diff options
Diffstat (limited to 'sys/netncp/ncp_crypt.c')
| -rw-r--r-- | sys/netncp/ncp_crypt.c | 271 |
1 files changed, 0 insertions, 271 deletions
diff --git a/sys/netncp/ncp_crypt.c b/sys/netncp/ncp_crypt.c deleted file mode 100644 index 9899ef6..0000000 --- a/sys/netncp/ncp_crypt.c +++ /dev/null @@ -1,271 +0,0 @@ -/* - * Routines in this file based on work of Volker Lendecke - */ -/*$********************************************************* - $* - $* This code has been taken from DDJ 11/93, from an - $* article by Pawel Szczerbina. - $* - $* Password encryption routines follow. - $* Converted to C from Barry Nance's Pascal - $* prog published in the March -93 issue of Byte. - $* - $* Adapted to be useable for ncpfs by - $* Volker Lendecke <lendecke@namu01.gwdg.de> in - $* October 1995. - $* - $********************************************************* */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include <sys/param.h> -#include <sys/systm.h> -#include <netncp/ncp.h> -#include <netncp/ncp_subr.h> - -typedef unsigned char buf32[32]; - -static unsigned char encrypttable[256] = { -0x7, 0x8, 0x0, 0x8, 0x6, 0x4, 0xE, 0x4, 0x5, 0xC, 0x1, 0x7, 0xB, 0xF, 0xA, 0x8, -0xF, 0x8, 0xC, 0xC, 0x9, 0x4, 0x1, 0xE, 0x4, 0x6, 0x2, 0x4, 0x0, 0xA, 0xB, 0x9, -0x2, 0xF, 0xB, 0x1, 0xD, 0x2, 0x1, 0x9, 0x5, 0xE, 0x7, 0x0, 0x0, 0x2, 0x6, 0x6, -0x0, 0x7, 0x3, 0x8, 0x2, 0x9, 0x3, 0xF, 0x7, 0xF, 0xC, 0xF, 0x6, 0x4, 0xA, 0x0, -0x2, 0x3, 0xA, 0xB, 0xD, 0x8, 0x3, 0xA, 0x1, 0x7, 0xC, 0xF, 0x1, 0x8, 0x9, 0xD, -0x9, 0x1, 0x9, 0x4, 0xE, 0x4, 0xC, 0x5, 0x5, 0xC, 0x8, 0xB, 0x2, 0x3, 0x9, 0xE, -0x7, 0x7, 0x6, 0x9, 0xE, 0xF, 0xC, 0x8, 0xD, 0x1, 0xA, 0x6, 0xE, 0xD, 0x0, 0x7, -0x7, 0xA, 0x0, 0x1, 0xF, 0x5, 0x4, 0xB, 0x7, 0xB, 0xE, 0xC, 0x9, 0x5, 0xD, 0x1, -0xB, 0xD, 0x1, 0x3, 0x5, 0xD, 0xE, 0x6, 0x3, 0x0, 0xB, 0xB, 0xF, 0x3, 0x6, 0x4, -0x9, 0xD, 0xA, 0x3, 0x1, 0x4, 0x9, 0x4, 0x8, 0x3, 0xB, 0xE, 0x5, 0x0, 0x5, 0x2, -0xC, 0xB, 0xD, 0x5, 0xD, 0x5, 0xD, 0x2, 0xD, 0x9, 0xA, 0xC, 0xA, 0x0, 0xB, 0x3, -0x5, 0x3, 0x6, 0x9, 0x5, 0x1, 0xE, 0xE, 0x0, 0xE, 0x8, 0x2, 0xD, 0x2, 0x2, 0x0, -0x4, 0xF, 0x8, 0x5, 0x9, 0x6, 0x8, 0x6, 0xB, 0xA, 0xB, 0xF, 0x0, 0x7, 0x2, 0x8, -0xC, 0x7, 0x3, 0xA, 0x1, 0x4, 0x2, 0x5, 0xF, 0x7, 0xA, 0xC, 0xE, 0x5, 0x9, 0x3, -0xE, 0x7, 0x1, 0x2, 0xE, 0x1, 0xF, 0x4, 0xA, 0x6, 0xC, 0x6, 0xF, 0x4, 0x3, 0x0, -0xC, 0x0, 0x3, 0x6, 0xF, 0x8, 0x7, 0xB, 0x2, 0xD, 0xC, 0x6, 0xA, 0xA, 0x8, 0xD -}; - -static buf32 encryptkeys = { - 0x48, 0x93, 0x46, 0x67, 0x98, 0x3D, 0xE6, 0x8D, - 0xB7, 0x10, 0x7A, 0x26, 0x5A, 0xB9, 0xB1, 0x35, - 0x6B, 0x0F, 0xD5, 0x70, 0xAE, 0xFB, 0xAD, 0x11, - 0xF4, 0x47, 0xDC, 0xA7, 0xEC, 0xCF, 0x50, 0xC0 -}; - -/* - * Create table-based 16-bytes hash from a 32-bytes array - */ -static void -nw_hash(buf32 temp, unsigned char *target) { - short sum; - unsigned char b3; - int s, b2, i; - - sum = 0; - - for (b2 = 0; b2 <= 1; ++b2) { - for (s = 0; s <= 31; ++s) { - b3 = (temp[s] + sum) ^ (temp[(s + sum) & 31] - encryptkeys[s]); - sum += b3; - temp[s] = b3; - } - } - - for (i = 0; i <= 15; ++i) { - target[i] = encrypttable[temp[2 * i]] - | (encrypttable[temp[2 * i + 1]] << 4); - } -} - - -/* - * Create a 16-bytes pattern from given buffer based on a four bytes key - */ -void -nw_keyhash(const u_char *key, const u_char *buf, int buflen, u_char *target) { - int b2, d, s; - buf32 temp; - - while (buflen > 0 && buf[buflen - 1] == 0) - buflen--; - - bzero(temp, sizeof(temp)); - - d = 0; - while (buflen >= 32) { - for (s = 0; s <= 31; ++s) - temp[s] ^= buf[d++]; - buflen -= 32; - } - b2 = d; - if (buflen > 0) { - for (s = 0; s <= 31; ++s) { - if (d + buflen == b2) { - temp[s] ^= encryptkeys[s]; - b2 = d; - } else - temp[s] ^= buf[b2++]; - } - } - for (s = 0; s <= 31; ++s) - temp[s] ^= key[s & 3]; - - nw_hash(temp, target); -} - -/* - * Create an 8-bytes pattern from an 8-bytes key and 16-bytes of data - */ -void -nw_encrypt(const u_char *fra, const u_char *buf, u_char *target) { - buf32 k; - int s; - - nw_keyhash(fra, buf, 16, k); - nw_keyhash(fra + 4, buf, 16, k + 16); - - for (s = 0; s < 16; s++) - k[s] ^= k[31 - s]; - - for (s = 0; s < 8; s++) - *target++ = k[s] ^ k[15 - s]; -} - -#ifdef _KERNEL -/* - * MD4 routine taken from libmd sources - */ -typedef u_int32_t UINT4; -typedef unsigned char *POINTER; - -#define PROTO_LIST(list) list - -static void Decode PROTO_LIST - ((UINT4 *, const unsigned char *, unsigned int)); - -/* Constants for MD4Transform routine. - */ -#define S11 3 -#define S12 7 -#define S13 11 -#define S14 19 -#define S21 3 -#define S22 5 -#define S23 9 -#define S24 13 -#define S31 3 -#define S32 9 -#define S33 11 -#define S34 15 - -/* F, G and H are basic MD4 functions. - */ -#define F(x, y, z) (((x) & (y)) | ((~x) & (z))) -#define G(x, y, z) (((x) & (y)) | ((x) & (z)) | ((y) & (z))) -#define H(x, y, z) ((x) ^ (y) ^ (z)) - -/* ROTATE_LEFT rotates x left n bits. - */ -#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n)))) - -/* FF, GG and HH are transformations for rounds 1, 2 and 3 */ -/* Rotation is separate from addition to prevent recomputation */ -#define FF(a, b, c, d, x, s) { \ - (a) += F ((b), (c), (d)) + (x); \ - (a) = ROTATE_LEFT ((a), (s)); \ - } -#define GG(a, b, c, d, x, s) { \ - (a) += G ((b), (c), (d)) + (x) + (UINT4)0x5a827999; \ - (a) = ROTATE_LEFT ((a), (s)); \ - } -#define HH(a, b, c, d, x, s) { \ - (a) += H ((b), (c), (d)) + (x) + (UINT4)0x6ed9eba1; \ - (a) = ROTATE_LEFT ((a), (s)); \ - } - -void -ncp_sign(const u_int32_t *state, const char *block, u_int32_t *ostate) { - UINT4 a, b, c, d, x[16]; - - Decode (x, block, 64); - a = state[0]; - b = state[1]; - c = state[2]; - d = state[3]; - /* Round 1 */ - FF (a, b, c, d, x[ 0], S11); /* 1 */ - FF (d, a, b, c, x[ 1], S12); /* 2 */ - FF (c, d, a, b, x[ 2], S13); /* 3 */ - FF (b, c, d, a, x[ 3], S14); /* 4 */ - FF (a, b, c, d, x[ 4], S11); /* 5 */ - FF (d, a, b, c, x[ 5], S12); /* 6 */ - FF (c, d, a, b, x[ 6], S13); /* 7 */ - FF (b, c, d, a, x[ 7], S14); /* 8 */ - FF (a, b, c, d, x[ 8], S11); /* 9 */ - FF (d, a, b, c, x[ 9], S12); /* 10 */ - FF (c, d, a, b, x[10], S13); /* 11 */ - FF (b, c, d, a, x[11], S14); /* 12 */ - FF (a, b, c, d, x[12], S11); /* 13 */ - FF (d, a, b, c, x[13], S12); /* 14 */ - FF (c, d, a, b, x[14], S13); /* 15 */ - FF (b, c, d, a, x[15], S14); /* 16 */ - - /* Round 2 */ - GG (a, b, c, d, x[ 0], S21); /* 17 */ - GG (d, a, b, c, x[ 4], S22); /* 18 */ - GG (c, d, a, b, x[ 8], S23); /* 19 */ - GG (b, c, d, a, x[12], S24); /* 20 */ - GG (a, b, c, d, x[ 1], S21); /* 21 */ - GG (d, a, b, c, x[ 5], S22); /* 22 */ - GG (c, d, a, b, x[ 9], S23); /* 23 */ - GG (b, c, d, a, x[13], S24); /* 24 */ - GG (a, b, c, d, x[ 2], S21); /* 25 */ - GG (d, a, b, c, x[ 6], S22); /* 26 */ - GG (c, d, a, b, x[10], S23); /* 27 */ - GG (b, c, d, a, x[14], S24); /* 28 */ - GG (a, b, c, d, x[ 3], S21); /* 29 */ - GG (d, a, b, c, x[ 7], S22); /* 30 */ - GG (c, d, a, b, x[11], S23); /* 31 */ - GG (b, c, d, a, x[15], S24); /* 32 */ - - /* Round 3 */ - HH (a, b, c, d, x[ 0], S31); /* 33 */ - HH (d, a, b, c, x[ 8], S32); /* 34 */ - HH (c, d, a, b, x[ 4], S33); /* 35 */ - HH (b, c, d, a, x[12], S34); /* 36 */ - HH (a, b, c, d, x[ 2], S31); /* 37 */ - HH (d, a, b, c, x[10], S32); /* 38 */ - HH (c, d, a, b, x[ 6], S33); /* 39 */ - HH (b, c, d, a, x[14], S34); /* 40 */ - HH (a, b, c, d, x[ 1], S31); /* 41 */ - HH (d, a, b, c, x[ 9], S32); /* 42 */ - HH (c, d, a, b, x[ 5], S33); /* 43 */ - HH (b, c, d, a, x[13], S34); /* 44 */ - HH (a, b, c, d, x[ 3], S31); /* 45 */ - HH (d, a, b, c, x[11], S32); /* 46 */ - HH (c, d, a, b, x[ 7], S33); /* 47 */ - HH (b, c, d, a, x[15], S34); /* 48 */ - - ostate[0] = state[0] + a; - ostate[1] = state[1] + b; - ostate[2] = state[2] + c; - ostate[3] = state[3] + d; -} - -/* Decodes input (unsigned char) into output (UINT4). Assumes len is - a multiple of 4. - */ -static void Decode (output, input, len) - -UINT4 *output; -const unsigned char *input; -unsigned int len; -{ - unsigned int i, j; - - for (i = 0, j = 0; j < len; i++, j += 4) - output[i] = ((UINT4)input[j]) | (((UINT4)input[j+1]) << 8) | - (((UINT4)input[j+2]) << 16) | (((UINT4)input[j+3]) << 24); -} - -#endif /* _KERNEL */ |
