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GNU/Linux man pages

Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :

ISBN : 978-2-7460-9712-4
EAN : 9782746097124
(Editions ENI)

GNU/Linux

CentOS 4.8

i386

RAND_write_file(3ssl)


RAND_load_file

RAND_load_file

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUES
SEE ALSO
HISTORY

NAME

RAND_load_file, RAND_write_file, RAND_file_name − PRNG seed file

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);

DESCRIPTION

RAND_file_name() generates a default path for the random seed file. buf points to a buffer of size 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 num is too small for the path name, an error occurs.

RAND_load_file() reads a number of bytes from file filename and adds them to the PRNG . If max_bytes is non−negative, up to to max_bytes are read; starting with OpenSSL 0.9.5, if max_bytes is −1, the complete file is read.

RAND_write_file() writes a number of random bytes (currently 1024) to file filename which can be used to initialize the PRNG by calling RAND_load_file() in a later session.

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 buf on success, and NULL on error.

SEE ALSO

rand(3), RAND_add(3), RAND_cleanup(3)

HISTORY

RAND_load_file(), RAND_write_file() and RAND_file_name() are available in all versions of SSLeay and OpenSSL.



RAND_write_file(3ssl)