Geant4 Cross Reference

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Geant4/externals/expat/src/siphash.h

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Differences between /externals/expat/src/siphash.h (Version 11.3.0) and /externals/expat/src/siphash.h (Version 11.1)


  1 /* ===========================================      1 /* ==========================================================================
  2  * siphash.h - SipHash-2-4 in a single header       2  * siphash.h - SipHash-2-4 in a single header file
  3  * -------------------------------------------      3  * --------------------------------------------------------------------------
  4  * Derived by William Ahern from the reference      4  * Derived by William Ahern from the reference implementation[1] published[2]
  5  * by Jean-Philippe Aumasson and Daniel J. Ber      5  * by Jean-Philippe Aumasson and Daniel J. Berstein.
  6  * Minimal changes by Sebastian Pipping and Vi      6  * Minimal changes by Sebastian Pipping and Victor Stinner on top, see below.
  7  * Licensed under the CC0 Public Domain Dedica      7  * Licensed under the CC0 Public Domain Dedication license.
  8  *                                                  8  *
  9  * 1. https://www.131002.net/siphash/siphash24      9  * 1. https://www.131002.net/siphash/siphash24.c
 10  * 2. https://www.131002.net/siphash/              10  * 2. https://www.131002.net/siphash/
 11  * -------------------------------------------     11  * --------------------------------------------------------------------------
 12  * HISTORY:                                        12  * HISTORY:
 13  *                                                 13  *
 14  * 2020-10-03  (Sebastian Pipping)                 14  * 2020-10-03  (Sebastian Pipping)
 15  *   - Drop support for Visual Studio 9.0/2008     15  *   - Drop support for Visual Studio 9.0/2008 and earlier
 16  *                                                 16  *
 17  * 2019-08-03  (Sebastian Pipping)                 17  * 2019-08-03  (Sebastian Pipping)
 18  *   - Mark part of sip24_valid as to be exclu     18  *   - Mark part of sip24_valid as to be excluded from clang-format
 19  *   - Re-format code using clang-format 9         19  *   - Re-format code using clang-format 9
 20  *                                                 20  *
 21  * 2018-07-08  (Anton Maklakov)                    21  * 2018-07-08  (Anton Maklakov)
 22  *   - Add "fall through" markers for GCC's -W     22  *   - Add "fall through" markers for GCC's -Wimplicit-fallthrough
 23  *                                                 23  *
 24  * 2017-11-03  (Sebastian Pipping)                 24  * 2017-11-03  (Sebastian Pipping)
 25  *   - Hide sip_tobin and sip_binof unless SIP     25  *   - Hide sip_tobin and sip_binof unless SIPHASH_TOBIN macro is defined
 26  *                                                 26  *
 27  * 2017-07-25  (Vadim Zeitlin)                     27  * 2017-07-25  (Vadim Zeitlin)
 28  *   - Fix use of SIPHASH_MAIN macro               28  *   - Fix use of SIPHASH_MAIN macro
 29  *                                                 29  *
 30  * 2017-07-05  (Sebastian Pipping)                 30  * 2017-07-05  (Sebastian Pipping)
 31  *   - Use _SIP_ULL macro to not require a C++     31  *   - Use _SIP_ULL macro to not require a C++11 compiler if compiled as C++
 32  *   - Add const qualifiers at two places          32  *   - Add const qualifiers at two places
 33  *   - Ensure <=80 characters line length (ass     33  *   - Ensure <=80 characters line length (assuming tab width 4)
 34  *                                                 34  *
 35  * 2017-06-23  (Victor Stinner)                    35  * 2017-06-23  (Victor Stinner)
 36  *   - Address Win64 compile warnings              36  *   - Address Win64 compile warnings
 37  *                                                 37  *
 38  * 2017-06-18  (Sebastian Pipping)                 38  * 2017-06-18  (Sebastian Pipping)
 39  *   - Clarify license note in the header          39  *   - Clarify license note in the header
 40  *   - Address C89 issues:                         40  *   - Address C89 issues:
 41  *     - Stop using inline keyword (and let co     41  *     - Stop using inline keyword (and let compiler decide)
 42  *     - Replace _Bool by int                      42  *     - Replace _Bool by int
 43  *     - Turn macro siphash24 into a function      43  *     - Turn macro siphash24 into a function
 44  *     - Address invalid conversion (void poin     44  *     - Address invalid conversion (void pointer) by explicit cast
 45  *   - Address lack of stdint.h for Visual Stu     45  *   - Address lack of stdint.h for Visual Studio 2003 to 2008
 46  *   - Always expose sip24_valid (for self-tes     46  *   - Always expose sip24_valid (for self-tests)
 47  *                                                 47  *
 48  * 2012-11-04 - Born.  (William Ahern)             48  * 2012-11-04 - Born.  (William Ahern)
 49  * -------------------------------------------     49  * --------------------------------------------------------------------------
 50  * USAGE:                                          50  * USAGE:
 51  *                                                 51  *
 52  * SipHash-2-4 takes as input two 64-bit words     52  * SipHash-2-4 takes as input two 64-bit words as the key, some number of
 53  * message bytes, and outputs a 64-bit word as     53  * message bytes, and outputs a 64-bit word as the message digest. This
 54  * implementation employs two data structures:     54  * implementation employs two data structures: a struct sipkey for
 55  * representing the key, and a struct siphash      55  * representing the key, and a struct siphash for representing the hash
 56  * state.                                          56  * state.
 57  *                                                 57  *
 58  * For converting a 16-byte unsigned char arra     58  * For converting a 16-byte unsigned char array to a key, use either the
 59  * macro sip_keyof or the routine sip_tokey. T     59  * macro sip_keyof or the routine sip_tokey. The former instantiates a
 60  * compound literal key, while the latter requ     60  * compound literal key, while the latter requires a key object as a
 61  * parameter.                                      61  * parameter.
 62  *                                                 62  *
 63  *  unsigned char secret[16];                      63  *  unsigned char secret[16];
 64  *  arc4random_buf(secret, sizeof secret);         64  *  arc4random_buf(secret, sizeof secret);
 65  *  struct sipkey *key = sip_keyof(secret);        65  *  struct sipkey *key = sip_keyof(secret);
 66  *                                                 66  *
 67  * For hashing a message, use either the conve     67  * For hashing a message, use either the convenience macro siphash24 or the
 68  * routines sip24_init, sip24_update, and sip2     68  * routines sip24_init, sip24_update, and sip24_final.
 69  *                                                 69  *
 70  *  struct siphash state;                          70  *  struct siphash state;
 71  *  void *msg;                                     71  *  void *msg;
 72  *  size_t len;                                    72  *  size_t len;
 73  *  uint64_t hash;                                 73  *  uint64_t hash;
 74  *                                                 74  *
 75  *  sip24_init(&state, key);                       75  *  sip24_init(&state, key);
 76  *  sip24_update(&state, msg, len);                76  *  sip24_update(&state, msg, len);
 77  *  hash = sip24_final(&state);                    77  *  hash = sip24_final(&state);
 78  *                                                 78  *
 79  * or                                              79  * or
 80  *                                                 80  *
 81  *  hash = siphash24(msg, len, key);               81  *  hash = siphash24(msg, len, key);
 82  *                                                 82  *
 83  * To convert the 64-bit hash value to a canon     83  * To convert the 64-bit hash value to a canonical 8-byte little-endian
 84  * binary representation, use either the macro     84  * binary representation, use either the macro sip_binof or the routine
 85  * sip_tobin. The former instantiates and retu     85  * sip_tobin. The former instantiates and returns a compound literal array,
 86  * while the latter requires an array object a     86  * while the latter requires an array object as a parameter.
 87  * -------------------------------------------     87  * --------------------------------------------------------------------------
 88  * NOTES:                                          88  * NOTES:
 89  *                                                 89  *
 90  * o Neither sip_keyof, sip_binof, nor siphash     90  * o Neither sip_keyof, sip_binof, nor siphash24 will work with compilers
 91  *   lacking compound literal support. Instead     91  *   lacking compound literal support. Instead, you must use the lower-level
 92  *   interfaces which take as parameters the t     92  *   interfaces which take as parameters the temporary state objects.
 93  *                                                 93  *
 94  * o Uppercase macros may evaluate parameters      94  * o Uppercase macros may evaluate parameters more than once. Lowercase
 95  *   macros should not exhibit any such side e     95  *   macros should not exhibit any such side effects.
 96  * ===========================================     96  * ==========================================================================
 97  */                                                97  */
 98 #ifndef SIPHASH_H                                  98 #ifndef SIPHASH_H
 99 #define SIPHASH_H                                  99 #define SIPHASH_H
100                                                   100 
101 #include <stddef.h> /* size_t */                  101 #include <stddef.h> /* size_t */
102 #include <stdint.h> /* uint64_t uint32_t uint8    102 #include <stdint.h> /* uint64_t uint32_t uint8_t */
103                                                   103 
104 /*                                                104 /*
105  * Workaround to not require a C++11 compiler     105  * Workaround to not require a C++11 compiler for using ULL suffix
106  * if this code is included and compiled as C+    106  * if this code is included and compiled as C++; related GCC warning is:
107  * warning: use of C++11 long long integer con    107  * warning: use of C++11 long long integer constant [-Wlong-long]
108  */                                               108  */
109 #define _SIP_ULL(high, low) ((((uint64_t)high)    109 #define _SIP_ULL(high, low) ((((uint64_t)high) << 32) | (low))
110                                                   110 
111 #define SIP_ROTL(x, b) (uint64_t)(((x) << (b))    111 #define SIP_ROTL(x, b) (uint64_t)(((x) << (b)) | ((x) >> (64 - (b))))
112                                                   112 
113 #define SIP_U32TO8_LE(p, v)                       113 #define SIP_U32TO8_LE(p, v)                                                    \
114   (p)[0] = (uint8_t)((v) >> 0);                   114   (p)[0] = (uint8_t)((v) >> 0);                                                \
115   (p)[1] = (uint8_t)((v) >> 8);                   115   (p)[1] = (uint8_t)((v) >> 8);                                                \
116   (p)[2] = (uint8_t)((v) >> 16);                  116   (p)[2] = (uint8_t)((v) >> 16);                                               \
117   (p)[3] = (uint8_t)((v) >> 24);                  117   (p)[3] = (uint8_t)((v) >> 24);
118                                                   118 
119 #define SIP_U64TO8_LE(p, v)                       119 #define SIP_U64TO8_LE(p, v)                                                    \
120   SIP_U32TO8_LE((p) + 0, (uint32_t)((v) >> 0))    120   SIP_U32TO8_LE((p) + 0, (uint32_t)((v) >> 0));                                \
121   SIP_U32TO8_LE((p) + 4, (uint32_t)((v) >> 32)    121   SIP_U32TO8_LE((p) + 4, (uint32_t)((v) >> 32));
122                                                   122 
123 #define SIP_U8TO64_LE(p)                          123 #define SIP_U8TO64_LE(p)                                                       \
124   (((uint64_t)((p)[0]) << 0) | ((uint64_t)((p)    124   (((uint64_t)((p)[0]) << 0) | ((uint64_t)((p)[1]) << 8)                       \
125    | ((uint64_t)((p)[2]) << 16) | ((uint64_t)(    125    | ((uint64_t)((p)[2]) << 16) | ((uint64_t)((p)[3]) << 24)                   \
126    | ((uint64_t)((p)[4]) << 32) | ((uint64_t)(    126    | ((uint64_t)((p)[4]) << 32) | ((uint64_t)((p)[5]) << 40)                   \
127    | ((uint64_t)((p)[6]) << 48) | ((uint64_t)(    127    | ((uint64_t)((p)[6]) << 48) | ((uint64_t)((p)[7]) << 56))
128                                                   128 
129 #define SIPHASH_INITIALIZER                       129 #define SIPHASH_INITIALIZER                                                    \
130   { 0, 0, 0, 0, {0}, 0, 0 }                       130   { 0, 0, 0, 0, {0}, 0, 0 }
131                                                   131 
132 struct siphash {                                  132 struct siphash {
133   uint64_t v0, v1, v2, v3;                        133   uint64_t v0, v1, v2, v3;
134                                                   134 
135   unsigned char buf[8], *p;                       135   unsigned char buf[8], *p;
136   uint64_t c;                                     136   uint64_t c;
137 }; /* struct siphash */                           137 }; /* struct siphash */
138                                                   138 
139 #define SIP_KEYLEN 16                             139 #define SIP_KEYLEN 16
140                                                   140 
141 struct sipkey {                                   141 struct sipkey {
142   uint64_t k[2];                                  142   uint64_t k[2];
143 }; /* struct sipkey */                            143 }; /* struct sipkey */
144                                                   144 
145 #define sip_keyof(k) sip_tokey(&(struct sipkey    145 #define sip_keyof(k) sip_tokey(&(struct sipkey){{0}}, (k))
146                                                   146 
147 static struct sipkey *                            147 static struct sipkey *
148 sip_tokey(struct sipkey *key, const void *src)    148 sip_tokey(struct sipkey *key, const void *src) {
149   key->k[0] = SIP_U8TO64_LE((const unsigned ch    149   key->k[0] = SIP_U8TO64_LE((const unsigned char *)src);
150   key->k[1] = SIP_U8TO64_LE((const unsigned ch    150   key->k[1] = SIP_U8TO64_LE((const unsigned char *)src + 8);
151   return key;                                     151   return key;
152 } /* sip_tokey() */                               152 } /* sip_tokey() */
153                                                   153 
154 #ifdef SIPHASH_TOBIN                              154 #ifdef SIPHASH_TOBIN
155                                                   155 
156 #  define sip_binof(v) sip_tobin((unsigned cha    156 #  define sip_binof(v) sip_tobin((unsigned char[8]){0}, (v))
157                                                   157 
158 static void *                                     158 static void *
159 sip_tobin(void *dst, uint64_t u64) {              159 sip_tobin(void *dst, uint64_t u64) {
160   SIP_U64TO8_LE((unsigned char *)dst, u64);       160   SIP_U64TO8_LE((unsigned char *)dst, u64);
161   return dst;                                     161   return dst;
162 } /* sip_tobin() */                               162 } /* sip_tobin() */
163                                                   163 
164 #endif /* SIPHASH_TOBIN */                        164 #endif /* SIPHASH_TOBIN */
165                                                   165 
166 static void                                       166 static void
167 sip_round(struct siphash *H, const int rounds)    167 sip_round(struct siphash *H, const int rounds) {
168   int i;                                          168   int i;
169                                                   169 
170   for (i = 0; i < rounds; i++) {                  170   for (i = 0; i < rounds; i++) {
171     H->v0 += H->v1;                               171     H->v0 += H->v1;
172     H->v1 = SIP_ROTL(H->v1, 13);                  172     H->v1 = SIP_ROTL(H->v1, 13);
173     H->v1 ^= H->v0;                               173     H->v1 ^= H->v0;
174     H->v0 = SIP_ROTL(H->v0, 32);                  174     H->v0 = SIP_ROTL(H->v0, 32);
175                                                   175 
176     H->v2 += H->v3;                               176     H->v2 += H->v3;
177     H->v3 = SIP_ROTL(H->v3, 16);                  177     H->v3 = SIP_ROTL(H->v3, 16);
178     H->v3 ^= H->v2;                               178     H->v3 ^= H->v2;
179                                                   179 
180     H->v0 += H->v3;                               180     H->v0 += H->v3;
181     H->v3 = SIP_ROTL(H->v3, 21);                  181     H->v3 = SIP_ROTL(H->v3, 21);
182     H->v3 ^= H->v0;                               182     H->v3 ^= H->v0;
183                                                   183 
184     H->v2 += H->v1;                               184     H->v2 += H->v1;
185     H->v1 = SIP_ROTL(H->v1, 17);                  185     H->v1 = SIP_ROTL(H->v1, 17);
186     H->v1 ^= H->v2;                               186     H->v1 ^= H->v2;
187     H->v2 = SIP_ROTL(H->v2, 32);                  187     H->v2 = SIP_ROTL(H->v2, 32);
188   }                                               188   }
189 } /* sip_round() */                               189 } /* sip_round() */
190                                                   190 
191 static struct siphash *                           191 static struct siphash *
192 sip24_init(struct siphash *H, const struct sip    192 sip24_init(struct siphash *H, const struct sipkey *key) {
193   H->v0 = _SIP_ULL(0x736f6d65U, 0x70736575U) ^    193   H->v0 = _SIP_ULL(0x736f6d65U, 0x70736575U) ^ key->k[0];
194   H->v1 = _SIP_ULL(0x646f7261U, 0x6e646f6dU) ^    194   H->v1 = _SIP_ULL(0x646f7261U, 0x6e646f6dU) ^ key->k[1];
195   H->v2 = _SIP_ULL(0x6c796765U, 0x6e657261U) ^    195   H->v2 = _SIP_ULL(0x6c796765U, 0x6e657261U) ^ key->k[0];
196   H->v3 = _SIP_ULL(0x74656462U, 0x79746573U) ^    196   H->v3 = _SIP_ULL(0x74656462U, 0x79746573U) ^ key->k[1];
197                                                   197 
198   H->p = H->buf;                                  198   H->p = H->buf;
199   H->c = 0;                                       199   H->c = 0;
200                                                   200 
201   return H;                                       201   return H;
202 } /* sip24_init() */                              202 } /* sip24_init() */
203                                                   203 
204 #define sip_endof(a) (&(a)[sizeof(a) / sizeof     204 #define sip_endof(a) (&(a)[sizeof(a) / sizeof *(a)])
205                                                   205 
206 static struct siphash *                           206 static struct siphash *
207 sip24_update(struct siphash *H, const void *sr    207 sip24_update(struct siphash *H, const void *src, size_t len) {
208   const unsigned char *p = (const unsigned cha    208   const unsigned char *p = (const unsigned char *)src, *pe = p + len;
209   uint64_t m;                                     209   uint64_t m;
210                                                   210 
211   do {                                            211   do {
212     while (p < pe && H->p < sip_endof(H->buf))    212     while (p < pe && H->p < sip_endof(H->buf))
213       *H->p++ = *p++;                             213       *H->p++ = *p++;
214                                                   214 
215     if (H->p < sip_endof(H->buf))                 215     if (H->p < sip_endof(H->buf))
216       break;                                      216       break;
217                                                   217 
218     m = SIP_U8TO64_LE(H->buf);                    218     m = SIP_U8TO64_LE(H->buf);
219     H->v3 ^= m;                                   219     H->v3 ^= m;
220     sip_round(H, 2);                              220     sip_round(H, 2);
221     H->v0 ^= m;                                   221     H->v0 ^= m;
222                                                   222 
223     H->p = H->buf;                                223     H->p = H->buf;
224     H->c += 8;                                    224     H->c += 8;
225   } while (p < pe);                               225   } while (p < pe);
226                                                   226 
227   return H;                                       227   return H;
228 } /* sip24_update() */                            228 } /* sip24_update() */
229                                                   229 
230 static uint64_t                                   230 static uint64_t
231 sip24_final(struct siphash *H) {                  231 sip24_final(struct siphash *H) {
232   const char left = (char)(H->p - H->buf);        232   const char left = (char)(H->p - H->buf);
233   uint64_t b = (H->c + left) << 56;               233   uint64_t b = (H->c + left) << 56;
234                                                   234 
235   switch (left) {                                 235   switch (left) {
236   case 7:                                         236   case 7:
237     b |= (uint64_t)H->buf[6] << 48;               237     b |= (uint64_t)H->buf[6] << 48;
238     /* fall through */                            238     /* fall through */
239   case 6:                                         239   case 6:
240     b |= (uint64_t)H->buf[5] << 40;               240     b |= (uint64_t)H->buf[5] << 40;
241     /* fall through */                            241     /* fall through */
242   case 5:                                         242   case 5:
243     b |= (uint64_t)H->buf[4] << 32;               243     b |= (uint64_t)H->buf[4] << 32;
244     /* fall through */                            244     /* fall through */
245   case 4:                                         245   case 4:
246     b |= (uint64_t)H->buf[3] << 24;               246     b |= (uint64_t)H->buf[3] << 24;
247     /* fall through */                            247     /* fall through */
248   case 3:                                         248   case 3:
249     b |= (uint64_t)H->buf[2] << 16;               249     b |= (uint64_t)H->buf[2] << 16;
250     /* fall through */                            250     /* fall through */
251   case 2:                                         251   case 2:
252     b |= (uint64_t)H->buf[1] << 8;                252     b |= (uint64_t)H->buf[1] << 8;
253     /* fall through */                            253     /* fall through */
254   case 1:                                         254   case 1:
255     b |= (uint64_t)H->buf[0] << 0;                255     b |= (uint64_t)H->buf[0] << 0;
256     /* fall through */                            256     /* fall through */
257   case 0:                                         257   case 0:
258     break;                                        258     break;
259   }                                               259   }
260                                                   260 
261   H->v3 ^= b;                                     261   H->v3 ^= b;
262   sip_round(H, 2);                                262   sip_round(H, 2);
263   H->v0 ^= b;                                     263   H->v0 ^= b;
264   H->v2 ^= 0xff;                                  264   H->v2 ^= 0xff;
265   sip_round(H, 4);                                265   sip_round(H, 4);
266                                                   266 
267   return H->v0 ^ H->v1 ^ H->v2 ^ H->v3;           267   return H->v0 ^ H->v1 ^ H->v2 ^ H->v3;
268 } /* sip24_final() */                             268 } /* sip24_final() */
269                                                   269 
270 static uint64_t                                   270 static uint64_t
271 siphash24(const void *src, size_t len, const s    271 siphash24(const void *src, size_t len, const struct sipkey *key) {
272   struct siphash state = SIPHASH_INITIALIZER;     272   struct siphash state = SIPHASH_INITIALIZER;
273   return sip24_final(sip24_update(sip24_init(&    273   return sip24_final(sip24_update(sip24_init(&state, key), src, len));
274 } /* siphash24() */                               274 } /* siphash24() */
275                                                   275 
276 /*                                                276 /*
277  * SipHash-2-4 output with                        277  * SipHash-2-4 output with
278  * k = 00 01 02 ...                               278  * k = 00 01 02 ...
279  * and                                            279  * and
280  * in = (empty string)                            280  * in = (empty string)
281  * in = 00 (1 byte)                               281  * in = 00 (1 byte)
282  * in = 00 01 (2 bytes)                           282  * in = 00 01 (2 bytes)
283  * in = 00 01 02 (3 bytes)                        283  * in = 00 01 02 (3 bytes)
284  * ...                                            284  * ...
285  * in = 00 01 02 ... 3e (63 bytes)                285  * in = 00 01 02 ... 3e (63 bytes)
286  */                                               286  */
287 static int                                        287 static int
288 sip24_valid(void) {                               288 sip24_valid(void) {
289   /* clang-format off */                          289   /* clang-format off */
290   static const unsigned char vectors[64][8] =     290   static const unsigned char vectors[64][8] = {
291     { 0x31, 0x0e, 0x0e, 0xdd, 0x47, 0xdb, 0x6f    291     { 0x31, 0x0e, 0x0e, 0xdd, 0x47, 0xdb, 0x6f, 0x72, },
292     { 0xfd, 0x67, 0xdc, 0x93, 0xc5, 0x39, 0xf8    292     { 0xfd, 0x67, 0xdc, 0x93, 0xc5, 0x39, 0xf8, 0x74, },
293     { 0x5a, 0x4f, 0xa9, 0xd9, 0x09, 0x80, 0x6c    293     { 0x5a, 0x4f, 0xa9, 0xd9, 0x09, 0x80, 0x6c, 0x0d, },
294     { 0x2d, 0x7e, 0xfb, 0xd7, 0x96, 0x66, 0x67    294     { 0x2d, 0x7e, 0xfb, 0xd7, 0x96, 0x66, 0x67, 0x85, },
295     { 0xb7, 0x87, 0x71, 0x27, 0xe0, 0x94, 0x27    295     { 0xb7, 0x87, 0x71, 0x27, 0xe0, 0x94, 0x27, 0xcf, },
296     { 0x8d, 0xa6, 0x99, 0xcd, 0x64, 0x55, 0x76    296     { 0x8d, 0xa6, 0x99, 0xcd, 0x64, 0x55, 0x76, 0x18, },
297     { 0xce, 0xe3, 0xfe, 0x58, 0x6e, 0x46, 0xc9    297     { 0xce, 0xe3, 0xfe, 0x58, 0x6e, 0x46, 0xc9, 0xcb, },
298     { 0x37, 0xd1, 0x01, 0x8b, 0xf5, 0x00, 0x02    298     { 0x37, 0xd1, 0x01, 0x8b, 0xf5, 0x00, 0x02, 0xab, },
299     { 0x62, 0x24, 0x93, 0x9a, 0x79, 0xf5, 0xf5    299     { 0x62, 0x24, 0x93, 0x9a, 0x79, 0xf5, 0xf5, 0x93, },
300     { 0xb0, 0xe4, 0xa9, 0x0b, 0xdf, 0x82, 0x00    300     { 0xb0, 0xe4, 0xa9, 0x0b, 0xdf, 0x82, 0x00, 0x9e, },
301     { 0xf3, 0xb9, 0xdd, 0x94, 0xc5, 0xbb, 0x5d    301     { 0xf3, 0xb9, 0xdd, 0x94, 0xc5, 0xbb, 0x5d, 0x7a, },
302     { 0xa7, 0xad, 0x6b, 0x22, 0x46, 0x2f, 0xb3    302     { 0xa7, 0xad, 0x6b, 0x22, 0x46, 0x2f, 0xb3, 0xf4, },
303     { 0xfb, 0xe5, 0x0e, 0x86, 0xbc, 0x8f, 0x1e    303     { 0xfb, 0xe5, 0x0e, 0x86, 0xbc, 0x8f, 0x1e, 0x75, },
304     { 0x90, 0x3d, 0x84, 0xc0, 0x27, 0x56, 0xea    304     { 0x90, 0x3d, 0x84, 0xc0, 0x27, 0x56, 0xea, 0x14, },
305     { 0xee, 0xf2, 0x7a, 0x8e, 0x90, 0xca, 0x23    305     { 0xee, 0xf2, 0x7a, 0x8e, 0x90, 0xca, 0x23, 0xf7, },
306     { 0xe5, 0x45, 0xbe, 0x49, 0x61, 0xca, 0x29    306     { 0xe5, 0x45, 0xbe, 0x49, 0x61, 0xca, 0x29, 0xa1, },
307     { 0xdb, 0x9b, 0xc2, 0x57, 0x7f, 0xcc, 0x2a    307     { 0xdb, 0x9b, 0xc2, 0x57, 0x7f, 0xcc, 0x2a, 0x3f, },
308     { 0x94, 0x47, 0xbe, 0x2c, 0xf5, 0xe9, 0x9a    308     { 0x94, 0x47, 0xbe, 0x2c, 0xf5, 0xe9, 0x9a, 0x69, },
309     { 0x9c, 0xd3, 0x8d, 0x96, 0xf0, 0xb3, 0xc1    309     { 0x9c, 0xd3, 0x8d, 0x96, 0xf0, 0xb3, 0xc1, 0x4b, },
310     { 0xbd, 0x61, 0x79, 0xa7, 0x1d, 0xc9, 0x6d    310     { 0xbd, 0x61, 0x79, 0xa7, 0x1d, 0xc9, 0x6d, 0xbb, },
311     { 0x98, 0xee, 0xa2, 0x1a, 0xf2, 0x5c, 0xd6    311     { 0x98, 0xee, 0xa2, 0x1a, 0xf2, 0x5c, 0xd6, 0xbe, },
312     { 0xc7, 0x67, 0x3b, 0x2e, 0xb0, 0xcb, 0xf2    312     { 0xc7, 0x67, 0x3b, 0x2e, 0xb0, 0xcb, 0xf2, 0xd0, },
313     { 0x88, 0x3e, 0xa3, 0xe3, 0x95, 0x67, 0x53    313     { 0x88, 0x3e, 0xa3, 0xe3, 0x95, 0x67, 0x53, 0x93, },
314     { 0xc8, 0xce, 0x5c, 0xcd, 0x8c, 0x03, 0x0c    314     { 0xc8, 0xce, 0x5c, 0xcd, 0x8c, 0x03, 0x0c, 0xa8, },
315     { 0x94, 0xaf, 0x49, 0xf6, 0xc6, 0x50, 0xad    315     { 0x94, 0xaf, 0x49, 0xf6, 0xc6, 0x50, 0xad, 0xb8, },
316     { 0xea, 0xb8, 0x85, 0x8a, 0xde, 0x92, 0xe1    316     { 0xea, 0xb8, 0x85, 0x8a, 0xde, 0x92, 0xe1, 0xbc, },
317     { 0xf3, 0x15, 0xbb, 0x5b, 0xb8, 0x35, 0xd8    317     { 0xf3, 0x15, 0xbb, 0x5b, 0xb8, 0x35, 0xd8, 0x17, },
318     { 0xad, 0xcf, 0x6b, 0x07, 0x63, 0x61, 0x2e    318     { 0xad, 0xcf, 0x6b, 0x07, 0x63, 0x61, 0x2e, 0x2f, },
319     { 0xa5, 0xc9, 0x1d, 0xa7, 0xac, 0xaa, 0x4d    319     { 0xa5, 0xc9, 0x1d, 0xa7, 0xac, 0xaa, 0x4d, 0xde, },
320     { 0x71, 0x65, 0x95, 0x87, 0x66, 0x50, 0xa2    320     { 0x71, 0x65, 0x95, 0x87, 0x66, 0x50, 0xa2, 0xa6, },
321     { 0x28, 0xef, 0x49, 0x5c, 0x53, 0xa3, 0x87    321     { 0x28, 0xef, 0x49, 0x5c, 0x53, 0xa3, 0x87, 0xad, },
322     { 0x42, 0xc3, 0x41, 0xd8, 0xfa, 0x92, 0xd8    322     { 0x42, 0xc3, 0x41, 0xd8, 0xfa, 0x92, 0xd8, 0x32, },
323     { 0xce, 0x7c, 0xf2, 0x72, 0x2f, 0x51, 0x27    323     { 0xce, 0x7c, 0xf2, 0x72, 0x2f, 0x51, 0x27, 0x71, },
324     { 0xe3, 0x78, 0x59, 0xf9, 0x46, 0x23, 0xf3    324     { 0xe3, 0x78, 0x59, 0xf9, 0x46, 0x23, 0xf3, 0xa7, },
325     { 0x38, 0x12, 0x05, 0xbb, 0x1a, 0xb0, 0xe0    325     { 0x38, 0x12, 0x05, 0xbb, 0x1a, 0xb0, 0xe0, 0x12, },
326     { 0xae, 0x97, 0xa1, 0x0f, 0xd4, 0x34, 0xe0    326     { 0xae, 0x97, 0xa1, 0x0f, 0xd4, 0x34, 0xe0, 0x15, },
327     { 0xb4, 0xa3, 0x15, 0x08, 0xbe, 0xff, 0x4d    327     { 0xb4, 0xa3, 0x15, 0x08, 0xbe, 0xff, 0x4d, 0x31, },
328     { 0x81, 0x39, 0x62, 0x29, 0xf0, 0x90, 0x79    328     { 0x81, 0x39, 0x62, 0x29, 0xf0, 0x90, 0x79, 0x02, },
329     { 0x4d, 0x0c, 0xf4, 0x9e, 0xe5, 0xd4, 0xdc    329     { 0x4d, 0x0c, 0xf4, 0x9e, 0xe5, 0xd4, 0xdc, 0xca, },
330     { 0x5c, 0x73, 0x33, 0x6a, 0x76, 0xd8, 0xbf    330     { 0x5c, 0x73, 0x33, 0x6a, 0x76, 0xd8, 0xbf, 0x9a, },
331     { 0xd0, 0xa7, 0x04, 0x53, 0x6b, 0xa9, 0x3e    331     { 0xd0, 0xa7, 0x04, 0x53, 0x6b, 0xa9, 0x3e, 0x0e, },
332     { 0x92, 0x59, 0x58, 0xfc, 0xd6, 0x42, 0x0c    332     { 0x92, 0x59, 0x58, 0xfc, 0xd6, 0x42, 0x0c, 0xad, },
333     { 0xa9, 0x15, 0xc2, 0x9b, 0xc8, 0x06, 0x73    333     { 0xa9, 0x15, 0xc2, 0x9b, 0xc8, 0x06, 0x73, 0x18, },
334     { 0x95, 0x2b, 0x79, 0xf3, 0xbc, 0x0a, 0xa6    334     { 0x95, 0x2b, 0x79, 0xf3, 0xbc, 0x0a, 0xa6, 0xd4, },
335     { 0xf2, 0x1d, 0xf2, 0xe4, 0x1d, 0x45, 0x35    335     { 0xf2, 0x1d, 0xf2, 0xe4, 0x1d, 0x45, 0x35, 0xf9, },
336     { 0x87, 0x57, 0x75, 0x19, 0x04, 0x8f, 0x53    336     { 0x87, 0x57, 0x75, 0x19, 0x04, 0x8f, 0x53, 0xa9, },
337     { 0x10, 0xa5, 0x6c, 0xf5, 0xdf, 0xcd, 0x9a    337     { 0x10, 0xa5, 0x6c, 0xf5, 0xdf, 0xcd, 0x9a, 0xdb, },
338     { 0xeb, 0x75, 0x09, 0x5c, 0xcd, 0x98, 0x6c    338     { 0xeb, 0x75, 0x09, 0x5c, 0xcd, 0x98, 0x6c, 0xd0, },
339     { 0x51, 0xa9, 0xcb, 0x9e, 0xcb, 0xa3, 0x12    339     { 0x51, 0xa9, 0xcb, 0x9e, 0xcb, 0xa3, 0x12, 0xe6, },
340     { 0x96, 0xaf, 0xad, 0xfc, 0x2c, 0xe6, 0x66    340     { 0x96, 0xaf, 0xad, 0xfc, 0x2c, 0xe6, 0x66, 0xc7, },
341     { 0x72, 0xfe, 0x52, 0x97, 0x5a, 0x43, 0x64    341     { 0x72, 0xfe, 0x52, 0x97, 0x5a, 0x43, 0x64, 0xee, },
342     { 0x5a, 0x16, 0x45, 0xb2, 0x76, 0xd5, 0x92    342     { 0x5a, 0x16, 0x45, 0xb2, 0x76, 0xd5, 0x92, 0xa1, },
343     { 0xb2, 0x74, 0xcb, 0x8e, 0xbf, 0x87, 0x87    343     { 0xb2, 0x74, 0xcb, 0x8e, 0xbf, 0x87, 0x87, 0x0a, },
344     { 0x6f, 0x9b, 0xb4, 0x20, 0x3d, 0xe7, 0xb3    344     { 0x6f, 0x9b, 0xb4, 0x20, 0x3d, 0xe7, 0xb3, 0x81, },
345     { 0xea, 0xec, 0xb2, 0xa3, 0x0b, 0x22, 0xa8    345     { 0xea, 0xec, 0xb2, 0xa3, 0x0b, 0x22, 0xa8, 0x7f, },
346     { 0x99, 0x24, 0xa4, 0x3c, 0xc1, 0x31, 0x57    346     { 0x99, 0x24, 0xa4, 0x3c, 0xc1, 0x31, 0x57, 0x24, },
347     { 0xbd, 0x83, 0x8d, 0x3a, 0xaf, 0xbf, 0x8d    347     { 0xbd, 0x83, 0x8d, 0x3a, 0xaf, 0xbf, 0x8d, 0xb7, },
348     { 0x0b, 0x1a, 0x2a, 0x32, 0x65, 0xd5, 0x1a    348     { 0x0b, 0x1a, 0x2a, 0x32, 0x65, 0xd5, 0x1a, 0xea, },
349     { 0x13, 0x50, 0x79, 0xa3, 0x23, 0x1c, 0xe6    349     { 0x13, 0x50, 0x79, 0xa3, 0x23, 0x1c, 0xe6, 0x60, },
350     { 0x93, 0x2b, 0x28, 0x46, 0xe4, 0xd7, 0x06    350     { 0x93, 0x2b, 0x28, 0x46, 0xe4, 0xd7, 0x06, 0x66, },
351     { 0xe1, 0x91, 0x5f, 0x5c, 0xb1, 0xec, 0xa4    351     { 0xe1, 0x91, 0x5f, 0x5c, 0xb1, 0xec, 0xa4, 0x6c, },
352     { 0xf3, 0x25, 0x96, 0x5c, 0xa1, 0x6d, 0x62    352     { 0xf3, 0x25, 0x96, 0x5c, 0xa1, 0x6d, 0x62, 0x9f, },
353     { 0x57, 0x5f, 0xf2, 0x8e, 0x60, 0x38, 0x1b    353     { 0x57, 0x5f, 0xf2, 0x8e, 0x60, 0x38, 0x1b, 0xe5, },
354     { 0x72, 0x45, 0x06, 0xeb, 0x4c, 0x32, 0x8a    354     { 0x72, 0x45, 0x06, 0xeb, 0x4c, 0x32, 0x8a, 0x95, }
355   };                                              355   };
356   /* clang-format on */                           356   /* clang-format on */
357                                                   357 
358   unsigned char in[64];                           358   unsigned char in[64];
359   struct sipkey k;                                359   struct sipkey k;
360   size_t i;                                       360   size_t i;
361                                                   361 
362   sip_tokey(&k, "\000\001\002\003\004\005\006\    362   sip_tokey(&k, "\000\001\002\003\004\005\006\007\010\011"
363                 "\012\013\014\015\016\017");      363                 "\012\013\014\015\016\017");
364                                                   364 
365   for (i = 0; i < sizeof in; ++i) {               365   for (i = 0; i < sizeof in; ++i) {
366     in[i] = (unsigned char)i;                     366     in[i] = (unsigned char)i;
367                                                   367 
368     if (siphash24(in, i, &k) != SIP_U8TO64_LE(    368     if (siphash24(in, i, &k) != SIP_U8TO64_LE(vectors[i]))
369       return 0;                                   369       return 0;
370   }                                               370   }
371                                                   371 
372   return 1;                                       372   return 1;
373 } /* sip24_valid() */                             373 } /* sip24_valid() */
374                                                   374 
375 #ifdef SIPHASH_MAIN                               375 #ifdef SIPHASH_MAIN
376                                                   376 
377 #  include <stdio.h>                              377 #  include <stdio.h>
378                                                   378 
379 int                                               379 int
380 main(void) {                                      380 main(void) {
381   const int ok = sip24_valid();                   381   const int ok = sip24_valid();
382                                                   382 
383   if (ok)                                         383   if (ok)
384     puts("OK");                                   384     puts("OK");
385   else                                            385   else
386     puts("FAIL");                                 386     puts("FAIL");
387                                                   387 
388   return ! ok;                                    388   return ! ok;
389 } /* main() */                                    389 } /* main() */
390                                                   390 
391 #endif /* SIPHASH_MAIN */                         391 #endif /* SIPHASH_MAIN */
392                                                   392 
393 #endif /* SIPHASH_H */                            393 #endif /* SIPHASH_H */
394                                                   394