net/rxrpc/rxkad.c

687  * send a Kerberos security response
743  * calculate the response checksum
745 static void rxkad_calc_response_checksum(struct rxkad_response *response)
749 	u8 *p = (u8 *) response;
751 	for (loop = sizeof(*response); loop > 0; loop--)
754 	response->encrypted.checksum = htonl(csum);
758  * encrypt the response packet
830 	/* build the response packet */
848 	/* calculate the response checksum and then do the encryption */
858  * decrypt the kerberos IV ticket in the response
986  * decrypt the response packet
1020  * verify a response
1025 	struct rxkad_response *response;
1054 	response = kzalloc(sizeof(struct rxkad_response), GFP_NOFS);
1055 	if (!response)
1059 			  response, sizeof(*response)) < 0) {
1065 	version = ntohl(response->version);
1066 	ticket_len = ntohl(response->ticket_len);
1067 	kvno = ntohl(response->kvno);
1095 	if (skb_copy_bits(skb, sizeof(struct rxrpc_wire_header) + sizeof(*response),
1108 	 * response */
1109 	rxkad_decrypt_response(conn, response, &session_key);
1111 	if (ntohl(response->encrypted.epoch) != conn->proto.epoch ||
1112 	    ntohl(response->encrypted.cid) != conn->proto.cid ||
1113 	    ntohl(response->encrypted.securityIndex) != conn->security_ix) {
1119 	csum = response->encrypted.checksum;
1120 	response->encrypted.checksum = 0;
1121 	rxkad_calc_response_checksum(response);
1122 	if (response->encrypted.checksum != csum) {
1129 		u32 call_id = ntohl(response->encrypted.call_id[i]);
1154 	if (ntohl(response->encrypted.inc_nonce) != conn->rxkad.nonce + 1) {
1160 	level = ntohl(response->encrypted.level);
1176 	kfree(response);
1183 	kfree(response);
1190 	kfree(response);
1192 	/* Ignore the response packet if we got a temporary error such as