diff options
Diffstat (limited to 'wsutil/crc16.c')
| -rw-r--r-- | wsutil/crc16.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/wsutil/crc16.c b/wsutil/crc16.c index 2ff576c200..3fc09f52ea 100644 --- a/wsutil/crc16.c +++ b/wsutil/crc16.c @@ -293,6 +293,43 @@ static const guint crc16_precompiled_3D65_reverse[] = 0x91AF, 0xA7F1, 0xFD13, 0xCB4D, 0x48D7, 0x7E89, 0x246B, 0x1235 }; +/* This table was compiled using the polynom: 0x080F */ +static const guint crc16_precompiled_080F[] = +{ + 0x0000, 0x080F, 0x101E, 0x1811, 0x203C, 0x2833, 0x3022, 0x382D, + 0x4078, 0x4877, 0x5066, 0x5869, 0x6044, 0x684B, 0x705A, 0x7855, + 0x80F0, 0x88FF, 0x90EE, 0x98E1, 0xA0CC, 0xA8C3, 0xB0D2, 0xB8DD, + 0xC088, 0xC887, 0xD096, 0xD899, 0xE0B4, 0xE8BB, 0xF0AA, 0xF8A5, + 0x09EF, 0x01E0, 0x19F1, 0x11FE, 0x29D3, 0x21DC, 0x39CD, 0x31C2, + 0x4997, 0x4198, 0x5989, 0x5186, 0x69AB, 0x61A4, 0x79B5, 0x71BA, + 0x891F, 0x8110, 0x9901, 0x910E, 0xA923, 0xA12C, 0xB93D, 0xB132, + 0xC967, 0xC168, 0xD979, 0xD176, 0xE95B, 0xE154, 0xF945, 0xF14A, + 0x13DE, 0x1BD1, 0x03C0, 0x0BCF, 0x33E2, 0x3BED, 0x23FC, 0x2BF3, + 0x53A6, 0x5BA9, 0x43B8, 0x4BB7, 0x739A, 0x7B95, 0x6384, 0x6B8B, + 0x932E, 0x9B21, 0x8330, 0x8B3F, 0xB312, 0xBB1D, 0xA30C, 0xAB03, + 0xD356, 0xDB59, 0xC348, 0xCB47, 0xF36A, 0xFB65, 0xE374, 0xEB7B, + 0x1A31, 0x123E, 0x0A2F, 0x0220, 0x3A0D, 0x3202, 0x2A13, 0x221C, + 0x5A49, 0x5246, 0x4A57, 0x4258, 0x7A75, 0x727A, 0x6A6B, 0x6264, + 0x9AC1, 0x92CE, 0x8ADF, 0x82D0, 0xBAFD, 0xB2F2, 0xAAE3, 0xA2EC, + 0xDAB9, 0xD2B6, 0xCAA7, 0xC2A8, 0xFA85, 0xF28A, 0xEA9B, 0xE294, + 0x27BC, 0x2FB3, 0x37A2, 0x3FAD, 0x0780, 0x0F8F, 0x179E, 0x1F91, + 0x67C4, 0x6FCB, 0x77DA, 0x7FD5, 0x47F8, 0x4FF7, 0x57E6, 0x5FE9, + 0xA74C, 0xAF43, 0xB752, 0xBF5D, 0x8770, 0x8F7F, 0x976E, 0x9F61, + 0xE734, 0xEF3B, 0xF72A, 0xFF25, 0xC708, 0xCF07, 0xD716, 0xDF19, + 0x2E53, 0x265C, 0x3E4D, 0x3642, 0x0E6F, 0x0660, 0x1E71, 0x167E, + 0x6E2B, 0x6624, 0x7E35, 0x763A, 0x4E17, 0x4618, 0x5E09, 0x5606, + 0xAEA3, 0xA6AC, 0xBEBD, 0xB6B2, 0x8E9F, 0x8690, 0x9E81, 0x968E, + 0xEEDB, 0xE6D4, 0xFEC5, 0xF6CA, 0xCEE7, 0xC6E8, 0xDEF9, 0xD6F6, + 0x3462, 0x3C6D, 0x247C, 0x2C73, 0x145E, 0x1C51, 0x0440, 0x0C4F, + 0x741A, 0x7C15, 0x6404, 0x6C0B, 0x5426, 0x5C29, 0x4438, 0x4C37, + 0xB492, 0xBC9D, 0xA48C, 0xAC83, 0x94AE, 0x9CA1, 0x84B0, 0x8CBF, + 0xF4EA, 0xFCE5, 0xE4F4, 0xECFB, 0xD4D6, 0xDCD9, 0xC4C8, 0xCCC7, + 0x3D8D, 0x3582, 0x2D93, 0x259C, 0x1DB1, 0x15BE, 0x0DAF, 0x05A0, + 0x7DF5, 0x75FA, 0x6DEB, 0x65E4, 0x5DC9, 0x55C6, 0x4DD7, 0x45D8, + 0xBD7D, 0xB572, 0xAD63, 0xA56C, 0x9D41, 0x954E, 0x8D5F, 0x8550, + 0xFD05, 0xF50A, 0xED1B, 0xE514, 0xDD39, 0xD536, 0xCD27, 0xC528 +}; + static const guint16 crc16_ccitt_start = 0xFFFF; static const guint16 crc16_ccitt_xorout = 0xFFFF; @@ -374,6 +411,22 @@ guint16 crc16_0x3D65_seed(const guint8 *buf, guint len, guint16 seed) return crc16_reflected(buf, len, seed, crc16_precompiled_3D65_reverse); } +guint16 crc16_0x080F_seed(const guint8 *buf, guint len, guint16 seed) +{ + guint16 crc = seed; + + if (len > 0) + { + while (len-- > 0) + { + guint8 data = *buf++; + crc = crc16_precompiled_080F[((crc >> 8) ^ data)] ^ (crc << 8); + } + } + + return crc; +} + /* * Editor modelines - http://www.wireshark.org/tools/modelines.html * |