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Check key type against selected key exchange

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This commit is contained in:
Manuel Pégourié-Gonnard
2013-08-19 13:50:33 +02:00
parent 20846b1a50
commit 09edda888e
3 changed files with 32 additions and 0 deletions
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13
library/ssl_cli.c
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@ -1394,6 +1394,19 @@ static int ssl_parse_server_key_exchange( ssl_context *ssl )
return( POLARSSL_ERR_SSL_BAD_HS_SERVER_KEY_EXCHANGE );
}
if( pk_alg != POLARSSL_PK_NONE )
{
if( pk_alg != ssl_get_ciphersuite_sig_pk_alg( ciphersuite_info ) )
{
SSL_DEBUG_MSG( 1, ( "bad server key exchange message" ) );
return( POLARSSL_ERR_SSL_BAD_HS_SERVER_KEY_EXCHANGE );
}
}
else
{
pk_alg = ssl_get_ciphersuite_sig_pk_alg( ciphersuite_info );
}
sig_len = ( p[0] << 8 ) | p[1];
p += 2;