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Better length checking in ecp_point_read_binary()

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This commit is contained in:
Manuel Pégourié-Gonnard
2014-07-08 13:09:24 +02:00
parent 4e3e7c2944
commit 67dbe1ef44
1 changed files with 4 additions and 1 deletions
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5
library/ecp.c
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@@ -492,6 +492,9 @@ int ecp_point_read_binary( const ecp_group *grp, ecp_point *pt,
int ret; int ret;
size_t plen; size_t plen;
if ( ilen < 1 )
return( POLARSSL_ERR_ECP_BAD_INPUT_DATA );
if( buf[0] == 0x00 ) if( buf[0] == 0x00 )
{ {
if( ilen == 1 ) if( ilen == 1 )
@@ -529,7 +532,7 @@ int ecp_tls_read_point( const ecp_group *grp, ecp_point *pt,
const unsigned char *buf_start; const unsigned char *buf_start;
/* /*
* We must have at least two bytes (1 for length, at least of for data) * We must have at least two bytes (1 for length, at least one for data)
*/ */
if( buf_len < 2 ) if( buf_len < 2 )
return( POLARSSL_ERR_ECP_BAD_INPUT_DATA ); return( POLARSSL_ERR_ECP_BAD_INPUT_DATA );