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Abhinav S9-Mar-12 15:45
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Questionstreaming video with c# Pin
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Abhinav S9-Mar-12 5:37
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QuestionC# ASP.net Update Data into a SQL server database Pin
Mike9889-Mar-12 4:52
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Wes Aday9-Mar-12 5:29
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Generali need help???in c# Pin
amira luis9-Mar-12 0:25
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OriginalGriff9-Mar-12 0:27
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Questioninteracting with a webiste in c# Pin
james bradbery8-Mar-12 21:21
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Dave Kreskowiak9-Mar-12 3:16
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QuestionThe WebService still returns "Connection Successful" even SQL Server is off. Please Help. Pin
MarkSquall8-Mar-12 18:58
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Bernhard Hiller8-Mar-12 21:26
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jschell9-Mar-12 5:16
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MarkSquall11-Mar-12 21:33
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QuestionEncryption and decryption Pin
sandy_418-Mar-12 17:19
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AnswerRe: Encryption and decryption PinPopular
OriginalGriff8-Mar-12 20:20
mveOriginalGriff8-Mar-12 20:20 
The Key is the actual data that will be used to encrypt or decrypt the whole message. Think of it as the "Password" to the message.
The IV is a set of random numbers used as a "salt" to start the encryption process.

If all your messages start the same way, then if you know the start of one message, it is easier for you to work out the key for a different message - because you know some of the data that made it up. The IV prevents that happening by providing a set of random numbers to start the encryption process, which vary from message to message. That is why they are transmitted in clear, normally as a block of bytes at the front of the message. Knowing the IV values gives you nothing if you are trying to hack the message - it is normally XORed with the first block of data before encryption so it becomes less readable. Subsequent blocks of data use the output from the first block to generate the IV for the second, and so forth.
If you are feeling particularly paranoid, then just prefix your actual data with a block full of random rubbish, so that by the time the encryptor gets to any duplicated data it has already mangled the IV to death...Laugh | :laugh:
Ideological Purity is no substitute for being able to stick your thumb down a pipe to stop the water

GeneralRe: Encryption and decryption Pin
sandy_419-Mar-12 0:12
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GeneralRe: Encryption and decryption Pin
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