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Encrypted File upload using commons FileUpload

Posted on 2007-11-18
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Last Modified: 2008-09-01
I am using Apache HTTPClient & commons FileUpload APIs for uploading files. I want to encrypt the file.

Thanks.
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Question by:sangameshrh
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LVL 86

Expert Comment

by:CEHJ
ID: 20310959
Why don't you use https?
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Author Comment

by:sangameshrh
ID: 20311021
Any other ways than HTTPS??
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Expert Comment

by:CEHJ
ID: 20311203
Well that's by far the simplest. What are your security concerns?
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Author Comment

by:sangameshrh
ID: 20311249
Nothing in particular. I dont want to go for HTTPS.
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Expert Comment

by:CEHJ
ID: 20311402
Then for each Part you add to the multipart upload, you will need to encrypt it and do the reverse at the other end
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Author Comment

by:sangameshrh
ID: 20311417
I am uploading only one file at a time. How can a file be encrypted & decrypted? Any algorithms?
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Accepted Solution

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CEHJ earned 1000 total points
ID: 20311518
You need to operate on the stream. See http://www.exampledepot.com/egs/javax.crypto/DesFile.html
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Assisted Solution

by:ysnky
ysnky earned 1000 total points
ID: 20311569
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Author Comment

by:sangameshrh
ID: 20333895
In the example given by CEHJ
I want give my own key, think "sandeepxyz123"
I dont want to use the key generated by
KeyGenerator.getInstance("DES").generateKey();

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Author Comment

by:sangameshrh
ID: 20333946
Actually The encryption part is at the client end & decryption part is at the server end.
The keys used in both the case should be the same.
How can I know it?
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LVL 86

Expert Comment

by:CEHJ
ID: 20334123
>>How can I know it?

You can't. You'd have to tell them the key. That's just one of the many reasons you should use SSL - it handles the keys (and everything else) for you
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