mirror of
https://github.com/openssl/openssl.git
synced 2024-12-21 06:09:35 +08:00
9b86974e0c
L<foo|foo> is sub-optimal If the xref is the same as the title, which is what we do, then you only need L<foo>. This fixes all 1457 occurrences in 349 files. Approximately. (And pod used to need both.) Reviewed-by: Richard Levitte <levitte@openssl.org>
54 lines
1.5 KiB
Plaintext
54 lines
1.5 KiB
Plaintext
=pod
|
|
|
|
=head1 NAME
|
|
|
|
RAND_load_file, RAND_write_file, RAND_file_name - PRNG seed file
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
#include <openssl/rand.h>
|
|
|
|
const char *RAND_file_name(char *buf, size_t num);
|
|
|
|
int RAND_load_file(const char *filename, long max_bytes);
|
|
|
|
int RAND_write_file(const char *filename);
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
RAND_file_name() generates a default path for the random seed
|
|
file. B<buf> points to a buffer of size B<num> in which to store the
|
|
filename. The seed file is $RANDFILE if that environment variable is
|
|
set, $HOME/.rnd otherwise. If $HOME is not set either, or B<num> is
|
|
too small for the path name, an error occurs.
|
|
|
|
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 to B<max_bytes> are read; starting with OpenSSL 0.9.5,
|
|
if B<max_bytes> is -1, the complete file is read.
|
|
|
|
RAND_write_file() writes a number of random bytes (currently 1024) to
|
|
file B<filename> which can be used to initialize the PRNG by calling
|
|
RAND_load_file() in a later session.
|
|
|
|
=head1 RETURN VALUES
|
|
|
|
RAND_load_file() returns the number of bytes read.
|
|
|
|
RAND_write_file() returns the number of bytes written, and -1 if the
|
|
bytes written were generated without appropriate seed.
|
|
|
|
RAND_file_name() returns a pointer to B<buf> on success, and NULL on
|
|
error.
|
|
|
|
=head1 SEE ALSO
|
|
|
|
L<rand(3)>, L<RAND_add(3)>, L<RAND_cleanup(3)>
|
|
|
|
=head1 HISTORY
|
|
|
|
RAND_load_file(), RAND_write_file() and RAND_file_name() are available in
|
|
all versions of SSLeay and OpenSSL.
|
|
|
|
=cut
|