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Diffstat (limited to 'source4/libcli/auth/smbdes.c')
| -rw-r--r-- | source4/libcli/auth/smbdes.c | 381 |
1 files changed, 0 insertions, 381 deletions
diff --git a/source4/libcli/auth/smbdes.c b/source4/libcli/auth/smbdes.c deleted file mode 100644 index 32e65e779d..0000000000 --- a/source4/libcli/auth/smbdes.c +++ /dev/null @@ -1,381 +0,0 @@ -/* - Unix SMB/CIFS implementation. - - a partial implementation of DES designed for use in the - SMB authentication protocol - - Copyright (C) Andrew Tridgell 1998 - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 3 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see <http://www.gnu.org/licenses/>. -*/ - -#include "includes.h" -#include "libcli/auth/libcli_auth.h" - -/* NOTES: - - This code makes no attempt to be fast! In fact, it is a very - slow implementation - - This code is NOT a complete DES implementation. It implements only - the minimum necessary for SMB authentication, as used by all SMB - products (including every copy of Microsoft Windows95 ever sold) - - In particular, it can only do a unchained forward DES pass. This - means it is not possible to use this code for encryption/decryption - of data, instead it is only useful as a "hash" algorithm. - - There is no entry point into this code that allows normal DES operation. - - I believe this means that this code does not come under ITAR - regulations but this is NOT a legal opinion. If you are concerned - about the applicability of ITAR regulations to this code then you - should confirm it for yourself (and maybe let me know if you come - up with a different answer to the one above) -*/ - - -static const uint8_t perm1[56] = {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}; - -static const uint8_t perm2[48] = {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}; - -static const uint8_t perm3[64] = {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}; - -static const uint8_t perm4[48] = { 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}; - -static const uint8_t perm5[32] = { 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}; - - -static const uint8_t perm6[64] ={ 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}; - - -static const uint8_t sc[16] = {1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1}; - -static const uint8_t sbox[8][4][16] = { - {{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}}, - - {{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}}, - - {{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}}, - - {{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}}, - - {{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}}, - - {{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}}, - - {{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}}, - - {{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}}}; - -static void permute(char *out, const char *in, const uint8_t *p, int n) -{ - int i; - for (i=0;i<n;i++) - out[i] = in[p[i]-1]; -} - -static void lshift(char *d, int count, int n) -{ - char out[64]; - int i; - for (i=0;i<n;i++) - out[i] = d[(i+count)%n]; - for (i=0;i<n;i++) - d[i] = out[i]; -} - -static void concat(char *out, char *in1, char *in2, int l1, int l2) -{ - while (l1--) - *out++ = *in1++; - while (l2--) - *out++ = *in2++; -} - -static void xor(char *out, char *in1, char *in2, int n) -{ - int i; - for (i=0;i<n;i++) - out[i] = in1[i] ^ in2[i]; -} - -static void dohash(char *out, char *in, char *key, int forw) -{ - int i, j, k; - char pk1[56]; - char c[28]; - char d[28]; - char cd[56]; - char ki[16][48]; - char pd1[64]; - char l[32], r[32]; - char rl[64]; - - permute(pk1, key, perm1, 56); - - for (i=0;i<28;i++) - c[i] = pk1[i]; - for (i=0;i<28;i++) - d[i] = pk1[i+28]; - - for (i=0;i<16;i++) { - lshift(c, sc[i], 28); - lshift(d, sc[i], 28); - - concat(cd, c, d, 28, 28); - permute(ki[i], cd, perm2, 48); - } - - permute(pd1, in, perm3, 64); - - for (j=0;j<32;j++) { - l[j] = pd1[j]; - r[j] = pd1[j+32]; - } - - for (i=0;i<16;i++) { - char er[48]; - char erk[48]; - char b[8][6]; - char cb[32]; - char pcb[32]; - char r2[32]; - - permute(er, r, perm4, 48); - - xor(erk, er, ki[forw ? i : 15 - i], 48); - - for (j=0;j<8;j++) - for (k=0;k<6;k++) - b[j][k] = erk[j*6 + k]; - - for (j=0;j<8;j++) { - int m, n; - m = (b[j][0]<<1) | b[j][5]; - - n = (b[j][1]<<3) | (b[j][2]<<2) | (b[j][3]<<1) | b[j][4]; - - for (k=0;k<4;k++) - b[j][k] = (sbox[j][m][n] & (1<<(3-k)))?1:0; - } - - for (j=0;j<8;j++) - for (k=0;k<4;k++) - cb[j*4+k] = b[j][k]; - permute(pcb, cb, perm5, 32); - - xor(r2, l, pcb, 32); - - for (j=0;j<32;j++) - l[j] = r[j]; - - for (j=0;j<32;j++) - r[j] = r2[j]; - } - - concat(rl, r, l, 32, 32); - - permute(out, rl, perm6, 64); -} - -static void str_to_key(const uint8_t *str,uint8_t *key) -{ - int i; - - key[0] = str[0]>>1; - key[1] = ((str[0]&0x01)<<6) | (str[1]>>2); - key[2] = ((str[1]&0x03)<<5) | (str[2]>>3); - key[3] = ((str[2]&0x07)<<4) | (str[3]>>4); - key[4] = ((str[3]&0x0F)<<3) | (str[4]>>5); - key[5] = ((str[4]&0x1F)<<2) | (str[5]>>6); - key[6] = ((str[5]&0x3F)<<1) | (str[6]>>7); - key[7] = str[6]&0x7F; - for (i=0;i<8;i++) { - key[i] = (key[i]<<1); - } -} - -/* - basic des crypt using a 56 bit (7 byte) key -*/ -void des_crypt56(uint8_t out[8], const uint8_t in[8], const uint8_t key[7], int forw) -{ - int i; - char outb[64]; - char inb[64]; - char keyb[64]; - uint8_t key2[8]; - - str_to_key(key, key2); - - for (i=0;i<64;i++) { - inb[i] = (in[i/8] & (1<<(7-(i%8)))) ? 1 : 0; - keyb[i] = (key2[i/8] & (1<<(7-(i%8)))) ? 1 : 0; - outb[i] = 0; - } - - dohash(outb, inb, keyb, forw); - - for (i=0;i<8;i++) { - out[i] = 0; - } - - for (i=0;i<64;i++) { - if (outb[i]) - out[i/8] |= (1<<(7-(i%8))); - } -} - -void E_P16(const uint8_t *p14,uint8_t *p16) -{ - const uint8_t sp8[8] = {0x4b, 0x47, 0x53, 0x21, 0x40, 0x23, 0x24, 0x25}; - des_crypt56(p16, sp8, p14, 1); - des_crypt56(p16+8, sp8, p14+7, 1); -} - -void E_P24(const uint8_t *p21, const uint8_t *c8, uint8_t *p24) -{ - des_crypt56(p24, c8, p21, 1); - des_crypt56(p24+8, c8, p21+7, 1); - des_crypt56(p24+16, c8, p21+14, 1); -} - -void D_P16(const uint8_t *p14, const uint8_t *in, uint8_t *out) -{ - des_crypt56(out, in, p14, 0); - des_crypt56(out+8, in+8, p14+7, 0); -} - -void E_old_pw_hash( uint8_t *p14, const uint8_t *in, uint8_t *out) -{ - des_crypt56(out, in, p14, 1); - des_crypt56(out+8, in+8, p14+7, 1); -} - -/* des encryption with a 128 bit key */ -void des_crypt128(uint8_t out[8], const uint8_t in[8], const uint8_t key[16]) -{ - uint8_t buf[8]; - des_crypt56(buf, in, key, 1); - des_crypt56(out, buf, key+9, 1); -} - -/* des encryption with a 64 bit key */ -void des_crypt64(uint8_t out[8], const uint8_t in[8], const uint8_t key[8], int forw) -{ - uint8_t buf[8]; - uint8_t key2[8]; - ZERO_STRUCT(key2); - des_crypt56(buf, in, key, forw); - key2[0] = key[7]; - des_crypt56(out, buf, key2, forw); -} - -/* des encryption with a 112 bit (14 byte) key */ -void des_crypt112(uint8_t out[8], const uint8_t in[8], const uint8_t key[14], int forw) -{ - uint8_t buf[8]; - des_crypt56(buf, in, key, forw); - des_crypt56(out, buf, key+7, forw); -} - -/* des encryption of a 16 byte lump of data with a 112 bit key */ -void des_crypt112_16(uint8_t out[16], uint8_t in[16], const uint8_t key[14], int forw) -{ - des_crypt56(out, in, key, forw); - des_crypt56(out + 8, in + 8, key+7, forw); -} - -/* Decode a sam password hash into a password. The password hash is the - same method used to store passwords in the NT registry. The DES key - used is based on the RID of the user. */ -void sam_rid_crypt(uint_t rid, const uint8_t *in, uint8_t *out, int forw) -{ - uint8_t s[14]; - - s[0] = s[4] = s[8] = s[12] = (uint8_t)(rid & 0xFF); - s[1] = s[5] = s[9] = s[13] = (uint8_t)((rid >> 8) & 0xFF); - s[2] = s[6] = s[10] = (uint8_t)((rid >> 16) & 0xFF); - s[3] = s[7] = s[11] = (uint8_t)((rid >> 24) & 0xFF); - - des_crypt56(out, in, s, forw); - des_crypt56(out+8, in+8, s+7, forw); -} |