diff options
Diffstat (limited to 'wsutil/crc32.c')
| -rw-r--r-- | wsutil/crc32.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/wsutil/crc32.c b/wsutil/crc32.c index 142a457f44..1ce43eb9c1 100644 --- a/wsutil/crc32.c +++ b/wsutil/crc32.c @@ -296,6 +296,75 @@ static const guint32 crc32_0AA725CF_reverse[] = { 0x53E8BE29U, 0x9D422BE7U, 0x29F45F14U, 0xE75ECADAU }; +/* This table was compiled using the polynom: 0x5D6DCB */ +static const guint32 crc32_5D6DCB[] = +{ + 0x00000000, 0x005d6dcb, 0x00badb96, 0x00e7b65d, + 0x0028dae7, 0x0075b72c, 0x00920171, 0x00cf6cba, + 0x0051b5ce, 0x000cd805, 0x00eb6e58, 0x00b60393, + 0x00796f29, 0x002402e2, 0x00c3b4bf, 0x009ed974, + 0x00a36b9c, 0x00fe0657, 0x0019b00a, 0x0044ddc1, + 0x008bb17b, 0x00d6dcb0, 0x00316aed, 0x006c0726, + 0x00f2de52, 0x00afb399, 0x004805c4, 0x0015680f, + 0x00da04b5, 0x0087697e, 0x0060df23, 0x003db2e8, + 0x001bbaf3, 0x0046d738, 0x00a16165, 0x00fc0cae, + 0x00336014, 0x006e0ddf, 0x0089bb82, 0x00d4d649, + 0x004a0f3d, 0x001762f6, 0x00f0d4ab, 0x00adb960, + 0x0062d5da, 0x003fb811, 0x00d80e4c, 0x00856387, + 0x00b8d16f, 0x00e5bca4, 0x00020af9, 0x005f6732, + 0x00900b88, 0x00cd6643, 0x002ad01e, 0x0077bdd5, + 0x00e964a1, 0x00b4096a, 0x0053bf37, 0x000ed2fc, + 0x00c1be46, 0x009cd38d, 0x007b65d0, 0x0026081b, + 0x003775e6, 0x006a182d, 0x008dae70, 0x00d0c3bb, + 0x001faf01, 0x0042c2ca, 0x00a57497, 0x00f8195c, + 0x0066c028, 0x003bade3, 0x00dc1bbe, 0x00817675, + 0x004e1acf, 0x00137704, 0x00f4c159, 0x00a9ac92, + 0x00941e7a, 0x00c973b1, 0x002ec5ec, 0x0073a827, + 0x00bcc49d, 0x00e1a956, 0x00061f0b, 0x005b72c0, + 0x00c5abb4, 0x0098c67f, 0x007f7022, 0x00221de9, + 0x00ed7153, 0x00b01c98, 0x0057aac5, 0x000ac70e, + 0x002ccf15, 0x0071a2de, 0x00961483, 0x00cb7948, + 0x000415f2, 0x00597839, 0x00bece64, 0x00e3a3af, + 0x007d7adb, 0x00201710, 0x00c7a14d, 0x009acc86, + 0x0055a03c, 0x0008cdf7, 0x00ef7baa, 0x00b21661, + 0x008fa489, 0x00d2c942, 0x00357f1f, 0x006812d4, + 0x00a77e6e, 0x00fa13a5, 0x001da5f8, 0x0040c833, + 0x00de1147, 0x00837c8c, 0x0064cad1, 0x0039a71a, + 0x00f6cba0, 0x00aba66b, 0x004c1036, 0x00117dfd, + 0x006eebcc, 0x00338607, 0x00d4305a, 0x00895d91, + 0x0046312b, 0x001b5ce0, 0x00fceabd, 0x00a18776, + 0x003f5e02, 0x006233c9, 0x00858594, 0x00d8e85f, + 0x001784e5, 0x004ae92e, 0x00ad5f73, 0x00f032b8, + 0x00cd8050, 0x0090ed9b, 0x00775bc6, 0x002a360d, + 0x00e55ab7, 0x00b8377c, 0x005f8121, 0x0002ecea, + 0x009c359e, 0x00c15855, 0x0026ee08, 0x007b83c3, + 0x00b4ef79, 0x00e982b2, 0x000e34ef, 0x00535924, + 0x0075513f, 0x00283cf4, 0x00cf8aa9, 0x0092e762, + 0x005d8bd8, 0x0000e613, 0x00e7504e, 0x00ba3d85, + 0x0024e4f1, 0x0079893a, 0x009e3f67, 0x00c352ac, + 0x000c3e16, 0x005153dd, 0x00b6e580, 0x00eb884b, + 0x00d63aa3, 0x008b5768, 0x006ce135, 0x00318cfe, + 0x00fee044, 0x00a38d8f, 0x00443bd2, 0x00195619, + 0x00878f6d, 0x00dae2a6, 0x003d54fb, 0x00603930, + 0x00af558a, 0x00f23841, 0x00158e1c, 0x0048e3d7, + 0x00599e2a, 0x0004f3e1, 0x00e345bc, 0x00be2877, + 0x007144cd, 0x002c2906, 0x00cb9f5b, 0x0096f290, + 0x00082be4, 0x0055462f, 0x00b2f072, 0x00ef9db9, + 0x0020f103, 0x007d9cc8, 0x009a2a95, 0x00c7475e, + 0x00faf5b6, 0x00a7987d, 0x00402e20, 0x001d43eb, + 0x00d22f51, 0x008f429a, 0x0068f4c7, 0x0035990c, + 0x00ab4078, 0x00f62db3, 0x00119bee, 0x004cf625, + 0x00839a9f, 0x00def754, 0x00394109, 0x00642cc2, + 0x004224d9, 0x001f4912, 0x00f8ff4f, 0x00a59284, + 0x006afe3e, 0x003793f5, 0x00d025a8, 0x008d4863, + 0x00139117, 0x004efcdc, 0x00a94a81, 0x00f4274a, + 0x003b4bf0, 0x0066263b, 0x00819066, 0x00dcfdad, + 0x00e14f45, 0x00bc228e, 0x005b94d3, 0x0006f918, + 0x00c995a2, 0x0094f869, 0x00734e34, 0x002e23ff, + 0x00b0fa8b, 0x00ed9740, 0x000a211d, 0x00574cd6, + 0x0098206c, 0x00c54da7, 0x0022fbfa, 0x007f9631 +}; + guint32 crc32c_table_lookup (guchar pos) { @@ -374,6 +443,23 @@ crc32_0x0AA725CF_seed(const guint8 *buf, guint len, guint32 seed) return (guint32)crc32; } +guint32 +crc32_0x5D6DCB_seed(const guint8 *buf, guint len, guint32 seed) +{ + guint32 crc = seed; + if (len > 0) + { + while (len-- > 0) + { + guint8 data = *buf++; + /* XOR data with CRC2, look up result, then XOR that with CRC; */ + crc = crc32_5D6DCB[((crc >> 16) ^ data) & 0xff] ^ (crc << 8); + } + } + return (crc & 0x00ffffff); +} + + /* * Editor modelines - http://www.wireshark.org/tools/modelines.html * |