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Fix cookie context usage

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This commit is contained in:
Manuel Pégourié-Gonnard 2014-07-23 17:26:48 +02:00 committed by Paul Bakker
parent 232edd46be
commit e4de06145a
1 changed files with 10 additions and 8 deletions
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18
library/ssl_cookie.c
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@ -106,20 +106,23 @@ int ssl_cookie_setup( ssl_cookie_ctx *ctx,
/*
* Generate cookie for DTLS ClientHello verification
*/
int ssl_cookie_write( void *ctx,
int ssl_cookie_write( void *p_ctx,
unsigned char **p, unsigned char *end,
const unsigned char *cli_id, size_t cli_id_len )
{
int ret;
unsigned char hmac_out[HVR_MD_LEN];
md_context_t *hmac_ctx = (md_context_t *) ctx;
ssl_cookie_ctx *ctx = (ssl_cookie_ctx *) p_ctx;
if( ctx == NULL )
return( POLARSSL_ERR_SSL_BAD_INPUT_DATA );
if( (size_t)( end - *p ) < HVR_MD_USE )
return( POLARSSL_ERR_SSL_BAD_INPUT_DATA );
if( ( ret = md_hmac_reset( hmac_ctx ) ) != 0 ||
( ret = md_hmac_update( hmac_ctx, cli_id, cli_id_len ) ) != 0 ||
( ret = md_hmac_finish( hmac_ctx, hmac_out ) ) != 0 )
if( ( ret = md_hmac_reset( &ctx->hmac_ctx ) ) != 0 ||
( ret = md_hmac_update( &ctx->hmac_ctx, cli_id, cli_id_len ) ) != 0 ||
( ret = md_hmac_finish( &ctx->hmac_ctx, hmac_out ) ) != 0 )
{
return( POLARSSL_ERR_SSL_INTERNAL_ERROR );
}
@ -133,18 +136,17 @@ int ssl_cookie_write( void *ctx,
/*
* Check a cookie
*/
int ssl_cookie_check( void *ctx,
int ssl_cookie_check( void *p_ctx,
const unsigned char *cookie, size_t cookie_len,
const unsigned char *cli_id, size_t cli_id_len )
{
unsigned char ref_cookie[HVR_MD_USE];
unsigned char *p = ref_cookie;
md_context_t *hmac_ctx = (md_context_t *) ctx;
if( cookie_len != HVR_MD_USE )
return( -1 );
if( ssl_cookie_write( hmac_ctx,
if( ssl_cookie_write( p_ctx,
&p, p + sizeof( ref_cookie ),
cli_id, cli_id_len ) != 0 )
return( -1 );