1 /*
2 * libZRTP SDK library, implements the ZRTP secure VoIP protocol.
3 * Copyright (c) 2006-2009 Philip R. Zimmermann. All rights reserved.
4 * Contact: http://philzimmermann.com
5 * For licensing and other legal details, see the file zrtp_legal.c.
6 *
7 * Viktor Krykun <v.krikun at zfoneproject.com>
8 */
9
10 #ifndef __ZRTP_BASE_H__
11 #define __ZRTP_BASE_H__
12
13 #include "zrtp_config.h"
14
15 typedef double uint64_t_;
16
17 typedef uint8_t zrtp_uchar4_t[4];
18 typedef uint8_t zrtp_uchar8_t[8];
19 typedef uint8_t zrtp_uchar12_t[12];
20 typedef uint8_t zrtp_uchar16_t[16];
21 typedef uint8_t zrtp_uchar32_t[32];
22 typedef uint8_t zrtp_uchar64_t[64];
23 typedef uint8_t zrtp_uchar128_t[128];
24 typedef uint8_t zrtp_uchar256_t[256];
25 typedef uint8_t zrtp_uchar1024_t[1024];
26
27 typedef uint32_t zrtp_id_t;
28
29 typedef struct zrtp_profile_t zrtp_profile_t;
30 typedef struct zrtp_stream_t zrtp_stream_t;
31 typedef struct zrtp_session_t zrtp_session_t;
32 typedef struct zrtp_global_t zrtp_global_t;
33
34 typedef struct zrtp_protocol_t zrtp_protocol_t;
35 typedef struct zrtp_srtp_ctx_t zrtp_srtp_ctx_t;
36 typedef struct zrtp_shared_secret_t zrtp_shared_secret_t;
37 typedef struct zrtp_retry_task_t zrtp_retry_task_t;
38
39 typedef struct zrtp_hash_t zrtp_hash_t;
40 typedef struct zrtp_cipher_t zrtp_cipher_t;
41 typedef struct zrtp_auth_tag_length_t zrtp_auth_tag_length_t;
42 typedef struct zrtp_pk_scheme_t zrtp_pk_scheme_t;
43 typedef struct zrtp_sas_scheme_t zrtp_sas_scheme_t;
44 typedef struct zrtp_sig_scheme_t zrtp_sig_scheme_t;
45
46 typedef struct zrtp_mutex_t zrtp_mutex_t;
47 typedef struct zrtp_sem_t zrtp_sem_t;
48
49 typedef struct zrtp_stream_info_t zrtp_stream_info_t;
50 typedef struct zrtp_session_info_t zrtp_session_info_t;
51
52 #include "sha2.h"
53 #define MD_CTX sha512_ctx
54 #define MD_Update(a,b,c) sha512_hash((const unsigned char *)(b),c,a)
55
56
57 /**
58 * \brief Function computing minimum value
59 *
60 * This macro returns the lesser of two values. If the numbers are equal, either of them is returned.
61 *
62 * \param left - first value for comparison;
63 * \param right - second value for comparison.
64 * \return
65 * - lesser of compared numbers.
66 */
67 #define ZRTP_MIN(left, right) ((left < right) ? left : right)
68
69
70 /*!
71 * \brief zrtp_htonXX, zrtp_ntohXX - convert values between host and network
72 * byte order
73 *
74 * To avoid ambiguities and difficulties with compilation on various platforms,
75 * we designed our own swap functions. Byte order detection is based on zrtp_system.h.
76 *
77 * On the i80x86 the host byte order is little-endian (least significant byte
78 * first), whereas the network byte order, as used on the Internet, is
79 * big-endian (most significant byte first).
80 */
81
82 uint16_t zrtp_swap16(uint16_t x);
83 uint32_t zrtp_swap32(uint32_t x);
84 uint64_t zrtp_swap64(uint64_t x);
85
86 #if ZRTP_BYTE_ORDER == ZBO_BIG_ENDIAN
87 /*! Converts 16 bit unsigned integer to network byte order */
88 #define zrtp_hton16(x) (x)
89 /*! Converts 32 bit unsigned integer to network byte order */
90 #define zrtp_hton32(x) (x)
91 /*! Converts 64 bit unsigned integer to network byte order */
92 #define zrtp_hton64(x) (x)
93
94 /*! Converts 16 bit unsigned integer to host byte order */
95 #define zrtp_ntoh16(x) (x)
96 /*! Converts 32 bit unsigned integer to host byte order */
97 #define zrtp_ntoh32(x) (x)
98 /*! Converts 64 bit unsigned integer to host byte order */
99 #define zrtp_ntoh64(x) (x)
100 #else /* ZBO_BIG_ENDIAN */
101 /*! Converts 16 bit unsigned integer to network byte order */
102 #define zrtp_hton16(x) (zrtp_swap16(x))
103 /*! Converts 32 bit unsigned integer to network byte order */
104 #define zrtp_hton32(x) (zrtp_swap32(x))
105 /*! Converts 64 bit unsigned integer to network byte order */
106 #define zrtp_hton64(x) (zrtp_swap64(x))
107
108 /*! Converts 16 bit unsigned integer to host byte order */
109 #define zrtp_ntoh16(x) (zrtp_swap16(x))
110 /*! Converts 32 bit unsigned integer to host byte order */
111 #define zrtp_ntoh32(x) (zrtp_swap32(x))
112 /*! Converts 64 bit unsigned integer to host byte order */
113 #define zrtp_ntoh64(x) (zrtp_swap64(x))
114 #endif
115
116
117 /*
118 * 128 and 256-bit structures used in Ciphers and SRTP module
119 */
120 typedef union
121 {
122 uint8_t v8[16];
123 uint16_t v16[8];
124 uint32_t v32[4];
125 uint64_t v64[2];
126 } zrtp_v128_t;
127
128 typedef union
129 {
130 uint8_t v8[32];
131 uint16_t v16[16];
132 uint32_t v32[8];
133 uint64_t v64[4];
134 } zrtp_v256_t;
135
136 /*
137 * The following macros define the data manipulation functions.
138 *
139 * If DATATYPES_USE_MACROS is defined, then these macros are used directly (and
140 * function-call overhead is avoided). Otherwise, the macros are used through
141 * the functions defined in datatypes.c (and the compiler provides better
142 * warnings).
143 */
144
145 #define _zrtp_v128_xor(z, x, y) \
146 ( \
147 (z)->v32[0] = (x)->v32[0] ^ (y)->v32[0], \
148 (z)->v32[1] = (x)->v32[1] ^ (y)->v32[1], \
149 (z)->v32[2] = (x)->v32[2] ^ (y)->v32[2], \
150 (z)->v32[3] = (x)->v32[3] ^ (y)->v32[3] \
151 )
152
153 #define _zrtp_v128_get_bit(x, bit) \
154 ( \
155 ( (((x)->v32[(bit) >> 5]) >> ((bit) & 31)) & 1) \
156 )
157
158 #define zrtp_bitmap_get_bit(x, bit) \
159 ( \
160 ( (((x)[(bit) >> 3]) >> ((bit) & 7) ) & 1) \
161 )
162
163 #define zrtp_bitmap_set_bit(x, bit) \
164 ( \
165 ( (((x)[(bit) >> 3])) |= ((uint8_t)1 << ((bit) & 7)) ) \
166 )
167
168 #define zrtp_bitmap_clear_bit(x, bit) \
169 ( \
170 ( (((x)[(bit) >> 3])) &= ~((uint8_t)1 << ((bit) & 7)) ) \
171 )
172
173 void zrtp_bitmap_left_shift(uint8_t *x, int width_bytes, int index);
174
175 void zrtp_v128_xor(zrtp_v128_t *z, zrtp_v128_t *x, zrtp_v128_t *y);
176
177
178
179 //WIN64 {
180 #if (ZRTP_PLATFORM == ZP_WIN32_KERNEL)
181
182 #ifdef WIN64 // For 64-bit apps
183
184 unsigned __int64 __rdtsc(void);
185 #pragma intrinsic(__rdtsc)
186 #define _RDTSC __rdtsc
187
188 #else // For 32-bit apps
189
190 #define _RDTSC_STACK(ts) \
191 __asm rdtsc \
192 __asm mov DWORD PTR [ts], eax \
193 __asm mov DWORD PTR [ts+4], edx
194
_inl_rdtsc32()195 __inline unsigned __int64 _inl_rdtsc32() {
196 unsigned __int64 t;
197 _RDTSC_STACK(t);
198 return t;
199 }
200 #define _RDTSC _inl_rdtsc32
201
202 #endif
203
204 #endif
205 //WIN64 }
206
207
208 #endif /*__ZRTP_BASE_H__*/
209