acl/lib_tls/tls/tls_rsa.c

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2014-11-19 00:25:21 +08:00
/*++
* NAME
* tls_rsa
* SUMMARY
* RSA support
* SYNOPSIS
* #include <tls.h>
* #include <tls_private.h>
*
* RSA *tls_tmp_rsa_cb(ssl, export, keylength)
* SSL *ssl; # unused
* int export;
* int keylength;
* DESCRIPTION
* This module maintains parameters for Diffie-Hellman key generation.
*
* tls_tmp_rsa_cb() is a call-back routine for the
* SSL_CTX_set_tmp_rsa_callback() function.
* LICENSE
* .ad
* .fi
* This software is free. You can do with it whatever you want.
* The original author kindly requests that you acknowledge
* the use of his software.
* AUTHOR(S)
* Originally written by:
* Lutz Jaenicke
* BTU Cottbus
* Allgemeine Elektrotechnik
* Universitaetsplatz 3-4
* D-03044 Cottbus, Germany
*
* Updated by:
* Wietse Venema
* IBM T.J. Watson Research
* P.O. Box 704
* Yorktown Heights, NY 10598, USA
*--*/
#include "StdAfx.h"
#ifdef USE_TLS
/* TLS library. */
#include "tls.h"
#include "tls_private.h"
static void free_rsa_fn(void *arg)
{
RSA *rsa = (RSA*) arg;
RSA_free(rsa);
}
/* tls_tmp_rsa_cb - call-back to generate ephemeral RSA key */
RSA *tls_tmp_rsa_cb(SSL *unused_ssl acl_unused, int unused_export acl_unused, int keylength)
{
static __thread RSA *rsa_tmp;
/* Code adapted from OpenSSL apps/s_cb.c */
if (rsa_tmp == 0) {
rsa_tmp = RSA_generate_key(keylength, RSA_F4, NULL, NULL);
acl_pthread_atexit_add(rsa_tmp, free_rsa_fn);
}
return (rsa_tmp);
}
#ifdef TEST
int main(int unused_argc, char **unused_argv)
{
tls_tmp_rsa_cb(0, 1, 512);
tls_tmp_rsa_cb(0, 1, 1024);
tls_tmp_rsa_cb(0, 1, 2048);
tls_tmp_rsa_cb(0, 0, 512);
}
#endif
#endif