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Diffstat (limited to 'polarssl/src/library/ssl_srv.c')
-rw-r--r--polarssl/src/library/ssl_srv.c1080
1 files changed, 0 insertions, 1080 deletions
diff --git a/polarssl/src/library/ssl_srv.c b/polarssl/src/library/ssl_srv.c
deleted file mode 100644
index ecf1536..0000000
--- a/polarssl/src/library/ssl_srv.c
+++ /dev/null
@@ -1,1080 +0,0 @@
-/*
- * SSLv3/TLSv1 server-side functions
- *
- * Copyright (C) 2006-2012, Brainspark B.V.
- *
- * This file is part of PolarSSL (http://www.polarssl.org)
- * Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
- *
- * All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#include "polarssl/config.h"
-
-#if defined(POLARSSL_SSL_SRV_C)
-
-#include "polarssl/debug.h"
-#include "polarssl/ssl.h"
-
-#if defined(POLARSSL_PKCS11_C)
-#include "polarssl/pkcs11.h"
-#endif /* defined(POLARSSL_PKCS11_C) */
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <time.h>
-
-static int ssl_parse_client_hello( ssl_context *ssl )
-{
- int ret;
- unsigned int i, j;
- size_t n;
- unsigned int ciph_len, sess_len;
- unsigned int chal_len, comp_len;
- unsigned char *buf, *p;
-
- SSL_DEBUG_MSG( 2, ( "=> parse client hello" ) );
-
- if( ( ret = ssl_fetch_input( ssl, 5 ) ) != 0 )
- {
- SSL_DEBUG_RET( 1, "ssl_fetch_input", ret );
- return( ret );
- }
-
- buf = ssl->in_hdr;
-
- if( ( buf[0] & 0x80 ) != 0 )
- {
- SSL_DEBUG_BUF( 4, "record header", buf, 5 );
-
- SSL_DEBUG_MSG( 3, ( "client hello v2, message type: %d",
- buf[2] ) );
- SSL_DEBUG_MSG( 3, ( "client hello v2, message len.: %d",
- ( ( buf[0] & 0x7F ) << 8 ) | buf[1] ) );
- SSL_DEBUG_MSG( 3, ( "client hello v2, max. version: [%d:%d]",
- buf[3], buf[4] ) );
-
- /*
- * SSLv2 Client Hello
- *
- * Record layer:
- * 0 . 1 message length
- *
- * SSL layer:
- * 2 . 2 message type
- * 3 . 4 protocol version
- */
- if( buf[2] != SSL_HS_CLIENT_HELLO ||
- buf[3] != SSL_MAJOR_VERSION_3 )
- {
- SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
- return( POLARSSL_ERR_SSL_BAD_HS_CLIENT_HELLO );
- }
-
- n = ( ( buf[0] << 8 ) | buf[1] ) & 0x7FFF;
-
- if( n < 17 || n > 512 )
- {
- SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
- return( POLARSSL_ERR_SSL_BAD_HS_CLIENT_HELLO );
- }
-
- ssl->max_major_ver = buf[3];
- ssl->max_minor_ver = buf[4];
-
- ssl->major_ver = SSL_MAJOR_VERSION_3;
- ssl->minor_ver = ( buf[4] <= SSL_MINOR_VERSION_3 )
- ? buf[4] : SSL_MINOR_VERSION_3;
-
- if( ( ret = ssl_fetch_input( ssl, 2 + n ) ) != 0 )
- {
- SSL_DEBUG_RET( 1, "ssl_fetch_input", ret );
- return( ret );
- }
-
- ssl->update_checksum( ssl, buf + 2, n );
-
- buf = ssl->in_msg;
- n = ssl->in_left - 5;
-
- /*
- * 0 . 1 ciphersuitelist length
- * 2 . 3 session id length
- * 4 . 5 challenge length
- * 6 . .. ciphersuitelist
- * .. . .. session id
- * .. . .. challenge
- */
- SSL_DEBUG_BUF( 4, "record contents", buf, n );
-
- ciph_len = ( buf[0] << 8 ) | buf[1];
- sess_len = ( buf[2] << 8 ) | buf[3];
- chal_len = ( buf[4] << 8 ) | buf[5];
-
- SSL_DEBUG_MSG( 3, ( "ciph_len: %d, sess_len: %d, chal_len: %d",
- ciph_len, sess_len, chal_len ) );
-
- /*
- * Make sure each parameter length is valid
- */
- if( ciph_len < 3 || ( ciph_len % 3 ) != 0 )
- {
- SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
- return( POLARSSL_ERR_SSL_BAD_HS_CLIENT_HELLO );
- }
-
- if( sess_len > 32 )
- {
- SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
- return( POLARSSL_ERR_SSL_BAD_HS_CLIENT_HELLO );
- }
-
- if( chal_len < 8 || chal_len > 32 )
- {
- SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
- return( POLARSSL_ERR_SSL_BAD_HS_CLIENT_HELLO );
- }
-
- if( n != 6 + ciph_len + sess_len + chal_len )
- {
- SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
- return( POLARSSL_ERR_SSL_BAD_HS_CLIENT_HELLO );
- }
-
- SSL_DEBUG_BUF( 3, "client hello, ciphersuitelist",
- buf + 6, ciph_len );
- SSL_DEBUG_BUF( 3, "client hello, session id",
- buf + 6 + ciph_len, sess_len );
- SSL_DEBUG_BUF( 3, "client hello, challenge",
- buf + 6 + ciph_len + sess_len, chal_len );
-
- p = buf + 6 + ciph_len;
- ssl->session->length = sess_len;
- memset( ssl->session->id, 0, sizeof( ssl->session->id ) );
- memcpy( ssl->session->id, p, ssl->session->length );
-
- p += sess_len;
- memset( ssl->randbytes, 0, 64 );
- memcpy( ssl->randbytes + 32 - chal_len, p, chal_len );
-
- for( i = 0; ssl->ciphersuites[i] != 0; i++ )
- {
- for( j = 0, p = buf + 6; j < ciph_len; j += 3, p += 3 )
- {
- if( p[0] == 0 &&
- p[1] == 0 &&
- p[2] == ssl->ciphersuites[i] )
- goto have_ciphersuite;
- }
- }
- }
- else
- {
- SSL_DEBUG_BUF( 4, "record header", buf, 5 );
-
- SSL_DEBUG_MSG( 3, ( "client hello v3, message type: %d",
- buf[0] ) );
- SSL_DEBUG_MSG( 3, ( "client hello v3, message len.: %d",
- ( buf[3] << 8 ) | buf[4] ) );
- SSL_DEBUG_MSG( 3, ( "client hello v3, protocol ver: [%d:%d]",
- buf[1], buf[2] ) );
-
- /*
- * SSLv3 Client Hello
- *
- * Record layer:
- * 0 . 0 message type
- * 1 . 2 protocol version
- * 3 . 4 message length
- */
- if( buf[0] != SSL_MSG_HANDSHAKE ||
- buf[1] != SSL_MAJOR_VERSION_3 )
- {
- SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
- return( POLARSSL_ERR_SSL_BAD_HS_CLIENT_HELLO );
- }
-
- n = ( buf[3] << 8 ) | buf[4];
-
- if( n < 45 || n > 512 )
- {
- SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
- return( POLARSSL_ERR_SSL_BAD_HS_CLIENT_HELLO );
- }
-
- if( ( ret = ssl_fetch_input( ssl, 5 + n ) ) != 0 )
- {
- SSL_DEBUG_RET( 1, "ssl_fetch_input", ret );
- return( ret );
- }
-
- buf = ssl->in_msg;
- n = ssl->in_left - 5;
-
- ssl->update_checksum( ssl, buf, n );
-
- /*
- * SSL layer:
- * 0 . 0 handshake type
- * 1 . 3 handshake length
- * 4 . 5 protocol version
- * 6 . 9 UNIX time()
- * 10 . 37 random bytes
- * 38 . 38 session id length
- * 39 . 38+x session id
- * 39+x . 40+x ciphersuitelist length
- * 41+x . .. ciphersuitelist
- * .. . .. compression alg.
- * .. . .. extensions
- */
- SSL_DEBUG_BUF( 4, "record contents", buf, n );
-
- SSL_DEBUG_MSG( 3, ( "client hello v3, handshake type: %d",
- buf[0] ) );
- SSL_DEBUG_MSG( 3, ( "client hello v3, handshake len.: %d",
- ( buf[1] << 16 ) | ( buf[2] << 8 ) | buf[3] ) );
- SSL_DEBUG_MSG( 3, ( "client hello v3, max. version: [%d:%d]",
- buf[4], buf[5] ) );
-
- /*
- * Check the handshake type and protocol version
- */
- if( buf[0] != SSL_HS_CLIENT_HELLO ||
- buf[4] != SSL_MAJOR_VERSION_3 )
- {
- SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
- return( POLARSSL_ERR_SSL_BAD_HS_CLIENT_HELLO );
- }
-
- ssl->major_ver = SSL_MAJOR_VERSION_3;
- ssl->minor_ver = ( buf[5] <= SSL_MINOR_VERSION_3 )
- ? buf[5] : SSL_MINOR_VERSION_3;
-
- ssl->max_major_ver = buf[4];
- ssl->max_minor_ver = buf[5];
-
- memcpy( ssl->randbytes, buf + 6, 32 );
-
- /*
- * Check the handshake message length
- */
- if( buf[1] != 0 || n != (unsigned int) 4 + ( ( buf[2] << 8 ) | buf[3] ) )
- {
- SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
- return( POLARSSL_ERR_SSL_BAD_HS_CLIENT_HELLO );
- }
-
- /*
- * Check the session length
- */
- sess_len = buf[38];
-
- if( sess_len > 32 )
- {
- SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
- return( POLARSSL_ERR_SSL_BAD_HS_CLIENT_HELLO );
- }
-
- ssl->session->length = sess_len;
- memset( ssl->session->id, 0, sizeof( ssl->session->id ) );
- memcpy( ssl->session->id, buf + 39 , ssl->session->length );
-
- /*
- * Check the ciphersuitelist length
- */
- ciph_len = ( buf[39 + sess_len] << 8 )
- | ( buf[40 + sess_len] );
-
- if( ciph_len < 2 || ciph_len > 256 || ( ciph_len % 2 ) != 0 )
- {
- SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
- return( POLARSSL_ERR_SSL_BAD_HS_CLIENT_HELLO );
- }
-
- /*
- * Check the compression algorithms length
- */
- comp_len = buf[41 + sess_len + ciph_len];
-
- if( comp_len < 1 || comp_len > 16 )
- {
- SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
- return( POLARSSL_ERR_SSL_BAD_HS_CLIENT_HELLO );
- }
-
- SSL_DEBUG_BUF( 3, "client hello, random bytes",
- buf + 6, 32 );
- SSL_DEBUG_BUF( 3, "client hello, session id",
- buf + 38, sess_len );
- SSL_DEBUG_BUF( 3, "client hello, ciphersuitelist",
- buf + 41 + sess_len, ciph_len );
- SSL_DEBUG_BUF( 3, "client hello, compression",
- buf + 42 + sess_len + ciph_len, comp_len );
-
- /*
- * Search for a matching ciphersuite
- */
- for( i = 0; ssl->ciphersuites[i] != 0; i++ )
- {
- for( j = 0, p = buf + 41 + sess_len; j < ciph_len;
- j += 2, p += 2 )
- {
- if( p[0] == 0 && p[1] == ssl->ciphersuites[i] )
- goto have_ciphersuite;
- }
- }
- }
-
- SSL_DEBUG_MSG( 1, ( "got no ciphersuites in common" ) );
-
- return( POLARSSL_ERR_SSL_NO_CIPHER_CHOSEN );
-
-have_ciphersuite:
-
- ssl->session->ciphersuite = ssl->ciphersuites[i];
- ssl_kickstart_checksum( ssl, ssl->session->ciphersuite, buf, n );
-
- ssl->in_left = 0;
- ssl->state++;
-
- SSL_DEBUG_MSG( 2, ( "<= parse client hello" ) );
-
- return( 0 );
-}
-
-static int ssl_write_server_hello( ssl_context *ssl )
-{
- time_t t;
- int ret, n;
- unsigned char *buf, *p;
-
- SSL_DEBUG_MSG( 2, ( "=> write server hello" ) );
-
- /*
- * 0 . 0 handshake type
- * 1 . 3 handshake length
- * 4 . 5 protocol version
- * 6 . 9 UNIX time()
- * 10 . 37 random bytes
- */
- buf = ssl->out_msg;
- p = buf + 4;
-
- *p++ = (unsigned char) ssl->major_ver;
- *p++ = (unsigned char) ssl->minor_ver;
-
- SSL_DEBUG_MSG( 3, ( "server hello, chosen version: [%d:%d]",
- buf[4], buf[5] ) );
-
- t = time( NULL );
- *p++ = (unsigned char)( t >> 24 );
- *p++ = (unsigned char)( t >> 16 );
- *p++ = (unsigned char)( t >> 8 );
- *p++ = (unsigned char)( t );
-
- SSL_DEBUG_MSG( 3, ( "server hello, current time: %lu", t ) );
-
- if( ( ret = ssl->f_rng( ssl->p_rng, p, 28 ) ) != 0 )
- return( ret );
-
- p += 28;
-
- memcpy( ssl->randbytes + 32, buf + 6, 32 );
-
- SSL_DEBUG_BUF( 3, "server hello, random bytes", buf + 6, 32 );
-
- /*
- * 38 . 38 session id length
- * 39 . 38+n session id
- * 39+n . 40+n chosen ciphersuite
- * 41+n . 41+n chosen compression alg.
- */
- ssl->session->length = n = 32;
- *p++ = (unsigned char) ssl->session->length;
-
- if( ssl->s_get == NULL ||
- ssl->s_get( ssl ) != 0 )
- {
- /*
- * Not found, create a new session id
- */
- ssl->resume = 0;
- ssl->state++;
-
- if( ssl->session == NULL )
- {
- SSL_DEBUG_MSG( 1, ( "No session struct set" ) );
- return( POLARSSL_ERR_SSL_BAD_INPUT_DATA );
- }
-
- if( ( ret = ssl->f_rng( ssl->p_rng, ssl->session->id, n ) ) != 0 )
- return( ret );
- }
- else
- {
- /*
- * Found a matching session, resume it
- */
- ssl->resume = 1;
- ssl->state = SSL_SERVER_CHANGE_CIPHER_SPEC;
-
- if( ( ret = ssl_derive_keys( ssl ) ) != 0 )
- {
- SSL_DEBUG_RET( 1, "ssl_derive_keys", ret );
- return( ret );
- }
- }
-
- memcpy( p, ssl->session->id, ssl->session->length );
- p += ssl->session->length;
-
- SSL_DEBUG_MSG( 3, ( "server hello, session id len.: %d", n ) );
- SSL_DEBUG_BUF( 3, "server hello, session id", buf + 39, n );
- SSL_DEBUG_MSG( 3, ( "%s session has been resumed",
- ssl->resume ? "a" : "no" ) );
-
- *p++ = (unsigned char)( ssl->session->ciphersuite >> 8 );
- *p++ = (unsigned char)( ssl->session->ciphersuite );
- *p++ = SSL_COMPRESS_NULL;
-
- SSL_DEBUG_MSG( 3, ( "server hello, chosen ciphersuite: %d",
- ssl->session->ciphersuite ) );
- SSL_DEBUG_MSG( 3, ( "server hello, compress alg.: %d", 0 ) );
-
- ssl->out_msglen = p - buf;
- ssl->out_msgtype = SSL_MSG_HANDSHAKE;
- ssl->out_msg[0] = SSL_HS_SERVER_HELLO;
-
- ret = ssl_write_record( ssl );
-
- SSL_DEBUG_MSG( 2, ( "<= write server hello" ) );
-
- return( ret );
-}
-
-static int ssl_write_certificate_request( ssl_context *ssl )
-{
- int ret;
- size_t n;
- unsigned char *buf, *p;
- const x509_cert *crt;
-
- SSL_DEBUG_MSG( 2, ( "=> write certificate request" ) );
-
- ssl->state++;
-
- if( ssl->authmode == SSL_VERIFY_NONE )
- {
- SSL_DEBUG_MSG( 2, ( "<= skip write certificate request" ) );
- return( 0 );
- }
-
- /*
- * 0 . 0 handshake type
- * 1 . 3 handshake length
- * 4 . 4 cert type count
- * 5 .. n-1 cert types
- * n .. n+1 length of all DNs
- * n+2 .. n+3 length of DN 1
- * n+4 .. ... Distinguished Name #1
- * ... .. ... length of DN 2, etc.
- */
- buf = ssl->out_msg;
- p = buf + 4;
-
- /*
- * At the moment, only RSA certificates are supported
- */
- *p++ = 1;
- *p++ = 1;
-
- p += 2;
- crt = ssl->ca_chain;
-
- while( crt != NULL )
- {
- if( p - buf > 4096 )
- break;
-
- n = crt->subject_raw.len;
- *p++ = (unsigned char)( n >> 8 );
- *p++ = (unsigned char)( n );
- memcpy( p, crt->subject_raw.p, n );
-
- SSL_DEBUG_BUF( 3, "requested DN", p, n );
- p += n; crt = crt->next;
- }
-
- ssl->out_msglen = n = p - buf;
- ssl->out_msgtype = SSL_MSG_HANDSHAKE;
- ssl->out_msg[0] = SSL_HS_CERTIFICATE_REQUEST;
- ssl->out_msg[6] = (unsigned char)( ( n - 8 ) >> 8 );
- ssl->out_msg[7] = (unsigned char)( ( n - 8 ) );
-
- ret = ssl_write_record( ssl );
-
- SSL_DEBUG_MSG( 2, ( "<= write certificate request" ) );
-
- return( ret );
-}
-
-static int ssl_write_server_key_exchange( ssl_context *ssl )
-{
-#if defined(POLARSSL_DHM_C)
- int ret;
- size_t n, rsa_key_len = 0;
- unsigned char hash[48];
- md5_context md5;
- sha1_context sha1;
- int hash_id;
- unsigned int hashlen;
-#endif
-
- SSL_DEBUG_MSG( 2, ( "=> write server key exchange" ) );
-
- if( ssl->session->ciphersuite != SSL_EDH_RSA_DES_SHA &&
- ssl->session->ciphersuite != SSL_EDH_RSA_DES_168_SHA &&
- ssl->session->ciphersuite != SSL_EDH_RSA_AES_128_SHA &&
- ssl->session->ciphersuite != SSL_EDH_RSA_AES_256_SHA &&
- ssl->session->ciphersuite != SSL_EDH_RSA_AES_128_SHA256 &&
- ssl->session->ciphersuite != SSL_EDH_RSA_AES_256_SHA256 &&
- ssl->session->ciphersuite != SSL_EDH_RSA_CAMELLIA_128_SHA &&
- ssl->session->ciphersuite != SSL_EDH_RSA_CAMELLIA_256_SHA &&
- ssl->session->ciphersuite != SSL_EDH_RSA_CAMELLIA_128_SHA256 &&
- ssl->session->ciphersuite != SSL_EDH_RSA_CAMELLIA_256_SHA256 &&
- ssl->session->ciphersuite != SSL_EDH_RSA_AES_128_GCM_SHA256 &&
- ssl->session->ciphersuite != SSL_EDH_RSA_AES_256_GCM_SHA384 )
- {
- SSL_DEBUG_MSG( 2, ( "<= skip write server key exchange" ) );
- ssl->state++;
- return( 0 );
- }
-
-#if !defined(POLARSSL_DHM_C)
- SSL_DEBUG_MSG( 1, ( "support for dhm is not available" ) );
- return( POLARSSL_ERR_SSL_FEATURE_UNAVAILABLE );
-#else
-
- if( ssl->rsa_key == NULL )
- {
-#if defined(POLARSSL_PKCS11_C)
- if( ssl->pkcs11_key == NULL )
- {
-#endif /* defined(POLARSSL_PKCS11_C) */
- SSL_DEBUG_MSG( 1, ( "got no private key" ) );
- return( POLARSSL_ERR_SSL_PRIVATE_KEY_REQUIRED );
-#if defined(POLARSSL_PKCS11_C)
- }
-#endif /* defined(POLARSSL_PKCS11_C) */
- }
-
- /*
- * Ephemeral DH parameters:
- *
- * struct {
- * opaque dh_p<1..2^16-1>;
- * opaque dh_g<1..2^16-1>;
- * opaque dh_Ys<1..2^16-1>;
- * } ServerDHParams;
- */
- if( ( ret = dhm_make_params( &ssl->dhm_ctx, 256, ssl->out_msg + 4,
- &n, ssl->f_rng, ssl->p_rng ) ) != 0 )
- {
- SSL_DEBUG_RET( 1, "dhm_make_params", ret );
- return( ret );
- }
-
- SSL_DEBUG_MPI( 3, "DHM: X ", &ssl->dhm_ctx.X );
- SSL_DEBUG_MPI( 3, "DHM: P ", &ssl->dhm_ctx.P );
- SSL_DEBUG_MPI( 3, "DHM: G ", &ssl->dhm_ctx.G );
- SSL_DEBUG_MPI( 3, "DHM: GX", &ssl->dhm_ctx.GX );
-
- if( ssl->minor_ver != SSL_MINOR_VERSION_3 )
- {
- /*
- * digitally-signed struct {
- * opaque md5_hash[16];
- * opaque sha_hash[20];
- * };
- *
- * md5_hash
- * MD5(ClientHello.random + ServerHello.random
- * + ServerParams);
- * sha_hash
- * SHA(ClientHello.random + ServerHello.random
- * + ServerParams);
- */
- md5_starts( &md5 );
- md5_update( &md5, ssl->randbytes, 64 );
- md5_update( &md5, ssl->out_msg + 4, n );
- md5_finish( &md5, hash );
-
- sha1_starts( &sha1 );
- sha1_update( &sha1, ssl->randbytes, 64 );
- sha1_update( &sha1, ssl->out_msg + 4, n );
- sha1_finish( &sha1, hash + 16 );
-
- hashlen = 36;
- hash_id = SIG_RSA_RAW;
- }
- else
- {
- /*
- * digitally-signed struct {
- * opaque client_random[32];
- * opaque server_random[32];
- * ServerDHParams params;
- * };
- */
- /* TODO TLS1.2 Get a supported hash algorithm from the
- * signature_algorithms extension, Otherwise SHA1 + RSA!
- */
-
- sha1_starts( &sha1 );
- sha1_update( &sha1, ssl->randbytes, 64 );
- sha1_update( &sha1, ssl->out_msg + 4, n );
- sha1_finish( &sha1, hash );
-
- hashlen = 20;
- hash_id = SIG_RSA_SHA1;
- }
-
- SSL_DEBUG_BUF( 3, "parameters hash", hash, hashlen );
-
- if ( ssl->rsa_key )
- rsa_key_len = ssl->rsa_key->len;
-#if defined(POLARSSL_PKCS11_C)
- else
- rsa_key_len = ssl->pkcs11_key->len;
-#endif /* defined(POLARSSL_PKCS11_C) */
-
- if( ssl->minor_ver == SSL_MINOR_VERSION_3 )
- {
- // TODO TLS1.2 Base on selection above (SHA1 + RSA is default choice)
- ssl->out_msg[4 + n] = SSL_HASH_SHA1;
- ssl->out_msg[5 + n] = SSL_SIG_RSA;
-
- n += 2;
- }
-
- ssl->out_msg[4 + n] = (unsigned char)( rsa_key_len >> 8 );
- ssl->out_msg[5 + n] = (unsigned char)( rsa_key_len );
-
- if ( ssl->rsa_key )
- {
- ret = rsa_pkcs1_sign( ssl->rsa_key, ssl->f_rng, ssl->p_rng,
- RSA_PRIVATE,
- hash_id, hashlen, hash, ssl->out_msg + 6 + n );
- }
-#if defined(POLARSSL_PKCS11_C)
- else {
- ret = pkcs11_sign( ssl->pkcs11_key, RSA_PRIVATE,
- hash_id, hashlen, hash, ssl->out_msg + 6 + n );
- }
-#endif /* defined(POLARSSL_PKCS11_C) */
-
- if( ret != 0 )
- {
- SSL_DEBUG_RET( 1, "pkcs1_sign", ret );
- return( ret );
- }
-
- SSL_DEBUG_BUF( 3, "my RSA sig", ssl->out_msg + 6 + n, rsa_key_len );
-
- ssl->out_msglen = 6 + n + rsa_key_len;
- ssl->out_msgtype = SSL_MSG_HANDSHAKE;
- ssl->out_msg[0] = SSL_HS_SERVER_KEY_EXCHANGE;
-
- ssl->state++;
-
- if( ( ret = ssl_write_record( ssl ) ) != 0 )
- {
- SSL_DEBUG_RET( 1, "ssl_write_record", ret );
- return( ret );
- }
-
- SSL_DEBUG_MSG( 2, ( "<= write server key exchange" ) );
-
- return( 0 );
-#endif
-}
-
-static int ssl_write_server_hello_done( ssl_context *ssl )
-{
- int ret;
-
- SSL_DEBUG_MSG( 2, ( "=> write server hello done" ) );
-
- ssl->out_msglen = 4;
- ssl->out_msgtype = SSL_MSG_HANDSHAKE;
- ssl->out_msg[0] = SSL_HS_SERVER_HELLO_DONE;
-
- ssl->state++;
-
- if( ( ret = ssl_write_record( ssl ) ) != 0 )
- {
- SSL_DEBUG_RET( 1, "ssl_write_record", ret );
- return( ret );
- }
-
- SSL_DEBUG_MSG( 2, ( "<= write server hello done" ) );
-
- return( 0 );
-}
-
-static int ssl_parse_client_key_exchange( ssl_context *ssl )
-{
- int ret;
- size_t i, n = 0;
-
- SSL_DEBUG_MSG( 2, ( "=> parse client key exchange" ) );
-
- if( ( ret = ssl_read_record( ssl ) ) != 0 )
- {
- SSL_DEBUG_RET( 1, "ssl_read_record", ret );
- return( ret );
- }
-
- if( ssl->in_msgtype != SSL_MSG_HANDSHAKE )
- {
- SSL_DEBUG_MSG( 1, ( "bad client key exchange message" ) );
- return( POLARSSL_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE );
- }
-
- if( ssl->in_msg[0] != SSL_HS_CLIENT_KEY_EXCHANGE )
- {
- SSL_DEBUG_MSG( 1, ( "bad client key exchange message" ) );
- return( POLARSSL_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE );
- }
-
- if( ssl->session->ciphersuite == SSL_EDH_RSA_DES_SHA ||
- ssl->session->ciphersuite == SSL_EDH_RSA_DES_168_SHA ||
- ssl->session->ciphersuite == SSL_EDH_RSA_AES_128_SHA ||
- ssl->session->ciphersuite == SSL_EDH_RSA_AES_256_SHA ||
- ssl->session->ciphersuite == SSL_EDH_RSA_AES_128_SHA256 ||
- ssl->session->ciphersuite == SSL_EDH_RSA_AES_256_SHA256 ||
- ssl->session->ciphersuite == SSL_EDH_RSA_CAMELLIA_128_SHA ||
- ssl->session->ciphersuite == SSL_EDH_RSA_CAMELLIA_256_SHA ||
- ssl->session->ciphersuite == SSL_EDH_RSA_CAMELLIA_128_SHA256 ||
- ssl->session->ciphersuite == SSL_EDH_RSA_CAMELLIA_256_SHA256 ||
- ssl->session->ciphersuite == SSL_EDH_RSA_AES_128_GCM_SHA256 ||
- ssl->session->ciphersuite == SSL_EDH_RSA_AES_256_GCM_SHA384 )
- {
-#if !defined(POLARSSL_DHM_C)
- SSL_DEBUG_MSG( 1, ( "support for dhm is not available" ) );
- return( POLARSSL_ERR_SSL_FEATURE_UNAVAILABLE );
-#else
- /*
- * Receive G^Y mod P, premaster = (G^Y)^X mod P
- */
- n = ( ssl->in_msg[4] << 8 ) | ssl->in_msg[5];
-
- if( n < 1 || n > ssl->dhm_ctx.len ||
- n + 6 != ssl->in_hslen )
- {
- SSL_DEBUG_MSG( 1, ( "bad client key exchange message" ) );
- return( POLARSSL_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE );
- }
-
- if( ( ret = dhm_read_public( &ssl->dhm_ctx,
- ssl->in_msg + 6, n ) ) != 0 )
- {
- SSL_DEBUG_RET( 1, "dhm_read_public", ret );
- return( POLARSSL_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE_DHM_RP );
- }
-
- SSL_DEBUG_MPI( 3, "DHM: GY", &ssl->dhm_ctx.GY );
-
- ssl->pmslen = ssl->dhm_ctx.len;
-
- if( ( ret = dhm_calc_secret( &ssl->dhm_ctx,
- ssl->premaster, &ssl->pmslen ) ) != 0 )
- {
- SSL_DEBUG_RET( 1, "dhm_calc_secret", ret );
- return( POLARSSL_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE_DHM_CS );
- }
-
- SSL_DEBUG_MPI( 3, "DHM: K ", &ssl->dhm_ctx.K );
-#endif
- }
- else
- {
- if( ssl->rsa_key == NULL )
- {
-#if defined(POLARSSL_PKCS11_C)
- if( ssl->pkcs11_key == NULL )
- {
-#endif
- SSL_DEBUG_MSG( 1, ( "got no private key" ) );
- return( POLARSSL_ERR_SSL_PRIVATE_KEY_REQUIRED );
-#if defined(POLARSSL_PKCS11_C)
- }
-#endif
- }
-
- /*
- * Decrypt the premaster using own private RSA key
- */
- i = 4;
- if( ssl->rsa_key )
- n = ssl->rsa_key->len;
-#if defined(POLARSSL_PKCS11_C)
- else
- n = ssl->pkcs11_key->len;
-#endif
- ssl->pmslen = 48;
-
- if( ssl->minor_ver != SSL_MINOR_VERSION_0 )
- {
- i += 2;
- if( ssl->in_msg[4] != ( ( n >> 8 ) & 0xFF ) ||
- ssl->in_msg[5] != ( ( n ) & 0xFF ) )
- {
- SSL_DEBUG_MSG( 1, ( "bad client key exchange message" ) );
- return( POLARSSL_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE );
- }
- }
-
- if( ssl->in_hslen != i + n )
- {
- SSL_DEBUG_MSG( 1, ( "bad client key exchange message" ) );
- return( POLARSSL_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE );
- }
-
- if( ssl->rsa_key ) {
- ret = rsa_pkcs1_decrypt( ssl->rsa_key, RSA_PRIVATE, &ssl->pmslen,
- ssl->in_msg + i, ssl->premaster,
- sizeof(ssl->premaster) );
- }
-#if defined(POLARSSL_PKCS11_C)
- else {
- ret = pkcs11_decrypt( ssl->pkcs11_key, RSA_PRIVATE, &ssl->pmslen,
- ssl->in_msg + i, ssl->premaster,
- sizeof(ssl->premaster) );
- }
-#endif /* defined(POLARSSL_PKCS11_C) */
-
- if( ret != 0 || ssl->pmslen != 48 ||
- ssl->premaster[0] != ssl->max_major_ver ||
- ssl->premaster[1] != ssl->max_minor_ver )
- {
- SSL_DEBUG_MSG( 1, ( "bad client key exchange message" ) );
-
- /*
- * Protection against Bleichenbacher's attack:
- * invalid PKCS#1 v1.5 padding must not cause
- * the connection to end immediately; instead,
- * send a bad_record_mac later in the handshake.
- */
- ssl->pmslen = 48;
-
- ret = ssl->f_rng( ssl->p_rng, ssl->premaster, ssl->pmslen );
- if( ret != 0 )
- return( ret );
- }
- }
-
- if( ( ret = ssl_derive_keys( ssl ) ) != 0 )
- {
- SSL_DEBUG_RET( 1, "ssl_derive_keys", ret );
- return( ret );
- }
-
- if( ssl->s_set != NULL )
- ssl->s_set( ssl );
-
- ssl->state++;
-
- SSL_DEBUG_MSG( 2, ( "<= parse client key exchange" ) );
-
- return( 0 );
-}
-
-static int ssl_parse_certificate_verify( ssl_context *ssl )
-{
- int ret;
- size_t n1, n2;
- unsigned char hash[48];
-
- SSL_DEBUG_MSG( 2, ( "=> parse certificate verify" ) );
-
- if( ssl->peer_cert == NULL )
- {
- SSL_DEBUG_MSG( 2, ( "<= skip parse certificate verify" ) );
- ssl->state++;
- return( 0 );
- }
-
- ssl->calc_verify( ssl, hash );
-
- if( ( ret = ssl_read_record( ssl ) ) != 0 )
- {
- SSL_DEBUG_RET( 1, "ssl_read_record", ret );
- return( ret );
- }
-
- ssl->state++;
-
- if( ssl->in_msgtype != SSL_MSG_HANDSHAKE )
- {
- SSL_DEBUG_MSG( 1, ( "bad certificate verify message" ) );
- return( POLARSSL_ERR_SSL_BAD_HS_CERTIFICATE_VERIFY );
- }
-
- if( ssl->in_msg[0] != SSL_HS_CERTIFICATE_VERIFY )
- {
- SSL_DEBUG_MSG( 1, ( "bad certificate verify message" ) );
- return( POLARSSL_ERR_SSL_BAD_HS_CERTIFICATE_VERIFY );
- }
-
- n1 = ssl->peer_cert->rsa.len;
- n2 = ( ssl->in_msg[4] << 8 ) | ssl->in_msg[5];
-
- if( n1 + 6 != ssl->in_hslen || n1 != n2 )
- {
- SSL_DEBUG_MSG( 1, ( "bad certificate verify message" ) );
- return( POLARSSL_ERR_SSL_BAD_HS_CERTIFICATE_VERIFY );
- }
-
- ret = rsa_pkcs1_verify( &ssl->peer_cert->rsa, RSA_PUBLIC,
- SIG_RSA_RAW, 36, hash, ssl->in_msg + 6 );
- if( ret != 0 )
- {
- SSL_DEBUG_RET( 1, "rsa_pkcs1_verify", ret );
- return( ret );
- }
-
- SSL_DEBUG_MSG( 2, ( "<= parse certificate verify" ) );
-
- return( 0 );
-}
-
-/*
- * SSL handshake -- server side
- */
-int ssl_handshake_server( ssl_context *ssl )
-{
- int ret = 0;
-
- SSL_DEBUG_MSG( 2, ( "=> handshake server" ) );
-
- while( ssl->state != SSL_HANDSHAKE_OVER )
- {
- SSL_DEBUG_MSG( 2, ( "server state: %d", ssl->state ) );
-
- if( ( ret = ssl_flush_output( ssl ) ) != 0 )
- break;
-
- switch( ssl->state )
- {
- case SSL_HELLO_REQUEST:
- ssl->state = SSL_CLIENT_HELLO;
- break;
-
- /*
- * <== ClientHello
- */
- case SSL_CLIENT_HELLO:
- ret = ssl_parse_client_hello( ssl );
- break;
-
- /*
- * ==> ServerHello
- * Certificate
- * ( ServerKeyExchange )
- * ( CertificateRequest )
- * ServerHelloDone
- */
- case SSL_SERVER_HELLO:
- ret = ssl_write_server_hello( ssl );
- break;
-
- case SSL_SERVER_CERTIFICATE:
- ret = ssl_write_certificate( ssl );
- break;
-
- case SSL_SERVER_KEY_EXCHANGE:
- ret = ssl_write_server_key_exchange( ssl );
- break;
-
- case SSL_CERTIFICATE_REQUEST:
- ret = ssl_write_certificate_request( ssl );
- break;
-
- case SSL_SERVER_HELLO_DONE:
- ret = ssl_write_server_hello_done( ssl );
- break;
-
- /*
- * <== ( Certificate/Alert )
- * ClientKeyExchange
- * ( CertificateVerify )
- * ChangeCipherSpec
- * Finished
- */
- case SSL_CLIENT_CERTIFICATE:
- ret = ssl_parse_certificate( ssl );
- break;
-
- case SSL_CLIENT_KEY_EXCHANGE:
- ret = ssl_parse_client_key_exchange( ssl );
- break;
-
- case SSL_CERTIFICATE_VERIFY:
- ret = ssl_parse_certificate_verify( ssl );
- break;
-
- case SSL_CLIENT_CHANGE_CIPHER_SPEC:
- ret = ssl_parse_change_cipher_spec( ssl );
- break;
-
- case SSL_CLIENT_FINISHED:
- ret = ssl_parse_finished( ssl );
- break;
-
- /*
- * ==> ChangeCipherSpec
- * Finished
- */
- case SSL_SERVER_CHANGE_CIPHER_SPEC:
- ret = ssl_write_change_cipher_spec( ssl );
- break;
-
- case SSL_SERVER_FINISHED:
- ret = ssl_write_finished( ssl );
- break;
-
- case SSL_FLUSH_BUFFERS:
- SSL_DEBUG_MSG( 2, ( "handshake: done" ) );
- ssl->state = SSL_HANDSHAKE_OVER;
- break;
-
- default:
- SSL_DEBUG_MSG( 1, ( "invalid state %d", ssl->state ) );
- return( POLARSSL_ERR_SSL_BAD_INPUT_DATA );
- }
-
- if( ret != 0 )
- break;
- }
-
- SSL_DEBUG_MSG( 2, ( "<= handshake server" ) );
-
- return( ret );
-}
-
-#endif