From 5aed169305941fb1eba15fd4bacc0f998b0e43f7 Mon Sep 17 00:00:00 2001 From: Rich Salz Date: Mon, 8 Sep 2014 11:48:34 -0400 Subject: [PATCH] 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: Richard Levitte --- doc/crypto/EVP_BytesToKey.pod | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/doc/crypto/EVP_BytesToKey.pod b/doc/crypto/EVP_BytesToKey.pod index d07ae6c7b5..cd3aa027ee 100644 --- a/doc/crypto/EVP_BytesToKey.pod +++ b/doc/crypto/EVP_BytesToKey.pod @@ -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 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 -- 2.25.1