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Unified Diff: nss/lib/freebl/des.c

Issue 2078763002: Delete bundled copy of NSS and replace with README. (Closed) Base URL: https://chromium.googlesource.com/chromium/deps/nss@master
Patch Set: Delete bundled copy of NSS and replace with README. Created 4 years, 6 months ago
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Index: nss/lib/freebl/des.c
diff --git a/nss/lib/freebl/des.c b/nss/lib/freebl/des.c
deleted file mode 100644
index bcfcaba6069b7cde3080665649be4a9fa89701a5..0000000000000000000000000000000000000000
--- a/nss/lib/freebl/des.c
+++ /dev/null
@@ -1,693 +0,0 @@
-/*
- * des.c
- *
- * core source file for DES-150 library
- * Make key schedule from DES key.
- * Encrypt/Decrypt one 8-byte block.
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#include "des.h"
-#include <stddef.h> /* for ptrdiff_t */
-/* #define USE_INDEXING 1 */
-
-/* Some processors automatically fix up unaligned memory access, so they can
- * read or write a HALF (4 bytes) at a time whether the address is 4-byte
- * aligned or not. */
-#if defined(NSS_X86_OR_X64)
-#define HAVE_UNALIGNED_ACCESS 1
-#endif
-
-/*
- * The tables below are the 8 sbox functions, with the 6-bit input permutation
- * and the 32-bit output permutation pre-computed.
- * They are shifted circularly to the left 3 bits, which removes 2 shifts
- * and an or from each round by reducing the number of sboxes whose
- * indices cross word broundaries from 2 to 1.
- */
-
-static const HALF SP[8][64] = {
-/* Box S1 */ {
- 0x04041000, 0x00000000, 0x00040000, 0x04041010,
- 0x04040010, 0x00041010, 0x00000010, 0x00040000,
- 0x00001000, 0x04041000, 0x04041010, 0x00001000,
- 0x04001010, 0x04040010, 0x04000000, 0x00000010,
- 0x00001010, 0x04001000, 0x04001000, 0x00041000,
- 0x00041000, 0x04040000, 0x04040000, 0x04001010,
- 0x00040010, 0x04000010, 0x04000010, 0x00040010,
- 0x00000000, 0x00001010, 0x00041010, 0x04000000,
- 0x00040000, 0x04041010, 0x00000010, 0x04040000,
- 0x04041000, 0x04000000, 0x04000000, 0x00001000,
- 0x04040010, 0x00040000, 0x00041000, 0x04000010,
- 0x00001000, 0x00000010, 0x04001010, 0x00041010,
- 0x04041010, 0x00040010, 0x04040000, 0x04001010,
- 0x04000010, 0x00001010, 0x00041010, 0x04041000,
- 0x00001010, 0x04001000, 0x04001000, 0x00000000,
- 0x00040010, 0x00041000, 0x00000000, 0x04040010
- },
-/* Box S2 */ {
- 0x00420082, 0x00020002, 0x00020000, 0x00420080,
- 0x00400000, 0x00000080, 0x00400082, 0x00020082,
- 0x00000082, 0x00420082, 0x00420002, 0x00000002,
- 0x00020002, 0x00400000, 0x00000080, 0x00400082,
- 0x00420000, 0x00400080, 0x00020082, 0x00000000,
- 0x00000002, 0x00020000, 0x00420080, 0x00400002,
- 0x00400080, 0x00000082, 0x00000000, 0x00420000,
- 0x00020080, 0x00420002, 0x00400002, 0x00020080,
- 0x00000000, 0x00420080, 0x00400082, 0x00400000,
- 0x00020082, 0x00400002, 0x00420002, 0x00020000,
- 0x00400002, 0x00020002, 0x00000080, 0x00420082,
- 0x00420080, 0x00000080, 0x00020000, 0x00000002,
- 0x00020080, 0x00420002, 0x00400000, 0x00000082,
- 0x00400080, 0x00020082, 0x00000082, 0x00400080,
- 0x00420000, 0x00000000, 0x00020002, 0x00020080,
- 0x00000002, 0x00400082, 0x00420082, 0x00420000
- },
-/* Box S3 */ {
- 0x00000820, 0x20080800, 0x00000000, 0x20080020,
- 0x20000800, 0x00000000, 0x00080820, 0x20000800,
- 0x00080020, 0x20000020, 0x20000020, 0x00080000,
- 0x20080820, 0x00080020, 0x20080000, 0x00000820,
- 0x20000000, 0x00000020, 0x20080800, 0x00000800,
- 0x00080800, 0x20080000, 0x20080020, 0x00080820,
- 0x20000820, 0x00080800, 0x00080000, 0x20000820,
- 0x00000020, 0x20080820, 0x00000800, 0x20000000,
- 0x20080800, 0x20000000, 0x00080020, 0x00000820,
- 0x00080000, 0x20080800, 0x20000800, 0x00000000,
- 0x00000800, 0x00080020, 0x20080820, 0x20000800,
- 0x20000020, 0x00000800, 0x00000000, 0x20080020,
- 0x20000820, 0x00080000, 0x20000000, 0x20080820,
- 0x00000020, 0x00080820, 0x00080800, 0x20000020,
- 0x20080000, 0x20000820, 0x00000820, 0x20080000,
- 0x00080820, 0x00000020, 0x20080020, 0x00080800
- },
-/* Box S4 */ {
- 0x02008004, 0x00008204, 0x00008204, 0x00000200,
- 0x02008200, 0x02000204, 0x02000004, 0x00008004,
- 0x00000000, 0x02008000, 0x02008000, 0x02008204,
- 0x00000204, 0x00000000, 0x02000200, 0x02000004,
- 0x00000004, 0x00008000, 0x02000000, 0x02008004,
- 0x00000200, 0x02000000, 0x00008004, 0x00008200,
- 0x02000204, 0x00000004, 0x00008200, 0x02000200,
- 0x00008000, 0x02008200, 0x02008204, 0x00000204,
- 0x02000200, 0x02000004, 0x02008000, 0x02008204,
- 0x00000204, 0x00000000, 0x00000000, 0x02008000,
- 0x00008200, 0x02000200, 0x02000204, 0x00000004,
- 0x02008004, 0x00008204, 0x00008204, 0x00000200,
- 0x02008204, 0x00000204, 0x00000004, 0x00008000,
- 0x02000004, 0x00008004, 0x02008200, 0x02000204,
- 0x00008004, 0x00008200, 0x02000000, 0x02008004,
- 0x00000200, 0x02000000, 0x00008000, 0x02008200
- },
-/* Box S5 */ {
- 0x00000400, 0x08200400, 0x08200000, 0x08000401,
- 0x00200000, 0x00000400, 0x00000001, 0x08200000,
- 0x00200401, 0x00200000, 0x08000400, 0x00200401,
- 0x08000401, 0x08200001, 0x00200400, 0x00000001,
- 0x08000000, 0x00200001, 0x00200001, 0x00000000,
- 0x00000401, 0x08200401, 0x08200401, 0x08000400,
- 0x08200001, 0x00000401, 0x00000000, 0x08000001,
- 0x08200400, 0x08000000, 0x08000001, 0x00200400,
- 0x00200000, 0x08000401, 0x00000400, 0x08000000,
- 0x00000001, 0x08200000, 0x08000401, 0x00200401,
- 0x08000400, 0x00000001, 0x08200001, 0x08200400,
- 0x00200401, 0x00000400, 0x08000000, 0x08200001,
- 0x08200401, 0x00200400, 0x08000001, 0x08200401,
- 0x08200000, 0x00000000, 0x00200001, 0x08000001,
- 0x00200400, 0x08000400, 0x00000401, 0x00200000,
- 0x00000000, 0x00200001, 0x08200400, 0x00000401
- },
-/* Box S6 */ {
- 0x80000040, 0x81000000, 0x00010000, 0x81010040,
- 0x81000000, 0x00000040, 0x81010040, 0x01000000,
- 0x80010000, 0x01010040, 0x01000000, 0x80000040,
- 0x01000040, 0x80010000, 0x80000000, 0x00010040,
- 0x00000000, 0x01000040, 0x80010040, 0x00010000,
- 0x01010000, 0x80010040, 0x00000040, 0x81000040,
- 0x81000040, 0x00000000, 0x01010040, 0x81010000,
- 0x00010040, 0x01010000, 0x81010000, 0x80000000,
- 0x80010000, 0x00000040, 0x81000040, 0x01010000,
- 0x81010040, 0x01000000, 0x00010040, 0x80000040,
- 0x01000000, 0x80010000, 0x80000000, 0x00010040,
- 0x80000040, 0x81010040, 0x01010000, 0x81000000,
- 0x01010040, 0x81010000, 0x00000000, 0x81000040,
- 0x00000040, 0x00010000, 0x81000000, 0x01010040,
- 0x00010000, 0x01000040, 0x80010040, 0x00000000,
- 0x81010000, 0x80000000, 0x01000040, 0x80010040
- },
-/* Box S7 */ {
- 0x00800000, 0x10800008, 0x10002008, 0x00000000,
- 0x00002000, 0x10002008, 0x00802008, 0x10802000,
- 0x10802008, 0x00800000, 0x00000000, 0x10000008,
- 0x00000008, 0x10000000, 0x10800008, 0x00002008,
- 0x10002000, 0x00802008, 0x00800008, 0x10002000,
- 0x10000008, 0x10800000, 0x10802000, 0x00800008,
- 0x10800000, 0x00002000, 0x00002008, 0x10802008,
- 0x00802000, 0x00000008, 0x10000000, 0x00802000,
- 0x10000000, 0x00802000, 0x00800000, 0x10002008,
- 0x10002008, 0x10800008, 0x10800008, 0x00000008,
- 0x00800008, 0x10000000, 0x10002000, 0x00800000,
- 0x10802000, 0x00002008, 0x00802008, 0x10802000,
- 0x00002008, 0x10000008, 0x10802008, 0x10800000,
- 0x00802000, 0x00000000, 0x00000008, 0x10802008,
- 0x00000000, 0x00802008, 0x10800000, 0x00002000,
- 0x10000008, 0x10002000, 0x00002000, 0x00800008
- },
-/* Box S8 */ {
- 0x40004100, 0x00004000, 0x00100000, 0x40104100,
- 0x40000000, 0x40004100, 0x00000100, 0x40000000,
- 0x00100100, 0x40100000, 0x40104100, 0x00104000,
- 0x40104000, 0x00104100, 0x00004000, 0x00000100,
- 0x40100000, 0x40000100, 0x40004000, 0x00004100,
- 0x00104000, 0x00100100, 0x40100100, 0x40104000,
- 0x00004100, 0x00000000, 0x00000000, 0x40100100,
- 0x40000100, 0x40004000, 0x00104100, 0x00100000,
- 0x00104100, 0x00100000, 0x40104000, 0x00004000,
- 0x00000100, 0x40100100, 0x00004000, 0x00104100,
- 0x40004000, 0x00000100, 0x40000100, 0x40100000,
- 0x40100100, 0x40000000, 0x00100000, 0x40004100,
- 0x00000000, 0x40104100, 0x00100100, 0x40000100,
- 0x40100000, 0x40004000, 0x40004100, 0x00000000,
- 0x40104100, 0x00104000, 0x00104000, 0x00004100,
- 0x00004100, 0x00100100, 0x40000000, 0x40104000
- }
-};
-
-static const HALF PC2[8][64] = {
-/* table 0 */ {
- 0x00000000, 0x00001000, 0x04000000, 0x04001000,
- 0x00100000, 0x00101000, 0x04100000, 0x04101000,
- 0x00008000, 0x00009000, 0x04008000, 0x04009000,
- 0x00108000, 0x00109000, 0x04108000, 0x04109000,
- 0x00000004, 0x00001004, 0x04000004, 0x04001004,
- 0x00100004, 0x00101004, 0x04100004, 0x04101004,
- 0x00008004, 0x00009004, 0x04008004, 0x04009004,
- 0x00108004, 0x00109004, 0x04108004, 0x04109004,
- 0x08000000, 0x08001000, 0x0c000000, 0x0c001000,
- 0x08100000, 0x08101000, 0x0c100000, 0x0c101000,
- 0x08008000, 0x08009000, 0x0c008000, 0x0c009000,
- 0x08108000, 0x08109000, 0x0c108000, 0x0c109000,
- 0x08000004, 0x08001004, 0x0c000004, 0x0c001004,
- 0x08100004, 0x08101004, 0x0c100004, 0x0c101004,
- 0x08008004, 0x08009004, 0x0c008004, 0x0c009004,
- 0x08108004, 0x08109004, 0x0c108004, 0x0c109004
- },
-/* table 1 */ {
- 0x00000000, 0x00002000, 0x80000000, 0x80002000,
- 0x00000008, 0x00002008, 0x80000008, 0x80002008,
- 0x00200000, 0x00202000, 0x80200000, 0x80202000,
- 0x00200008, 0x00202008, 0x80200008, 0x80202008,
- 0x20000000, 0x20002000, 0xa0000000, 0xa0002000,
- 0x20000008, 0x20002008, 0xa0000008, 0xa0002008,
- 0x20200000, 0x20202000, 0xa0200000, 0xa0202000,
- 0x20200008, 0x20202008, 0xa0200008, 0xa0202008,
- 0x00000400, 0x00002400, 0x80000400, 0x80002400,
- 0x00000408, 0x00002408, 0x80000408, 0x80002408,
- 0x00200400, 0x00202400, 0x80200400, 0x80202400,
- 0x00200408, 0x00202408, 0x80200408, 0x80202408,
- 0x20000400, 0x20002400, 0xa0000400, 0xa0002400,
- 0x20000408, 0x20002408, 0xa0000408, 0xa0002408,
- 0x20200400, 0x20202400, 0xa0200400, 0xa0202400,
- 0x20200408, 0x20202408, 0xa0200408, 0xa0202408
- },
-/* table 2 */ {
- 0x00000000, 0x00004000, 0x00000020, 0x00004020,
- 0x00080000, 0x00084000, 0x00080020, 0x00084020,
- 0x00000800, 0x00004800, 0x00000820, 0x00004820,
- 0x00080800, 0x00084800, 0x00080820, 0x00084820,
- 0x00000010, 0x00004010, 0x00000030, 0x00004030,
- 0x00080010, 0x00084010, 0x00080030, 0x00084030,
- 0x00000810, 0x00004810, 0x00000830, 0x00004830,
- 0x00080810, 0x00084810, 0x00080830, 0x00084830,
- 0x00400000, 0x00404000, 0x00400020, 0x00404020,
- 0x00480000, 0x00484000, 0x00480020, 0x00484020,
- 0x00400800, 0x00404800, 0x00400820, 0x00404820,
- 0x00480800, 0x00484800, 0x00480820, 0x00484820,
- 0x00400010, 0x00404010, 0x00400030, 0x00404030,
- 0x00480010, 0x00484010, 0x00480030, 0x00484030,
- 0x00400810, 0x00404810, 0x00400830, 0x00404830,
- 0x00480810, 0x00484810, 0x00480830, 0x00484830
- },
-/* table 3 */ {
- 0x00000000, 0x40000000, 0x00000080, 0x40000080,
- 0x00040000, 0x40040000, 0x00040080, 0x40040080,
- 0x00000040, 0x40000040, 0x000000c0, 0x400000c0,
- 0x00040040, 0x40040040, 0x000400c0, 0x400400c0,
- 0x10000000, 0x50000000, 0x10000080, 0x50000080,
- 0x10040000, 0x50040000, 0x10040080, 0x50040080,
- 0x10000040, 0x50000040, 0x100000c0, 0x500000c0,
- 0x10040040, 0x50040040, 0x100400c0, 0x500400c0,
- 0x00800000, 0x40800000, 0x00800080, 0x40800080,
- 0x00840000, 0x40840000, 0x00840080, 0x40840080,
- 0x00800040, 0x40800040, 0x008000c0, 0x408000c0,
- 0x00840040, 0x40840040, 0x008400c0, 0x408400c0,
- 0x10800000, 0x50800000, 0x10800080, 0x50800080,
- 0x10840000, 0x50840000, 0x10840080, 0x50840080,
- 0x10800040, 0x50800040, 0x108000c0, 0x508000c0,
- 0x10840040, 0x50840040, 0x108400c0, 0x508400c0
- },
-/* table 4 */ {
- 0x00000000, 0x00000008, 0x08000000, 0x08000008,
- 0x00040000, 0x00040008, 0x08040000, 0x08040008,
- 0x00002000, 0x00002008, 0x08002000, 0x08002008,
- 0x00042000, 0x00042008, 0x08042000, 0x08042008,
- 0x80000000, 0x80000008, 0x88000000, 0x88000008,
- 0x80040000, 0x80040008, 0x88040000, 0x88040008,
- 0x80002000, 0x80002008, 0x88002000, 0x88002008,
- 0x80042000, 0x80042008, 0x88042000, 0x88042008,
- 0x00080000, 0x00080008, 0x08080000, 0x08080008,
- 0x000c0000, 0x000c0008, 0x080c0000, 0x080c0008,
- 0x00082000, 0x00082008, 0x08082000, 0x08082008,
- 0x000c2000, 0x000c2008, 0x080c2000, 0x080c2008,
- 0x80080000, 0x80080008, 0x88080000, 0x88080008,
- 0x800c0000, 0x800c0008, 0x880c0000, 0x880c0008,
- 0x80082000, 0x80082008, 0x88082000, 0x88082008,
- 0x800c2000, 0x800c2008, 0x880c2000, 0x880c2008
- },
-/* table 5 */ {
- 0x00000000, 0x00400000, 0x00008000, 0x00408000,
- 0x40000000, 0x40400000, 0x40008000, 0x40408000,
- 0x00000020, 0x00400020, 0x00008020, 0x00408020,
- 0x40000020, 0x40400020, 0x40008020, 0x40408020,
- 0x00001000, 0x00401000, 0x00009000, 0x00409000,
- 0x40001000, 0x40401000, 0x40009000, 0x40409000,
- 0x00001020, 0x00401020, 0x00009020, 0x00409020,
- 0x40001020, 0x40401020, 0x40009020, 0x40409020,
- 0x00100000, 0x00500000, 0x00108000, 0x00508000,
- 0x40100000, 0x40500000, 0x40108000, 0x40508000,
- 0x00100020, 0x00500020, 0x00108020, 0x00508020,
- 0x40100020, 0x40500020, 0x40108020, 0x40508020,
- 0x00101000, 0x00501000, 0x00109000, 0x00509000,
- 0x40101000, 0x40501000, 0x40109000, 0x40509000,
- 0x00101020, 0x00501020, 0x00109020, 0x00509020,
- 0x40101020, 0x40501020, 0x40109020, 0x40509020
- },
-/* table 6 */ {
- 0x00000000, 0x00000040, 0x04000000, 0x04000040,
- 0x00000800, 0x00000840, 0x04000800, 0x04000840,
- 0x00800000, 0x00800040, 0x04800000, 0x04800040,
- 0x00800800, 0x00800840, 0x04800800, 0x04800840,
- 0x10000000, 0x10000040, 0x14000000, 0x14000040,
- 0x10000800, 0x10000840, 0x14000800, 0x14000840,
- 0x10800000, 0x10800040, 0x14800000, 0x14800040,
- 0x10800800, 0x10800840, 0x14800800, 0x14800840,
- 0x00000080, 0x000000c0, 0x04000080, 0x040000c0,
- 0x00000880, 0x000008c0, 0x04000880, 0x040008c0,
- 0x00800080, 0x008000c0, 0x04800080, 0x048000c0,
- 0x00800880, 0x008008c0, 0x04800880, 0x048008c0,
- 0x10000080, 0x100000c0, 0x14000080, 0x140000c0,
- 0x10000880, 0x100008c0, 0x14000880, 0x140008c0,
- 0x10800080, 0x108000c0, 0x14800080, 0x148000c0,
- 0x10800880, 0x108008c0, 0x14800880, 0x148008c0
- },
-/* table 7 */ {
- 0x00000000, 0x00000010, 0x00000400, 0x00000410,
- 0x00000004, 0x00000014, 0x00000404, 0x00000414,
- 0x00004000, 0x00004010, 0x00004400, 0x00004410,
- 0x00004004, 0x00004014, 0x00004404, 0x00004414,
- 0x20000000, 0x20000010, 0x20000400, 0x20000410,
- 0x20000004, 0x20000014, 0x20000404, 0x20000414,
- 0x20004000, 0x20004010, 0x20004400, 0x20004410,
- 0x20004004, 0x20004014, 0x20004404, 0x20004414,
- 0x00200000, 0x00200010, 0x00200400, 0x00200410,
- 0x00200004, 0x00200014, 0x00200404, 0x00200414,
- 0x00204000, 0x00204010, 0x00204400, 0x00204410,
- 0x00204004, 0x00204014, 0x00204404, 0x00204414,
- 0x20200000, 0x20200010, 0x20200400, 0x20200410,
- 0x20200004, 0x20200014, 0x20200404, 0x20200414,
- 0x20204000, 0x20204010, 0x20204400, 0x20204410,
- 0x20204004, 0x20204014, 0x20204404, 0x20204414
- }
-};
-
-/*
- * The PC-1 Permutation
- * If we number the bits of the 8 bytes of key input like this (in octal):
- * 00 01 02 03 04 05 06 07
- * 10 11 12 13 14 15 16 17
- * 20 21 22 23 24 25 26 27
- * 30 31 32 33 34 35 36 37
- * 40 41 42 43 44 45 46 47
- * 50 51 52 53 54 55 56 57
- * 60 61 62 63 64 65 66 67
- * 70 71 72 73 74 75 76 77
- * then after the PC-1 permutation,
- * C0 is
- * 70 60 50 40 30 20 10 00
- * 71 61 51 41 31 21 11 01
- * 72 62 52 42 32 22 12 02
- * 73 63 53 43
- * D0 is
- * 76 66 56 46 36 26 16 06
- * 75 65 55 45 35 25 15 05
- * 74 64 54 44 34 24 14 04
- * 33 23 13 03
- * and these parity bits have been discarded:
- * 77 67 57 47 37 27 17 07
- *
- * We achieve this by flipping the input matrix about the diagonal from 70-07,
- * getting left =
- * 77 67 57 47 37 27 17 07 (these are the parity bits)
- * 76 66 56 46 36 26 16 06
- * 75 65 55 45 35 25 15 05
- * 74 64 54 44 34 24 14 04
- * right =
- * 73 63 53 43 33 23 13 03
- * 72 62 52 42 32 22 12 02
- * 71 61 51 41 31 21 11 01
- * 70 60 50 40 30 20 10 00
- * then byte swap right, ala htonl() on a little endian machine.
- * right =
- * 70 60 50 40 30 20 10 00
- * 71 67 57 47 37 27 11 07
- * 72 62 52 42 32 22 12 02
- * 73 63 53 43 33 23 13 03
- * then
- * c0 = right >> 4;
- * d0 = ((left & 0x00ffffff) << 4) | (right & 0xf);
-*/
-
-#define FLIP_RIGHT_DIAGONAL(word, temp) \
- temp = (word ^ (word >> 18)) & 0x00003333; \
- word ^= temp | (temp << 18); \
- temp = (word ^ (word >> 9)) & 0x00550055; \
- word ^= temp | (temp << 9);
-
-#if defined(__GNUC__) && defined(NSS_X86_OR_X64)
-#define BYTESWAP(word, temp) \
- __asm("bswap %0" : "+r" (word));
-#elif (_MSC_VER >= 1300) && defined(NSS_X86_OR_X64)
-#include <stdlib.h>
-#pragma intrinsic(_byteswap_ulong)
-#define BYTESWAP(word, temp) \
- word = _byteswap_ulong(word);
-#elif defined(__GNUC__) && (defined(__thumb2__) || \
- (!defined(__thumb__) && \
- (defined(__ARM_ARCH_6__) || \
- defined(__ARM_ARCH_6J__) || \
- defined(__ARM_ARCH_6K__) || \
- defined(__ARM_ARCH_6Z__) || \
- defined(__ARM_ARCH_6ZK__) || \
- defined(__ARM_ARCH_6T2__) || \
- defined(__ARM_ARCH_7__) || \
- defined(__ARM_ARCH_7A__) || \
- defined(__ARM_ARCH_7R__))))
-#define BYTESWAP(word, temp) \
- __asm("rev %0, %0" : "+r" (word));
-#else
-#define BYTESWAP(word, temp) \
- word = (word >> 16) | (word << 16); \
- temp = 0x00ff00ff; \
- word = ((word & temp) << 8) | ((word >> 8) & temp);
-#endif
-
-#define PC1(left, right, c0, d0, temp) \
- right ^= temp = ((left >> 4) ^ right) & 0x0f0f0f0f; \
- left ^= temp << 4; \
- FLIP_RIGHT_DIAGONAL(left, temp); \
- FLIP_RIGHT_DIAGONAL(right, temp); \
- BYTESWAP(right, temp); \
- c0 = right >> 4; \
- d0 = ((left & 0x00ffffff) << 4) | (right & 0xf);
-
-#define LEFT_SHIFT_1( reg ) (((reg << 1) | (reg >> 27)) & 0x0FFFFFFF)
-#define LEFT_SHIFT_2( reg ) (((reg << 2) | (reg >> 26)) & 0x0FFFFFFF)
-
-/*
- * setup key schedules from key
- */
-
-void
-DES_MakeSchedule( HALF * ks, const BYTE * key, DESDirection direction)
-{
- register HALF left, right;
- register HALF c0, d0;
- register HALF temp;
- int delta;
- unsigned int ls;
-
-#if defined(HAVE_UNALIGNED_ACCESS)
- left = HALFPTR(key)[0];
- right = HALFPTR(key)[1];
-#if defined(IS_LITTLE_ENDIAN)
- BYTESWAP(left, temp);
- BYTESWAP(right, temp);
-#endif
-#else
- if (((ptrdiff_t)key & 0x03) == 0) {
- left = HALFPTR(key)[0];
- right = HALFPTR(key)[1];
-#if defined(IS_LITTLE_ENDIAN)
- BYTESWAP(left, temp);
- BYTESWAP(right, temp);
-#endif
- } else {
- left = ((HALF)key[0] << 24) | ((HALF)key[1] << 16) |
- ((HALF)key[2] << 8) | key[3];
- right = ((HALF)key[4] << 24) | ((HALF)key[5] << 16) |
- ((HALF)key[6] << 8) | key[7];
- }
-#endif
-
- PC1(left, right, c0, d0, temp);
-
- if (direction == DES_ENCRYPT) {
- delta = 2 * (int)sizeof(HALF);
- } else {
- ks += 30;
- delta = (-2) * (int)sizeof(HALF);
- }
-
- for (ls = 0x8103; ls; ls >>= 1) {
- if ( ls & 1 ) {
- c0 = LEFT_SHIFT_1( c0 );
- d0 = LEFT_SHIFT_1( d0 );
- } else {
- c0 = LEFT_SHIFT_2( c0 );
- d0 = LEFT_SHIFT_2( d0 );
- }
-
-#ifdef USE_INDEXING
-#define PC2LOOKUP(b,c) PC2[b][c]
-
- left = PC2LOOKUP(0, ((c0 >> 22) & 0x3F) );
- left |= PC2LOOKUP(1, ((c0 >> 13) & 0x3F) );
- left |= PC2LOOKUP(2, ((c0 >> 4) & 0x38) | (c0 & 0x7) );
- left |= PC2LOOKUP(3, ((c0>>18)&0xC) | ((c0>>11)&0x3) | (c0&0x30));
-
- right = PC2LOOKUP(4, ((d0 >> 22) & 0x3F) );
- right |= PC2LOOKUP(5, ((d0 >> 15) & 0x30) | ((d0 >> 14) & 0xf) );
- right |= PC2LOOKUP(6, ((d0 >> 7) & 0x3F) );
- right |= PC2LOOKUP(7, ((d0 >> 1) & 0x3C) | (d0 & 0x3));
-#else
-#define PC2LOOKUP(b,c) *(HALF *)((BYTE *)&PC2[b][0]+(c))
-
- left = PC2LOOKUP(0, ((c0 >> 20) & 0xFC) );
- left |= PC2LOOKUP(1, ((c0 >> 11) & 0xFC) );
- left |= PC2LOOKUP(2, ((c0 >> 2) & 0xE0) | ((c0 << 2) & 0x1C) );
- left |= PC2LOOKUP(3, ((c0>>16)&0x30)|((c0>>9)&0xC)|((c0<<2)&0xC0));
-
- right = PC2LOOKUP(4, ((d0 >> 20) & 0xFC) );
- right |= PC2LOOKUP(5, ((d0 >> 13) & 0xC0) | ((d0 >> 12) & 0x3C) );
- right |= PC2LOOKUP(6, ((d0 >> 5) & 0xFC) );
- right |= PC2LOOKUP(7, ((d0 << 1) & 0xF0) | ((d0 << 2) & 0x0C));
-#endif
- /* left contains key bits for S1 S3 S2 S4 */
- /* right contains key bits for S6 S8 S5 S7 */
- temp = (left << 16) /* S2 S4 XX XX */
- | (right >> 16); /* XX XX S6 S8 */
- ks[0] = temp;
-
- temp = (left & 0xffff0000) /* S1 S3 XX XX */
- | (right & 0x0000ffff);/* XX XX S5 S7 */
- ks[1] = temp;
-
- ks = (HALF*)((BYTE *)ks + delta);
- }
-}
-
-/*
- * The DES Initial Permutation
- * if we number the bits of the 8 bytes of input like this (in octal):
- * 00 01 02 03 04 05 06 07
- * 10 11 12 13 14 15 16 17
- * 20 21 22 23 24 25 26 27
- * 30 31 32 33 34 35 36 37
- * 40 41 42 43 44 45 46 47
- * 50 51 52 53 54 55 56 57
- * 60 61 62 63 64 65 66 67
- * 70 71 72 73 74 75 76 77
- * then after the initial permutation, they will be in this order.
- * 71 61 51 41 31 21 11 01
- * 73 63 53 43 33 23 13 03
- * 75 65 55 45 35 25 15 05
- * 77 67 57 47 37 27 17 07
- * 70 60 50 40 30 20 10 00
- * 72 62 52 42 32 22 12 02
- * 74 64 54 44 34 24 14 04
- * 76 66 56 46 36 26 16 06
- *
- * One way to do this is in two steps:
- * 1. Flip this matrix about the diagonal from 70-07 as done for PC1.
- * 2. Rearrange the bytes (rows in the matrix above) with the following code.
- *
- * #define swapHiLo(word, temp) \
- * temp = (word ^ (word >> 24)) & 0x000000ff; \
- * word ^= temp | (temp << 24);
- *
- * right ^= temp = ((left << 8) ^ right) & 0xff00ff00;
- * left ^= temp >> 8;
- * swapHiLo(left, temp);
- * swapHiLo(right,temp);
- *
- * However, the two steps can be combined, so that the rows are rearranged
- * while the matrix is being flipped, reducing the number of bit exchange
- * operations from 8 ot 5.
- *
- * Initial Permutation */
-#define IP(left, right, temp) \
- right ^= temp = ((left >> 4) ^ right) & 0x0f0f0f0f; \
- left ^= temp << 4; \
- right ^= temp = ((left >> 16) ^ right) & 0x0000ffff; \
- left ^= temp << 16; \
- right ^= temp = ((left << 2) ^ right) & 0xcccccccc; \
- left ^= temp >> 2; \
- right ^= temp = ((left << 8) ^ right) & 0xff00ff00; \
- left ^= temp >> 8; \
- right ^= temp = ((left >> 1) ^ right) & 0x55555555; \
- left ^= temp << 1;
-
-/* The Final (Inverse Initial) permutation is done by reversing the
-** steps of the Initital Permutation
-*/
-
-#define FP(left, right, temp) \
- right ^= temp = ((left >> 1) ^ right) & 0x55555555; \
- left ^= temp << 1; \
- right ^= temp = ((left << 8) ^ right) & 0xff00ff00; \
- left ^= temp >> 8; \
- right ^= temp = ((left << 2) ^ right) & 0xcccccccc; \
- left ^= temp >> 2; \
- right ^= temp = ((left >> 16) ^ right) & 0x0000ffff; \
- left ^= temp << 16; \
- right ^= temp = ((left >> 4) ^ right) & 0x0f0f0f0f; \
- left ^= temp << 4;
-
-void
-DES_Do1Block(HALF * ks, const BYTE * inbuf, BYTE * outbuf)
-{
- register HALF left, right;
- register HALF temp;
-
-#if defined(HAVE_UNALIGNED_ACCESS)
- left = HALFPTR(inbuf)[0];
- right = HALFPTR(inbuf)[1];
-#if defined(IS_LITTLE_ENDIAN)
- BYTESWAP(left, temp);
- BYTESWAP(right, temp);
-#endif
-#else
- if (((ptrdiff_t)inbuf & 0x03) == 0) {
- left = HALFPTR(inbuf)[0];
- right = HALFPTR(inbuf)[1];
-#if defined(IS_LITTLE_ENDIAN)
- BYTESWAP(left, temp);
- BYTESWAP(right, temp);
-#endif
- } else {
- left = ((HALF)inbuf[0] << 24) | ((HALF)inbuf[1] << 16) |
- ((HALF)inbuf[2] << 8) | inbuf[3];
- right = ((HALF)inbuf[4] << 24) | ((HALF)inbuf[5] << 16) |
- ((HALF)inbuf[6] << 8) | inbuf[7];
- }
-#endif
-
- IP(left, right, temp);
-
- /* shift the values left circularly 3 bits. */
- left = (left << 3) | (left >> 29);
- right = (right << 3) | (right >> 29);
-
-#ifdef USE_INDEXING
-#define KSLOOKUP(s,b) SP[s][((temp >> (b+2)) & 0x3f)]
-#else
-#define KSLOOKUP(s,b) *(HALF*)((BYTE*)&SP[s][0]+((temp >> b) & 0xFC))
-#endif
-#define ROUND(out, in, r) \
- temp = in ^ ks[2*r]; \
- out ^= KSLOOKUP( 1, 24 ); \
- out ^= KSLOOKUP( 3, 16 ); \
- out ^= KSLOOKUP( 5, 8 ); \
- out ^= KSLOOKUP( 7, 0 ); \
- temp = ((in >> 4) | (in << 28)) ^ ks[2*r+1]; \
- out ^= KSLOOKUP( 0, 24 ); \
- out ^= KSLOOKUP( 2, 16 ); \
- out ^= KSLOOKUP( 4, 8 ); \
- out ^= KSLOOKUP( 6, 0 );
-
- /* Do the 16 Feistel rounds */
- ROUND(left, right, 0)
- ROUND(right, left, 1)
- ROUND(left, right, 2)
- ROUND(right, left, 3)
- ROUND(left, right, 4)
- ROUND(right, left, 5)
- ROUND(left, right, 6)
- ROUND(right, left, 7)
- ROUND(left, right, 8)
- ROUND(right, left, 9)
- ROUND(left, right, 10)
- ROUND(right, left, 11)
- ROUND(left, right, 12)
- ROUND(right, left, 13)
- ROUND(left, right, 14)
- ROUND(right, left, 15)
-
- /* now shift circularly right 3 bits to undo the shifting done
- ** above. switch left and right here.
- */
- temp = (left >> 3) | (left << 29);
- left = (right >> 3) | (right << 29);
- right = temp;
-
- FP(left, right, temp);
-
-#if defined(HAVE_UNALIGNED_ACCESS)
-#if defined(IS_LITTLE_ENDIAN)
- BYTESWAP(left, temp);
- BYTESWAP(right, temp);
-#endif
- HALFPTR(outbuf)[0] = left;
- HALFPTR(outbuf)[1] = right;
-#else
- if (((ptrdiff_t)outbuf & 0x03) == 0) {
-#if defined(IS_LITTLE_ENDIAN)
- BYTESWAP(left, temp);
- BYTESWAP(right, temp);
-#endif
- HALFPTR(outbuf)[0] = left;
- HALFPTR(outbuf)[1] = right;
- } else {
- outbuf[0] = (BYTE)(left >> 24);
- outbuf[1] = (BYTE)(left >> 16);
- outbuf[2] = (BYTE)(left >> 8);
- outbuf[3] = (BYTE)(left );
-
- outbuf[4] = (BYTE)(right >> 24);
- outbuf[5] = (BYTE)(right >> 16);
- outbuf[6] = (BYTE)(right >> 8);
- outbuf[7] = (BYTE)(right );
- }
-#endif
-
-}
-
-/* Ackowledgements:
-** Two ideas used in this implementation were shown to me by Dennis Ferguson
-** in 1990. He credits them to Richard Outerbridge and Dan Hoey. They were:
-** 1. The method of computing the Initial and Final permutations.
-** 2. Circularly rotating the SP tables and the initial values of left and
-** right to reduce the number of shifts required during the 16 rounds.
-*/
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