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Handle suported_point_formats in ServerHello

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Manuel Pégourié-Gonnard 2013-08-15 18:01:11 +02:00 • committed by Paul Bakker
parent 6b8846d929
commit 7b19c16b74
2 changed files with 79 additions and 1 deletions
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31
library/ssl_srv.c
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@ -553,6 +553,7 @@ static int ssl_parse_supported_point_formats( ssl_context *ssl,
p[0] == POLARSSL_ECP_PF_COMPRESSED )
{
ssl->handshake->ec_point_format = p[0];
SSL_DEBUG_MSG( 4, ( "point format selected: %d", p[0] ) );
return( 0 );
}
@ -1423,6 +1424,31 @@ static void ssl_write_max_fragment_length_ext( ssl_context *ssl,
}
#endif /* POLARSSL_SSL_MAX_FRAGMENT_LENGTH */
#if defined(POLARSSL_ECDH_C)
static void ssl_write_supported_point_formats_ext( ssl_context *ssl,
unsigned char *buf,
size_t *olen )
{
unsigned char *p = buf;
((void) ssl);
*olen = 0;
SSL_DEBUG_MSG( 3, ( "server hello, supported_point_formats extension" ) );
*p++ = (unsigned char)( ( TLS_EXT_SUPPORTED_POINT_FORMATS >> 8 ) & 0xFF );
*p++ = (unsigned char)( ( TLS_EXT_SUPPORTED_POINT_FORMATS ) & 0xFF );
*p++ = 0x00;
*p++ = 2;
*p++ = 1;
*p++ = POLARSSL_ECP_PF_UNCOMPRESSED;
*olen = 6;
}
#endif /* POLARSSL_ECDH_C */
static int ssl_write_server_hello( ssl_context *ssl )
{
#if defined(POLARSSL_HAVE_TIME)
@ -1578,6 +1604,11 @@ static int ssl_write_server_hello( ssl_context *ssl )
ext_len += olen;
#endif
#if defined(POLARSSL_ECDH_C)
ssl_write_supported_point_formats_ext( ssl, p + 2 + ext_len, &olen );
ext_len += olen;
#endif
SSL_DEBUG_MSG( 3, ( "server hello, total extension length: %d", ext_len ) );
*p++ = (unsigned char)( ( ext_len >> 8 ) & 0xFF );