VeraCrypt
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diff --git a/src/Crypto/Des.c b/src/Crypto/Des.c
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+/* Deprecated/legacy */
+
+
+// des.cpp - modified by Wei Dai from Phil Karn's des.c
+// The original code and all modifications are in the public domain.
+
+/*
+ * This is a major rewrite of my old public domain DES code written
+ * circa 1987, which in turn borrowed heavily from Jim Gillogly's 1977
+ * public domain code. I pretty much kept my key scheduling code, but
+ * the actual encrypt/decrypt routines are taken from from Richard
+ * Outerbridge's DES code as printed in Schneier's "Applied Cryptography."
+ *
+ * This code is in the public domain. I would appreciate bug reports and
+ * enhancements.
+ *
+ * Phil Karn KA9Q, karn@unix.ka9q.ampr.org, August 1994.
+ */
+
+/* Adapted for TrueCrypt */
+
+#include <memory.h>
+#include "Common/Tcdefs.h"
+#include "Common/Endian.h"
+#include "Des.h"
+
+#define word32 unsigned __int32
+#define byte unsigned __int8
+
+static word32 rotlFixed (word32 x, unsigned int y)
+{
+ return (word32)((x<<y) | (x>>(sizeof(word32)*8-y)));
+}
+
+static word32 rotrFixed (word32 x, unsigned int y)
+{
+ return (word32)((x>>y) | (x<<(sizeof(word32)*8-y)));
+}
+
+
+/* Tables defined in the Data Encryption Standard documents
+ * Three of these tables, the initial permutation, the final
+ * permutation and the expansion operator, are regular enough that
+ * for speed, we hard-code them. They're here for reference only.
+ * Also, the S and P boxes are used by a separate program, gensp.c,
+ * to build the combined SP box, Spbox[]. They're also here just
+ * for reference.
+ */
+#ifdef notdef
+/* initial permutation IP */
+static byte ip[] = {
+ 58, 50, 42, 34, 26, 18, 10, 2,
+ 60, 52, 44, 36, 28, 20, 12, 4,
+ 62, 54, 46, 38, 30, 22, 14, 6,
+ 64, 56, 48, 40, 32, 24, 16, 8,
+ 57, 49, 41, 33, 25, 17, 9, 1,
+ 59, 51, 43, 35, 27, 19, 11, 3,
+ 61, 53, 45, 37, 29, 21, 13, 5,
+ 63, 55, 47, 39, 31, 23, 15, 7
+};
+
+/* final permutation IP^-1 */
+static byte fp[] = {
+ 40, 8, 48, 16, 56, 24, 64, 32,
+ 39, 7, 47, 15, 55, 23, 63, 31,
+ 38, 6, 46, 14, 54, 22, 62, 30,
+ 37, 5, 45, 13, 53, 21, 61, 29,
+ 36, 4, 44, 12, 52, 20, 60, 28,
+ 35, 3, 43, 11, 51, 19, 59, 27,
+ 34, 2, 42, 10, 50, 18, 58, 26,
+ 33, 1, 41, 9, 49, 17, 57, 25
+};
+/* expansion operation matrix */
+static byte ei[] = {
+ 32, 1, 2, 3, 4, 5,
+ 4, 5, 6, 7, 8, 9,
+ 8, 9, 10, 11, 12, 13,
+ 12, 13, 14, 15, 16, 17,
+ 16, 17, 18, 19, 20, 21,
+ 20, 21, 22, 23, 24, 25,
+ 24, 25, 26, 27, 28, 29,
+ 28, 29, 30, 31, 32, 1
+};
+/* The (in)famous S-boxes */
+static byte sbox[8][64] = {
+ /* S1 */
+ 14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7,
+ 0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8,
+ 4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9, 7, 3, 10, 5, 0,
+ 15, 12, 8, 2, 4, 9, 1, 7, 5, 11, 3, 14, 10, 0, 6, 13,
+
+ /* S2 */
+ 15, 1, 8, 14, 6, 11, 3, 4, 9, 7, 2, 13, 12, 0, 5, 10,
+ 3, 13, 4, 7, 15, 2, 8, 14, 12, 0, 1, 10, 6, 9, 11, 5,
+ 0, 14, 7, 11, 10, 4, 13, 1, 5, 8, 12, 6, 9, 3, 2, 15,
+ 13, 8, 10, 1, 3, 15, 4, 2, 11, 6, 7, 12, 0, 5, 14, 9,
+
+ /* S3 */
+ 10, 0, 9, 14, 6, 3, 15, 5, 1, 13, 12, 7, 11, 4, 2, 8,
+ 13, 7, 0, 9, 3, 4, 6, 10, 2, 8, 5, 14, 12, 11, 15, 1,
+ 13, 6, 4, 9, 8, 15, 3, 0, 11, 1, 2, 12, 5, 10, 14, 7,
+ 1, 10, 13, 0, 6, 9, 8, 7, 4, 15, 14, 3, 11, 5, 2, 12,
+
+ /* S4 */
+ 7, 13, 14, 3, 0, 6, 9, 10, 1, 2, 8, 5, 11, 12, 4, 15,
+ 13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9,
+ 10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3, 14, 5, 2, 8, 4,
+ 3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14,
+
+ /* S5 */
+ 2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9,
+ 14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6,
+ 4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12, 5, 6, 3, 0, 14,
+ 11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3,
+
+ /* S6 */
+ 12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11,
+ 10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8,
+ 9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4, 10, 1, 13, 11, 6,
+ 4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13,
+
+ /* S7 */
+ 4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1,
+ 13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6,
+ 1, 4, 11, 13, 12, 3, 7, 14, 10, 15, 6, 8, 0, 5, 9, 2,
+ 6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12,
+
+ /* S8 */
+ 13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7,
+ 1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2,
+ 7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10, 13, 15, 3, 5, 8,
+ 2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11
+};
+
+/* 32-bit permutation function P used on the output of the S-boxes */
+static byte p32i[] = {
+ 16, 7, 20, 21,
+ 29, 12, 28, 17,
+ 1, 15, 23, 26,
+ 5, 18, 31, 10,
+ 2, 8, 24, 14,
+ 32, 27, 3, 9,
+ 19, 13, 30, 6,
+ 22, 11, 4, 25
+};
+#endif
+
+/* permuted choice table (key) */
+static const byte pc1[] = {
+ 57, 49, 41, 33, 25, 17, 9,
+ 1, 58, 50, 42, 34, 26, 18,
+ 10, 2, 59, 51, 43, 35, 27,
+ 19, 11, 3, 60, 52, 44, 36,
+
+ 63, 55, 47, 39, 31, 23, 15,
+ 7, 62, 54, 46, 38, 30, 22,
+ 14, 6, 61, 53, 45, 37, 29,
+ 21, 13, 5, 28, 20, 12, 4
+};
+
+/* number left rotations of pc1 */
+static const byte totrot[] = {
+ 1,2,4,6,8,10,12,14,15,17,19,21,23,25,27,28
+};
+
+/* permuted choice key (table) */
+static const byte pc2[] = {
+ 14, 17, 11, 24, 1, 5,
+ 3, 28, 15, 6, 21, 10,
+ 23, 19, 12, 4, 26, 8,
+ 16, 7, 27, 20, 13, 2,
+ 41, 52, 31, 37, 47, 55,
+ 30, 40, 51, 45, 33, 48,
+ 44, 49, 39, 56, 34, 53,
+ 46, 42, 50, 36, 29, 32
+};
+
+/* End of DES-defined tables */
+
+/* bit 0 is left-most in byte */
+static const int bytebit[] = {
+ 0200,0100,040,020,010,04,02,01
+};
+
+static const word32 Spbox[8][64] = {
+{
+0x01010400,0x00000000,0x00010000,0x01010404, 0x01010004,0x00010404,0x00000004,0x00010000,
+0x00000400,0x01010400,0x01010404,0x00000400, 0x01000404,0x01010004,0x01000000,0x00000004,
+0x00000404,0x01000400,0x01000400,0x00010400, 0x00010400,0x01010000,0x01010000,0x01000404,
+0x00010004,0x01000004,0x01000004,0x00010004, 0x00000000,0x00000404,0x00010404,0x01000000,
+0x00010000,0x01010404,0x00000004,0x01010000, 0x01010400,0x01000000,0x01000000,0x00000400,
+0x01010004,0x00010000,0x00010400,0x01000004, 0x00000400,0x00000004,0x01000404,0x00010404,
+0x01010404,0x00010004,0x01010000,0x01000404, 0x01000004,0x00000404,0x00010404,0x01010400,
+0x00000404,0x01000400,0x01000400,0x00000000, 0x00010004,0x00010400,0x00000000,0x01010004},
+{
+0x80108020,0x80008000,0x00008000,0x00108020, 0x00100000,0x00000020,0x80100020,0x80008020,
+0x80000020,0x80108020,0x80108000,0x80000000, 0x80008000,0x00100000,0x00000020,0x80100020,
+0x00108000,0x00100020,0x80008020,0x00000000, 0x80000000,0x00008000,0x00108020,0x80100000,
+0x00100020,0x80000020,0x00000000,0x00108000, 0x00008020,0x80108000,0x80100000,0x00008020,
+0x00000000,0x00108020,0x80100020,0x00100000, 0x80008020,0x80100000,0x80108000,0x00008000,
+0x80100000,0x80008000,0x00000020,0x80108020, 0x00108020,0x00000020,0x00008000,0x80000000,
+0x00008020,0x80108000,0x00100000,0x80000020, 0x00100020,0x80008020,0x80000020,0x00100020,
+0x00108000,0x00000000,0x80008000,0x00008020, 0x80000000,0x80100020,0x80108020,0x00108000},
+{
+0x00000208,0x08020200,0x00000000,0x08020008, 0x08000200,0x00000000,0x00020208,0x08000200,
+0x00020008,0x08000008,0x08000008,0x00020000, 0x08020208,0x00020008,0x08020000,0x00000208,
+0x08000000,0x00000008,0x08020200,0x00000200, 0x00020200,0x08020000,0x08020008,0x00020208,
+0x08000208,0x00020200,0x00020000,0x08000208, 0x00000008,0x08020208,0x00000200,0x08000000,
+0x08020200,0x08000000,0x00020008,0x00000208, 0x00020000,0x08020200,0x08000200,0x00000000,
+0x00000200,0x00020008,0x08020208,0x08000200, 0x08000008,0x00000200,0x00000000,0x08020008,
+0x08000208,0x00020000,0x08000000,0x08020208, 0x00000008,0x00020208,0x00020200,0x08000008,
+0x08020000,0x08000208,0x00000208,0x08020000, 0x00020208,0x00000008,0x08020008,0x00020200},
+{
+0x00802001,0x00002081,0x00002081,0x00000080, 0x00802080,0x00800081,0x00800001,0x00002001,
+0x00000000,0x00802000,0x00802000,0x00802081, 0x00000081,0x00000000,0x00800080,0x00800001,
+0x00000001,0x00002000,0x00800000,0x00802001, 0x00000080,0x00800000,0x00002001,0x00002080,
+0x00800081,0x00000001,0x00002080,0x00800080, 0x00002000,0x00802080,0x00802081,0x00000081,
+0x00800080,0x00800001,0x00802000,0x00802081, 0x00000081,0x00000000,0x00000000,0x00802000,
+0x00002080,0x00800080,0x00800081,0x00000001, 0x00802001,0x00002081,0x00002081,0x00000080,
+0x00802081,0x00000081,0x00000001,0x00002000, 0x00800001,0x00002001,0x00802080,0x00800081,
+0x00002001,0x00002080,0x00800000,0x00802001, 0x00000080,0x00800000,0x00002000,0x00802080},
+{
+0x00000100,0x02080100,0x02080000,0x42000100, 0x00080000,0x00000100,0x40000000,0x02080000,
+0x40080100,0x00080000,0x02000100,0x40080100, 0x42000100,0x42080000,0x00080100,0x40000000,
+0x02000000,0x40080000,0x40080000,0x00000000, 0x40000100,0x42080100,0x42080100,0x02000100,
+0x42080000,0x40000100,0x00000000,0x42000000, 0x02080100,0x02000000,0x42000000,0x00080100,
+0x00080000,0x42000100,0x00000100,0x02000000, 0x40000000,0x02080000,0x42000100,0x40080100,
+0x02000100,0x40000000,0x42080000,0x02080100, 0x40080100,0x00000100,0x02000000,0x42080000,
+0x42080100,0x00080100,0x42000000,0x42080100, 0x02080000,0x00000000,0x40080000,0x42000000,
+0x00080100,0x02000100,0x40000100,0x00080000, 0x00000000,0x40080000,0x02080100,0x40000100},
+{
+0x20000010,0x20400000,0x00004000,0x20404010, 0x20400000,0x00000010,0x20404010,0x00400000,
+0x20004000,0x00404010,0x00400000,0x20000010, 0x00400010,0x20004000,0x20000000,0x00004010,
+0x00000000,0x00400010,0x20004010,0x00004000, 0x00404000,0x20004010,0x00000010,0x20400010,
+0x20400010,0x00000000,0x00404010,0x20404000, 0x00004010,0x00404000,0x20404000,0x20000000,
+0x20004000,0x00000010,0x20400010,0x00404000, 0x20404010,0x00400000,0x00004010,0x20000010,
+0x00400000,0x20004000,0x20000000,0x00004010, 0x20000010,0x20404010,0x00404000,0x20400000,
+0x00404010,0x20404000,0x00000000,0x20400010, 0x00000010,0x00004000,0x20400000,0x00404010,
+0x00004000,0x00400010,0x20004010,0x00000000, 0x20404000,0x20000000,0x00400010,0x20004010},
+{
+0x00200000,0x04200002,0x04000802,0x00000000, 0x00000800,0x04000802,0x00200802,0x04200800,
+0x04200802,0x00200000,0x00000000,0x04000002, 0x00000002,0x04000000,0x04200002,0x00000802,
+0x04000800,0x00200802,0x00200002,0x04000800, 0x04000002,0x04200000,0x04200800,0x00200002,
+0x04200000,0x00000800,0x00000802,0x04200802, 0x00200800,0x00000002,0x04000000,0x00200800,
+0x04000000,0x00200800,0x00200000,0x04000802, 0x04000802,0x04200002,0x04200002,0x00000002,
+0x00200002,0x04000000,0x04000800,0x00200000, 0x04200800,0x00000802,0x00200802,0x04200800,
+0x00000802,0x04000002,0x04200802,0x04200000, 0x00200800,0x00000000,0x00000002,0x04200802,
+0x00000000,0x00200802,0x04200000,0x00000800, 0x04000002,0x04000800,0x00000800,0x00200002},
+{
+0x10001040,0x00001000,0x00040000,0x10041040, 0x10000000,0x10001040,0x00000040,0x10000000,
+0x00040040,0x10040000,0x10041040,0x00041000, 0x10041000,0x00041040,0x00001000,0x00000040,
+0x10040000,0x10000040,0x10001000,0x00001040, 0x00041000,0x00040040,0x10040040,0x10041000,
+0x00001040,0x00000000,0x00000000,0x10040040, 0x10000040,0x10001000,0x00041040,0x00040000,
+0x00041040,0x00040000,0x10041000,0x00001000, 0x00000040,0x10040040,0x00001000,0x00041040,
+0x10001000,0x00000040,0x10000040,0x10040000, 0x10040040,0x10000000,0x00040000,0x10001040,
+0x00000000,0x10041040,0x00040040,0x10000040, 0x10040000,0x10001000,0x10001040,0x00000000,
+0x10041040,0x00041000,0x00041000,0x00001040, 0x00001040,0x00040040,0x10000000,0x10041000}
+};
+
+/* Set key (initialize key schedule array) */
+static void RawSetKey (int encryption, const byte *key, word32 *scheduledKey)
+{
+ byte buffer[56+56+8];
+ byte *const pc1m=buffer; /* place to modify pc1 into */
+ byte *const pcr=pc1m+56; /* place to rotate pc1 into */
+ byte *const ks=pcr+56;
+ register int i,j,l;
+ int m;
+
+ for (j=0; j<56; j++) { /* convert pc1 to bits of key */
+ l=pc1[j]-1; /* integer bit location */
+ m = l & 07; /* find bit */
+ pc1m[j]=(key[l>>3] & /* find which key byte l is in */
+ bytebit[m]) /* and which bit of that byte */
+ ? 1 : 0; /* and store 1-bit result */
+ }
+ for (i=0; i<16; i++) { /* key chunk for each iteration */
+ memset(ks,0,8); /* Clear key schedule */
+ for (j=0; j<56; j++) /* rotate pc1 the right amount */
+ pcr[j] = pc1m[(l=j+totrot[i])<(j<28? 28 : 56) ? l: l-28];
+ /* rotate left and right halves independently */
+ for (j=0; j<48; j++){ /* select bits individually */
+ /* check bit that goes to ks[j] */
+ if (pcr[pc2[j]-1]){
+ /* mask it in if it's there */
+ l= j % 6;
+ ks[j/6] |= bytebit[l] >> 2;
+ }
+ }
+ /* Now convert to odd/even interleaved form for use in F */
+ scheduledKey[2*i] = ((word32)ks[0] << 24)
+ | ((word32)ks[2] << 16)
+ | ((word32)ks[4] << 8)
+ | ((word32)ks[6]);
+ scheduledKey[2*i+1] = ((word32)ks[1] << 24)
+ | ((word32)ks[3] << 16)
+ | ((word32)ks[5] << 8)
+ | ((word32)ks[7]);
+ }
+
+ if (!encryption) // reverse key schedule order
+ for (i=0; i<16; i+=2)
+ {
+ word32 b = scheduledKey[i];
+ scheduledKey[i] = scheduledKey[32-2-i];
+ scheduledKey[32-2-i] = b;
+
+ b = scheduledKey[i+1];
+ scheduledKey[i+1] = scheduledKey[32-1-i];
+ scheduledKey[32-1-i] = b;
+ }
+
+ burn (buffer, sizeof (buffer));
+}
+
+static void RawProcessBlock(word32 *l_, word32 *r_, const word32 *k)
+{
+ word32 l = *l_, r = *r_;
+ const word32 *kptr=k;
+ unsigned i;
+
+ for (i=0; i<8; i++)
+ {
+ word32 work = rotrFixed(r, 4U) ^ kptr[4*i+0];
+ l ^= Spbox[6][(work) & 0x3f]
+ ^ Spbox[4][(work >> 8) & 0x3f]
+ ^ Spbox[2][(work >> 16) & 0x3f]
+ ^ Spbox[0][(work >> 24) & 0x3f];
+ work = r ^ kptr[4*i+1];
+ l ^= Spbox[7][(work) & 0x3f]
+ ^ Spbox[5][(work >> 8) & 0x3f]
+ ^ Spbox[3][(work >> 16) & 0x3f]
+ ^ Spbox[1][(work >> 24) & 0x3f];
+
+ work = rotrFixed(l, 4U) ^ kptr[4*i+2];
+ r ^= Spbox[6][(work) & 0x3f]
+ ^ Spbox[4][(work >> 8) & 0x3f]
+ ^ Spbox[2][(work >> 16) & 0x3f]
+ ^ Spbox[0][(work >> 24) & 0x3f];
+ work = l ^ kptr[4*i+3];
+ r ^= Spbox[7][(work) & 0x3f]
+ ^ Spbox[5][(work >> 8) & 0x3f]
+ ^ Spbox[3][(work >> 16) & 0x3f]
+ ^ Spbox[1][(work >> 24) & 0x3f];
+ }
+
+ *l_ = l; *r_ = r;
+}
+
+void TripleDesSetKey (const byte *userKey, unsigned int length, TDES_KEY *ks)
+{
+ RawSetKey (1, userKey + 0, ks->k1);
+ RawSetKey (1, userKey + 8, ks->k2);
+ RawSetKey (1, userKey + 16, ks->k3);
+ RawSetKey (0, userKey + 16, ks->k1d);
+ RawSetKey (0, userKey + 8, ks->k2d);
+ RawSetKey (0, userKey + 0, ks->k3d);
+}
+
+void TripleDesEncrypt (byte *inBlock, byte *outBlock, TDES_KEY *key, int encrypt)
+{
+ word32 left = BE32 (((word32 *)inBlock)[0]);
+ word32 right = BE32 (((word32 *)inBlock)[1]);
+ word32 work;
+
+ right = rotlFixed(right, 4U);
+ work = (left ^ right) & 0xf0f0f0f0;
+ left ^= work;
+ right = rotrFixed(right^work, 20U);
+ work = (left ^ right) & 0xffff0000;
+ left ^= work;
+ right = rotrFixed(right^work, 18U);
+ work = (left ^ right) & 0x33333333;
+ left ^= work;
+ right = rotrFixed(right^work, 6U);
+ work = (left ^ right) & 0x00ff00ff;
+ left ^= work;
+ right = rotlFixed(right^work, 9U);
+ work = (left ^ right) & 0xaaaaaaaa;
+ left = rotlFixed(left^work, 1U);
+ right ^= work;
+
+ RawProcessBlock (&left, &right, encrypt ? key->k1 : key->k1d);
+ RawProcessBlock (&right, &left, !encrypt ? key->k2 : key->k2d);
+ RawProcessBlock (&left, &right, encrypt ? key->k3 : key->k3d);
+
+ right = rotrFixed(right, 1U);
+ work = (left ^ right) & 0xaaaaaaaa;
+ right ^= work;
+ left = rotrFixed(left^work, 9U);
+ work = (left ^ right) & 0x00ff00ff;
+ right ^= work;
+ left = rotlFixed(left^work, 6U);
+ work = (left ^ right) & 0x33333333;
+ right ^= work;
+ left = rotlFixed(left^work, 18U);
+ work = (left ^ right) & 0xffff0000;
+ right ^= work;
+ left = rotlFixed(left^work, 20U);
+ work = (left ^ right) & 0xf0f0f0f0;
+ right ^= work;
+ left = rotrFixed(left^work, 4U);
+
+ ((word32 *)outBlock)[0] = BE32 (right);
+ ((word32 *)outBlock)[1] = BE32 (left);
+}