diff options
author | cinap_lenrek <cinap_lenrek@felloff.net> | 2013-11-23 01:05:33 +0100 |
---|---|---|
committer | cinap_lenrek <cinap_lenrek@felloff.net> | 2013-11-23 01:05:33 +0100 |
commit | 2f9ae0f8ac8610e13ced184847b57b87fe5db580 (patch) | |
tree | f9ad2223d518585a2cfe9ea1c73e1e37d07bf637 /sys/src/cmd/unix/drawterm/libsec/des.c | |
parent | ea5797c0731203c09ec5fb7172e77eab2750f1a9 (diff) |
removing (outdated) drawterm
drawterm is much better maintained by russ cox,
so removing this outdated copy.
for a more recent version, go to:
http://swtch.com/drawterm/
Diffstat (limited to 'sys/src/cmd/unix/drawterm/libsec/des.c')
-rw-r--r-- | sys/src/cmd/unix/drawterm/libsec/des.c | 480 |
1 files changed, 0 insertions, 480 deletions
diff --git a/sys/src/cmd/unix/drawterm/libsec/des.c b/sys/src/cmd/unix/drawterm/libsec/des.c deleted file mode 100644 index c54541c58..000000000 --- a/sys/src/cmd/unix/drawterm/libsec/des.c +++ /dev/null @@ -1,480 +0,0 @@ -#include "os.h" -#include <libsec.h> - -/* - * integrated sbox & p perm - */ -static u32int spbox[] = { - -0x00808200,0x00000000,0x00008000,0x00808202,0x00808002,0x00008202,0x00000002,0x00008000, -0x00000200,0x00808200,0x00808202,0x00000200,0x00800202,0x00808002,0x00800000,0x00000002, -0x00000202,0x00800200,0x00800200,0x00008200,0x00008200,0x00808000,0x00808000,0x00800202, -0x00008002,0x00800002,0x00800002,0x00008002,0x00000000,0x00000202,0x00008202,0x00800000, -0x00008000,0x00808202,0x00000002,0x00808000,0x00808200,0x00800000,0x00800000,0x00000200, -0x00808002,0x00008000,0x00008200,0x00800002,0x00000200,0x00000002,0x00800202,0x00008202, -0x00808202,0x00008002,0x00808000,0x00800202,0x00800002,0x00000202,0x00008202,0x00808200, -0x00000202,0x00800200,0x00800200,0x00000000,0x00008002,0x00008200,0x00000000,0x00808002, - -0x40084010,0x40004000,0x00004000,0x00084010,0x00080000,0x00000010,0x40080010,0x40004010, -0x40000010,0x40084010,0x40084000,0x40000000,0x40004000,0x00080000,0x00000010,0x40080010, -0x00084000,0x00080010,0x40004010,0x00000000,0x40000000,0x00004000,0x00084010,0x40080000, -0x00080010,0x40000010,0x00000000,0x00084000,0x00004010,0x40084000,0x40080000,0x00004010, -0x00000000,0x00084010,0x40080010,0x00080000,0x40004010,0x40080000,0x40084000,0x00004000, -0x40080000,0x40004000,0x00000010,0x40084010,0x00084010,0x00000010,0x00004000,0x40000000, -0x00004010,0x40084000,0x00080000,0x40000010,0x00080010,0x40004010,0x40000010,0x00080010, -0x00084000,0x00000000,0x40004000,0x00004010,0x40000000,0x40080010,0x40084010,0x00084000, - -0x00000104,0x04010100,0x00000000,0x04010004,0x04000100,0x00000000,0x00010104,0x04000100, -0x00010004,0x04000004,0x04000004,0x00010000,0x04010104,0x00010004,0x04010000,0x00000104, -0x04000000,0x00000004,0x04010100,0x00000100,0x00010100,0x04010000,0x04010004,0x00010104, -0x04000104,0x00010100,0x00010000,0x04000104,0x00000004,0x04010104,0x00000100,0x04000000, -0x04010100,0x04000000,0x00010004,0x00000104,0x00010000,0x04010100,0x04000100,0x00000000, -0x00000100,0x00010004,0x04010104,0x04000100,0x04000004,0x00000100,0x00000000,0x04010004, -0x04000104,0x00010000,0x04000000,0x04010104,0x00000004,0x00010104,0x00010100,0x04000004, -0x04010000,0x04000104,0x00000104,0x04010000,0x00010104,0x00000004,0x04010004,0x00010100, - -0x80401000,0x80001040,0x80001040,0x00000040,0x00401040,0x80400040,0x80400000,0x80001000, -0x00000000,0x00401000,0x00401000,0x80401040,0x80000040,0x00000000,0x00400040,0x80400000, -0x80000000,0x00001000,0x00400000,0x80401000,0x00000040,0x00400000,0x80001000,0x00001040, -0x80400040,0x80000000,0x00001040,0x00400040,0x00001000,0x00401040,0x80401040,0x80000040, -0x00400040,0x80400000,0x00401000,0x80401040,0x80000040,0x00000000,0x00000000,0x00401000, -0x00001040,0x00400040,0x80400040,0x80000000,0x80401000,0x80001040,0x80001040,0x00000040, -0x80401040,0x80000040,0x80000000,0x00001000,0x80400000,0x80001000,0x00401040,0x80400040, -0x80001000,0x00001040,0x00400000,0x80401000,0x00000040,0x00400000,0x00001000,0x00401040, - -0x00000080,0x01040080,0x01040000,0x21000080,0x00040000,0x00000080,0x20000000,0x01040000, -0x20040080,0x00040000,0x01000080,0x20040080,0x21000080,0x21040000,0x00040080,0x20000000, -0x01000000,0x20040000,0x20040000,0x00000000,0x20000080,0x21040080,0x21040080,0x01000080, -0x21040000,0x20000080,0x00000000,0x21000000,0x01040080,0x01000000,0x21000000,0x00040080, -0x00040000,0x21000080,0x00000080,0x01000000,0x20000000,0x01040000,0x21000080,0x20040080, -0x01000080,0x20000000,0x21040000,0x01040080,0x20040080,0x00000080,0x01000000,0x21040000, -0x21040080,0x00040080,0x21000000,0x21040080,0x01040000,0x00000000,0x20040000,0x21000000, -0x00040080,0x01000080,0x20000080,0x00040000,0x00000000,0x20040000,0x01040080,0x20000080, - -0x10000008,0x10200000,0x00002000,0x10202008,0x10200000,0x00000008,0x10202008,0x00200000, -0x10002000,0x00202008,0x00200000,0x10000008,0x00200008,0x10002000,0x10000000,0x00002008, -0x00000000,0x00200008,0x10002008,0x00002000,0x00202000,0x10002008,0x00000008,0x10200008, -0x10200008,0x00000000,0x00202008,0x10202000,0x00002008,0x00202000,0x10202000,0x10000000, -0x10002000,0x00000008,0x10200008,0x00202000,0x10202008,0x00200000,0x00002008,0x10000008, -0x00200000,0x10002000,0x10000000,0x00002008,0x10000008,0x10202008,0x00202000,0x10200000, -0x00202008,0x10202000,0x00000000,0x10200008,0x00000008,0x00002000,0x10200000,0x00202008, -0x00002000,0x00200008,0x10002008,0x00000000,0x10202000,0x10000000,0x00200008,0x10002008, - -0x00100000,0x02100001,0x02000401,0x00000000,0x00000400,0x02000401,0x00100401,0x02100400, -0x02100401,0x00100000,0x00000000,0x02000001,0x00000001,0x02000000,0x02100001,0x00000401, -0x02000400,0x00100401,0x00100001,0x02000400,0x02000001,0x02100000,0x02100400,0x00100001, -0x02100000,0x00000400,0x00000401,0x02100401,0x00100400,0x00000001,0x02000000,0x00100400, -0x02000000,0x00100400,0x00100000,0x02000401,0x02000401,0x02100001,0x02100001,0x00000001, -0x00100001,0x02000000,0x02000400,0x00100000,0x02100400,0x00000401,0x00100401,0x02100400, -0x00000401,0x02000001,0x02100401,0x02100000,0x00100400,0x00000000,0x00000001,0x02100401, -0x00000000,0x00100401,0x02100000,0x00000400,0x02000001,0x02000400,0x00000400,0x00100001, - -0x08000820,0x00000800,0x00020000,0x08020820,0x08000000,0x08000820,0x00000020,0x08000000, -0x00020020,0x08020000,0x08020820,0x00020800,0x08020800,0x00020820,0x00000800,0x00000020, -0x08020000,0x08000020,0x08000800,0x00000820,0x00020800,0x00020020,0x08020020,0x08020800, -0x00000820,0x00000000,0x00000000,0x08020020,0x08000020,0x08000800,0x00020820,0x00020000, -0x00020820,0x00020000,0x08020800,0x00000800,0x00000020,0x08020020,0x00000800,0x00020820, -0x08000800,0x00000020,0x08000020,0x08020000,0x08020020,0x08000000,0x00020000,0x08000820, -0x00000000,0x08020820,0x00020020,0x08000020,0x08020000,0x08000800,0x08000820,0x00000000, -0x08020820,0x00020800,0x00020800,0x00000820,0x00000820,0x00020020,0x08000000,0x08020800, -}; - -/* - * for manual index calculation - * #define fetch(box, i, sh) (*((u32int*)((uchar*)spbox + (box << 8) + ((i >> (sh)) & 0xfc)))) - */ -#define fetch(box, i, sh) ((spbox+(box << 6))[((i >> (sh + 2)) & 0x3f)]) - -/* - * DES electronic codebook encryption of one block - */ -void -block_cipher(ulong key[32], uchar text[8], int decrypting) -{ - u32int right, left, v0, v1; - int i, keystep; - - /* - * initial permutation - */ - v0 = text[0] | ((u32int)text[2]<<8) | ((u32int)text[4]<<16) | ((u32int)text[6]<<24); - left = text[1] | ((u32int)text[3]<<8) | ((u32int)text[5]<<16) | ((u32int)text[7]<<24); - right = (left & 0xaaaaaaaa) | ((v0 >> 1) & 0x55555555); - left = ((left << 1) & 0xaaaaaaaa) | (v0 & 0x55555555); - left = ((left << 6) & 0x33003300) - | (left & 0xcc33cc33) - | ((left >> 6) & 0x00cc00cc); - left = ((left << 12) & 0x0f0f0000) - | (left & 0xf0f00f0f) - | ((left >> 12) & 0x0000f0f0); - right = ((right << 6) & 0x33003300) - | (right & 0xcc33cc33) - | ((right >> 6) & 0x00cc00cc); - right = ((right << 12) & 0x0f0f0000) - | (right & 0xf0f00f0f) - | ((right >> 12) & 0x0000f0f0); - - if (decrypting) { - keystep = -2; - key = key + 32 - 2; - } else - keystep = 2; - for (i = 0; i < 8; i++) { - v0 = key[0]; - v0 ^= (right >> 1) | (right << 31); - left ^= fetch(0, v0, 24) - ^ fetch(2, v0, 16) - ^ fetch(4, v0, 8) - ^ fetch(6, v0, 0); - v1 = key[1]; - v1 ^= (right << 3) | (right >> 29); - left ^= fetch(1, v1, 24) - ^ fetch(3, v1, 16) - ^ fetch(5, v1, 8) - ^ fetch(7, v1, 0); - key += keystep; - - v0 = key[0]; - v0 ^= (left >> 1) | (left << 31); - right ^= fetch(0, v0, 24) - ^ fetch(2, v0, 16) - ^ fetch(4, v0, 8) - ^ fetch(6, v0, 0); - v1 = key[1]; - v1 ^= (left << 3) | (left >> 29); - right ^= fetch(1, v1, 24) - ^ fetch(3, v1, 16) - ^ fetch(5, v1, 8) - ^ fetch(7, v1, 0); - key += keystep; - } - - /* - * final permutation, inverse initial permutation - */ - v0 = ((left << 1) & 0xaaaaaaaa) | (right & 0x55555555); - v1 = (left & 0xaaaaaaaa) | ((right >> 1) & 0x55555555); - v1 = ((v1 << 6) & 0x33003300) - | (v1 & 0xcc33cc33) - | ((v1 >> 6) & 0x00cc00cc); - v1 = ((v1 << 12) & 0x0f0f0000) - | (v1 & 0xf0f00f0f) - | ((v1 >> 12) & 0x0000f0f0); - v0 = ((v0 << 6) & 0x33003300) - | (v0 & 0xcc33cc33) - | ((v0 >> 6) & 0x00cc00cc); - v0 = ((v0 << 12) & 0x0f0f0000) - | (v0 & 0xf0f00f0f) - | ((v0 >> 12) & 0x0000f0f0); - text[0] = v0; - text[2] = v0 >> 8; - text[4] = v0 >> 16; - text[6] = v0 >> 24; - text[1] = v1; - text[3] = v1 >> 8; - text[5] = v1 >> 16; - text[7] = v1 >> 24; -} - -/* - * triple DES electronic codebook encryption of one block - */ -void -triple_block_cipher(ulong expanded_key[3][32], uchar text[8], int ende) -{ - ulong *key; - u32int right, left, v0, v1; - int i, j, keystep; - - /* - * initial permutation - */ - v0 = text[0] | ((u32int)text[2]<<8) | ((u32int)text[4]<<16) | ((u32int)text[6]<<24); - left = text[1] | ((u32int)text[3]<<8) | ((u32int)text[5]<<16) | ((u32int)text[7]<<24); - right = (left & 0xaaaaaaaa) | ((v0 >> 1) & 0x55555555); - left = ((left << 1) & 0xaaaaaaaa) | (v0 & 0x55555555); - left = ((left << 6) & 0x33003300) - | (left & 0xcc33cc33) - | ((left >> 6) & 0x00cc00cc); - left = ((left << 12) & 0x0f0f0000) - | (left & 0xf0f00f0f) - | ((left >> 12) & 0x0000f0f0); - right = ((right << 6) & 0x33003300) - | (right & 0xcc33cc33) - | ((right >> 6) & 0x00cc00cc); - right = ((right << 12) & 0x0f0f0000) - | (right & 0xf0f00f0f) - | ((right >> 12) & 0x0000f0f0); - - for(j = 0; j < 3; j++){ - if((ende & 1) == DES3D) { - key = &expanded_key[2-j][32-2]; - keystep = -2; - } else { - key = &expanded_key[j][0]; - keystep = 2; - } - ende >>= 1; - for (i = 0; i < 8; i++) { - v0 = key[0]; - v0 ^= (right >> 1) | (right << 31); - left ^= fetch(0, v0, 24) - ^ fetch(2, v0, 16) - ^ fetch(4, v0, 8) - ^ fetch(6, v0, 0); - v1 = key[1]; - v1 ^= (right << 3) | (right >> 29); - left ^= fetch(1, v1, 24) - ^ fetch(3, v1, 16) - ^ fetch(5, v1, 8) - ^ fetch(7, v1, 0); - key += keystep; - - v0 = key[0]; - v0 ^= (left >> 1) | (left << 31); - right ^= fetch(0, v0, 24) - ^ fetch(2, v0, 16) - ^ fetch(4, v0, 8) - ^ fetch(6, v0, 0); - v1 = key[1]; - v1 ^= (left << 3) | (left >> 29); - right ^= fetch(1, v1, 24) - ^ fetch(3, v1, 16) - ^ fetch(5, v1, 8) - ^ fetch(7, v1, 0); - key += keystep; - } - - v0 = left; - left = right; - right = v0; - } - - /* - * final permutation, inverse initial permutation - * left and right are swapped here - */ - v0 = ((right << 1) & 0xaaaaaaaa) | (left & 0x55555555); - v1 = (right & 0xaaaaaaaa) | ((left >> 1) & 0x55555555); - v1 = ((v1 << 6) & 0x33003300) - | (v1 & 0xcc33cc33) - | ((v1 >> 6) & 0x00cc00cc); - v1 = ((v1 << 12) & 0x0f0f0000) - | (v1 & 0xf0f00f0f) - | ((v1 >> 12) & 0x0000f0f0); - v0 = ((v0 << 6) & 0x33003300) - | (v0 & 0xcc33cc33) - | ((v0 >> 6) & 0x00cc00cc); - v0 = ((v0 << 12) & 0x0f0f0000) - | (v0 & 0xf0f00f0f) - | ((v0 >> 12) & 0x0000f0f0); - text[0] = v0; - text[2] = v0 >> 8; - text[4] = v0 >> 16; - text[6] = v0 >> 24; - text[1] = v1; - text[3] = v1 >> 8; - text[5] = v1 >> 16; - text[7] = v1 >> 24; -} - -/* - * key compression permutation, 4 bits at a time - */ -static u32int comptab[] = { - -0x000000,0x010000,0x000008,0x010008,0x000080,0x010080,0x000088,0x010088, -0x000000,0x010000,0x000008,0x010008,0x000080,0x010080,0x000088,0x010088, - -0x000000,0x100000,0x000800,0x100800,0x000000,0x100000,0x000800,0x100800, -0x002000,0x102000,0x002800,0x102800,0x002000,0x102000,0x002800,0x102800, - -0x000000,0x000004,0x000400,0x000404,0x000000,0x000004,0x000400,0x000404, -0x400000,0x400004,0x400400,0x400404,0x400000,0x400004,0x400400,0x400404, - -0x000000,0x000020,0x008000,0x008020,0x800000,0x800020,0x808000,0x808020, -0x000002,0x000022,0x008002,0x008022,0x800002,0x800022,0x808002,0x808022, - -0x000000,0x000200,0x200000,0x200200,0x001000,0x001200,0x201000,0x201200, -0x000000,0x000200,0x200000,0x200200,0x001000,0x001200,0x201000,0x201200, - -0x000000,0x000040,0x000010,0x000050,0x004000,0x004040,0x004010,0x004050, -0x040000,0x040040,0x040010,0x040050,0x044000,0x044040,0x044010,0x044050, - -0x000000,0x000100,0x020000,0x020100,0x000001,0x000101,0x020001,0x020101, -0x080000,0x080100,0x0a0000,0x0a0100,0x080001,0x080101,0x0a0001,0x0a0101, - -0x000000,0x000100,0x040000,0x040100,0x000000,0x000100,0x040000,0x040100, -0x000040,0x000140,0x040040,0x040140,0x000040,0x000140,0x040040,0x040140, - -0x000000,0x400000,0x008000,0x408000,0x000008,0x400008,0x008008,0x408008, -0x000400,0x400400,0x008400,0x408400,0x000408,0x400408,0x008408,0x408408, - -0x000000,0x001000,0x080000,0x081000,0x000020,0x001020,0x080020,0x081020, -0x004000,0x005000,0x084000,0x085000,0x004020,0x005020,0x084020,0x085020, - -0x000000,0x000800,0x000000,0x000800,0x000010,0x000810,0x000010,0x000810, -0x800000,0x800800,0x800000,0x800800,0x800010,0x800810,0x800010,0x800810, - -0x000000,0x010000,0x000200,0x010200,0x000000,0x010000,0x000200,0x010200, -0x100000,0x110000,0x100200,0x110200,0x100000,0x110000,0x100200,0x110200, - -0x000000,0x000004,0x000000,0x000004,0x000080,0x000084,0x000080,0x000084, -0x002000,0x002004,0x002000,0x002004,0x002080,0x002084,0x002080,0x002084, - -0x000000,0x000001,0x200000,0x200001,0x020000,0x020001,0x220000,0x220001, -0x000002,0x000003,0x200002,0x200003,0x020002,0x020003,0x220002,0x220003, -}; - -static int keysh[] = -{ - 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1, -}; - -static void -keycompperm(u32int left, u32int right, ulong *ek) -{ - u32int v0, v1; - int i; - - for(i = 0; i < 16; i++){ - left = (left << keysh[i]) | (left >> (28 - keysh[i])); - left &= 0xfffffff0; - right = (right << keysh[i]) | (right >> (28 - keysh[i])); - right &= 0xfffffff0; - v0 = comptab[6 * (1 << 4) + ((left >> (32-4)) & 0xf)] - | comptab[5 * (1 << 4) + ((left >> (32-8)) & 0xf)] - | comptab[4 * (1 << 4) + ((left >> (32-12)) & 0xf)] - | comptab[3 * (1 << 4) + ((left >> (32-16)) & 0xf)] - | comptab[2 * (1 << 4) + ((left >> (32-20)) & 0xf)] - | comptab[1 * (1 << 4) + ((left >> (32-24)) & 0xf)] - | comptab[0 * (1 << 4) + ((left >> (32-28)) & 0xf)]; - v1 = comptab[13 * (1 << 4) + ((right >> (32-4)) & 0xf)] - | comptab[12 * (1 << 4) + ((right >> (32-8)) & 0xf)] - | comptab[11 * (1 << 4) + ((right >> (32-12)) & 0xf)] - | comptab[10 * (1 << 4) + ((right >> (32-16)) & 0xf)] - | comptab[9 * (1 << 4) + ((right >> (32-20)) & 0xf)] - | comptab[8 * (1 << 4) + ((right >> (32-24)) & 0xf)] - | comptab[7 * (1 << 4) + ((right >> (32-28)) & 0xf)]; - ek[0] = (((v0 >> (24-6)) & 0x3f) << 26) - | (((v0 >> (24-18)) & 0x3f) << 18) - | (((v1 >> (24-6)) & 0x3f) << 10) - | (((v1 >> (24-18)) & 0x3f) << 2); - ek[1] = (((v0 >> (24-12)) & 0x3f) << 26) - | (((v0 >> (24-24)) & 0x3f) << 18) - | (((v1 >> (24-12)) & 0x3f) << 10) - | (((v1 >> (24-24)) & 0x3f) << 2); - ek += 2; - } -} - -void -des_key_setup(uchar key[8], ulong *ek) -{ - u32int left, right, v0, v1; - - v0 = key[0] | ((u32int)key[2] << 8) | ((u32int)key[4] << 16) | ((u32int)key[6] << 24); - v1 = key[1] | ((u32int)key[3] << 8) | ((u32int)key[5] << 16) | ((u32int)key[7] << 24); - left = ((v0 >> 1) & 0x40404040) - | ((v0 >> 2) & 0x10101010) - | ((v0 >> 3) & 0x04040404) - | ((v0 >> 4) & 0x01010101) - | ((v1 >> 0) & 0x80808080) - | ((v1 >> 1) & 0x20202020) - | ((v1 >> 2) & 0x08080808) - | ((v1 >> 3) & 0x02020202); - right = ((v0 >> 1) & 0x04040404) - | ((v0 << 2) & 0x10101010) - | ((v0 << 5) & 0x40404040) - | ((v1 << 0) & 0x08080808) - | ((v1 << 3) & 0x20202020) - | ((v1 << 6) & 0x80808080); - left = ((left << 6) & 0x33003300) - | (left & 0xcc33cc33) - | ((left >> 6) & 0x00cc00cc); - v0 = ((left << 12) & 0x0f0f0000) - | (left & 0xf0f00f0f) - | ((left >> 12) & 0x0000f0f0); - right = ((right << 6) & 0x33003300) - | (right & 0xcc33cc33) - | ((right >> 6) & 0x00cc00cc); - v1 = ((right << 12) & 0x0f0f0000) - | (right & 0xf0f00f0f) - | ((right >> 12) & 0x0000f0f0); - left = v0 & 0xfffffff0; - right = (v1 & 0xffffff00) | ((v0 << 4) & 0xf0); - - keycompperm(left, right, ek); -} - -static uchar parity[128] = -{ - 0x01, 0x02, 0x04, 0x07, 0x08, 0x0b, 0x0d, 0x0e, - 0x10, 0x13, 0x15, 0x16, 0x19, 0x1a, 0x1c, 0x1f, - 0x20, 0x23, 0x25, 0x26, 0x29, 0x2a, 0x2c, 0x2f, - 0x31, 0x32, 0x34, 0x37, 0x38, 0x3b, 0x3d, 0x3e, - 0x40, 0x43, 0x45, 0x46, 0x49, 0x4a, 0x4c, 0x4f, - 0x51, 0x52, 0x54, 0x57, 0x58, 0x5b, 0x5d, 0x5e, - 0x61, 0x62, 0x64, 0x67, 0x68, 0x6b, 0x6d, 0x6e, - 0x70, 0x73, 0x75, 0x76, 0x79, 0x7a, 0x7c, 0x7f, - 0x80, 0x83, 0x85, 0x86, 0x89, 0x8a, 0x8c, 0x8f, - 0x91, 0x92, 0x94, 0x97, 0x98, 0x9b, 0x9d, 0x9e, - 0xa1, 0xa2, 0xa4, 0xa7, 0xa8, 0xab, 0xad, 0xae, - 0xb0, 0xb3, 0xb5, 0xb6, 0xb9, 0xba, 0xbc, 0xbf, - 0xc1, 0xc2, 0xc4, 0xc7, 0xc8, 0xcb, 0xcd, 0xce, - 0xd0, 0xd3, 0xd5, 0xd6, 0xd9, 0xda, 0xdc, 0xdf, - 0xe0, 0xe3, 0xe5, 0xe6, 0xe9, 0xea, 0xec, 0xef, - 0xf1, 0xf2, 0xf4, 0xf7, 0xf8, 0xfb, 0xfd, 0xfe, -}; - -/* - * convert a 7 byte key to an 8 byte one - */ -void -des56to64(uchar *k56, uchar *k64) -{ - u32int hi, lo; - - hi = ((u32int)k56[0]<<24)|((u32int)k56[1]<<16)|((u32int)k56[2]<<8)|k56[3]; - lo = ((u32int)k56[4]<<24)|((u32int)k56[5]<<16)|((u32int)k56[6]<<8); - - k64[0] = parity[(hi>>25)&0x7f]; - k64[1] = parity[(hi>>18)&0x7f]; - k64[2] = parity[(hi>>11)&0x7f]; - k64[3] = parity[(hi>>4)&0x7f]; - k64[4] = parity[((hi<<3)|(lo>>29))&0x7f]; - k64[5] = parity[(lo>>22)&0x7f]; - k64[6] = parity[(lo>>15)&0x7f]; - k64[7] = parity[(lo>>8)&0x7f]; -} - -/* - * convert an 8 byte key to a 7 byte one - */ -void -des64to56(uchar *k64, uchar *k56) -{ - u32int hi, lo; - - hi = (((u32int)k64[0]&0xfe)<<24)|(((u32int)k64[1]&0xfe)<<17)|(((u32int)k64[2]&0xfe)<<10) - |((k64[3]&0xfe)<<3)|(k64[4]>>4); - lo = (((u32int)k64[4]&0xfe)<<28)|(((u32int)k64[5]&0xfe)<<21)|(((u32int)k64[6]&0xfe)<<14) - |(((u32int)k64[7]&0xfe)<<7); - - k56[0] = hi>>24; - k56[1] = hi>>16; - k56[2] = hi>>8; - k56[3] = hi>>0; - k56[4] = lo>>24; - k56[5] = lo>>16; - k56[6] = lo>>8; -} - -void -key_setup(uchar key[7], ulong *ek) -{ - uchar k64[8]; - - des56to64(key, k64); - des_key_setup(k64, ek); -} |