From c606f0866c3a2a5db3ef9bc41738ef33eb9612a9 Mon Sep 17 00:00:00 2001 From: Mounir IDRASSI Date: Sat, 22 Jun 2013 16:16:13 +0200 Subject: Add original TrueCrypt 7.1a sources --- src/Crypto/Des.c | 406 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 406 insertions(+) create mode 100644 src/Crypto/Des.c (limited to 'src/Crypto/Des.c') diff --git a/src/Crypto/Des.c b/src/Crypto/Des.c new file mode 100644 index 00000000..8f14d6c0 --- /dev/null +++ b/src/Crypto/Des.c @@ -0,0 +1,406 @@ +/* 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 +#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<>(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); +} -- cgit v1.2.3