Commit 5aed1693 authored by Rich Salz's avatar Rich Salz
Browse files

RT3462: Document actions when data==NULL 



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: default avatarRichard Levitte <levitte@openssl.org>
parent 429a25b9

doc/crypto/EVP_BytesToKey.pod

+4 −1
Original line number Diff line number Diff line
@@ -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