Re: Cryptographic Functions

[David Howe <DaveHowe.Pentest () googlemail com>]

M.D.Mufambisi wrote:
> Hello people.
>
> 1. When a passphrase is used a key in symetric cryptography, how does
> the pass phrase map to the key in an algorithm like AES? ie....how
> many letters correspond to 1 bit? etc?

That is undefined. AES uses a key of fixed size (ok, you can choose the
key size, but within those constraints) but how you get from an ascii
string to a binary key is not part of the definition. In most cases
though, its a simple hash, or minor variation thereof.


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