source: svn/newcon3bcm2_21bu/nexus/lib/dtcp_ip/include/b_dtcp_content.h

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1/********************************************************************************************
2*     (c)2004-2011 Broadcom Corporation                                                     *
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16*  1.     This program, including its structure, sequence and organization, constitutes     *
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38 *
39 * $brcm_Workfile: b_dtcp_content.h $
40 * $brcm_Revision: 6 $
41 * $brcm_Date: 2/11/11 5:37p $
42 *
43 * Module Description:
44 *   DTCP content management functions.
45 *
46 * Revision History:
47 *
48 * $brcm_Log: /nexus/lib/dtcp_ip/include/b_dtcp_content.h $
49 *
50 * 6   2/11/11 5:37p leisun
51 * SWSECURITY-32: Updated lib to V1SE1.3 conformance.
52 *
53 * 5   7/16/09 7:03p lwhite
54 * PR55693: Fixed signedness
55 *
56 * 4   7/13/09 11:23a leisun
57 * PR 55693: Re-design interfaces, and other cleanups
58 *
59 * 3   6/30/09 10:37p leisun
60 * PR 55693: Added exchange key expiration timer
61 *
62 * 2   6/25/09 4:30p leisun
63 * PR 55693: Fix memory leak for DTCP
64 *
65 * 1   6/5/09 4:07p leisun
66 * PR 55693: checking in DTCP-IP lib
67 *********************************************************************************************/
68/*! \file b_dtcp_content.h
69 *  \brief define DTCP-IP content managment data and function prototypes.
70 */
71#ifndef __DTCP_CONTENT_MANAGEMENT_H__
72#define __DTCP_CONTENT_MANAGEMENT_H__
73
74#include "b_dtcp_constants.h"
75
76/*! \struct B_DtcpIpPcpHeader
77 *
78 * This header is only applied for DTCP/IP
79 */
80typedef struct B_DtcpIpPcpHeader
81{
82#if BSTD_CPU_ENDIAN == BSTD_ENDIAN_BIG
83        unsigned int Reserved:  3;              /* Reserved */
84        unsigned int C_A                :       1;              /* Cipher algorithm, 0-AES128 1-Optional M6 */
85        unsigned int Emi                :       4;              /* Extended EMI */
86#else
87        unsigned int Emi                :       4;
88        unsigned int C_A                :       1;
89        unsigned int Reserved:  3;
90#endif
91        unsigned char ExchKeyLabel;
92        unsigned char Nc[DTCP_CONTENT_KEY_NONCE_SIZE];
93        int CL;
94} __attribute__((__packed__)) B_DTCP_IP_PCPHeader_T;
95
96/* PCP_UR header fromat
97 * DTCP-IP V1SE 1.3 or later
98 */
99typedef struct B_DtcpIpPCP_UR
100{
101#if BSTD_CPU_ENDIAN == BSTD_ENDIAN_BIG
102        unsigned int UR_Mode:   2;
103        unsigned int Content_type:      2;
104        unsigned int APS:               2;
105        unsigned int ICT:               1;
106        unsigned int Source:            1;
107        unsigned int AST:               1;
108        unsigned int Reserved:  7;
109#else
110        unsigned int Source:            1;
111        unsigned int ICT:               1;
112        unsigned int APS:               2;
113        unsigned int Content_type:      2;
114        unsigned int UR_Mode:   2;
115        unsigned int Reserved:  7;
116        unsigned int AST:               1;
117#endif
118}__attribute__((__packed__)) B_DTCP_IP_PCP_UR_T;
119/*
120 * PCP header format when PCP-UR is used.
121 * DTCP-IP spec V1SE 1.3 or later.
122 */
123typedef struct B_DtcpIpPcpURHeader
124{
125#if BSTD_CPU_ENDIAN == BSTD_ENDIAN_BIG
126        unsigned int Reserved:  3;              /* Reserved */
127        unsigned int C_A                :       1;              /* Cipher algorithm, 0-AES128 1-Optional M6 */
128        unsigned int Emi                :       4;              /* Extended EMI */
129#else
130        unsigned int Emi                :       4;
131        unsigned int C_A                :       1;
132        unsigned int Reserved:  3;
133#endif
134        unsigned char ExchKeyLabel;
135        B_DTCP_IP_PCP_UR_T pcp_ur;
136        unsigned char SNc[DTCP_CONTENT_KEY_NONCE_SIZE - 2];
137        int CL;
138}__attribute__((__packed__)) B_DTCP_IP_PCPURHeader_T;
139
140typedef void * B_PacketHandle_T;
141
142/*! \brief B_DTCP_Content_CreatePacketHeader create pcp header, called by source device only.
143 *  \param[in] hAkehandle handle to AKE session.
144 *  \param[in] Transport stream transport type.
145 *  \param[in] StreamData point to source stream data structure.
146 *  \param[in] ContentSize total size of the content.
147 *  \param[in,out] pPacketHeader Buffer to hold created packet header
148 */
149BERR_Code B_DTCP_Content_CreatePacketHeader(B_AkeHandle_T hAkeHandle, B_StreamTransport_T  Transport,
150                struct __b_dtcp_stream_data *StreamData,
151                int ContentSize,
152                unsigned char pPacketHeader[DTCP_CONTENT_PACKET_HEADER_SIZE]);
153
154/*! \brief B_DTCP_Content_ConsumePacketHeader consume pcp header, called by sink device only.
155 *  \param[in] hAkeHandle handle to active AKE session.
156 *  \param[in] pPacketHeader Buffer to hold packet header
157 *  \param[in] StreamData pointer to sink stream data structure
158 */
159BERR_Code B_DTCP_Content_ConsumePacketHeader(B_AkeHandle_T hAkeHandle,
160                unsigned char * pPacketHeader,
161                struct __b_dtcp_stream_data *StreamData);
162/*! \brief B_DTCP_Content_EncryptData encrypt protected content, called by source only.
163 *  \param[in] aAkeHandle AKE session handle.
164 *  \param[in] aPacketHandle handle to packet data (obtained from create packet header function).
165 *  \param[in] aInBuffer input buffer.
166 *  \param[in,out] aOutBuffer output buffer.
167 *  \param[in] aBufferLength length of input buffer.
168 */
169BERR_Code B_DTCP_Content_EncryptData(B_AkeHandle_T aAkeHandle, B_PacketHandle_T aPacketHandle, 
170                            unsigned char    *aInBuffer,
171                            unsigned char    *aOutBuffer,
172                            unsigned int      aBufferLength);
173/*! \brief B_DTCP_Content_DecryptData decrypt protected content, called by source only.
174 *  \param[in] aAkeHandle AKE session handle.
175 *  \param[in] aPacketHandle handle to packet data (obtained from create packet header function).
176 *  \param[in] aInBuffer input buffer.
177 *  \param[in,out] aOutBuffer output buffer.
178 *  \param[in] aBufferLength length of input buffer.
179 */
180BERR_Code B_DTCP_Content_DecryptData(B_AkeHandle_T aAkeHandle, B_PacketHandle_T  aPacketHandle, 
181                            unsigned char    *aInBuffer,
182                            unsigned char    *aOutBuffer,
183                            unsigned int      aBufferLength);
184/*! \brief close packet , free packet handle and cipher context.
185 */
186void B_DTCP_Content_ClosePacket(B_PacketHandle_T aPacketHandle);
187
188#endif
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