#define rotl(x, c) ( (x << c) | (x >> (32-c)) )
#define rotl28(x, c) ( ( (x << c) | (x >> (28-c)) ) & 0x0FFFFFFF)
-static word32 bitsel(word32 *input, const int *bitnums, int size) {
+static word32 bitsel(word32 * input, const int *bitnums, int size)
+{
word32 ret = 0;
while (size--) {
- int bitpos = *bitnums++;
- ret <<= 1;
- if (bitpos >= 0)
- ret |= 1 & (input[bitpos / 32] >> (bitpos % 32));
+ int bitpos = *bitnums++;
+ ret <<= 1;
+ if (bitpos >= 0)
+ ret |= 1 & (input[bitpos / 32] >> (bitpos % 32));
}
return ret;
}
-void des_key_setup(word32 key_msw, word32 key_lsw, DESContext *sched) {
+void des_key_setup(word32 key_msw, word32 key_lsw, DESContext * sched)
+{
static const int PC1_Cbits[] = {
- 7, 15, 23, 31, 39, 47, 55, 63, 6, 14, 22, 30, 38, 46,
- 54, 62, 5, 13, 21, 29, 37, 45, 53, 61, 4, 12, 20, 28
+ 7, 15, 23, 31, 39, 47, 55, 63, 6, 14, 22, 30, 38, 46,
+ 54, 62, 5, 13, 21, 29, 37, 45, 53, 61, 4, 12, 20, 28
};
static const int PC1_Dbits[] = {
- 1, 9, 17, 25, 33, 41, 49, 57, 2, 10, 18, 26, 34, 42,
- 50, 58, 3, 11, 19, 27, 35, 43, 51, 59, 36, 44, 52, 60
+ 1, 9, 17, 25, 33, 41, 49, 57, 2, 10, 18, 26, 34, 42,
+ 50, 58, 3, 11, 19, 27, 35, 43, 51, 59, 36, 44, 52, 60
};
/*
* The bit numbers in the two lists below don't correspond to
* 0 of C is addressed by writing `32' here.
*/
static const int PC2_0246[] = {
- 49, 36, 59, 55, -1, -1, 37, 41, 48, 56, 34, 52, -1, -1, 15, 4,
- 25, 19, 9, 1, -1, -1, 12, 7, 17, 0, 22, 3, -1, -1, 46, 43
+ 49, 36, 59, 55, -1, -1, 37, 41, 48, 56, 34, 52, -1, -1, 15, 4,
+ 25, 19, 9, 1, -1, -1, 12, 7, 17, 0, 22, 3, -1, -1, 46, 43
};
static const int PC2_1357[] = {
- -1, -1, 57, 32, 45, 54, 39, 50, -1, -1, 44, 53, 33, 40, 47, 58,
- -1, -1, 26, 16, 5, 11, 23, 8, -1, -1, 10, 14, 6, 20, 27, 24
+ -1, -1, 57, 32, 45, 54, 39, 50, -1, -1, 44, 53, 33, 40, 47, 58,
+ -1, -1, 26, 16, 5, 11, 23, 8, -1, -1, 10, 14, 6, 20, 27, 24
};
- static const int leftshifts[] = {1,1,2,2,2,2,2,2,1,2,2,2,2,2,2,1};
+ static const int leftshifts[] =
+ { 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1 };
word32 C, D;
word32 buf[2];
D = bitsel(buf, PC1_Dbits, 28);
for (i = 0; i < 16; i++) {
- C = rotl28(C, leftshifts[i]);
- D = rotl28(D, leftshifts[i]);
- buf[0] = D;
- buf[1] = C;
- sched->k0246[i] = bitsel(buf, PC2_0246, 32);
- sched->k1357[i] = bitsel(buf, PC2_1357, 32);
+ C = rotl28(C, leftshifts[i]);
+ D = rotl28(D, leftshifts[i]);
+ buf[0] = D;
+ buf[1] = C;
+ sched->k0246[i] = bitsel(buf, PC2_0246, 32);
+ sched->k1357[i] = bitsel(buf, PC2_1357, 32);
}
sched->eiv0 = sched->eiv1 = 0;
- sched->div0 = sched->div1 = 0; /* for good measure */
+ sched->div0 = sched->div1 = 0; /* for good measure */
}
static const word32 SPboxes[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, 0x01010004L},
+ 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, 0x01010004L},
{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, 0x00108000L},
+ 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, 0x00108000L},
{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, 0x00020200L},
+ 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, 0x00020200L},
{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, 0x00802080L},
+ 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, 0x00802080L},
{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, 0x40000100L},
+ 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, 0x40000100L},
{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, 0x20004010L},
+ 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, 0x20004010L},
{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, 0x00200002L},
+ 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, 0x00200002L},
{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, 0x10041000L}
+ 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, 0x10041000L}
};
#define f(R, K0246, K1357) (\
bitswap(R, L, 16, 0x0000FFFF), \
bitswap(R, L, 4, 0x0F0F0F0F))
-void des_encipher(word32 *output, word32 L, word32 R, DESContext *sched) {
+void des_encipher(word32 * output, word32 L, word32 R, DESContext * sched)
+{
word32 swap, s0246, s1357;
IP(L, R);
L = rotl(L, 1);
R = rotl(R, 1);
- L ^= f(R, sched->k0246[ 0], sched->k1357[ 0]);
- R ^= f(L, sched->k0246[ 1], sched->k1357[ 1]);
- L ^= f(R, sched->k0246[ 2], sched->k1357[ 2]);
- R ^= f(L, sched->k0246[ 3], sched->k1357[ 3]);
- L ^= f(R, sched->k0246[ 4], sched->k1357[ 4]);
- R ^= f(L, sched->k0246[ 5], sched->k1357[ 5]);
- L ^= f(R, sched->k0246[ 6], sched->k1357[ 6]);
- R ^= f(L, sched->k0246[ 7], sched->k1357[ 7]);
- L ^= f(R, sched->k0246[ 8], sched->k1357[ 8]);
- R ^= f(L, sched->k0246[ 9], sched->k1357[ 9]);
+ L ^= f(R, sched->k0246[0], sched->k1357[0]);
+ R ^= f(L, sched->k0246[1], sched->k1357[1]);
+ L ^= f(R, sched->k0246[2], sched->k1357[2]);
+ R ^= f(L, sched->k0246[3], sched->k1357[3]);
+ L ^= f(R, sched->k0246[4], sched->k1357[4]);
+ R ^= f(L, sched->k0246[5], sched->k1357[5]);
+ L ^= f(R, sched->k0246[6], sched->k1357[6]);
+ R ^= f(L, sched->k0246[7], sched->k1357[7]);
+ L ^= f(R, sched->k0246[8], sched->k1357[8]);
+ R ^= f(L, sched->k0246[9], sched->k1357[9]);
L ^= f(R, sched->k0246[10], sched->k1357[10]);
R ^= f(L, sched->k0246[11], sched->k1357[11]);
L ^= f(R, sched->k0246[12], sched->k1357[12]);
L = rotl(L, 31);
R = rotl(R, 31);
- swap = L; L = R; R = swap;
+ swap = L;
+ L = R;
+ R = swap;
FP(L, R);
output[1] = R;
}
-void des_decipher(word32 *output, word32 L, word32 R, DESContext *sched) {
+void des_decipher(word32 * output, word32 L, word32 R, DESContext * sched)
+{
word32 swap, s0246, s1357;
IP(L, R);
R ^= f(L, sched->k0246[12], sched->k1357[12]);
L ^= f(R, sched->k0246[11], sched->k1357[11]);
R ^= f(L, sched->k0246[10], sched->k1357[10]);
- L ^= f(R, sched->k0246[ 9], sched->k1357[ 9]);
- R ^= f(L, sched->k0246[ 8], sched->k1357[ 8]);
- L ^= f(R, sched->k0246[ 7], sched->k1357[ 7]);
- R ^= f(L, sched->k0246[ 6], sched->k1357[ 6]);
- L ^= f(R, sched->k0246[ 5], sched->k1357[ 5]);
- R ^= f(L, sched->k0246[ 4], sched->k1357[ 4]);
- L ^= f(R, sched->k0246[ 3], sched->k1357[ 3]);
- R ^= f(L, sched->k0246[ 2], sched->k1357[ 2]);
- L ^= f(R, sched->k0246[ 1], sched->k1357[ 1]);
- R ^= f(L, sched->k0246[ 0], sched->k1357[ 0]);
+ L ^= f(R, sched->k0246[9], sched->k1357[9]);
+ R ^= f(L, sched->k0246[8], sched->k1357[8]);
+ L ^= f(R, sched->k0246[7], sched->k1357[7]);
+ R ^= f(L, sched->k0246[6], sched->k1357[6]);
+ L ^= f(R, sched->k0246[5], sched->k1357[5]);
+ R ^= f(L, sched->k0246[4], sched->k1357[4]);
+ L ^= f(R, sched->k0246[3], sched->k1357[3]);
+ R ^= f(L, sched->k0246[2], sched->k1357[2]);
+ L ^= f(R, sched->k0246[1], sched->k1357[1]);
+ R ^= f(L, sched->k0246[0], sched->k1357[0]);
L = rotl(L, 31);
R = rotl(R, 31);
- swap = L; L = R; R = swap;
+ swap = L;
+ L = R;
+ R = swap;
FP(L, R);
(cp)[0] = (value) >> 24; } while (0)
static void des_cbc_encrypt(unsigned char *dest, const unsigned char *src,
- unsigned int len, DESContext *sched) {
+ unsigned int len, DESContext * sched)
+{
word32 out[2], iv0, iv1;
unsigned int i;
iv0 = sched->eiv0;
iv1 = sched->eiv1;
for (i = 0; i < len; i += 8) {
- iv0 ^= GET_32BIT_MSB_FIRST(src); src += 4;
- iv1 ^= GET_32BIT_MSB_FIRST(src); src += 4;
- des_encipher(out, iv0, iv1, sched);
- iv0 = out[0];
- iv1 = out[1];
- PUT_32BIT_MSB_FIRST(dest, iv0); dest += 4;
- PUT_32BIT_MSB_FIRST(dest, iv1); dest += 4;
+ iv0 ^= GET_32BIT_MSB_FIRST(src);
+ src += 4;
+ iv1 ^= GET_32BIT_MSB_FIRST(src);
+ src += 4;
+ des_encipher(out, iv0, iv1, sched);
+ iv0 = out[0];
+ iv1 = out[1];
+ PUT_32BIT_MSB_FIRST(dest, iv0);
+ dest += 4;
+ PUT_32BIT_MSB_FIRST(dest, iv1);
+ dest += 4;
}
sched->eiv0 = iv0;
sched->eiv1 = iv1;
}
static void des_cbc_decrypt(unsigned char *dest, const unsigned char *src,
- unsigned int len, DESContext *sched) {
+ unsigned int len, DESContext * sched)
+{
word32 out[2], iv0, iv1, xL, xR;
unsigned int i;
iv0 = sched->div0;
iv1 = sched->div1;
for (i = 0; i < len; i += 8) {
- xL = GET_32BIT_MSB_FIRST(src); src += 4;
- xR = GET_32BIT_MSB_FIRST(src); src += 4;
- des_decipher(out, xL, xR, sched);
- iv0 ^= out[0];
- iv1 ^= out[1];
- PUT_32BIT_MSB_FIRST(dest, iv0); dest += 4;
- PUT_32BIT_MSB_FIRST(dest, iv1); dest += 4;
- iv0 = xL;
- iv1 = xR;
+ xL = GET_32BIT_MSB_FIRST(src);
+ src += 4;
+ xR = GET_32BIT_MSB_FIRST(src);
+ src += 4;
+ des_decipher(out, xL, xR, sched);
+ iv0 ^= out[0];
+ iv1 ^= out[1];
+ PUT_32BIT_MSB_FIRST(dest, iv0);
+ dest += 4;
+ PUT_32BIT_MSB_FIRST(dest, iv1);
+ dest += 4;
+ iv0 = xL;
+ iv1 = xR;
}
sched->div0 = iv0;
sched->div1 = iv1;
}
static void des_3cbc_encrypt(unsigned char *dest, const unsigned char *src,
- unsigned int len, DESContext *scheds) {
+ unsigned int len, DESContext * scheds)
+{
des_cbc_encrypt(dest, src, len, &scheds[0]);
des_cbc_decrypt(dest, src, len, &scheds[1]);
des_cbc_encrypt(dest, src, len, &scheds[2]);
}
static void des_cbc3_encrypt(unsigned char *dest, const unsigned char *src,
- unsigned int len, DESContext *scheds) {
+ unsigned int len, DESContext * scheds)
+{
word32 out[2], iv0, iv1;
unsigned int i;
iv0 = scheds->eiv0;
iv1 = scheds->eiv1;
for (i = 0; i < len; i += 8) {
- iv0 ^= GET_32BIT_MSB_FIRST(src); src += 4;
- iv1 ^= GET_32BIT_MSB_FIRST(src); src += 4;
- des_encipher(out, iv0, iv1, &scheds[0]);
- des_decipher(out, out[0], out[1], &scheds[1]);
- des_encipher(out, out[0], out[1], &scheds[2]);
- iv0 = out[0];
- iv1 = out[1];
- PUT_32BIT_MSB_FIRST(dest, iv0); dest += 4;
- PUT_32BIT_MSB_FIRST(dest, iv1); dest += 4;
+ iv0 ^= GET_32BIT_MSB_FIRST(src);
+ src += 4;
+ iv1 ^= GET_32BIT_MSB_FIRST(src);
+ src += 4;
+ des_encipher(out, iv0, iv1, &scheds[0]);
+ des_decipher(out, out[0], out[1], &scheds[1]);
+ des_encipher(out, out[0], out[1], &scheds[2]);
+ iv0 = out[0];
+ iv1 = out[1];
+ PUT_32BIT_MSB_FIRST(dest, iv0);
+ dest += 4;
+ PUT_32BIT_MSB_FIRST(dest, iv1);
+ dest += 4;
}
scheds->eiv0 = iv0;
scheds->eiv1 = iv1;
}
static void des_3cbc_decrypt(unsigned char *dest, const unsigned char *src,
- unsigned int len, DESContext *scheds) {
+ unsigned int len, DESContext * scheds)
+{
des_cbc_decrypt(dest, src, len, &scheds[2]);
des_cbc_encrypt(dest, src, len, &scheds[1]);
des_cbc_decrypt(dest, src, len, &scheds[0]);
}
static void des_cbc3_decrypt(unsigned char *dest, const unsigned char *src,
- unsigned int len, DESContext *scheds) {
+ unsigned int len, DESContext * scheds)
+{
word32 out[2], iv0, iv1, xL, xR;
unsigned int i;
iv0 = scheds->div0;
iv1 = scheds->div1;
for (i = 0; i < len; i += 8) {
- xL = GET_32BIT_MSB_FIRST(src); src += 4;
- xR = GET_32BIT_MSB_FIRST(src); src += 4;
- des_decipher(out, xL, xR, &scheds[2]);
- des_encipher(out, out[0], out[1], &scheds[1]);
- des_decipher(out, out[0], out[1], &scheds[0]);
- iv0 ^= out[0];
- iv1 ^= out[1];
- PUT_32BIT_MSB_FIRST(dest, iv0); dest += 4;
- PUT_32BIT_MSB_FIRST(dest, iv1); dest += 4;
- iv0 = xL;
- iv1 = xR;
+ xL = GET_32BIT_MSB_FIRST(src);
+ src += 4;
+ xR = GET_32BIT_MSB_FIRST(src);
+ src += 4;
+ des_decipher(out, xL, xR, &scheds[2]);
+ des_encipher(out, out[0], out[1], &scheds[1]);
+ des_decipher(out, out[0], out[1], &scheds[0]);
+ iv0 ^= out[0];
+ iv1 ^= out[1];
+ PUT_32BIT_MSB_FIRST(dest, iv0);
+ dest += 4;
+ PUT_32BIT_MSB_FIRST(dest, iv1);
+ dest += 4;
+ iv0 = xL;
+ iv1 = xR;
}
scheds->div0 = iv0;
scheds->div1 = iv1;
static DESContext cskeys[3], sckeys[3];
-static void des3_cskey(unsigned char *key) {
+static void des3_cskey(unsigned char *key)
+{
des_key_setup(GET_32BIT_MSB_FIRST(key),
- GET_32BIT_MSB_FIRST(key+4), &cskeys[0]);
- des_key_setup(GET_32BIT_MSB_FIRST(key+8),
- GET_32BIT_MSB_FIRST(key+12), &cskeys[1]);
- des_key_setup(GET_32BIT_MSB_FIRST(key+16),
- GET_32BIT_MSB_FIRST(key+20), &cskeys[2]);
+ GET_32BIT_MSB_FIRST(key + 4), &cskeys[0]);
+ des_key_setup(GET_32BIT_MSB_FIRST(key + 8),
+ GET_32BIT_MSB_FIRST(key + 12), &cskeys[1]);
+ des_key_setup(GET_32BIT_MSB_FIRST(key + 16),
+ GET_32BIT_MSB_FIRST(key + 20), &cskeys[2]);
logevent("Initialised triple-DES client->server encryption");
}
-static void des3_csiv(unsigned char *key) {
+static void des3_csiv(unsigned char *key)
+{
cskeys[0].eiv0 = GET_32BIT_MSB_FIRST(key);
- cskeys[0].eiv1 = GET_32BIT_MSB_FIRST(key+4);
+ cskeys[0].eiv1 = GET_32BIT_MSB_FIRST(key + 4);
}
-static void des3_sciv(unsigned char *key) {
+static void des3_sciv(unsigned char *key)
+{
sckeys[0].div0 = GET_32BIT_MSB_FIRST(key);
- sckeys[0].div1 = GET_32BIT_MSB_FIRST(key+4);
+ sckeys[0].div1 = GET_32BIT_MSB_FIRST(key + 4);
}
-static void des3_sckey(unsigned char *key) {
+static void des3_sckey(unsigned char *key)
+{
des_key_setup(GET_32BIT_MSB_FIRST(key),
- GET_32BIT_MSB_FIRST(key+4), &sckeys[0]);
- des_key_setup(GET_32BIT_MSB_FIRST(key+8),
- GET_32BIT_MSB_FIRST(key+12), &sckeys[1]);
- des_key_setup(GET_32BIT_MSB_FIRST(key+16),
- GET_32BIT_MSB_FIRST(key+20), &sckeys[2]);
+ GET_32BIT_MSB_FIRST(key + 4), &sckeys[0]);
+ des_key_setup(GET_32BIT_MSB_FIRST(key + 8),
+ GET_32BIT_MSB_FIRST(key + 12), &sckeys[1]);
+ des_key_setup(GET_32BIT_MSB_FIRST(key + 16),
+ GET_32BIT_MSB_FIRST(key + 20), &sckeys[2]);
logevent("Initialised triple-DES server->client encryption");
}
-static void des3_sesskey(unsigned char *key) {
+static void des3_sesskey(unsigned char *key)
+{
des3_cskey(key);
des3_sckey(key);
}
-static void des3_encrypt_blk(unsigned char *blk, int len) {
+static void des3_encrypt_blk(unsigned char *blk, int len)
+{
des_3cbc_encrypt(blk, blk, len, cskeys);
}
-static void des3_decrypt_blk(unsigned char *blk, int len) {
+static void des3_decrypt_blk(unsigned char *blk, int len)
+{
des_3cbc_decrypt(blk, blk, len, sckeys);
}
-static void des3_ssh2_encrypt_blk(unsigned char *blk, int len) {
+static void des3_ssh2_encrypt_blk(unsigned char *blk, int len)
+{
des_cbc3_encrypt(blk, blk, len, cskeys);
}
-static void des3_ssh2_decrypt_blk(unsigned char *blk, int len) {
+static void des3_ssh2_decrypt_blk(unsigned char *blk, int len)
+{
des_cbc3_decrypt(blk, blk, len, sckeys);
}
-void des3_decrypt_pubkey(unsigned char *key,
- unsigned char *blk, int len) {
+void des3_decrypt_pubkey(unsigned char *key, unsigned char *blk, int len)
+{
DESContext ourkeys[3];
des_key_setup(GET_32BIT_MSB_FIRST(key),
- GET_32BIT_MSB_FIRST(key+4), &ourkeys[0]);
- des_key_setup(GET_32BIT_MSB_FIRST(key+8),
- GET_32BIT_MSB_FIRST(key+12), &ourkeys[1]);
+ GET_32BIT_MSB_FIRST(key + 4), &ourkeys[0]);
+ des_key_setup(GET_32BIT_MSB_FIRST(key + 8),
+ GET_32BIT_MSB_FIRST(key + 12), &ourkeys[1]);
des_key_setup(GET_32BIT_MSB_FIRST(key),
- GET_32BIT_MSB_FIRST(key+4), &ourkeys[2]);
+ GET_32BIT_MSB_FIRST(key + 4), &ourkeys[2]);
des_3cbc_decrypt(blk, blk, len, ourkeys);
}
-void des3_encrypt_pubkey(unsigned char *key,
- unsigned char *blk, int len) {
+void des3_encrypt_pubkey(unsigned char *key, unsigned char *blk, int len)
+{
DESContext ourkeys[3];
des_key_setup(GET_32BIT_MSB_FIRST(key),
- GET_32BIT_MSB_FIRST(key+4), &ourkeys[0]);
- des_key_setup(GET_32BIT_MSB_FIRST(key+8),
- GET_32BIT_MSB_FIRST(key+12), &ourkeys[1]);
+ GET_32BIT_MSB_FIRST(key + 4), &ourkeys[0]);
+ des_key_setup(GET_32BIT_MSB_FIRST(key + 8),
+ GET_32BIT_MSB_FIRST(key + 12), &ourkeys[1]);
des_key_setup(GET_32BIT_MSB_FIRST(key),
- GET_32BIT_MSB_FIRST(key+4), &ourkeys[2]);
+ GET_32BIT_MSB_FIRST(key + 4), &ourkeys[2]);
des_3cbc_encrypt(blk, blk, len, ourkeys);
}
8
};
-static void des_sesskey(unsigned char *key) {
+static void des_sesskey(unsigned char *key)
+{
des_key_setup(GET_32BIT_MSB_FIRST(key),
- GET_32BIT_MSB_FIRST(key+4), &cskeys[0]);
+ GET_32BIT_MSB_FIRST(key + 4), &cskeys[0]);
logevent("Initialised single-DES encryption");
}
-static void des_encrypt_blk(unsigned char *blk, int len) {
+static void des_encrypt_blk(unsigned char *blk, int len)
+{
des_cbc_encrypt(blk, blk, len, cskeys);
}
-static void des_decrypt_blk(unsigned char *blk, int len) {
+static void des_decrypt_blk(unsigned char *blk, int len)
+{
des_cbc_decrypt(blk, blk, len, cskeys);
}
projects / u / mdw / putty / blobdiff