption...
Started by avocade on
, 6 posts
by 6 people.
Answer Snippets (Read the full thread at stackoverflow):
See the "Security Overview" document and the CryptoExercise sample code for ....
One would easily be able to access the decrypted documents on a jailbroken device .
I would keep the documents encrypted if I were you and just decrypt them as needed.
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Greetings!
Anyone using Red gate (www.red-gate.com) or another third party tool to do this?
We use SQL 2008 Web Edition.
Thanks!
Started by samsmith on
, 7 posts
by 7 people.
Answer Snippets (Read the full thread at serverfault):
We have a 70GB DB and was can compress this to about 11GB xp_cmdshell to compress your .BAK file after sql....
SQL 2008 has the native abilty to compress backups and when the database uses tranparent data features and they work a treat.
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I want to compress a folder using NTFS compression in .NET. I found this post , but it does not work. It throws an exception ("Invalid Parameter").
DirectoryInfo directoryInfo = new DirectoryInfo( destinationDir ); if( ( directoryInfo.Attributes & FileAttributes...
Started by decasteljau on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
Also, note that setting compression on a directory in NTFS does not compress all to compress the entire....
Dir.InvokeMethod("Compress", null, null); uint ret = (uint)(outParams.Properties["ReturnValue"].Value on the directory.
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I'm trying to find an zip compression and encryption component with encryption suitable for use by the US Federal Government , so I can't use Zip 2.0 encryption, it has to be AES or the like. I've already found SharpZipLib (can't do AES encyrption), and...
Started by MatthewMartin on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
If money is a big issue, you could take an open source library like this http://www.codeplex.com/DotNetZip , which now has AES support
What about 7-Zip ? It's open source under the LGPL (so should be usable in your project) and according to the spec ... .
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I learned this today while doing some research on the type of compression\encryption method used on the CVM file I was trying to decode.
If you open a CVM file(or possibly any archive file) in a hex program and see something along the lines of
ROFSROFSBLD...
Started by Anomy on
, 4 posts
by 3 people.
Answer Snippets (Read the full thread at xentax):
Original Source
http://homepage1.nifty.com/~hin....
Another bit of information I can only make a little sense out since it is translated from Japanese, and I have had no success using it, but someone else may realize what is being done here better than I .
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Hi All,
I am new to Iphone development , I want to create an application in which I have to upload some data on php server using my Iphone application. For this I have an file on the Iphone whose content I have to upload on php server. For this I have...
Started by Gaurav Arora on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
The best way would probably be to encrypt NSData with a public key crypto system, distribute a public key with the application, encrypt, then only your PHP application would be able to decrypt not sure what the iPhone has in the way of ....
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I have a number of folders on my HDD that have been encrypted using the build-in XP folder encryption.
How can I get a list of all of the locations that have been encrypted? Search doesn't seem to have an option for it.
Started by chris on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at superuser):
Change the color that Windows Explorer uses to display the files:
Double-click My Computer... .
Use the CIPHER command.
How can I find all the encrypted files in Windows XP?
You can use any of the following 3 methods to locate encrypted files:
1.
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