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RT3462: Document actions when data==NULL

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If data is NULL, return the size needed to hold the
derived key.  No other API to do this, so document
the behavior.

Reviewed-by: Richard Levitte <levitte@openssl.org>
This commit is contained in:
Rich Salz 2014-09-08 11:48:34 -04:00
parent 429a25b97d
commit 5aed169305
1 changed files with 4 additions and 1 deletions
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5
doc/crypto/EVP_BytesToKey.pod
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@ -55,7 +55,10 @@ the IV.
=head1 RETURN VALUES
EVP_BytesToKey() returns the size of the derived key in bytes, or 0 on error.
If B<data> is NULL, then EVP_BytesToKey() returns the number of bytes
needed to store the derived key.
Otherwise, EVP_BytesToKey() returns the size of the derived key in bytes,
or 0 on error.
=head1 SEE ALSO