Revision 9e2b7fa2df4365e99934901da4fb4af52d81e820 authored by Martin Willi on 06 November 2020, 07:30:30 UTC, committed by Jakub Kicinski on 12 November 2020, 15:47:06 UTC
VRF devices use an optimized direct path on output if a default qdisc is involved, calling Netfilter hooks directly. This path, however, does not consider Netfilter rules completing asynchronously, such as with NFQUEUE. The Netfilter okfn() is called for asynchronously accepted packets, but the VRF never passes that packet down the stack to send it out over the slave device. Using the slower redirect path for this seems not feasible, as we do not know beforehand if a Netfilter hook has asynchronously completing rules. Fix the use of asynchronously completing Netfilter rules in OUTPUT and POSTROUTING by using a special completion function that additionally calls dst_output() to pass the packet down the stack. Also, slightly adjust the use of nf_reset_ct() so that is called in the asynchronous case, too. Fixes: dcdd43c41e60 ("net: vrf: performance improvements for IPv4") Fixes: a9ec54d1b0cd ("net: vrf: performance improvements for IPv6") Signed-off-by: Martin Willi <martin@strongswan.org> Link: https://lore.kernel.org/r/20201106073030.3974927-1-martin@strongswan.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
1 parent 52755b6
cast5_generic.c
// SPDX-License-Identifier: GPL-2.0-or-later
/* Kernel cryptographic api.
* cast5.c - Cast5 cipher algorithm (rfc2144).
*
* Derived from GnuPG implementation of cast5.
*
* Major Changes.
* Complete conformance to rfc2144.
* Supports key size from 40 to 128 bits.
*
* Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
* Copyright (C) 2003 Kartikey Mahendra Bhatt <kartik_me@hotmail.com>.
*/
#include <asm/byteorder.h>
#include <linux/init.h>
#include <linux/crypto.h>
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/types.h>
#include <crypto/cast5.h>
static const u32 s5[256] = {
0x7ec90c04, 0x2c6e74b9, 0x9b0e66df, 0xa6337911, 0xb86a7fff,
0x1dd358f5, 0x44dd9d44, 0x1731167f,
0x08fbf1fa, 0xe7f511cc, 0xd2051b00, 0x735aba00, 0x2ab722d8,
0x386381cb, 0xacf6243a, 0x69befd7a,
0xe6a2e77f, 0xf0c720cd, 0xc4494816, 0xccf5c180, 0x38851640,
0x15b0a848, 0xe68b18cb, 0x4caadeff,
0x5f480a01, 0x0412b2aa, 0x259814fc, 0x41d0efe2, 0x4e40b48d,
0x248eb6fb, 0x8dba1cfe, 0x41a99b02,
0x1a550a04, 0xba8f65cb, 0x7251f4e7, 0x95a51725, 0xc106ecd7,
0x97a5980a, 0xc539b9aa, 0x4d79fe6a,
0xf2f3f763, 0x68af8040, 0xed0c9e56, 0x11b4958b, 0xe1eb5a88,
0x8709e6b0, 0xd7e07156, 0x4e29fea7,
0x6366e52d, 0x02d1c000, 0xc4ac8e05, 0x9377f571, 0x0c05372a,
0x578535f2, 0x2261be02, 0xd642a0c9,
0xdf13a280, 0x74b55bd2, 0x682199c0, 0xd421e5ec, 0x53fb3ce8,
0xc8adedb3, 0x28a87fc9, 0x3d959981,
0x5c1ff900, 0xfe38d399, 0x0c4eff0b, 0x062407ea, 0xaa2f4fb1,
0x4fb96976, 0x90c79505, 0xb0a8a774,
0xef55a1ff, 0xe59ca2c2, 0xa6b62d27, 0xe66a4263, 0xdf65001f,
0x0ec50966, 0xdfdd55bc, 0x29de0655,
0x911e739a, 0x17af8975, 0x32c7911c, 0x89f89468, 0x0d01e980,
0x524755f4, 0x03b63cc9, 0x0cc844b2,
0xbcf3f0aa, 0x87ac36e9, 0xe53a7426, 0x01b3d82b, 0x1a9e7449,
0x64ee2d7e, 0xcddbb1da, 0x01c94910,
0xb868bf80, 0x0d26f3fd, 0x9342ede7, 0x04a5c284, 0x636737b6,
0x50f5b616, 0xf24766e3, 0x8eca36c1,
0x136e05db, 0xfef18391, 0xfb887a37, 0xd6e7f7d4, 0xc7fb7dc9,
0x3063fcdf, 0xb6f589de, 0xec2941da,
0x26e46695, 0xb7566419, 0xf654efc5, 0xd08d58b7, 0x48925401,
0xc1bacb7f, 0xe5ff550f, 0xb6083049,
0x5bb5d0e8, 0x87d72e5a, 0xab6a6ee1, 0x223a66ce, 0xc62bf3cd,
0x9e0885f9, 0x68cb3e47, 0x086c010f,
0xa21de820, 0xd18b69de, 0xf3f65777, 0xfa02c3f6, 0x407edac3,
0xcbb3d550, 0x1793084d, 0xb0d70eba,
0x0ab378d5, 0xd951fb0c, 0xded7da56, 0x4124bbe4, 0x94ca0b56,
0x0f5755d1, 0xe0e1e56e, 0x6184b5be,
0x580a249f, 0x94f74bc0, 0xe327888e, 0x9f7b5561, 0xc3dc0280,
0x05687715, 0x646c6bd7, 0x44904db3,
0x66b4f0a3, 0xc0f1648a, 0x697ed5af, 0x49e92ff6, 0x309e374f,
0x2cb6356a, 0x85808573, 0x4991f840,
0x76f0ae02, 0x083be84d, 0x28421c9a, 0x44489406, 0x736e4cb8,
0xc1092910, 0x8bc95fc6, 0x7d869cf4,
0x134f616f, 0x2e77118d, 0xb31b2be1, 0xaa90b472, 0x3ca5d717,
0x7d161bba, 0x9cad9010, 0xaf462ba2,
0x9fe459d2, 0x45d34559, 0xd9f2da13, 0xdbc65487, 0xf3e4f94e,
0x176d486f, 0x097c13ea, 0x631da5c7,
0x445f7382, 0x175683f4, 0xcdc66a97, 0x70be0288, 0xb3cdcf72,
0x6e5dd2f3, 0x20936079, 0x459b80a5,
0xbe60e2db, 0xa9c23101, 0xeba5315c, 0x224e42f2, 0x1c5c1572,
0xf6721b2c, 0x1ad2fff3, 0x8c25404e,
0x324ed72f, 0x4067b7fd, 0x0523138e, 0x5ca3bc78, 0xdc0fd66e,
0x75922283, 0x784d6b17, 0x58ebb16e,
0x44094f85, 0x3f481d87, 0xfcfeae7b, 0x77b5ff76, 0x8c2302bf,
0xaaf47556, 0x5f46b02a, 0x2b092801,
0x3d38f5f7, 0x0ca81f36, 0x52af4a8a, 0x66d5e7c0, 0xdf3b0874,
0x95055110, 0x1b5ad7a8, 0xf61ed5ad,
0x6cf6e479, 0x20758184, 0xd0cefa65, 0x88f7be58, 0x4a046826,
0x0ff6f8f3, 0xa09c7f70, 0x5346aba0,
0x5ce96c28, 0xe176eda3, 0x6bac307f, 0x376829d2, 0x85360fa9,
0x17e3fe2a, 0x24b79767, 0xf5a96b20,
0xd6cd2595, 0x68ff1ebf, 0x7555442c, 0xf19f06be, 0xf9e0659a,
0xeeb9491d, 0x34010718, 0xbb30cab8,
0xe822fe15, 0x88570983, 0x750e6249, 0xda627e55, 0x5e76ffa8,
0xb1534546, 0x6d47de08, 0xefe9e7d4
};
static const u32 s6[256] = {
0xf6fa8f9d, 0x2cac6ce1, 0x4ca34867, 0xe2337f7c, 0x95db08e7,
0x016843b4, 0xeced5cbc, 0x325553ac,
0xbf9f0960, 0xdfa1e2ed, 0x83f0579d, 0x63ed86b9, 0x1ab6a6b8,
0xde5ebe39, 0xf38ff732, 0x8989b138,
0x33f14961, 0xc01937bd, 0xf506c6da, 0xe4625e7e, 0xa308ea99,
0x4e23e33c, 0x79cbd7cc, 0x48a14367,
0xa3149619, 0xfec94bd5, 0xa114174a, 0xeaa01866, 0xa084db2d,
0x09a8486f, 0xa888614a, 0x2900af98,
0x01665991, 0xe1992863, 0xc8f30c60, 0x2e78ef3c, 0xd0d51932,
0xcf0fec14, 0xf7ca07d2, 0xd0a82072,
0xfd41197e, 0x9305a6b0, 0xe86be3da, 0x74bed3cd, 0x372da53c,
0x4c7f4448, 0xdab5d440, 0x6dba0ec3,
0x083919a7, 0x9fbaeed9, 0x49dbcfb0, 0x4e670c53, 0x5c3d9c01,
0x64bdb941, 0x2c0e636a, 0xba7dd9cd,
0xea6f7388, 0xe70bc762, 0x35f29adb, 0x5c4cdd8d, 0xf0d48d8c,
0xb88153e2, 0x08a19866, 0x1ae2eac8,
0x284caf89, 0xaa928223, 0x9334be53, 0x3b3a21bf, 0x16434be3,
0x9aea3906, 0xefe8c36e, 0xf890cdd9,
0x80226dae, 0xc340a4a3, 0xdf7e9c09, 0xa694a807, 0x5b7c5ecc,
0x221db3a6, 0x9a69a02f, 0x68818a54,
0xceb2296f, 0x53c0843a, 0xfe893655, 0x25bfe68a, 0xb4628abc,
0xcf222ebf, 0x25ac6f48, 0xa9a99387,
0x53bddb65, 0xe76ffbe7, 0xe967fd78, 0x0ba93563, 0x8e342bc1,
0xe8a11be9, 0x4980740d, 0xc8087dfc,
0x8de4bf99, 0xa11101a0, 0x7fd37975, 0xda5a26c0, 0xe81f994f,
0x9528cd89, 0xfd339fed, 0xb87834bf,
0x5f04456d, 0x22258698, 0xc9c4c83b, 0x2dc156be, 0x4f628daa,
0x57f55ec5, 0xe2220abe, 0xd2916ebf,
0x4ec75b95, 0x24f2c3c0, 0x42d15d99, 0xcd0d7fa0, 0x7b6e27ff,
0xa8dc8af0, 0x7345c106, 0xf41e232f,
0x35162386, 0xe6ea8926, 0x3333b094, 0x157ec6f2, 0x372b74af,
0x692573e4, 0xe9a9d848, 0xf3160289,
0x3a62ef1d, 0xa787e238, 0xf3a5f676, 0x74364853, 0x20951063,
0x4576698d, 0xb6fad407, 0x592af950,
0x36f73523, 0x4cfb6e87, 0x7da4cec0, 0x6c152daa, 0xcb0396a8,
0xc50dfe5d, 0xfcd707ab, 0x0921c42f,
0x89dff0bb, 0x5fe2be78, 0x448f4f33, 0x754613c9, 0x2b05d08d,
0x48b9d585, 0xdc049441, 0xc8098f9b,
0x7dede786, 0xc39a3373, 0x42410005, 0x6a091751, 0x0ef3c8a6,
0x890072d6, 0x28207682, 0xa9a9f7be,
0xbf32679d, 0xd45b5b75, 0xb353fd00, 0xcbb0e358, 0x830f220a,
0x1f8fb214, 0xd372cf08, 0xcc3c4a13,
0x8cf63166, 0x061c87be, 0x88c98f88, 0x6062e397, 0x47cf8e7a,
0xb6c85283, 0x3cc2acfb, 0x3fc06976,
0x4e8f0252, 0x64d8314d, 0xda3870e3, 0x1e665459, 0xc10908f0,
0x513021a5, 0x6c5b68b7, 0x822f8aa0,
0x3007cd3e, 0x74719eef, 0xdc872681, 0x073340d4, 0x7e432fd9,
0x0c5ec241, 0x8809286c, 0xf592d891,
0x08a930f6, 0x957ef305, 0xb7fbffbd, 0xc266e96f, 0x6fe4ac98,
0xb173ecc0, 0xbc60b42a, 0x953498da,
0xfba1ae12, 0x2d4bd736, 0x0f25faab, 0xa4f3fceb, 0xe2969123,
0x257f0c3d, 0x9348af49, 0x361400bc,
0xe8816f4a, 0x3814f200, 0xa3f94043, 0x9c7a54c2, 0xbc704f57,
0xda41e7f9, 0xc25ad33a, 0x54f4a084,
0xb17f5505, 0x59357cbe, 0xedbd15c8, 0x7f97c5ab, 0xba5ac7b5,
0xb6f6deaf, 0x3a479c3a, 0x5302da25,
0x653d7e6a, 0x54268d49, 0x51a477ea, 0x5017d55b, 0xd7d25d88,
0x44136c76, 0x0404a8c8, 0xb8e5a121,
0xb81a928a, 0x60ed5869, 0x97c55b96, 0xeaec991b, 0x29935913,
0x01fdb7f1, 0x088e8dfa, 0x9ab6f6f5,
0x3b4cbf9f, 0x4a5de3ab, 0xe6051d35, 0xa0e1d855, 0xd36b4cf1,
0xf544edeb, 0xb0e93524, 0xbebb8fbd,
0xa2d762cf, 0x49c92f54, 0x38b5f331, 0x7128a454, 0x48392905,
0xa65b1db8, 0x851c97bd, 0xd675cf2f
};
static const u32 s7[256] = {
0x85e04019, 0x332bf567, 0x662dbfff, 0xcfc65693, 0x2a8d7f6f,
0xab9bc912, 0xde6008a1, 0x2028da1f,
0x0227bce7, 0x4d642916, 0x18fac300, 0x50f18b82, 0x2cb2cb11,
0xb232e75c, 0x4b3695f2, 0xb28707de,
0xa05fbcf6, 0xcd4181e9, 0xe150210c, 0xe24ef1bd, 0xb168c381,
0xfde4e789, 0x5c79b0d8, 0x1e8bfd43,
0x4d495001, 0x38be4341, 0x913cee1d, 0x92a79c3f, 0x089766be,
0xbaeeadf4, 0x1286becf, 0xb6eacb19,
0x2660c200, 0x7565bde4, 0x64241f7a, 0x8248dca9, 0xc3b3ad66,
0x28136086, 0x0bd8dfa8, 0x356d1cf2,
0x107789be, 0xb3b2e9ce, 0x0502aa8f, 0x0bc0351e, 0x166bf52a,
0xeb12ff82, 0xe3486911, 0xd34d7516,
0x4e7b3aff, 0x5f43671b, 0x9cf6e037, 0x4981ac83, 0x334266ce,
0x8c9341b7, 0xd0d854c0, 0xcb3a6c88,
0x47bc2829, 0x4725ba37, 0xa66ad22b, 0x7ad61f1e, 0x0c5cbafa,
0x4437f107, 0xb6e79962, 0x42d2d816,
0x0a961288, 0xe1a5c06e, 0x13749e67, 0x72fc081a, 0xb1d139f7,
0xf9583745, 0xcf19df58, 0xbec3f756,
0xc06eba30, 0x07211b24, 0x45c28829, 0xc95e317f, 0xbc8ec511,
0x38bc46e9, 0xc6e6fa14, 0xbae8584a,
0xad4ebc46, 0x468f508b, 0x7829435f, 0xf124183b, 0x821dba9f,
0xaff60ff4, 0xea2c4e6d, 0x16e39264,
0x92544a8b, 0x009b4fc3, 0xaba68ced, 0x9ac96f78, 0x06a5b79a,
0xb2856e6e, 0x1aec3ca9, 0xbe838688,
0x0e0804e9, 0x55f1be56, 0xe7e5363b, 0xb3a1f25d, 0xf7debb85,
0x61fe033c, 0x16746233, 0x3c034c28,
0xda6d0c74, 0x79aac56c, 0x3ce4e1ad, 0x51f0c802, 0x98f8f35a,
0x1626a49f, 0xeed82b29, 0x1d382fe3,
0x0c4fb99a, 0xbb325778, 0x3ec6d97b, 0x6e77a6a9, 0xcb658b5c,
0xd45230c7, 0x2bd1408b, 0x60c03eb7,
0xb9068d78, 0xa33754f4, 0xf430c87d, 0xc8a71302, 0xb96d8c32,
0xebd4e7be, 0xbe8b9d2d, 0x7979fb06,
0xe7225308, 0x8b75cf77, 0x11ef8da4, 0xe083c858, 0x8d6b786f,
0x5a6317a6, 0xfa5cf7a0, 0x5dda0033,
0xf28ebfb0, 0xf5b9c310, 0xa0eac280, 0x08b9767a, 0xa3d9d2b0,
0x79d34217, 0x021a718d, 0x9ac6336a,
0x2711fd60, 0x438050e3, 0x069908a8, 0x3d7fedc4, 0x826d2bef,
0x4eeb8476, 0x488dcf25, 0x36c9d566,
0x28e74e41, 0xc2610aca, 0x3d49a9cf, 0xbae3b9df, 0xb65f8de6,
0x92aeaf64, 0x3ac7d5e6, 0x9ea80509,
0xf22b017d, 0xa4173f70, 0xdd1e16c3, 0x15e0d7f9, 0x50b1b887,
0x2b9f4fd5, 0x625aba82, 0x6a017962,
0x2ec01b9c, 0x15488aa9, 0xd716e740, 0x40055a2c, 0x93d29a22,
0xe32dbf9a, 0x058745b9, 0x3453dc1e,
0xd699296e, 0x496cff6f, 0x1c9f4986, 0xdfe2ed07, 0xb87242d1,
0x19de7eae, 0x053e561a, 0x15ad6f8c,
0x66626c1c, 0x7154c24c, 0xea082b2a, 0x93eb2939, 0x17dcb0f0,
0x58d4f2ae, 0x9ea294fb, 0x52cf564c,
0x9883fe66, 0x2ec40581, 0x763953c3, 0x01d6692e, 0xd3a0c108,
0xa1e7160e, 0xe4f2dfa6, 0x693ed285,
0x74904698, 0x4c2b0edd, 0x4f757656, 0x5d393378, 0xa132234f,
0x3d321c5d, 0xc3f5e194, 0x4b269301,
0xc79f022f, 0x3c997e7e, 0x5e4f9504, 0x3ffafbbd, 0x76f7ad0e,
0x296693f4, 0x3d1fce6f, 0xc61e45be,
0xd3b5ab34, 0xf72bf9b7, 0x1b0434c0, 0x4e72b567, 0x5592a33d,
0xb5229301, 0xcfd2a87f, 0x60aeb767,
0x1814386b, 0x30bcc33d, 0x38a0c07d, 0xfd1606f2, 0xc363519b,
0x589dd390, 0x5479f8e6, 0x1cb8d647,
0x97fd61a9, 0xea7759f4, 0x2d57539d, 0x569a58cf, 0xe84e63ad,
0x462e1b78, 0x6580f87e, 0xf3817914,
0x91da55f4, 0x40a230f3, 0xd1988f35, 0xb6e318d2, 0x3ffa50bc,
0x3d40f021, 0xc3c0bdae, 0x4958c24c,
0x518f36b2, 0x84b1d370, 0x0fedce83, 0x878ddada, 0xf2a279c7,
0x94e01be8, 0x90716f4b, 0x954b8aa3
};
static const u32 sb8[256] = {
0xe216300d, 0xbbddfffc, 0xa7ebdabd, 0x35648095, 0x7789f8b7,
0xe6c1121b, 0x0e241600, 0x052ce8b5,
0x11a9cfb0, 0xe5952f11, 0xece7990a, 0x9386d174, 0x2a42931c,
0x76e38111, 0xb12def3a, 0x37ddddfc,
0xde9adeb1, 0x0a0cc32c, 0xbe197029, 0x84a00940, 0xbb243a0f,
0xb4d137cf, 0xb44e79f0, 0x049eedfd,
0x0b15a15d, 0x480d3168, 0x8bbbde5a, 0x669ded42, 0xc7ece831,
0x3f8f95e7, 0x72df191b, 0x7580330d,
0x94074251, 0x5c7dcdfa, 0xabbe6d63, 0xaa402164, 0xb301d40a,
0x02e7d1ca, 0x53571dae, 0x7a3182a2,
0x12a8ddec, 0xfdaa335d, 0x176f43e8, 0x71fb46d4, 0x38129022,
0xce949ad4, 0xb84769ad, 0x965bd862,
0x82f3d055, 0x66fb9767, 0x15b80b4e, 0x1d5b47a0, 0x4cfde06f,
0xc28ec4b8, 0x57e8726e, 0x647a78fc,
0x99865d44, 0x608bd593, 0x6c200e03, 0x39dc5ff6, 0x5d0b00a3,
0xae63aff2, 0x7e8bd632, 0x70108c0c,
0xbbd35049, 0x2998df04, 0x980cf42a, 0x9b6df491, 0x9e7edd53,
0x06918548, 0x58cb7e07, 0x3b74ef2e,
0x522fffb1, 0xd24708cc, 0x1c7e27cd, 0xa4eb215b, 0x3cf1d2e2,
0x19b47a38, 0x424f7618, 0x35856039,
0x9d17dee7, 0x27eb35e6, 0xc9aff67b, 0x36baf5b8, 0x09c467cd,
0xc18910b1, 0xe11dbf7b, 0x06cd1af8,
0x7170c608, 0x2d5e3354, 0xd4de495a, 0x64c6d006, 0xbcc0c62c,
0x3dd00db3, 0x708f8f34, 0x77d51b42,
0x264f620f, 0x24b8d2bf, 0x15c1b79e, 0x46a52564, 0xf8d7e54e,
0x3e378160, 0x7895cda5, 0x859c15a5,
0xe6459788, 0xc37bc75f, 0xdb07ba0c, 0x0676a3ab, 0x7f229b1e,
0x31842e7b, 0x24259fd7, 0xf8bef472,
0x835ffcb8, 0x6df4c1f2, 0x96f5b195, 0xfd0af0fc, 0xb0fe134c,
0xe2506d3d, 0x4f9b12ea, 0xf215f225,
0xa223736f, 0x9fb4c428, 0x25d04979, 0x34c713f8, 0xc4618187,
0xea7a6e98, 0x7cd16efc, 0x1436876c,
0xf1544107, 0xbedeee14, 0x56e9af27, 0xa04aa441, 0x3cf7c899,
0x92ecbae6, 0xdd67016d, 0x151682eb,
0xa842eedf, 0xfdba60b4, 0xf1907b75, 0x20e3030f, 0x24d8c29e,
0xe139673b, 0xefa63fb8, 0x71873054,
0xb6f2cf3b, 0x9f326442, 0xcb15a4cc, 0xb01a4504, 0xf1e47d8d,
0x844a1be5, 0xbae7dfdc, 0x42cbda70,
0xcd7dae0a, 0x57e85b7a, 0xd53f5af6, 0x20cf4d8c, 0xcea4d428,
0x79d130a4, 0x3486ebfb, 0x33d3cddc,
0x77853b53, 0x37effcb5, 0xc5068778, 0xe580b3e6, 0x4e68b8f4,
0xc5c8b37e, 0x0d809ea2, 0x398feb7c,
0x132a4f94, 0x43b7950e, 0x2fee7d1c, 0x223613bd, 0xdd06caa2,
0x37df932b, 0xc4248289, 0xacf3ebc3,
0x5715f6b7, 0xef3478dd, 0xf267616f, 0xc148cbe4, 0x9052815e,
0x5e410fab, 0xb48a2465, 0x2eda7fa4,
0xe87b40e4, 0xe98ea084, 0x5889e9e1, 0xefd390fc, 0xdd07d35b,
0xdb485694, 0x38d7e5b2, 0x57720101,
0x730edebc, 0x5b643113, 0x94917e4f, 0x503c2fba, 0x646f1282,
0x7523d24a, 0xe0779695, 0xf9c17a8f,
0x7a5b2121, 0xd187b896, 0x29263a4d, 0xba510cdf, 0x81f47c9f,
0xad1163ed, 0xea7b5965, 0x1a00726e,
0x11403092, 0x00da6d77, 0x4a0cdd61, 0xad1f4603, 0x605bdfb0,
0x9eedc364, 0x22ebe6a8, 0xcee7d28a,
0xa0e736a0, 0x5564a6b9, 0x10853209, 0xc7eb8f37, 0x2de705ca,
0x8951570f, 0xdf09822b, 0xbd691a6c,
0xaa12e4f2, 0x87451c0f, 0xe0f6a27a, 0x3ada4819, 0x4cf1764f,
0x0d771c2b, 0x67cdb156, 0x350d8384,
0x5938fa0f, 0x42399ef3, 0x36997b07, 0x0e84093d, 0x4aa93e61,
0x8360d87b, 0x1fa98b0c, 0x1149382c,
0xe97625a5, 0x0614d1b7, 0x0e25244b, 0x0c768347, 0x589e8d82,
0x0d2059d1, 0xa466bb1e, 0xf8da0a82,
0x04f19130, 0xba6e4ec0, 0x99265164, 0x1ee7230d, 0x50b2ad80,
0xeaee6801, 0x8db2a283, 0xea8bf59e
};
#define s1 cast_s1
#define s2 cast_s2
#define s3 cast_s3
#define s4 cast_s4
#define F1(D, m, r) ((I = ((m) + (D))), (I = rol32(I, (r))), \
(((s1[I >> 24] ^ s2[(I>>16)&0xff]) - s3[(I>>8)&0xff]) + s4[I&0xff]))
#define F2(D, m, r) ((I = ((m) ^ (D))), (I = rol32(I, (r))), \
(((s1[I >> 24] - s2[(I>>16)&0xff]) + s3[(I>>8)&0xff]) ^ s4[I&0xff]))
#define F3(D, m, r) ((I = ((m) - (D))), (I = rol32(I, (r))), \
(((s1[I >> 24] + s2[(I>>16)&0xff]) ^ s3[(I>>8)&0xff]) - s4[I&0xff]))
void __cast5_encrypt(struct cast5_ctx *c, u8 *outbuf, const u8 *inbuf)
{
const __be32 *src = (const __be32 *)inbuf;
__be32 *dst = (__be32 *)outbuf;
u32 l, r, t;
u32 I; /* used by the Fx macros */
u32 *Km;
u8 *Kr;
Km = c->Km;
Kr = c->Kr;
/* (L0,R0) <-- (m1...m64). (Split the plaintext into left and
* right 32-bit halves L0 = m1...m32 and R0 = m33...m64.)
*/
l = be32_to_cpu(src[0]);
r = be32_to_cpu(src[1]);
/* (16 rounds) for i from 1 to 16, compute Li and Ri as follows:
* Li = Ri-1;
* Ri = Li-1 ^ f(Ri-1,Kmi,Kri), where f is defined in Section 2.2
* Rounds 1, 4, 7, 10, 13, and 16 use f function Type 1.
* Rounds 2, 5, 8, 11, and 14 use f function Type 2.
* Rounds 3, 6, 9, 12, and 15 use f function Type 3.
*/
t = l; l = r; r = t ^ F1(r, Km[0], Kr[0]);
t = l; l = r; r = t ^ F2(r, Km[1], Kr[1]);
t = l; l = r; r = t ^ F3(r, Km[2], Kr[2]);
t = l; l = r; r = t ^ F1(r, Km[3], Kr[3]);
t = l; l = r; r = t ^ F2(r, Km[4], Kr[4]);
t = l; l = r; r = t ^ F3(r, Km[5], Kr[5]);
t = l; l = r; r = t ^ F1(r, Km[6], Kr[6]);
t = l; l = r; r = t ^ F2(r, Km[7], Kr[7]);
t = l; l = r; r = t ^ F3(r, Km[8], Kr[8]);
t = l; l = r; r = t ^ F1(r, Km[9], Kr[9]);
t = l; l = r; r = t ^ F2(r, Km[10], Kr[10]);
t = l; l = r; r = t ^ F3(r, Km[11], Kr[11]);
if (!(c->rr)) {
t = l; l = r; r = t ^ F1(r, Km[12], Kr[12]);
t = l; l = r; r = t ^ F2(r, Km[13], Kr[13]);
t = l; l = r; r = t ^ F3(r, Km[14], Kr[14]);
t = l; l = r; r = t ^ F1(r, Km[15], Kr[15]);
}
/* c1...c64 <-- (R16,L16). (Exchange final blocks L16, R16 and
* concatenate to form the ciphertext.) */
dst[0] = cpu_to_be32(r);
dst[1] = cpu_to_be32(l);
}
EXPORT_SYMBOL_GPL(__cast5_encrypt);
static void cast5_encrypt(struct crypto_tfm *tfm, u8 *outbuf, const u8 *inbuf)
{
__cast5_encrypt(crypto_tfm_ctx(tfm), outbuf, inbuf);
}
void __cast5_decrypt(struct cast5_ctx *c, u8 *outbuf, const u8 *inbuf)
{
const __be32 *src = (const __be32 *)inbuf;
__be32 *dst = (__be32 *)outbuf;
u32 l, r, t;
u32 I;
u32 *Km;
u8 *Kr;
Km = c->Km;
Kr = c->Kr;
l = be32_to_cpu(src[0]);
r = be32_to_cpu(src[1]);
if (!(c->rr)) {
t = l; l = r; r = t ^ F1(r, Km[15], Kr[15]);
t = l; l = r; r = t ^ F3(r, Km[14], Kr[14]);
t = l; l = r; r = t ^ F2(r, Km[13], Kr[13]);
t = l; l = r; r = t ^ F1(r, Km[12], Kr[12]);
}
t = l; l = r; r = t ^ F3(r, Km[11], Kr[11]);
t = l; l = r; r = t ^ F2(r, Km[10], Kr[10]);
t = l; l = r; r = t ^ F1(r, Km[9], Kr[9]);
t = l; l = r; r = t ^ F3(r, Km[8], Kr[8]);
t = l; l = r; r = t ^ F2(r, Km[7], Kr[7]);
t = l; l = r; r = t ^ F1(r, Km[6], Kr[6]);
t = l; l = r; r = t ^ F3(r, Km[5], Kr[5]);
t = l; l = r; r = t ^ F2(r, Km[4], Kr[4]);
t = l; l = r; r = t ^ F1(r, Km[3], Kr[3]);
t = l; l = r; r = t ^ F3(r, Km[2], Kr[2]);
t = l; l = r; r = t ^ F2(r, Km[1], Kr[1]);
t = l; l = r; r = t ^ F1(r, Km[0], Kr[0]);
dst[0] = cpu_to_be32(r);
dst[1] = cpu_to_be32(l);
}
EXPORT_SYMBOL_GPL(__cast5_decrypt);
static void cast5_decrypt(struct crypto_tfm *tfm, u8 *outbuf, const u8 *inbuf)
{
__cast5_decrypt(crypto_tfm_ctx(tfm), outbuf, inbuf);
}
static void key_schedule(u32 *x, u32 *z, u32 *k)
{
#define xi(i) ((x[(i)/4] >> (8*(3-((i)%4)))) & 0xff)
#define zi(i) ((z[(i)/4] >> (8*(3-((i)%4)))) & 0xff)
z[0] = x[0] ^ s5[xi(13)] ^ s6[xi(15)] ^ s7[xi(12)] ^ sb8[xi(14)] ^
s7[xi(8)];
z[1] = x[2] ^ s5[zi(0)] ^ s6[zi(2)] ^ s7[zi(1)] ^ sb8[zi(3)] ^
sb8[xi(10)];
z[2] = x[3] ^ s5[zi(7)] ^ s6[zi(6)] ^ s7[zi(5)] ^ sb8[zi(4)] ^
s5[xi(9)];
z[3] = x[1] ^ s5[zi(10)] ^ s6[zi(9)] ^ s7[zi(11)] ^ sb8[zi(8)] ^
s6[xi(11)];
k[0] = s5[zi(8)] ^ s6[zi(9)] ^ s7[zi(7)] ^ sb8[zi(6)] ^ s5[zi(2)];
k[1] = s5[zi(10)] ^ s6[zi(11)] ^ s7[zi(5)] ^ sb8[zi(4)] ^
s6[zi(6)];
k[2] = s5[zi(12)] ^ s6[zi(13)] ^ s7[zi(3)] ^ sb8[zi(2)] ^
s7[zi(9)];
k[3] = s5[zi(14)] ^ s6[zi(15)] ^ s7[zi(1)] ^ sb8[zi(0)] ^
sb8[zi(12)];
x[0] = z[2] ^ s5[zi(5)] ^ s6[zi(7)] ^ s7[zi(4)] ^ sb8[zi(6)] ^
s7[zi(0)];
x[1] = z[0] ^ s5[xi(0)] ^ s6[xi(2)] ^ s7[xi(1)] ^ sb8[xi(3)] ^
sb8[zi(2)];
x[2] = z[1] ^ s5[xi(7)] ^ s6[xi(6)] ^ s7[xi(5)] ^ sb8[xi(4)] ^
s5[zi(1)];
x[3] = z[3] ^ s5[xi(10)] ^ s6[xi(9)] ^ s7[xi(11)] ^ sb8[xi(8)] ^
s6[zi(3)];
k[4] = s5[xi(3)] ^ s6[xi(2)] ^ s7[xi(12)] ^ sb8[xi(13)] ^
s5[xi(8)];
k[5] = s5[xi(1)] ^ s6[xi(0)] ^ s7[xi(14)] ^ sb8[xi(15)] ^
s6[xi(13)];
k[6] = s5[xi(7)] ^ s6[xi(6)] ^ s7[xi(8)] ^ sb8[xi(9)] ^ s7[xi(3)];
k[7] = s5[xi(5)] ^ s6[xi(4)] ^ s7[xi(10)] ^ sb8[xi(11)] ^
sb8[xi(7)];
z[0] = x[0] ^ s5[xi(13)] ^ s6[xi(15)] ^ s7[xi(12)] ^ sb8[xi(14)] ^
s7[xi(8)];
z[1] = x[2] ^ s5[zi(0)] ^ s6[zi(2)] ^ s7[zi(1)] ^ sb8[zi(3)] ^
sb8[xi(10)];
z[2] = x[3] ^ s5[zi(7)] ^ s6[zi(6)] ^ s7[zi(5)] ^ sb8[zi(4)] ^
s5[xi(9)];
z[3] = x[1] ^ s5[zi(10)] ^ s6[zi(9)] ^ s7[zi(11)] ^ sb8[zi(8)] ^
s6[xi(11)];
k[8] = s5[zi(3)] ^ s6[zi(2)] ^ s7[zi(12)] ^ sb8[zi(13)] ^
s5[zi(9)];
k[9] = s5[zi(1)] ^ s6[zi(0)] ^ s7[zi(14)] ^ sb8[zi(15)] ^
s6[zi(12)];
k[10] = s5[zi(7)] ^ s6[zi(6)] ^ s7[zi(8)] ^ sb8[zi(9)] ^ s7[zi(2)];
k[11] = s5[zi(5)] ^ s6[zi(4)] ^ s7[zi(10)] ^ sb8[zi(11)] ^
sb8[zi(6)];
x[0] = z[2] ^ s5[zi(5)] ^ s6[zi(7)] ^ s7[zi(4)] ^ sb8[zi(6)] ^
s7[zi(0)];
x[1] = z[0] ^ s5[xi(0)] ^ s6[xi(2)] ^ s7[xi(1)] ^ sb8[xi(3)] ^
sb8[zi(2)];
x[2] = z[1] ^ s5[xi(7)] ^ s6[xi(6)] ^ s7[xi(5)] ^ sb8[xi(4)] ^
s5[zi(1)];
x[3] = z[3] ^ s5[xi(10)] ^ s6[xi(9)] ^ s7[xi(11)] ^ sb8[xi(8)] ^
s6[zi(3)];
k[12] = s5[xi(8)] ^ s6[xi(9)] ^ s7[xi(7)] ^ sb8[xi(6)] ^ s5[xi(3)];
k[13] = s5[xi(10)] ^ s6[xi(11)] ^ s7[xi(5)] ^ sb8[xi(4)] ^
s6[xi(7)];
k[14] = s5[xi(12)] ^ s6[xi(13)] ^ s7[xi(3)] ^ sb8[xi(2)] ^
s7[xi(8)];
k[15] = s5[xi(14)] ^ s6[xi(15)] ^ s7[xi(1)] ^ sb8[xi(0)] ^
sb8[xi(13)];
#undef xi
#undef zi
}
int cast5_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int key_len)
{
struct cast5_ctx *c = crypto_tfm_ctx(tfm);
int i;
u32 x[4];
u32 z[4];
u32 k[16];
__be32 p_key[4];
c->rr = key_len <= 10 ? 1 : 0;
memset(p_key, 0, 16);
memcpy(p_key, key, key_len);
x[0] = be32_to_cpu(p_key[0]);
x[1] = be32_to_cpu(p_key[1]);
x[2] = be32_to_cpu(p_key[2]);
x[3] = be32_to_cpu(p_key[3]);
key_schedule(x, z, k);
for (i = 0; i < 16; i++)
c->Km[i] = k[i];
key_schedule(x, z, k);
for (i = 0; i < 16; i++)
c->Kr[i] = k[i] & 0x1f;
return 0;
}
EXPORT_SYMBOL_GPL(cast5_setkey);
static struct crypto_alg alg = {
.cra_name = "cast5",
.cra_driver_name = "cast5-generic",
.cra_priority = 100,
.cra_flags = CRYPTO_ALG_TYPE_CIPHER,
.cra_blocksize = CAST5_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct cast5_ctx),
.cra_alignmask = 3,
.cra_module = THIS_MODULE,
.cra_u = {
.cipher = {
.cia_min_keysize = CAST5_MIN_KEY_SIZE,
.cia_max_keysize = CAST5_MAX_KEY_SIZE,
.cia_setkey = cast5_setkey,
.cia_encrypt = cast5_encrypt,
.cia_decrypt = cast5_decrypt
}
}
};
static int __init cast5_mod_init(void)
{
return crypto_register_alg(&alg);
}
static void __exit cast5_mod_fini(void)
{
crypto_unregister_alg(&alg);
}
subsys_initcall(cast5_mod_init);
module_exit(cast5_mod_fini);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Cast5 Cipher Algorithm");
MODULE_ALIAS_CRYPTO("cast5");
MODULE_ALIAS_CRYPTO("cast5-generic");
![swh spinner](/static/img/swh-spinner.gif)
Computing file changes ...