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Diffstat (limited to 'libXdmcp/Wraphelp.c')
| -rw-r--r-- | libXdmcp/Wraphelp.c | 500 |
1 files changed, 500 insertions, 0 deletions
diff --git a/libXdmcp/Wraphelp.c b/libXdmcp/Wraphelp.c new file mode 100644 index 000000000..07ccf3ea7 --- /dev/null +++ b/libXdmcp/Wraphelp.c @@ -0,0 +1,500 @@ +/* + * $Xorg: A8Eq.c,v 1.4 2001/02/09 02:03:48 xorgcvs Exp $ + * + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include <sys/types.h> +#include <X11/Xmd.h> +#include "Wrap.h" + +/* des routines for non-usa - eay 10/9/1991 eay@psych.psy.uq.oz.au + * These routines were written for speed not size so they are bigger than + * needed. I have removed some of the loop unrolling, this will reduce + * code size at the expense of some speed. + * 25/9/1991 eay - much faster _XdmcpAuthSetup (4 times faster). + * 19/9/1991 eay - cleaned up the IP and FP code. + * 10/9/1991 eay - first release. + * The des routines this file has been made from can be found in + * ftp.psy.uq.oz.au /pub/DES + * This particular version derived from OpenBSD Revsion 1.3. + */ + +/* + * + * Export Requirements. + * You may not export or re-export this software or any copy or + * adaptation in violation of any applicable laws or regulations. + * + * Without limiting the generality of the foregoing, hardware, software, + * technology or services provided under this license agreement may not + * be exported, reexported, transferred or downloaded to or within (or to + * a national resident of) countries under U.S. economic embargo + * including the following countries: + * + * Cuba, Iran, Libya, North Korea, Sudan and Syria. This list is subject + * to change. + * + * Hardware, software, technology or services may not be exported, + * reexported, transferred or downloaded to persons or entities listed on + * the U.S. Department of Commerce Denied Persons List, Entity List of + * proliferation concern or on any U.S. Treasury Department Designated + * Nationals exclusion list, or to parties directly or indirectly + * involved in the development or production of nuclear, chemical, + * biological weapons or in missile technology programs as specified in + * the U.S. Export Administration Regulations (15 CFR 744). + * + * By accepting this license agreement you confirm that you are not + * located in (or a national resident of) any country under U.S. economic + * embargo, not identified on any U.S. Department of Commerce Denied + * Persons List, Entity List or Treasury Department Designated Nationals + * exclusion list, and not directly or indirectly involved in the + * development or production of nuclear, chemical, biological weapons or + * in missile technology programs as specified in the U.S. Export + * Administration Regulations. + * + * + * Local Country Import Requirements. The software you are about to + * download contains cryptography technology. Some countries regulate the + * import, use and/or export of certain products with cryptography. The + * X.org Foundation makes no claims as to the applicability of local + * country import, use and/or export regulations in relation to the + * download of this product. If you are located outside the U.S. and + * Canada you are advised to consult your local country regulations to + * insure compliance. + */ + +static const CARD32 skb[8][64] = { + /* for C bits (numbered as per FIPS 46) 1 2 3 4 5 6 */ + { 0x00000000,0x00000010,0x20000000,0x20000010, + 0x00010000,0x00010010,0x20010000,0x20010010, + 0x00000800,0x00000810,0x20000800,0x20000810, + 0x00010800,0x00010810,0x20010800,0x20010810, + 0x00000020,0x00000030,0x20000020,0x20000030, + 0x00010020,0x00010030,0x20010020,0x20010030, + 0x00000820,0x00000830,0x20000820,0x20000830, + 0x00010820,0x00010830,0x20010820,0x20010830, + 0x00080000,0x00080010,0x20080000,0x20080010, + 0x00090000,0x00090010,0x20090000,0x20090010, + 0x00080800,0x00080810,0x20080800,0x20080810, + 0x00090800,0x00090810,0x20090800,0x20090810, + 0x00080020,0x00080030,0x20080020,0x20080030, + 0x00090020,0x00090030,0x20090020,0x20090030, + 0x00080820,0x00080830,0x20080820,0x20080830, + 0x00090820,0x00090830,0x20090820,0x20090830 }, + /* for C bits (numbered as per FIPS 46) 7 8 10 11 12 13 */ + { 0x00000000,0x02000000,0x00002000,0x02002000, + 0x00200000,0x02200000,0x00202000,0x02202000, + 0x00000004,0x02000004,0x00002004,0x02002004, + 0x00200004,0x02200004,0x00202004,0x02202004, + 0x00000400,0x02000400,0x00002400,0x02002400, + 0x00200400,0x02200400,0x00202400,0x02202400, + 0x00000404,0x02000404,0x00002404,0x02002404, + 0x00200404,0x02200404,0x00202404,0x02202404, + 0x10000000,0x12000000,0x10002000,0x12002000, + 0x10200000,0x12200000,0x10202000,0x12202000, + 0x10000004,0x12000004,0x10002004,0x12002004, + 0x10200004,0x12200004,0x10202004,0x12202004, + 0x10000400,0x12000400,0x10002400,0x12002400, + 0x10200400,0x12200400,0x10202400,0x12202400, + 0x10000404,0x12000404,0x10002404,0x12002404, + 0x10200404,0x12200404,0x10202404,0x12202404 }, + /* for C bits (numbered as per FIPS 46) 14 15 16 17 19 20 */ + { 0x00000000,0x00000001,0x00040000,0x00040001, + 0x01000000,0x01000001,0x01040000,0x01040001, + 0x00000002,0x00000003,0x00040002,0x00040003, + 0x01000002,0x01000003,0x01040002,0x01040003, + 0x00000200,0x00000201,0x00040200,0x00040201, + 0x01000200,0x01000201,0x01040200,0x01040201, + 0x00000202,0x00000203,0x00040202,0x00040203, + 0x01000202,0x01000203,0x01040202,0x01040203, + 0x08000000,0x08000001,0x08040000,0x08040001, + 0x09000000,0x09000001,0x09040000,0x09040001, + 0x08000002,0x08000003,0x08040002,0x08040003, + 0x09000002,0x09000003,0x09040002,0x09040003, + 0x08000200,0x08000201,0x08040200,0x08040201, + 0x09000200,0x09000201,0x09040200,0x09040201, + 0x08000202,0x08000203,0x08040202,0x08040203, + 0x09000202,0x09000203,0x09040202,0x09040203 }, + /* for C bits (numbered as per FIPS 46) 21 23 24 26 27 28 */ + { 0x00000000,0x00100000,0x00000100,0x00100100, + 0x00000008,0x00100008,0x00000108,0x00100108, + 0x00001000,0x00101000,0x00001100,0x00101100, + 0x00001008,0x00101008,0x00001108,0x00101108, + 0x04000000,0x04100000,0x04000100,0x04100100, + 0x04000008,0x04100008,0x04000108,0x04100108, + 0x04001000,0x04101000,0x04001100,0x04101100, + 0x04001008,0x04101008,0x04001108,0x04101108, + 0x00020000,0x00120000,0x00020100,0x00120100, + 0x00020008,0x00120008,0x00020108,0x00120108, + 0x00021000,0x00121000,0x00021100,0x00121100, + 0x00021008,0x00121008,0x00021108,0x00121108, + 0x04020000,0x04120000,0x04020100,0x04120100, + 0x04020008,0x04120008,0x04020108,0x04120108, + 0x04021000,0x04121000,0x04021100,0x04121100, + 0x04021008,0x04121008,0x04021108,0x04121108 }, + /* for D bits (numbered as per FIPS 46) 1 2 3 4 5 6 */ + { 0x00000000,0x10000000,0x00010000,0x10010000, + 0x00000004,0x10000004,0x00010004,0x10010004, + 0x20000000,0x30000000,0x20010000,0x30010000, + 0x20000004,0x30000004,0x20010004,0x30010004, + 0x00100000,0x10100000,0x00110000,0x10110000, + 0x00100004,0x10100004,0x00110004,0x10110004, + 0x20100000,0x30100000,0x20110000,0x30110000, + 0x20100004,0x30100004,0x20110004,0x30110004, + 0x00001000,0x10001000,0x00011000,0x10011000, + 0x00001004,0x10001004,0x00011004,0x10011004, + 0x20001000,0x30001000,0x20011000,0x30011000, + 0x20001004,0x30001004,0x20011004,0x30011004, + 0x00101000,0x10101000,0x00111000,0x10111000, + 0x00101004,0x10101004,0x00111004,0x10111004, + 0x20101000,0x30101000,0x20111000,0x30111000, + 0x20101004,0x30101004,0x20111004,0x30111004 }, + /* for D bits (numbered as per FIPS 46) 8 9 11 12 13 14 */ + { 0x00000000,0x08000000,0x00000008,0x08000008, + 0x00000400,0x08000400,0x00000408,0x08000408, + 0x00020000,0x08020000,0x00020008,0x08020008, + 0x00020400,0x08020400,0x00020408,0x08020408, + 0x00000001,0x08000001,0x00000009,0x08000009, + 0x00000401,0x08000401,0x00000409,0x08000409, + 0x00020001,0x08020001,0x00020009,0x08020009, + 0x00020401,0x08020401,0x00020409,0x08020409, + 0x02000000,0x0A000000,0x02000008,0x0A000008, + 0x02000400,0x0A000400,0x02000408,0x0A000408, + 0x02020000,0x0A020000,0x02020008,0x0A020008, + 0x02020400,0x0A020400,0x02020408,0x0A020408, + 0x02000001,0x0A000001,0x02000009,0x0A000009, + 0x02000401,0x0A000401,0x02000409,0x0A000409, + 0x02020001,0x0A020001,0x02020009,0x0A020009, + 0x02020401,0x0A020401,0x02020409,0x0A020409 }, + /* for D bits (numbered as per FIPS 46) 16 17 18 19 20 21 */ + { 0x00000000,0x00000100,0x00080000,0x00080100, + 0x01000000,0x01000100,0x01080000,0x01080100, + 0x00000010,0x00000110,0x00080010,0x00080110, + 0x01000010,0x01000110,0x01080010,0x01080110, + 0x00200000,0x00200100,0x00280000,0x00280100, + 0x01200000,0x01200100,0x01280000,0x01280100, + 0x00200010,0x00200110,0x00280010,0x00280110, + 0x01200010,0x01200110,0x01280010,0x01280110, + 0x00000200,0x00000300,0x00080200,0x00080300, + 0x01000200,0x01000300,0x01080200,0x01080300, + 0x00000210,0x00000310,0x00080210,0x00080310, + 0x01000210,0x01000310,0x01080210,0x01080310, + 0x00200200,0x00200300,0x00280200,0x00280300, + 0x01200200,0x01200300,0x01280200,0x01280300, + 0x00200210,0x00200310,0x00280210,0x00280310, + 0x01200210,0x01200310,0x01280210,0x01280310 }, + /* for D bits (numbered as per FIPS 46) 22 23 24 25 27 28 */ + { 0x00000000,0x04000000,0x00040000,0x04040000, + 0x00000002,0x04000002,0x00040002,0x04040002, + 0x00002000,0x04002000,0x00042000,0x04042000, + 0x00002002,0x04002002,0x00042002,0x04042002, + 0x00000020,0x04000020,0x00040020,0x04040020, + 0x00000022,0x04000022,0x00040022,0x04040022, + 0x00002020,0x04002020,0x00042020,0x04042020, + 0x00002022,0x04002022,0x00042022,0x04042022, + 0x00000800,0x04000800,0x00040800,0x04040800, + 0x00000802,0x04000802,0x00040802,0x04040802, + 0x00002800,0x04002800,0x00042800,0x04042800, + 0x00002802,0x04002802,0x00042802,0x04042802, + 0x00000820,0x04000820,0x00040820,0x04040820, + 0x00000822,0x04000822,0x00040822,0x04040822, + 0x00002820,0x04002820,0x00042820,0x04042820, + 0x00002822,0x04002822,0x00042822,0x04042822 } +}; + + +static const CARD32 SPtrans[8][64] = { + /* nibble 0 */ + { 0x00410100, 0x00010000, 0x40400000, 0x40410100, + 0x00400000, 0x40010100, 0x40010000, 0x40400000, + 0x40010100, 0x00410100, 0x00410000, 0x40000100, + 0x40400100, 0x00400000, 0x00000000, 0x40010000, + 0x00010000, 0x40000000, 0x00400100, 0x00010100, + 0x40410100, 0x00410000, 0x40000100, 0x00400100, + 0x40000000, 0x00000100, 0x00010100, 0x40410000, + 0x00000100, 0x40400100, 0x40410000, 0x00000000, + 0x00000000, 0x40410100, 0x00400100, 0x40010000, + 0x00410100, 0x00010000, 0x40000100, 0x00400100, + 0x40410000, 0x00000100, 0x00010100, 0x40400000, + 0x40010100, 0x40000000, 0x40400000, 0x00410000, + 0x40410100, 0x00010100, 0x00410000, 0x40400100, + 0x00400000, 0x40000100, 0x40010000, 0x00000000, + 0x00010000, 0x00400000, 0x40400100, 0x00410100, + 0x40000000, 0x40410000, 0x00000100, 0x40010100 }, + + /* nibble 1 */ + { 0x08021002, 0x00000000, 0x00021000, 0x08020000, + 0x08000002, 0x00001002, 0x08001000, 0x00021000, + 0x00001000, 0x08020002, 0x00000002, 0x08001000, + 0x00020002, 0x08021000, 0x08020000, 0x00000002, + 0x00020000, 0x08001002, 0x08020002, 0x00001000, + 0x00021002, 0x08000000, 0x00000000, 0x00020002, + 0x08001002, 0x00021002, 0x08021000, 0x08000002, + 0x08000000, 0x00020000, 0x00001002, 0x08021002, + 0x00020002, 0x08021000, 0x08001000, 0x00021002, + 0x08021002, 0x00020002, 0x08000002, 0x00000000, + 0x08000000, 0x00001002, 0x00020000, 0x08020002, + 0x00001000, 0x08000000, 0x00021002, 0x08001002, + 0x08021000, 0x00001000, 0x00000000, 0x08000002, + 0x00000002, 0x08021002, 0x00021000, 0x08020000, + 0x08020002, 0x00020000, 0x00001002, 0x08001000, + 0x08001002, 0x00000002, 0x08020000, 0x00021000 }, + + /* nibble 2 */ + { 0x20800000, 0x00808020, 0x00000020, 0x20800020, + 0x20008000, 0x00800000, 0x20800020, 0x00008020, + 0x00800020, 0x00008000, 0x00808000, 0x20000000, + 0x20808020, 0x20000020, 0x20000000, 0x20808000, + 0x00000000, 0x20008000, 0x00808020, 0x00000020, + 0x20000020, 0x20808020, 0x00008000, 0x20800000, + 0x20808000, 0x00800020, 0x20008020, 0x00808000, + 0x00008020, 0x00000000, 0x00800000, 0x20008020, + 0x00808020, 0x00000020, 0x20000000, 0x00008000, + 0x20000020, 0x20008000, 0x00808000, 0x20800020, + 0x00000000, 0x00808020, 0x00008020, 0x20808000, + 0x20008000, 0x00800000, 0x20808020, 0x20000000, + 0x20008020, 0x20800000, 0x00800000, 0x20808020, + 0x00008000, 0x00800020, 0x20800020, 0x00008020, + 0x00800020, 0x00000000, 0x20808000, 0x20000020, + 0x20800000, 0x20008020, 0x00000020, 0x00808000 }, + + /* nibble 3 */ + { 0x00080201, 0x02000200, 0x00000001, 0x02080201, + 0x00000000, 0x02080000, 0x02000201, 0x00080001, + 0x02080200, 0x02000001, 0x02000000, 0x00000201, + 0x02000001, 0x00080201, 0x00080000, 0x02000000, + 0x02080001, 0x00080200, 0x00000200, 0x00000001, + 0x00080200, 0x02000201, 0x02080000, 0x00000200, + 0x00000201, 0x00000000, 0x00080001, 0x02080200, + 0x02000200, 0x02080001, 0x02080201, 0x00080000, + 0x02080001, 0x00000201, 0x00080000, 0x02000001, + 0x00080200, 0x02000200, 0x00000001, 0x02080000, + 0x02000201, 0x00000000, 0x00000200, 0x00080001, + 0x00000000, 0x02080001, 0x02080200, 0x00000200, + 0x02000000, 0x02080201, 0x00080201, 0x00080000, + 0x02080201, 0x00000001, 0x02000200, 0x00080201, + 0x00080001, 0x00080200, 0x02080000, 0x02000201, + 0x00000201, 0x02000000, 0x02000001, 0x02080200 }, + + /* nibble 4 */ + { 0x01000000, 0x00002000, 0x00000080, 0x01002084, + 0x01002004, 0x01000080, 0x00002084, 0x01002000, + 0x00002000, 0x00000004, 0x01000004, 0x00002080, + 0x01000084, 0x01002004, 0x01002080, 0x00000000, + 0x00002080, 0x01000000, 0x00002004, 0x00000084, + 0x01000080, 0x00002084, 0x00000000, 0x01000004, + 0x00000004, 0x01000084, 0x01002084, 0x00002004, + 0x01002000, 0x00000080, 0x00000084, 0x01002080, + 0x01002080, 0x01000084, 0x00002004, 0x01002000, + 0x00002000, 0x00000004, 0x01000004, 0x01000080, + 0x01000000, 0x00002080, 0x01002084, 0x00000000, + 0x00002084, 0x01000000, 0x00000080, 0x00002004, + 0x01000084, 0x00000080, 0x00000000, 0x01002084, + 0x01002004, 0x01002080, 0x00000084, 0x00002000, + 0x00002080, 0x01002004, 0x01000080, 0x00000084, + 0x00000004, 0x00002084, 0x01002000, 0x01000004 }, + + /* nibble 5 */ + { 0x10000008, 0x00040008, 0x00000000, 0x10040400, + 0x00040008, 0x00000400, 0x10000408, 0x00040000, + 0x00000408, 0x10040408, 0x00040400, 0x10000000, + 0x10000400, 0x10000008, 0x10040000, 0x00040408, + 0x00040000, 0x10000408, 0x10040008, 0x00000000, + 0x00000400, 0x00000008, 0x10040400, 0x10040008, + 0x10040408, 0x10040000, 0x10000000, 0x00000408, + 0x00000008, 0x00040400, 0x00040408, 0x10000400, + 0x00000408, 0x10000000, 0x10000400, 0x00040408, + 0x10040400, 0x00040008, 0x00000000, 0x10000400, + 0x10000000, 0x00000400, 0x10040008, 0x00040000, + 0x00040008, 0x10040408, 0x00040400, 0x00000008, + 0x10040408, 0x00040400, 0x00040000, 0x10000408, + 0x10000008, 0x10040000, 0x00040408, 0x00000000, + 0x00000400, 0x10000008, 0x10000408, 0x10040400, + 0x10040000, 0x00000408, 0x00000008, 0x10040008 }, + + /* nibble 6 */ + { 0x00000800, 0x00000040, 0x00200040, 0x80200000, + 0x80200840, 0x80000800, 0x00000840, 0x00000000, + 0x00200000, 0x80200040, 0x80000040, 0x00200800, + 0x80000000, 0x00200840, 0x00200800, 0x80000040, + 0x80200040, 0x00000800, 0x80000800, 0x80200840, + 0x00000000, 0x00200040, 0x80200000, 0x00000840, + 0x80200800, 0x80000840, 0x00200840, 0x80000000, + 0x80000840, 0x80200800, 0x00000040, 0x00200000, + 0x80000840, 0x00200800, 0x80200800, 0x80000040, + 0x00000800, 0x00000040, 0x00200000, 0x80200800, + 0x80200040, 0x80000840, 0x00000840, 0x00000000, + 0x00000040, 0x80200000, 0x80000000, 0x00200040, + 0x00000000, 0x80200040, 0x00200040, 0x00000840, + 0x80000040, 0x00000800, 0x80200840, 0x00200000, + 0x00200840, 0x80000000, 0x80000800, 0x80200840, + 0x80200000, 0x00200840, 0x00200800, 0x80000800 }, + + /* nibble 7 */ + { 0x04100010, 0x04104000, 0x00004010, 0x00000000, + 0x04004000, 0x00100010, 0x04100000, 0x04104010, + 0x00000010, 0x04000000, 0x00104000, 0x00004010, + 0x00104010, 0x04004010, 0x04000010, 0x04100000, + 0x00004000, 0x00104010, 0x00100010, 0x04004000, + 0x04104010, 0x04000010, 0x00000000, 0x00104000, + 0x04000000, 0x00100000, 0x04004010, 0x04100010, + 0x00100000, 0x00004000, 0x04104000, 0x00000010, + 0x00100000, 0x00004000, 0x04000010, 0x04104010, + 0x00004010, 0x04000000, 0x00000000, 0x00104000, + 0x04100010, 0x04004010, 0x04004000, 0x00100010, + 0x04104000, 0x00000010, 0x00100010, 0x04004000, + 0x04104010, 0x00100000, 0x04100000, 0x04000010, + 0x00104000, 0x00004010, 0x04004010, 0x04100000, + 0x00000010, 0x04104000, 0x00104010, 0x00000000, + 0x04000000, 0x04100010, 0x00004000, 0x00104010} +}; + +#define ITERATIONS 16 +#define HALF_ITERATIONS 8 + +#define c2l(c,l) (l =((CARD32)(*((c)++))) , \ + l|=((CARD32)(*((c)++)))<< 8, \ + l|=((CARD32)(*((c)++)))<<16, \ + l|=((CARD32)(*((c)++)))<<24) + +#define l2c(l,c) (*((c)++)=(CARD8)(((l) )&0xff), \ + *((c)++)=(CARD8)(((l)>> 8)&0xff), \ + *((c)++)=(CARD8)(((l)>>16)&0xff), \ + *((c)++)=(CARD8)(((l)>>24)&0xff)) + +#define PERM_OP(a,b,t,n,m) ((t)=((((a)>>(n))^(b))&(m)),\ + (b)^=(t),\ + (a)^=((t)<<(n))) + +#define HPERM_OP(a,t,n,m) ((t)=((((a)<<(16-(n)))^(a))&(m)),\ + (a)=(a)^(t)^(t>>(16-(n))))\ + +static const char shifts2[16] = {0,0,1,1,1,1,1,1,0,1,1,1,1,1,1,0}; + +void _XdmcpAuthSetup(auth_cblock key, auth_wrapper_schedule schedule) +{ + CARD32 c,d,t,s; + CARD8 *in; + CARD32 *k; + int i; + + k=(CARD32 *)schedule; + in=(CARD8 *)key; + + c2l(in,c); + c2l(in,d); + + /* do PC1 in 60 simple operations */ + PERM_OP(d,c,t,4,0x0f0f0f0f); + HPERM_OP(c,t,-2, 0xcccc0000); + HPERM_OP(c,t,-1, 0xaaaa0000); + HPERM_OP(c,t, 8, 0x00ff0000); + HPERM_OP(c,t,-1, 0xaaaa0000); + HPERM_OP(d,t,-8, 0xff000000); + HPERM_OP(d,t, 8, 0x00ff0000); + HPERM_OP(d,t, 2, 0x33330000); + d=((d&0x00aa00aa)<<7)|((d&0x55005500)>>7)|(d&0xaa55aa55); + d=(d>>8)|((c&0xf0000000)>>4); + c&=0x0fffffff; + + for (i=0; i<ITERATIONS; i++) { + if (shifts2[i]) { + c=((c>>2)|(c<<26)); d=((d>>2)|(d<<26)); + } else { + c=((c>>1)|(c<<27)); d=((d>>1)|(d<<27)); + } + c&=0x0fffffff; + d&=0x0fffffff; + /* could be a few less shifts but I am to lazy at this + * point in time to investigate */ + s= skb[0][ (c )&0x3f ]| + skb[1][((c>> 6)&0x03)|((c>> 7)&0x3c)]| + skb[2][((c>>13)&0x0f)|((c>>14)&0x30)]| + skb[3][((c>>20)&0x01)|((c>>21)&0x06) | + ((c>>22)&0x38)]; + t= skb[4][ (d )&0x3f ]| + skb[5][((d>> 7)&0x03)|((d>> 8)&0x3c)]| + skb[6][ (d>>15)&0x3f ]| + skb[7][((d>>21)&0x0f)|((d>>22)&0x30)]; + + /* table contained 0213 4657 */ + *(k++)=((t<<16)|(s&0x0000ffff)); + s= ((s>>16)|(t&0xffff0000)); + + s=(s<<4)|(s>>28); + *(k++)=s; + } + return; +} + +#define D_ENCRYPT(L,R,S) \ + t=(R<<1)|(R>>31); \ + u=(t^s[S ]); \ + t=(t^s[S+1]); \ + t=(t>>4)|(t<<28); \ + L^= SPtrans[1][(t )&0x3f]| \ + SPtrans[3][(t>> 8)&0x3f]| \ + SPtrans[5][(t>>16)&0x3f]| \ + SPtrans[7][(t>>24)&0x3f]| \ + SPtrans[0][(u )&0x3f]| \ + SPtrans[2][(u>> 8)&0x3f]| \ + SPtrans[4][(u>>16)&0x3f]| \ + SPtrans[6][(u>>24)&0x3f]; + + +void _XdmcpAuthDoIt(auth_cblock input, auth_cblock output, + auth_wrapper_schedule ks, int encrypt) +{ + CARD32 l,r,t,u; + CARD32 *s; + CARD8 *in,*out; + int i; + + in=(CARD8 *)input; + out=(CARD8 *)output; + c2l(in,l); + c2l(in,r); + + /* do IP */ + PERM_OP(r,l,t, 4,0x0f0f0f0f); + PERM_OP(l,r,t,16,0x0000ffff); + PERM_OP(r,l,t, 2,0x33333333); + PERM_OP(l,r,t, 8,0x00ff00ff); + PERM_OP(r,l,t, 1,0x55555555); + /* r and l are reversed - remember that :-) */ + t=l; + l=r; + r=t; + + s=(CARD32 *)ks; + + if (encrypt) { + for (i=0; i<(ITERATIONS*2); i+=4) { + D_ENCRYPT(l,r, i); /* 1 */ + D_ENCRYPT(r,l, i+2); /* 2 */ + } + } else { + for (i=(ITERATIONS*2)-2; i >= 0; i-=4) { + D_ENCRYPT(l,r, i); /* 1 */ + D_ENCRYPT(r,l, i-2); /* 2 */ + } + } + + /* swap l and r + * we will not do the swap so just remember they are + * reversed for the rest of the subroutine + * luckily by FP fixes this problem :-) */ + + PERM_OP(r,l,t, 1,0x55555555); + PERM_OP(l,r,t, 8,0x00ff00ff); + PERM_OP(r,l,t, 2,0x33333333); + PERM_OP(l,r,t,16,0x0000ffff); + PERM_OP(r,l,t, 4,0x0f0f0f0f); + + l2c(l,out); + l2c(r,out); + return; +} |