added pts_dh_group_error_create() and pts_dh_nonce_error_create()

src/libpts/pts/pts_error.c

@@ -56,4 +56,44 @@ pa_tnc_attr_t* pts_hash_alg_error_create(pts_meas_algorithms_t algorithms)
 	writer->destroy(writer);
 
 	return attr;
-}
+}
+
+/**
+ * Described in header.
+ */
+pa_tnc_attr_t* pts_dh_group_error_create(pts_dh_group_t dh_groups)
+{
+	bio_writer_t *writer;
+	chunk_t msg_info;
+	pa_tnc_attr_t *attr;
+
+	writer = bio_writer_create(4);
+	writer->write_uint16(writer, 0x0000);
+	writer->write_uint16(writer, dh_groups);
+	msg_info = writer->get_buf(writer);
+	attr = ietf_attr_pa_tnc_error_create(PEN_TCG, TCG_PTS_DH_GRPS_NOT_SUPPORTED,
+										 msg_info);
+	writer->destroy(writer);
+
+	return attr;
+}
+
+/**
+ * Described in header.
+ */
+pa_tnc_attr_t* pts_dh_nonce_error_create(int min_nonce_len, int max_nonce_len)
+{
+	bio_writer_t *writer;
+	chunk_t msg_info;
+	pa_tnc_attr_t *attr;
+
+	writer = bio_writer_create(4);
+	writer->write_uint16(writer, min_nonce_len);
+	writer->write_uint16(writer, max_nonce_len);
+	msg_info = writer->get_buf(writer);
+	attr = ietf_attr_pa_tnc_error_create(PEN_TCG, TCG_PTS_BAD_NONCE_LENGTH,
+										 msg_info);
+	writer->destroy(writer);
+
+	return attr;
+}

src/libpts/pts/pts_error.h

@@ -24,10 +24,14 @@
 typedef enum pts_error_code_t pts_error_code_t;
 
 #include "pts_meas_algo.h"
+#include "pts_dh_group.h"
 #include "pa_tnc/pa_tnc_attr.h"
 
 #include <library.h>
 
+#define PTS_MIN_NONCE_LEN		17
+#define PTS_MAX_NONCE_LEN		0xffff
+
 /**
  * PTS Attestation Error Codes
  * see section 3.14.2 of PTS Protocol: Binding to TNC IF-M Specification
@@ -61,8 +65,25 @@ extern enum_name_t *pts_error_code_names;
  * Creates a PTS Hash Algorithm Not Supported Error Attribute
  * see section 4.2.2 of PTS Protocol: Binding to TNC IF-M Specification
  *
- * @param algorithms	supported measurement hash algorithms
+ * @param algorithms		supported measurement hash algorithms
  */
 pa_tnc_attr_t* pts_hash_alg_error_create(pts_meas_algorithms_t algorithms);
 
+/**
+ * Creates a PTS DH Group Not Supported Error Attribute
+ * see section 4.2.4 of PTS Protocol: Binding to TNC IF-M Specification
+ *
+ * @param dh_groups			supported DH groups
+ */
+pa_tnc_attr_t* pts_dh_group_error_create(pts_dh_group_t dh_groups);
+
+/**
+ * Creates a PTS DH PN Nonce Not Supported Error Attribute
+ * see section 4.2.5 of PTS Protocol: Binding to TNC IF-M Specification
+ *
+ * @param min_nonce_len		minimum nonce length
+ * @param max_nonce_len		maximum nonce length
+ */
+pa_tnc_attr_t* pts_dh_nonce_error_create(int min_nonce_len, int max_nonce_len);
+
 #endif /** PTS_ERROR_H_ @}*/