Remove mention of link between message digests and public key algorithms.

[openssl.git] / doc / man3 / RAND_load_file.pod

diff --git a/doc/man3/RAND_load_file.pod b/doc/man3/RAND_load_file.pod
index 0a0c4bca6b6557da5c0b1fd6dda4ee1a14b59995..2fe932fd3f42839b11a9c92cf27b6ab8c34529ea 100644 (file)
--- a/doc/man3/RAND_load_file.pod
+++ b/doc/man3/RAND_load_file.pod
@@ -20,8 +20,12 @@ RAND_load_file() reads a number of bytes from file B<filename> and
 adds them to the PRNG. If B<max_bytes> is non-negative,
 up to B<max_bytes> are read;
 if B<max_bytes> is -1, the complete file is read.
+Do not load the same file multiple times unless its contents have
+been updated by RAND_write_file() between reads.
+Also, note that B<filename> should be adequately protected so that an
+attacker cannot replace or examine the contents.
 
-RAND_write_file() writes a number of random bytes (currently 256) to
+RAND_write_file() writes a number of random bytes (currently 128) to
 file B<filename> which can be used to initialize the PRNG by calling
 RAND_load_file() in a later session.
 
@@ -54,10 +58,10 @@ B<num> is too small for the path name, an error occurs.
 
 =head1 RETURN VALUES
 
-RAND_load_file() returns the number of bytes read.
+RAND_load_file() returns the number of bytes read or -1 on error.
 
-RAND_write_file() returns the number of bytes written, and -1 if the
-bytes written were generated without appropriate seed.
+RAND_write_file() returns the number of bytes written, or -1 if the
+bytes written were generated without appropriate seeding.
 
 RAND_file_name() returns a pointer to B<buf> on success, and NULL on
 error.
@@ -68,10 +72,10 @@ L<RAND_bytes(3)>, L<RAND_add(3)>
 
 =head1 HISTORY
 
-A comment in the source since at least OpenSSL version 1.0.2 said that
+A comment in the source since at least OpenSSL 1.0.2 said that
 RAND_load_file() and RAND_write_file() were only intended for regular files,
 and not really device special files such as C</dev/random>.  This was
-poorly enforced before OpenSSL version 1.1.1.
+poorly enforced before OpenSSL 1.1.1.
 
 =head1 COPYRIGHT