Revision 1aa28fb98368078bcaf527bf46c0e001db934414 authored by Eric Dumazet on 21 September 2018, 22:27:46 UTC, committed by David S. Miller on 24 September 2018, 04:55:25 UTC
As diagnosed by Song Liu, ndo_poll_controller() can be very dangerous on loaded hosts, since the cpu calling ndo_poll_controller() might steal all NAPI contexts (for all RX/TX queues of the NIC). This capture can last for unlimited amount of time, since one cpu is generally not able to drain all the queues under load. i40evf uses NAPI for TX completions, so we better let core networking stack call the napi->poll() to avoid the capture. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
1 parent 158a08a
cast5_generic.c
/* 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>.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#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);
}
module_init(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");
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