summaryrefslogtreecommitdiff
path: root/crypt/sysdeps/unix/des_impl.c
diff options
context:
space:
mode:
Diffstat (limited to 'crypt/sysdeps/unix/des_impl.c')
-rw-r--r--crypt/sysdeps/unix/des_impl.c615
1 files changed, 0 insertions, 615 deletions
diff --git a/crypt/sysdeps/unix/des_impl.c b/crypt/sysdeps/unix/des_impl.c
deleted file mode 100644
index f4fee720a1..0000000000
--- a/crypt/sysdeps/unix/des_impl.c
+++ /dev/null
@@ -1,615 +0,0 @@
-/* Copyright (C) 1992 Eric Young - see COPYING for more details */
-/* Collected from libdes and modified for SECURE RPC by Martin Kuck 1994 */
-#include <string.h>
-#include "des.h"
-
-
-static const unsigned long des_SPtrans[8][64] =
-{
- { /* nibble 0 */
- 0x00820200, 0x00020000, 0x80800000, 0x80820200,
- 0x00800000, 0x80020200, 0x80020000, 0x80800000,
- 0x80020200, 0x00820200, 0x00820000, 0x80000200,
- 0x80800200, 0x00800000, 0x00000000, 0x80020000,
- 0x00020000, 0x80000000, 0x00800200, 0x00020200,
- 0x80820200, 0x00820000, 0x80000200, 0x00800200,
- 0x80000000, 0x00000200, 0x00020200, 0x80820000,
- 0x00000200, 0x80800200, 0x80820000, 0x00000000,
- 0x00000000, 0x80820200, 0x00800200, 0x80020000,
- 0x00820200, 0x00020000, 0x80000200, 0x00800200,
- 0x80820000, 0x00000200, 0x00020200, 0x80800000,
- 0x80020200, 0x80000000, 0x80800000, 0x00820000,
- 0x80820200, 0x00020200, 0x00820000, 0x80800200,
- 0x00800000, 0x80000200, 0x80020000, 0x00000000,
- 0x00020000, 0x00800000, 0x80800200, 0x00820200,
- 0x80000000, 0x80820000, 0x00000200, 0x80020200},
-
- { /* nibble 1 */
- 0x10042004, 0x00000000, 0x00042000, 0x10040000,
- 0x10000004, 0x00002004, 0x10002000, 0x00042000,
- 0x00002000, 0x10040004, 0x00000004, 0x10002000,
- 0x00040004, 0x10042000, 0x10040000, 0x00000004,
- 0x00040000, 0x10002004, 0x10040004, 0x00002000,
- 0x00042004, 0x10000000, 0x00000000, 0x00040004,
- 0x10002004, 0x00042004, 0x10042000, 0x10000004,
- 0x10000000, 0x00040000, 0x00002004, 0x10042004,
- 0x00040004, 0x10042000, 0x10002000, 0x00042004,
- 0x10042004, 0x00040004, 0x10000004, 0x00000000,
- 0x10000000, 0x00002004, 0x00040000, 0x10040004,
- 0x00002000, 0x10000000, 0x00042004, 0x10002004,
- 0x10042000, 0x00002000, 0x00000000, 0x10000004,
- 0x00000004, 0x10042004, 0x00042000, 0x10040000,
- 0x10040004, 0x00040000, 0x00002004, 0x10002000,
- 0x10002004, 0x00000004, 0x10040000, 0x00042000},
-
- { /* nibble 2 */
- 0x41000000, 0x01010040, 0x00000040, 0x41000040,
- 0x40010000, 0x01000000, 0x41000040, 0x00010040,
- 0x01000040, 0x00010000, 0x01010000, 0x40000000,
- 0x41010040, 0x40000040, 0x40000000, 0x41010000,
- 0x00000000, 0x40010000, 0x01010040, 0x00000040,
- 0x40000040, 0x41010040, 0x00010000, 0x41000000,
- 0x41010000, 0x01000040, 0x40010040, 0x01010000,
- 0x00010040, 0x00000000, 0x01000000, 0x40010040,
- 0x01010040, 0x00000040, 0x40000000, 0x00010000,
- 0x40000040, 0x40010000, 0x01010000, 0x41000040,
- 0x00000000, 0x01010040, 0x00010040, 0x41010000,
- 0x40010000, 0x01000000, 0x41010040, 0x40000000,
- 0x40010040, 0x41000000, 0x01000000, 0x41010040,
- 0x00010000, 0x01000040, 0x41000040, 0x00010040,
- 0x01000040, 0x00000000, 0x41010000, 0x40000040,
- 0x41000000, 0x40010040, 0x00000040, 0x01010000},
-
- { /* nibble 3 */
- 0x00100402, 0x04000400, 0x00000002, 0x04100402,
- 0x00000000, 0x04100000, 0x04000402, 0x00100002,
- 0x04100400, 0x04000002, 0x04000000, 0x00000402,
- 0x04000002, 0x00100402, 0x00100000, 0x04000000,
- 0x04100002, 0x00100400, 0x00000400, 0x00000002,
- 0x00100400, 0x04000402, 0x04100000, 0x00000400,
- 0x00000402, 0x00000000, 0x00100002, 0x04100400,
- 0x04000400, 0x04100002, 0x04100402, 0x00100000,
- 0x04100002, 0x00000402, 0x00100000, 0x04000002,
- 0x00100400, 0x04000400, 0x00000002, 0x04100000,
- 0x04000402, 0x00000000, 0x00000400, 0x00100002,
- 0x00000000, 0x04100002, 0x04100400, 0x00000400,
- 0x04000000, 0x04100402, 0x00100402, 0x00100000,
- 0x04100402, 0x00000002, 0x04000400, 0x00100402,
- 0x00100002, 0x00100400, 0x04100000, 0x04000402,
- 0x00000402, 0x04000000, 0x04000002, 0x04100400},
-
- { /* nibble 4 */
- 0x02000000, 0x00004000, 0x00000100, 0x02004108,
- 0x02004008, 0x02000100, 0x00004108, 0x02004000,
- 0x00004000, 0x00000008, 0x02000008, 0x00004100,
- 0x02000108, 0x02004008, 0x02004100, 0x00000000,
- 0x00004100, 0x02000000, 0x00004008, 0x00000108,
- 0x02000100, 0x00004108, 0x00000000, 0x02000008,
- 0x00000008, 0x02000108, 0x02004108, 0x00004008,
- 0x02004000, 0x00000100, 0x00000108, 0x02004100,
- 0x02004100, 0x02000108, 0x00004008, 0x02004000,
- 0x00004000, 0x00000008, 0x02000008, 0x02000100,
- 0x02000000, 0x00004100, 0x02004108, 0x00000000,
- 0x00004108, 0x02000000, 0x00000100, 0x00004008,
- 0x02000108, 0x00000100, 0x00000000, 0x02004108,
- 0x02004008, 0x02004100, 0x00000108, 0x00004000,
- 0x00004100, 0x02004008, 0x02000100, 0x00000108,
- 0x00000008, 0x00004108, 0x02004000, 0x02000008},
-
- { /* nibble 5 */
- 0x20000010, 0x00080010, 0x00000000, 0x20080800,
- 0x00080010, 0x00000800, 0x20000810, 0x00080000,
- 0x00000810, 0x20080810, 0x00080800, 0x20000000,
- 0x20000800, 0x20000010, 0x20080000, 0x00080810,
- 0x00080000, 0x20000810, 0x20080010, 0x00000000,
- 0x00000800, 0x00000010, 0x20080800, 0x20080010,
- 0x20080810, 0x20080000, 0x20000000, 0x00000810,
- 0x00000010, 0x00080800, 0x00080810, 0x20000800,
- 0x00000810, 0x20000000, 0x20000800, 0x00080810,
- 0x20080800, 0x00080010, 0x00000000, 0x20000800,
- 0x20000000, 0x00000800, 0x20080010, 0x00080000,
- 0x00080010, 0x20080810, 0x00080800, 0x00000010,
- 0x20080810, 0x00080800, 0x00080000, 0x20000810,
- 0x20000010, 0x20080000, 0x00080810, 0x00000000,
- 0x00000800, 0x20000010, 0x20000810, 0x20080800,
- 0x20080000, 0x00000810, 0x00000010, 0x20080010},
-
- { /* nibble 6 */
- 0x00001000, 0x00000080, 0x00400080, 0x00400001,
- 0x00401081, 0x00001001, 0x00001080, 0x00000000,
- 0x00400000, 0x00400081, 0x00000081, 0x00401000,
- 0x00000001, 0x00401080, 0x00401000, 0x00000081,
- 0x00400081, 0x00001000, 0x00001001, 0x00401081,
- 0x00000000, 0x00400080, 0x00400001, 0x00001080,
- 0x00401001, 0x00001081, 0x00401080, 0x00000001,
- 0x00001081, 0x00401001, 0x00000080, 0x00400000,
- 0x00001081, 0x00401000, 0x00401001, 0x00000081,
- 0x00001000, 0x00000080, 0x00400000, 0x00401001,
- 0x00400081, 0x00001081, 0x00001080, 0x00000000,
- 0x00000080, 0x00400001, 0x00000001, 0x00400080,
- 0x00000000, 0x00400081, 0x00400080, 0x00001080,
- 0x00000081, 0x00001000, 0x00401081, 0x00400000,
- 0x00401080, 0x00000001, 0x00001001, 0x00401081,
- 0x00400001, 0x00401080, 0x00401000, 0x00001001},
-
- { /* nibble 7 */
- 0x08200020, 0x08208000, 0x00008020, 0x00000000,
- 0x08008000, 0x00200020, 0x08200000, 0x08208020,
- 0x00000020, 0x08000000, 0x00208000, 0x00008020,
- 0x00208020, 0x08008020, 0x08000020, 0x08200000,
- 0x00008000, 0x00208020, 0x00200020, 0x08008000,
- 0x08208020, 0x08000020, 0x00000000, 0x00208000,
- 0x08000000, 0x00200000, 0x08008020, 0x08200020,
- 0x00200000, 0x00008000, 0x08208000, 0x00000020,
- 0x00200000, 0x00008000, 0x08000020, 0x08208020,
- 0x00008020, 0x08000000, 0x00000000, 0x00208000,
- 0x08200020, 0x08008020, 0x08008000, 0x00200020,
- 0x08208000, 0x00000020, 0x00200020, 0x08008000,
- 0x08208020, 0x00200000, 0x08200000, 0x08000020,
- 0x00208000, 0x00008020, 0x08008020, 0x08200000,
- 0x00000020, 0x08208000, 0x00208020, 0x00000000,
- 0x08000000, 0x08200020, 0x00008000, 0x00208020}};
-
-static const unsigned long des_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},
-};
-
-#define c2l(c,l) (l =((unsigned long)(*((c)++))) , \
- l|=((unsigned long)(*((c)++)))<< 8, \
- l|=((unsigned long)(*((c)++)))<<16, \
- l|=((unsigned long)(*((c)++)))<<24)
-
-#define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
- *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
- *((c)++)=(unsigned char)(((l)>>16)&0xff), \
- *((c)++)=(unsigned char)(((l)>>24)&0xff))
-
-/*
- * IP and FP
- * The problem is more of a geometric problem that random bit fiddling.
- * 0 1 2 3 4 5 6 7 62 54 46 38 30 22 14 6
- * 8 9 10 11 12 13 14 15 60 52 44 36 28 20 12 4
- * 16 17 18 19 20 21 22 23 58 50 42 34 26 18 10 2
- * 24 25 26 27 28 29 30 31 to 56 48 40 32 24 16 8 0
- *
- * 32 33 34 35 36 37 38 39 63 55 47 39 31 23 15 7
- * 40 41 42 43 44 45 46 47 61 53 45 37 29 21 13 5
- * 48 49 50 51 52 53 54 55 59 51 43 35 27 19 11 3
- * 56 57 58 59 60 61 62 63 57 49 41 33 25 17 9 1
- *
- * The output has been subject to swaps of the form
- * 0 1 -> 3 1 but the odd and even bits have been put into
- * 2 3 2 0
- * different words. The main trick is to remember that
- * t=((l>>size)^r)&(mask);
- * r^=t;
- * l^=(t<<size);
- * can be used to swap and move bits between words.
- *
- * So l = 0 1 2 3 r = 16 17 18 19
- * 4 5 6 7 20 21 22 23
- * 8 9 10 11 24 25 26 27
- * 12 13 14 15 28 29 30 31
- * becomes (for size == 2 and mask == 0x3333)
- * t = 2^16 3^17 -- -- l = 0 1 16 17 r = 2 3 18 19
- * 6^20 7^21 -- -- 4 5 20 21 6 7 22 23
- * 10^24 11^25 -- -- 8 9 24 25 10 11 24 25
- * 14^28 15^29 -- -- 12 13 28 29 14 15 28 29
- *
- * Thanks for hints from Richard Outerbridge - he told me IP&FP
- * could be done in 15 xor, 10 shifts and 5 ands.
- * When I finally started to think of the problem in 2D
- * I first got ~42 operations without xors. When I remembered
- * how to use xors :-) I got it to its final state.
- */
-
-#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))))
-
-
-/* The changes to this macro may help or hinder, depending on the
- * compiler and the achitecture. gcc2 always seems to do well :-).
- * Inspired by Dana How <how@isl.stanford.edu>
- * DO NOT use the alternative version on machines with 8 byte longs.
- */
-#ifdef ALT_ECB
-#define D_ENCRYPT(L,R,S) \
- u=((R^s[S ])<<2); \
- t= R^s[S+1]; \
- t=((t>>2)+(t<<30)); \
- L^= \
- *(const unsigned long *)(des_SP+0x0100+((t )&0xfc))+ \
- *(const unsigned long *)(des_SP+0x0300+((t>> 8)&0xfc))+ \
- *(const unsigned long *)(des_SP+0x0500+((t>>16)&0xfc))+ \
- *(const unsigned long *)(des_SP+0x0700+((t>>24)&0xfc))+ \
- *(const unsigned long *)(des_SP+ ((u )&0xfc))+ \
- *(const unsigned long *)(des_SP+0x0200+((u>> 8)&0xfc))+ \
- *(const unsigned long *)(des_SP+0x0400+((u>>16)&0xfc))+ \
- *(const unsigned long *)(des_SP+0x0600+((u>>24)&0xfc));
-#else /* original version */
-#define D_ENCRYPT(L,R,S) \
- u=(R^s[S ]); \
- t=R^s[S+1]; \
- t=((t>>4)+(t<<28)); \
- L^= des_SPtrans[1][(t )&0x3f]| \
- des_SPtrans[3][(t>> 8)&0x3f]| \
- des_SPtrans[5][(t>>16)&0x3f]| \
- des_SPtrans[7][(t>>24)&0x3f]| \
- des_SPtrans[0][(u )&0x3f]| \
- des_SPtrans[2][(u>> 8)&0x3f]| \
- des_SPtrans[4][(u>>16)&0x3f]| \
- des_SPtrans[6][(u>>24)&0x3f];
-#endif
-
-#define ITERATIONS 16
-
-static const char shifts2[16] =
-{0, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0};
-
-static void des_set_key (char *, unsigned long *) internal_function;
-static void des_encrypt (unsigned long *, unsigned long *, int)
- internal_function;
-int _des_crypt (char *, unsigned, struct desparams *);
-
-static void
-internal_function
-des_set_key (char *key, unsigned long *schedule)
-{
- register unsigned long c, d, t, s;
- register unsigned char *in;
- register unsigned long *k;
- register int i;
-
- k = (unsigned long *) schedule;
- in = (unsigned char *) key;
-
- c2l (in, c);
- c2l (in, d);
-
- /* I now do it in 47 simple operations :-)
- * Thanks to John Fletcher (john_fletcher@lccmail.ocf.llnl.gov)
- * for the inspiration. :-) */
- PERM_OP (d, c, t, 4, 0x0f0f0f0f);
- HPERM_OP (c, t, -2, 0xcccc0000);
- HPERM_OP (d, t, -2, 0xcccc0000);
- PERM_OP (d, c, t, 1, 0x55555555);
- PERM_OP (c, d, t, 8, 0x00ff00ff);
- PERM_OP (d, c, t, 1, 0x55555555);
- d = (((d & 0x000000ff) << 16) | (d & 0x0000ff00) |
- ((d & 0x00ff0000) >> 16) | ((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 = des_skb[0][(c) & 0x3f] |
- des_skb[1][((c >> 6) & 0x03) | ((c >> 7) & 0x3c)] |
- des_skb[2][((c >> 13) & 0x0f) | ((c >> 14) & 0x30)] |
- des_skb[3][((c >> 20) & 0x01) | ((c >> 21) & 0x06) | ((c >> 22) & 0x38)];
- t = des_skb[4][(d) & 0x3f] |
- des_skb[5][((d >> 7) & 0x03) | ((d >> 8) & 0x3c)] |
- des_skb[6][(d >> 15) & 0x3f] |
- des_skb[7][((d >> 21) & 0x0f) | ((d >> 22) & 0x30)];
-
- /* table contained 0213 4657 */
- *(k++) = ((t << 16) | (s & 0x0000ffff)) & 0xffffffff;
- s = ((s >> 16) | (t & 0xffff0000));
-
- s = (s << 4) | (s >> 28);
- *(k++) = s & 0xffffffff;
- }
-}
-
-
-static void
-internal_function
-des_encrypt (unsigned long *buf, unsigned long *schedule, int encrypt)
-{
- register unsigned long l, r, t, u;
-#ifdef ALT_ECB
- register const unsigned char *des_SP = (const unsigned char *) des_SPtrans;
-#endif
- register int i;
- register unsigned long *s;
-
- l = buf[0];
- r = buf[1];
-
- /* 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 :-) - fix
- * it in the next step */
-
- /* Things have been modified so that the initial rotate is
- * done outside the loop. This required the
- * des_SPtrans values in sp.h to be rotated 1 bit to the right.
- * One perl script later and things have a 5% speed up on a sparc2.
- * Thanks to Richard Outerbridge <71755.204@CompuServe.COM>
- * for pointing this out. */
- t = (r << 1) | (r >> 31);
- r = (l << 1) | (l >> 31);
- l = t;
-
- /* clear the top bits on machines with 8byte longs */
- l &= 0xffffffff;
- r &= 0xffffffff;
-
- s = (unsigned long *) schedule;
- /* I don't know if it is worth the effort of loop unrolling the
- * inner loop */
- if (encrypt)
- {
- for (i = 0; i < 32; i += 4)
- {
- D_ENCRYPT (l, r, i + 0); /* 1 */
- D_ENCRYPT (r, l, i + 2); /* 2 */
- }
- }
- else
- {
- for (i = 30; i > 0; i -= 4)
- {
- D_ENCRYPT (l, r, i - 0); /* 16 */
- D_ENCRYPT (r, l, i - 2); /* 15 */
- }
- }
- l = (l >> 1) | (l << 31);
- r = (r >> 1) | (r << 31);
- /* clear the top bits on machines with 8byte longs */
- l &= 0xffffffff;
- r &= 0xffffffff;
-
- /* swap l and r
- * we will not do the swap so just remember they are
- * reversed for the rest of the subroutine
- * luckily 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);
-
- buf[0] = l;
- buf[1] = r;
-
- l = r = t = u = 0;
-}
-
-
-int
-_des_crypt (char *buf, unsigned len, struct desparams *desp)
-{
- unsigned long schedule[32];
- register unsigned long tin0, tin1;
- register unsigned long tout0, tout1, xor0, xor1;
- register unsigned char *in, *out;
- unsigned long tbuf[2];
- unsigned char *iv, *oiv;
- int cbc_mode;
-
- cbc_mode = (desp->des_mode == CBC) ? 1 : 0;
-
- in = (unsigned char *) buf;
- out = (unsigned char *) buf;
- oiv = iv = (unsigned char *) desp->des_ivec;
-
- des_set_key (desp->des_key, schedule);
-
- tin0 = tin1 = 0; /* For GCC */
- if (desp->des_dir == ENCRYPT)
- {
- c2l (iv, tout0);
- c2l (iv, tout1);
- for (; len > 0; len -= 8)
- {
- c2l (in, tin0);
- c2l (in, tin1);
- if (cbc_mode)
- {
- tin0 ^= tout0;
- tin1 ^= tout1;
- }
- tbuf[0] = tin0;
- tbuf[1] = tin1;
- des_encrypt (tbuf, schedule, 1);
- tout0 = tbuf[0];
- tout1 = tbuf[1];
- l2c (tout0, out);
- l2c (tout1, out);
- }
- l2c (tout0, oiv);
- l2c (tout1, oiv);
- }
- else
- {
- c2l (iv, xor0);
- c2l (iv, xor1);
- for (; len > 0; len -= 8)
- {
- c2l (in, tin0);
- c2l (in, tin1);
- tbuf[0] = tin0;
- tbuf[1] = tin1;
- des_encrypt (tbuf, schedule, 0);
- if (cbc_mode)
- {
- tout0 = tbuf[0] ^ xor0;
- tout1 = tbuf[1] ^ xor1;
- xor0 = tin0;
- xor1 = tin1;
- }
- else
- {
- tout0 = tbuf[0];
- tout1 = tbuf[1];
- }
- l2c (tout0, out);
- l2c (tout1, out);
- }
- l2c (tin0, oiv);
- l2c (tin1, oiv);
- }
- tin0 = tin1 = tout0 = tout1 = xor0 = xor1 = 0;
- tbuf[0] = tbuf[1] = 0;
- __bzero (schedule, sizeof (schedule));
-
- return (1);
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-22 06:17:58 +0000