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How many bytes does RijndaelManaged return for a given input size?

Last Modified: 2012-05-11
I'm using RijndaelManaged to encrypt some data which will then be saved in the database. I'm trying to figure out how large the column has to be. How many bytes does RM return for a given string of length N?

Also, can the Key and Initialization Vector be any collection of bytes as long as they are of the right length?

Thanks in advance.
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