1 /* *****************************************************************
3 * Copyright 2015 Samsung Electronics All Rights Reserved.
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
19 ******************************************************************/
20 #ifndef CA_ADAPTER_NET_DTLS_H_
21 #define CA_ADAPTER_NET_DTLS_H_
24 #include "uarraylist.h"
26 #include "caadapterutils.h"
27 #include "ocsecurityconfig.h"
28 #include "cainterface.h"
32 * Currently DTLS supported adapters(2) WIFI and ETHENET for linux platform.
34 #define MAX_SUPPORTED_ADAPTERS 2
37 * The implementation will be provided by OIC RI layer.
39 extern void OCGetDtlsPskCredentials(CADtlsPskCredsBlob_t **credInfo);
41 typedef void (*CAPacketReceivedCallback)(const CASecureEndpoint_t *sep,
42 const void *data, uint32_t dataLength);
44 typedef void (*CAPacketSendCallback)(CAEndpoint_t *endpoint,
45 const void *data, uint32_t dataLength);
48 * Data structure for holding the send and recv callbacks.
50 typedef struct CAAdapterCallbacks
52 CAPacketReceivedCallback recvCallback; /**< Callback used to send data to upper layer. */
53 CAPacketSendCallback sendCallback; /**< Callback used to send data to socket layer. */
54 } stCAAdapterCallbacks_t;
57 * Data structure for holding the tinyDTLS interface related info.
59 typedef struct stCADtlsContext
61 u_arraylist_t *peerInfoList; /**< peerInfo list which holds the mapping between
62 peer id to it's n/w address. */
63 u_arraylist_t *cacheList; /**< PDU's are cached until DTLS session is formed. */
64 struct dtls_context_t *dtlsContext; /**< Pointer to tinyDTLS context. */
65 struct stPacketInfo *packetInfo; /**< used by callback during
66 decryption to hold address/length. */
67 dtls_handler_t callbacks; /**< Pointer to callbacks needed by tinyDTLS. */
68 stCAAdapterCallbacks_t adapterCallbacks[MAX_SUPPORTED_ADAPTERS];
72 * Data structure for holding the decrypted data address
73 * and length provided by tinyDTLS callback interface.
75 typedef struct stPacketInfo
82 * tinyDTLS library error codes.
89 DTLS_SESSION_INITIATED,
94 /** Structure to have address information which will match with DTLS session_t structure.*/
97 socklen_t size; /**< Size of address. */
101 struct sockaddr_storage st;
102 struct sockaddr_in sin;
103 struct sockaddr_in6 sin6;
104 } addr; /**< Address information. */
105 uint8_t ifIndex; /**< Holds adapter index to get callback info. */
106 } stCADtlsAddrInfo_t;
109 * structure to holds the information of cache message and address info.
111 typedef struct CACacheMessage
115 stCADtlsAddrInfo_t destSession;
116 } stCACacheMessage_t;
120 * Used set send and recv callbacks for different adapters(WIFI,EtherNet).
122 * @param[in] recvCallback packet received callback.
123 * @param[in] sendCallback packet sent callback.
124 * @param[in] type type of adapter.
127 void CADTLSSetAdapterCallbacks(CAPacketReceivedCallback recvCallback,
128 CAPacketSendCallback sendCallback,
129 CATransportAdapter_t type);
132 * Register callback to get DTLS PSK credentials.
133 * @param[in] credCallback callback to get DTLS credentials.
135 void CADTLSSetCredentialsCallback(CAGetDTLSCredentialsHandler credCallback);
138 * Select the cipher suite for dtls handshake
140 * @param[in] cipher cipher suite
141 * 0xC018 : TLS_ECDH_anon_WITH_AES_128_CBC_SHA_256
142 * 0xC0A8 : TLS_PSK_WITH_AES_128_CCM_8
143 * 0xC0AE : TLS_ECDHE_ECDSA_WITH_AES_128_CCM_8
145 * @retval ::CA_STATUS_OK for success, otherwise some error value
147 CAResult_t CADtlsSelectCipherSuite(const dtls_cipher_t cipher);
150 * Enable anonymous ECDH cipher suite for dtls handshake
152 * @param[in] enable TRUE/FALSE enables/disables anonymous cipher suite
154 * @retval ::CA_STATUS_OK for success, otherwise some error value
156 CAResult_t CADtlsEnableAnonECDHCipherSuite(const bool enable);
159 * Initiate DTLS handshake with selected cipher suite
161 * @param[in] endpoint information of network address
163 * @retval ::CA_STATUS_OK for success, otherwise some error value
165 CAResult_t CADtlsInitiateHandshake(const CAEndpoint_t *endpoint);
168 * Close the DTLS session
170 * @param[in] endpoint information of network address
172 * @retval ::CA_STATUS_OK for success, otherwise some error value
174 CAResult_t CADtlsClose(const CAEndpoint_t *endpoint);
177 * Generate ownerPSK using PRF
178 * OwnerPSK = TLS-PRF('master key' , 'oic.sec.doxm.jw',
179 * 'ID of new device(Resource Server)',
180 * 'ID of owner smart-phone(Provisioning Server)')
182 * @param[in] endpoint information of network address
183 * @param[in] label Ownership transfer method e.g)"oic.sec.doxm.jw"
184 * @param[in] labelLen Byte length of label
185 * @param[in] rsrcServerDeviceID ID of new device(Resource Server)
186 * @param[in] rsrcServerDeviceIDLen Byte length of rsrcServerDeviceID
187 * @param[in] provServerDeviceID label of previous owner
188 * @param[in] provServerDeviceIDLen byte length of provServerDeviceID
189 * @param[in,out] ownerPSK Output buffer for owner PSK
190 * @param[in] ownerPSKSize Byte length of the ownerPSK to be generated
192 * @retval ::CA_STATUS_OK for success, otherwise some error value
194 CAResult_t CADtlsGenerateOwnerPSK(const CAEndpoint_t *endpoint,
195 const uint8_t* label, const size_t labelLen,
196 const uint8_t* rsrcServerDeviceID, const size_t rsrcServerDeviceIDLen,
197 const uint8_t* provServerDeviceID, const size_t provServerDeviceIDLen,
198 uint8_t* ownerPSK, const size_t ownerPSKSize);
202 * initialize tinyDTLS library and other necessary initialization.
204 * @return 0 on success otherwise a positive error value.
205 * @retval ::CA_STATUS_OK Successful.
206 * @retval ::CA_STATUS_INVALID_PARAM Invalid input arguments.
207 * @retval ::CA_STATUS_FAILED Operation failed.
210 CAResult_t CAAdapterNetDtlsInit();
213 * de-inits tinyDTLS library and free the allocated memory.
215 void CAAdapterNetDtlsDeInit();
218 * Performs DTLS encryption of the CoAP PDU. If a DTLS session does not exist yet
219 * with the @dst, a DTLS handshake will be started. In case where a new DTLS handshake
220 * is started, pdu info is cached to be send when session setup is finished.
222 * @param[in] endpoint address to which data will be sent.
223 * @param[in] port port to which data will be sent.
224 * @param[in] data length of data.
225 * @param[in] dataLen length of given data
227 * @return 0 on success otherwise a positive error value.
228 * @retval ::CA_STATUS_OK Successful.
229 * @retval ::CA_STATUS_INVALID_PARAM Invalid input arguments.
230 * @retval ::CA_STATUS_FAILED Operation failed.
234 CAResult_t CAAdapterNetDtlsEncrypt(const CAEndpoint_t *endpoint,
239 * Performs DTLS decryption of the data received on
240 * secure port. This method performs in-place decryption
241 * of the cipher-text buffer. If a DTLS handshake message
242 * is received or decryption failure happens, this method
243 * returns -1. If a valid application PDU is decrypted, it
244 * returns the length of the decrypted pdu.
246 * @return 0 on success otherwise a positive error value.
247 * @retval ::CA_STATUS_OK Successful.
248 * @retval ::CA_STATUS_INVALID_PARAM Invalid input arguments.
249 * @retval ::CA_STATUS_FAILED Operation failed.
252 CAResult_t CAAdapterNetDtlsDecrypt(const CASecureEndpoint_t *sep,
256 #endif /* CA_ADAPTER_NET_DTLS_H_ */