Which character encoding to use if null c14n is used?

Maybe a stupid question, but I cannot derive the answer from the draft:

If minimal canonicalization or Canonical XML has been chosen it is
clear what forms the input of the signature method, because both
methods are using UTF-8 as character encoding.

But what if no canonicalization is used?

Gregor
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Gregor Karlinger
mailto://gregor.karlinger@iaik.at
Institute for Applied Information Processing and Communications
Austria
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