mirror of
https://gitee.com/acl-dev/acl.git
synced 2024-12-15 09:20:52 +08:00
94 lines
2.0 KiB
C
94 lines
2.0 KiB
C
/*++
|
|
* NAME
|
|
* tls_seed 3
|
|
* SUMMARY
|
|
* TLS PRNG seeding routines
|
|
* SYNOPSIS
|
|
* #include <tls.h>
|
|
* #include <tls_private.h>
|
|
*
|
|
* int tls_ext_seed(nbytes)
|
|
* int nbytes;
|
|
*
|
|
* void tls_int_seed()
|
|
* DESCRIPTION
|
|
* tls_ext_seed() requests the specified number of bytes
|
|
* from the tlsmgr(8) PRNG pool and updates the local PRNG.
|
|
* The result is zero in case of success, -1 otherwise.
|
|
*
|
|
* tls_int_seed() mixes the process ID and time of day into
|
|
* the PRNG pool. This adds a few bits of entropy with each
|
|
* call, provided that the calls aren't made frequently.
|
|
* LICENSE
|
|
* .ad
|
|
* .fi
|
|
* The Secure Mailer license must be distributed with this
|
|
* software.
|
|
* AUTHOR(S)
|
|
* Wietse Venema
|
|
* IBM T.J. Watson Research
|
|
* P.O. Box 704
|
|
* Yorktown Heights, NY 10598, USA
|
|
*--*/
|
|
|
|
#include "StdAfx.h"
|
|
#ifdef ACL_UNIX
|
|
#include <sys/time.h> /* gettimeofday() */
|
|
#include <unistd.h> /* getpid() */
|
|
#elif defined(WIN32)
|
|
#include <process.h>
|
|
#endif
|
|
|
|
#ifdef USE_TLS
|
|
|
|
/* OpenSSL library. */
|
|
|
|
#include <openssl/rand.h> /* RAND_seed() */
|
|
|
|
/* TLS library. */
|
|
|
|
#include "tls.h"
|
|
#include "tls_mgr.h"
|
|
#include "tls_private.h"
|
|
|
|
/* Application-specific. */
|
|
|
|
/* tls_int_seed - add entropy to the pool by adding the time and PID */
|
|
|
|
#ifdef WIN32
|
|
# define getpid _getpid
|
|
#endif
|
|
|
|
void tls_int_seed(void)
|
|
{
|
|
static __thread struct {
|
|
#ifdef WIN32
|
|
int pid;
|
|
#else
|
|
pid_t pid;
|
|
#endif
|
|
struct timeval tv;
|
|
} randseed;
|
|
|
|
if (randseed.pid == 0)
|
|
randseed.pid = getpid();
|
|
gettimeofday(&randseed.tv, NULL);
|
|
RAND_seed(&randseed, sizeof(randseed));
|
|
}
|
|
|
|
/* tls_ext_seed - request entropy from tlsmgr(8) server */
|
|
|
|
int tls_ext_seed(int nbytes)
|
|
{
|
|
ACL_VSTRING *buf;
|
|
int status;
|
|
|
|
buf = acl_vstring_alloc(nbytes);
|
|
status = tls_mgr_seed(buf, nbytes);
|
|
RAND_seed(acl_vstring_str(buf), (int) ACL_VSTRING_LEN(buf));
|
|
acl_vstring_free(buf);
|
|
return (status == TLS_MGR_STAT_OK ? 0 : -1);
|
|
}
|
|
|
|
#endif
|