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#1
March 31st, 2008, 09:37 AM
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Crypto Protocol Question - Suppling an IV with my file
Hi all,
Can you please advise: I want to encrypt several files and send it to a remote destination. All files uses the same encryption mechanisem and cipher key. The key is also known to the remote destination. What is the standard method to send the IV of each file? Shall it be added at the begining of the encrypted file? Thanks NBS
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#2
March 31st, 2008, 12:29 PM
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For something that always comes up, I don' t know if any 'standard' way to send the IV
It is typically send first, before the cipher text. Sometimes its send in the RSA packet, if there is space. Obviously, since you need it to decipher the stream, you can't encipher it
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#3
April 2nd, 2008, 11:29 AM
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Putting it at the start of each file is fine. IV's are usually just sent in the open. If you want to be extra secure, you can figure out a way to send them securely if you like.
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