SOURCE: file encryption and decryption
hi,
There are too many technics and tricks to use Encryptions/Decryptions. But my suggesstion is to use your own tricks that will be easy and safe for you and hard to another one to decode.
Anyway click here to get a link with source code in c or just copy the following in your browser address:
http://www.gmonline.demon.co.uk/cscene/CS4/CS4-03.html
I think will help you.
Thanks
iqbal_delphidev@yahoo.com
SOURCE: Decryption
I suggest you go to the company's website and have them give you instructions on how to do it if it is even possible.
SOURCE: How I can "Decrypt data files" on Win XP Professional.
Since you reinstalled the OS, the certificate for the user has changed. You can try the following methods, but there is no guaranty it will work.
These method apply only if the computer name and users name stays the same as the original. If the machine name or the users name or the users privilege changed, these method will not work.
Only the following people can decrypt an encrypted file:
· The user who encrypted the file
· Any user who was designated as a recovery agent before the file was encrypted
· Any user who has the public key or private key for the recovery agent or the user who originally encrypted the file
· Any user who has been granted access to the file
Members of the Administrators group cannot decrypt files unless the person who encrypted the files designated them as recovery agents before encrypting the files.
Note You must be the original user who encrypted the file or a designated recovery agent for the file to follow these steps
Method 1:
To remove encryption from a file, follow these steps:
1. Use Windows Explorer to locate the encrypted file that you want to decrypt.
2. Right-click the encrypted file, and then click Properties.
3. On the General tab, click Advanced.
4. Click to clear the Encrypt contents to secure data check box, click OK, and then click OK again.
SOURCE: encryption and decryption(urgent)
Dazzling_ysi: If you do a project youare supposed to do research and not get the answer handed to you. You can ask for help with it and resources and a solution field is not big enough anyhow to write a "project". But to help you with it, this is a very goodresource on the topic:
http://eprint.iacr.org/2003/181.pdf
Let me citate some lines that I think even answer though shortly your question with FULL credit to the author:
" The advantage of multiple encryption: is that it provides bettersecurity because even if some component ciphers are broken or some ofthe secret keys are compromised, the confidentiality can still bemaintained by the remaining encryptions."
Disadvantage and danger:
" If a multiple encryption has a branch thatends with a parallel block, we are then able to construct an adversaryA that breaks it with only one key exposure query and one decryptionquery.
If a multiple encryption has a branch that ends with a sequentialblock, we may then be able to construct an adversary A that breaks itwith only one key exposure query on the last component and onedecryption query."
For more on the topic please read the pdf.
SOURCE: We have encrypted a drive with TrueCrypt but now
spinrite does not break any encryption, it just does what it says on the box.
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