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.NET C# file encryption : unicode txt, docx, xlsx

Posted on 2013-11-29
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This content is from book "Professional C# 2012 and .NET 4.5".

In this book it is written how to encrypt network stream but I need to encrypt files :
unicode txt, docx, xlsx.
I prefer security over speed.
As I understand : I need to use SHA512, DSA 4096.
There is no point in using ECDSA 320 bits because it is equal only to DSA 2048 bits.
Can I get useful examples ?

Thanks
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Question by:urban20
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btan earned 2000 total points
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by:urban20
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Thanks, I will give a try.
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