Add SNI support to redbean and improve SSL perf

This change makes SSL virtual hosting possible. You can now load
multiple certificates for multiple domains and redbean will just
figure out which one to use, even if you only have 1 ip address.
You can also use a jumbo certificate that lists all your domains
in the the subject alternative names.

This change also makes performance improvements to MbedTLS. Here
are some benchmarks vs. cc1920749e

                                   BEFORE    AFTER   (microsecs)
suite_ssl.com                     2512881   191738 13.11x faster
suite_pkparse.com                   36291     3295 11.01x faster
suite_x509parse.com                854669   120293  7.10x faster
suite_pkwrite.com                    6549     1265  5.18x faster
suite_ecdsa.com                     53347    18778  2.84x faster
suite_pk.com                        49051    18717  2.62x faster
suite_ecdh.com                      19535     9502  2.06x faster
suite_shax.com                      15848     7965  1.99x faster
suite_rsa.com                      353257   184828  1.91x faster
suite_x509write.com                162646    85733  1.90x faster
suite_ecp.com                       20503    11050  1.86x faster
suite_hmac_drbg.no_reseed.com       19528    11417  1.71x faster
suite_hmac_drbg.nopr.com            12460     8010  1.56x faster
suite_mpi.com                      687124   442661  1.55x faster
suite_hmac_drbg.pr.com              11890     7752  1.53x faster

There aren't any special tricks to the performance imporvements.
It's mostly due to code cleanup, assembly and intel instructions
like mulx, adox, and adcx.
This commit is contained in:
Justine Tunney 2021-07-19 14:55:20 -07:00
parent f3e28aa192
commit 398f0c16fb
190 changed files with 14367 additions and 8928 deletions

View file

@ -1,9 +1,27 @@
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:4;tab-width:4;coding:utf-8 -*-│
vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi
Copyright The Mbed TLS Contributors
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0 │
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
#include "libc/bits/bits.h"
#include "libc/calls/calls.h"
#include "libc/calls/struct/dirent.h"
#include "libc/calls/struct/stat.h"
#include "libc/fmt/fmt.h"
#include "libc/limits.h"
#include "libc/log/log.h"
#include "libc/mem/mem.h"
#include "libc/stdio/stdio.h"
#include "net/http/http.h"
@ -189,30 +207,6 @@ static int x509_profile_check_key( const mbedtls_x509_crt_profile *profile,
return -1;
}
/*
* Like memcmp, but case-insensitive and always returns -1 if different
*/
static int x509_memcasecmp( const void *s1, const void *s2, size_t len )
{
size_t i;
unsigned char diff;
const unsigned char *n1 = s1, *n2 = s2;
for( i = 0; i < len; i++ )
{
diff = n1[i] ^ n2[i];
if( diff == 0 )
continue;
if( diff == 32 &&
( ( n1[i] >= 'a' && n1[i] <= 'z' ) ||
( n1[i] >= 'A' && n1[i] <= 'Z' ) ) )
{
continue;
}
return -1;
}
return 0;
}
/*
* Return 0 if name matches wildcard, -1 otherwise
*/
@ -234,7 +228,7 @@ static int x509_check_wildcard( const char *cn, const mbedtls_x509_buf *name )
if( cn_idx == 0 )
return -1;
if( cn_len - cn_idx == name->len - 1 &&
x509_memcasecmp( name->p + 1, cn + cn_idx, name->len - 1 ) == 0 )
memcasecmp( name->p + 1, cn + cn_idx, name->len - 1 ) == 0 )
{
return 0;
}
@ -258,7 +252,7 @@ static int x509_string_cmp( const mbedtls_x509_buf *a, const mbedtls_x509_buf *b
if( ( a->tag == MBEDTLS_ASN1_UTF8_STRING || a->tag == MBEDTLS_ASN1_PRINTABLE_STRING ) &&
( b->tag == MBEDTLS_ASN1_UTF8_STRING || b->tag == MBEDTLS_ASN1_PRINTABLE_STRING ) &&
a->len == b->len &&
x509_memcasecmp( a->p, b->p, b->len ) == 0 )
memcasecmp( a->p, b->p, b->len ) == 0 )
{
return 0;
}
@ -327,7 +321,7 @@ static int x509_get_version( unsigned char **p,
const unsigned char *end,
int *ver )
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
int ret = MBEDTLS_ERR_THIS_CORRUPTION;
size_t len;
if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_CONSTRUCTED | 0 ) ) )
@ -358,7 +352,7 @@ static int x509_get_dates( unsigned char **p,
mbedtls_x509_time *from,
mbedtls_x509_time *to )
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
int ret = MBEDTLS_ERR_THIS_CORRUPTION;
size_t len;
if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) )
@ -381,7 +375,7 @@ static int x509_get_uid( unsigned char **p,
const unsigned char *end,
mbedtls_x509_buf *uid, int n )
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
int ret = MBEDTLS_ERR_THIS_CORRUPTION;
if( *p == end )
return 0;
uid->tag = **p;
@ -402,7 +396,7 @@ static int x509_get_basic_constraints( unsigned char **p,
int *ca_istrue,
int *max_pathlen )
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
int ret = MBEDTLS_ERR_THIS_CORRUPTION;
size_t len;
/*
* BasicConstraints ::= SEQUENCE {
@ -445,7 +439,7 @@ static int x509_get_ns_cert_type( unsigned char **p,
const unsigned char *end,
unsigned char *ns_cert_type)
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
int ret = MBEDTLS_ERR_THIS_CORRUPTION;
mbedtls_x509_bitstring bs = { 0, 0, NULL };
if( ( ret = mbedtls_asn1_get_bitstring( p, end, &bs ) ) )
return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
@ -461,7 +455,7 @@ static int x509_get_key_usage( unsigned char **p,
const unsigned char *end,
unsigned int *key_usage)
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
int ret = MBEDTLS_ERR_THIS_CORRUPTION;
size_t i;
mbedtls_x509_bitstring bs = { 0, 0, NULL };
if( ( ret = mbedtls_asn1_get_bitstring( p, end, &bs ) ) )
@ -487,7 +481,7 @@ static int x509_get_ext_key_usage( unsigned char **p,
const unsigned char *end,
mbedtls_x509_sequence *ext_key_usage)
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
int ret = MBEDTLS_ERR_THIS_CORRUPTION;
if( ( ret = mbedtls_asn1_get_sequence_of( p, end, ext_key_usage, MBEDTLS_ASN1_OID ) ) )
return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
/* Sequence length must be >= 1 */
@ -528,7 +522,7 @@ static int x509_get_subject_alt_name( unsigned char **p,
const unsigned char *end,
mbedtls_x509_sequence *subject_alt_name )
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
int ret = MBEDTLS_ERR_THIS_CORRUPTION;
size_t len, tag_len;
mbedtls_asn1_buf *buf;
unsigned char tag;
@ -543,7 +537,7 @@ static int x509_get_subject_alt_name( unsigned char **p,
while( *p < end )
{
mbedtls_x509_subject_alternative_name dummy_san_buf;
memset( &dummy_san_buf, 0, sizeof( dummy_san_buf ) );
mbedtls_platform_zeroize( &dummy_san_buf, sizeof( dummy_san_buf ) );
tag = **p;
(*p)++;
if( ( ret = mbedtls_asn1_get_len( p, end, &tag_len ) ) )
@ -753,7 +747,7 @@ static int x509_get_crt_ext( unsigned char **p,
mbedtls_x509_crt_ext_cb_t cb,
void *p_ctx )
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
int ret = MBEDTLS_ERR_THIS_CORRUPTION;
size_t len;
unsigned char *end_ext_data, *start_ext_octet, *end_ext_octet;
if( *p == end )
@ -915,13 +909,13 @@ static int x509_crt_parse_der_core( mbedtls_x509_crt *crt,
mbedtls_x509_crt_ext_cb_t cb,
void *p_ctx )
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
int ret = MBEDTLS_ERR_THIS_CORRUPTION;
size_t len;
unsigned char *p, *end, *crt_end;
mbedtls_x509_buf sig_params1, sig_params2, sig_oid2;
memset( &sig_params1, 0, sizeof( mbedtls_x509_buf ) );
memset( &sig_params2, 0, sizeof( mbedtls_x509_buf ) );
memset( &sig_oid2, 0, sizeof( mbedtls_x509_buf ) );
mbedtls_platform_zeroize( &sig_params1, sizeof( mbedtls_x509_buf ) );
mbedtls_platform_zeroize( &sig_params2, sizeof( mbedtls_x509_buf ) );
mbedtls_platform_zeroize( &sig_oid2, sizeof( mbedtls_x509_buf ) );
/*
* Check for valid input
*/
@ -1146,7 +1140,7 @@ static int mbedtls_x509_crt_parse_der_internal( mbedtls_x509_crt *chain,
mbedtls_x509_crt_ext_cb_t cb,
void *p_ctx )
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
int ret = MBEDTLS_ERR_THIS_CORRUPTION;
mbedtls_x509_crt *crt = chain, *prev = NULL;
/*
* Check for valid input
@ -1354,7 +1348,7 @@ int mbedtls_x509_crt_parse( mbedtls_x509_crt *chain,
#if defined(MBEDTLS_PEM_PARSE_C)
if( buf_format == MBEDTLS_X509_FORMAT_PEM )
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
int ret = MBEDTLS_ERR_THIS_CORRUPTION;
mbedtls_pem_context pem;
/* 1 rather than 0 since the terminating NULL byte is counted in */
while( buflen > 1 )
@ -1434,7 +1428,7 @@ int mbedtls_x509_crt_parse( mbedtls_x509_crt *chain,
*/
int mbedtls_x509_crt_parse_file( mbedtls_x509_crt *chain, const char *path )
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
int ret = MBEDTLS_ERR_THIS_CORRUPTION;
size_t n;
unsigned char *buf;
if( ( ret = mbedtls_pk_load_file( path, &buf, &n ) ) )
@ -1469,7 +1463,7 @@ int mbedtls_x509_crt_parse_path( mbedtls_x509_crt *chain, const char *path )
DIR *dir = opendir( path );
if( dir == NULL )
return( MBEDTLS_ERR_X509_FILE_IO_ERROR );
memset( &sb, 0, sizeof( sb ) );
mbedtls_platform_zeroize( &sb, sizeof( sb ) );
while( ( entry = readdir( dir ) ) != NULL )
{
snp_ret = mbedtls_snprintf( entry_name, sizeof entry_name,
@ -1588,7 +1582,7 @@ static int x509_info_subject_alt_name( char **buf, size_t *size,
*subject_alt_name,
const char *prefix )
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
int ret = MBEDTLS_ERR_THIS_CORRUPTION;
size_t n = *size;
char *p = *buf;
const mbedtls_x509_sequence *cur = subject_alt_name;
@ -1596,7 +1590,7 @@ static int x509_info_subject_alt_name( char **buf, size_t *size,
int parse_ret;
while( cur != NULL )
{
memset( &san, 0, sizeof( san ) );
mbedtls_platform_zeroize( &san, sizeof( san ) );
parse_ret = mbedtls_x509_parse_subject_alt_name( &cur->buf, &san );
if( parse_ret )
{
@ -1750,7 +1744,7 @@ static int x509_info_subject_alt_name( char **buf, size_t *size,
int mbedtls_x509_parse_subject_alt_name( const mbedtls_x509_buf *san_buf,
mbedtls_x509_subject_alternative_name *san )
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
int ret = MBEDTLS_ERR_THIS_CORRUPTION;
switch( san_buf->tag &
( MBEDTLS_ASN1_TAG_CLASS_MASK |
MBEDTLS_ASN1_TAG_VALUE_MASK ) )
@ -1764,7 +1758,7 @@ int mbedtls_x509_parse_subject_alt_name( const mbedtls_x509_buf *san_buf,
ret = x509_get_other_name( san_buf, &other_name );
if( ret )
return ret;
memset( san, 0, sizeof( mbedtls_x509_subject_alternative_name ) );
mbedtls_platform_zeroize( san, sizeof( mbedtls_x509_subject_alternative_name ) );
san->type = MBEDTLS_X509_SAN_OTHER_NAME;
memcpy( &san->san.other_name,
&other_name, sizeof( other_name ) );
@ -1775,7 +1769,7 @@ int mbedtls_x509_parse_subject_alt_name( const mbedtls_x509_buf *san_buf,
*/
case( MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_X509_SAN_DNS_NAME ):
{
memset( san, 0, sizeof( mbedtls_x509_subject_alternative_name ) );
mbedtls_platform_zeroize( san, sizeof( mbedtls_x509_subject_alternative_name ) );
san->type = MBEDTLS_X509_SAN_DNS_NAME;
memcpy( &san->san.unstructured_name, san_buf, sizeof( *san_buf ) );
}
@ -1785,7 +1779,7 @@ int mbedtls_x509_parse_subject_alt_name( const mbedtls_x509_buf *san_buf,
*/
case( MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_X509_SAN_UNIFORM_RESOURCE_IDENTIFIER ):
{
memset( san, 0, sizeof( mbedtls_x509_subject_alternative_name ) );
mbedtls_platform_zeroize( san, sizeof( mbedtls_x509_subject_alternative_name ) );
san->type = MBEDTLS_X509_SAN_UNIFORM_RESOURCE_IDENTIFIER;
memcpy( &san->san.unstructured_name, san_buf, sizeof( *san_buf ) );
}
@ -1795,7 +1789,7 @@ int mbedtls_x509_parse_subject_alt_name( const mbedtls_x509_buf *san_buf,
*/
case( MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_X509_SAN_RFC822_NAME ):
{
memset( san, 0, sizeof( mbedtls_x509_subject_alternative_name ) );
mbedtls_platform_zeroize( san, sizeof( mbedtls_x509_subject_alternative_name ) );
san->type = MBEDTLS_X509_SAN_RFC822_NAME;
memcpy( &san->san.unstructured_name, san_buf, sizeof( *san_buf ) );
}
@ -1805,7 +1799,7 @@ int mbedtls_x509_parse_subject_alt_name( const mbedtls_x509_buf *san_buf,
*/
case( MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_X509_SAN_IP_ADDRESS ):
{
memset( san, 0, sizeof( mbedtls_x509_subject_alternative_name ) );
mbedtls_platform_zeroize( san, sizeof( mbedtls_x509_subject_alternative_name ) );
san->type = MBEDTLS_X509_SAN_IP_ADDRESS;
san->san.ip = READ32BE(san_buf->p);
}
@ -1833,7 +1827,7 @@ int mbedtls_x509_parse_subject_alt_name( const mbedtls_x509_buf *san_buf,
static int x509_info_cert_type( char **buf, size_t *size,
unsigned char ns_cert_type )
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
int ret = MBEDTLS_ERR_THIS_CORRUPTION;
size_t n = *size;
char *p = *buf;
const char *sep = "";
@ -1857,7 +1851,7 @@ static int x509_info_cert_type( char **buf, size_t *size,
static int x509_info_key_usage( char **buf, size_t *size,
unsigned int key_usage )
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
int ret = MBEDTLS_ERR_THIS_CORRUPTION;
size_t n = *size;
char *p = *buf;
const char *sep = "";
@ -1878,16 +1872,20 @@ static int x509_info_key_usage( char **buf, size_t *size,
static int x509_info_ext_key_usage( char **buf, size_t *size,
const mbedtls_x509_sequence *extended_key_usage )
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
int ret = MBEDTLS_ERR_THIS_CORRUPTION;
const char *desc;
size_t n = *size;
char *p = *buf;
char tmp[48];
const mbedtls_x509_sequence *cur = extended_key_usage;
const char *sep = "";
while( cur )
{
if( mbedtls_oid_get_extended_key_usage( &cur->buf, &desc ) )
desc = "???";
{
mbedtls_oid_get_numeric_string(tmp, sizeof(tmp), &cur->buf);
desc = tmp;
}
ret = mbedtls_snprintf( p, n, "%s%s", sep, desc );
MBEDTLS_X509_SAFE_SNPRINTF;
sep = ", ";
@ -1901,15 +1899,19 @@ static int x509_info_ext_key_usage( char **buf, size_t *size,
static int x509_info_cert_policies( char **buf, size_t *size,
const mbedtls_x509_sequence *certificate_policies )
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
int ret = MBEDTLS_ERR_THIS_CORRUPTION;
const char *desc;
size_t n = *size;
char *p = *buf;
char tmp[48];
const mbedtls_x509_sequence *cur = certificate_policies;
const char *sep = "";
while( cur ) {
if( mbedtls_oid_get_certificate_policies( &cur->buf, &desc ) )
desc = "???";
{
mbedtls_oid_get_numeric_string(tmp, sizeof(tmp), &cur->buf);
desc = tmp;
}
ret = mbedtls_snprintf( p, n, "%s%s", sep, desc );
MBEDTLS_X509_SAFE_SNPRINTF;
sep = ", ";
@ -1938,7 +1940,7 @@ static int x509_info_cert_policies( char **buf, size_t *size,
int mbedtls_x509_crt_info( char *buf, size_t size, const char *prefix,
const mbedtls_x509_crt *crt )
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
int ret = MBEDTLS_ERR_THIS_CORRUPTION;
size_t n;
char *p;
char key_size_str[BEFORE_COLON];
@ -1984,7 +1986,7 @@ int mbedtls_x509_crt_info( char *buf, size_t size, const char *prefix,
MBEDTLS_X509_SAFE_SNPRINTF;
/* Key size */
if( ( ret = mbedtls_x509_key_size_helper( key_size_str, BEFORE_COLON,
mbedtls_pk_get_name( &crt->pk ) ) ) )
mbedtls_pk_get_name( &crt->pk ) ) ) )
{
return ret;
}
@ -2038,7 +2040,7 @@ int mbedtls_x509_crt_info( char *buf, size_t size, const char *prefix,
}
if( crt->ext_types & MBEDTLS_OID_X509_EXT_CERTIFICATE_POLICIES )
{
ret = mbedtls_snprintf( p, n, "\n%scertificate policies : ", prefix );
ret = mbedtls_snprintf( p, n, "\n%scert policies : ", prefix );
MBEDTLS_X509_SAFE_SNPRINTF;
if( ( ret = x509_info_cert_policies( &p, &n,
&crt->certificate_policies ) ) )
@ -2093,7 +2095,7 @@ static const struct x509_crt_verify_string x509_crt_verify_strings[] = {
int mbedtls_x509_crt_verify_info( char *buf, size_t size, const char *prefix,
uint32_t flags )
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
int ret = MBEDTLS_ERR_THIS_CORRUPTION;
const struct x509_crt_verify_string *cur;
char *p = buf;
size_t n = size;
@ -2406,7 +2408,7 @@ static int x509_crt_find_parent_in(
unsigned self_cnt,
mbedtls_x509_crt_restart_ctx *rs_ctx )
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
int ret = MBEDTLS_ERR_THIS_CORRUPTION;
mbedtls_x509_crt *parent, *fallback_parent;
int signature_is_good = 0, fallback_signature_is_good;
#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
@ -2513,7 +2515,7 @@ static int x509_crt_find_parent(
unsigned self_cnt,
mbedtls_x509_crt_restart_ctx *rs_ctx )
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
int ret = MBEDTLS_ERR_THIS_CORRUPTION;
mbedtls_x509_crt *search_list;
*parent_is_trusted = 1;
#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
@ -2634,7 +2636,7 @@ static int x509_crt_verify_chain(
{
/* Don't initialize any of those variables here, so that the compiler can
* catch potential issues with jumping ahead when restarting */
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
int ret = MBEDTLS_ERR_THIS_CORRUPTION;
uint32_t *flags;
mbedtls_x509_crt_verify_chain_item *cur;
mbedtls_x509_crt *child;
@ -2777,7 +2779,7 @@ static int x509_crt_check_cn( const mbedtls_x509_buf *name,
{
/* try exact match */
if( name->len == cn_len &&
x509_memcasecmp( cn, name->p, cn_len ) == 0 )
memcasecmp( cn, name->p, cn_len ) == 0 )
{
return 0;
}
@ -2855,7 +2857,7 @@ static int x509_crt_merge_flags_with_cb(
int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *),
void *p_vrfy )
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
int ret = MBEDTLS_ERR_THIS_CORRUPTION;
unsigned i;
uint32_t cur_flags;
const mbedtls_x509_crt_verify_chain_item *cur;
@ -2899,7 +2901,7 @@ static int x509_crt_verify_restartable_ca_cb( mbedtls_x509_crt *crt,
void *p_vrfy,
mbedtls_x509_crt_restart_ctx *rs_ctx )
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
int ret = MBEDTLS_ERR_THIS_CORRUPTION;
mbedtls_pk_type_t pk_type;
mbedtls_x509_crt_verify_chain ver_chain;
uint32_t ee_flags;
@ -3169,7 +3171,7 @@ int mbedtls_x509_crt_verify_restartable( mbedtls_x509_crt *crt,
*/
void mbedtls_x509_crt_init( mbedtls_x509_crt *crt )
{
memset( crt, 0, sizeof(mbedtls_x509_crt) );
mbedtls_platform_zeroize( crt, sizeof(mbedtls_x509_crt) );
}
/**