[CIFS] Use ecb des kernel crypto APIs instead of

 local cifs functions (repost)

Using kernel crypto APIs for DES encryption during LM and NT hash generation
instead of local functions within cifs.
Source file smbdes.c is deleted sans four functions, one of which
uses ecb des functionality provided by kernel crypto APIs.

Remove function SMBOWFencrypt.

Add return codes to various functions such as calc_lanman_hash,
SMBencrypt, and SMBNTencrypt.  Includes fix noticed by Dan Carpenter.

Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
CC: Dan Carpenter <error27@gmail.com>
Acked-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>

1 files changed, 0 insertions, 418 deletions

diff --git a/fs/cifs/smbdes.c b/fs/cifs/smbdes.c
deleted file mode 100644
index 04721485925d..000000000000
--- a/fs/cifs/smbdes.c
+++ /dev/null
@@ -1,418 +0,0 @@
-/*
-   Unix SMB/Netbios implementation.
-   Version 1.9.
-
-   a partial implementation of DES designed for use in the
-   SMB authentication protocol
-
-   Copyright (C) Andrew Tridgell 1998
-   Modified by Steve French (sfrench@us.ibm.com) 2002,2004
-
-   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 2 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, write to the Free Software
-   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-/* 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)
-*/
-#include <linux/slab.h>
-#define uchar unsigned char
-
-static uchar 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 uchar 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 uchar 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 uchar 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 uchar 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 uchar 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 uchar sc[16] = { 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1 };
-
-static uchar 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, char *in, uchar *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;
-	char c[28];
-	char d[28];
-	char *cd;
-	char (*ki)[48];
-	char *pd1;
-	char l[32], r[32];
-	char *rl;
-
-	/* Have to reduce stack usage */
-	pk1 = kmalloc(56+56+64+64, GFP_KERNEL);
-	if (pk1 == NULL)
-		return;
-
-	ki = kmalloc(16*48, GFP_KERNEL);
-	if (ki == NULL) {
-		kfree(pk1);
-		return;
-	}
-
-	cd = pk1 + 56;
-	pd1 = cd  + 56;
-	rl = pd1 + 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;  /* er[48]  */
-		char *erk; /* erk[48] */
-		char b[8][6];
-		char *cb;  /* cb[32]  */
-		char *pcb; /* pcb[32] */
-		char *r2;  /* r2[32]  */
-
-		er = kmalloc(48+48+32+32+32, GFP_KERNEL);
-		if (er == NULL) {
-			kfree(pk1);
-			kfree(ki);
-			return;
-		}
-		erk = er+48;
-		cb  = erk+48;
-		pcb = cb+32;
-		r2  = pcb+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];
-
-		kfree(er);
-	}
-
-	concat(rl, r, l, 32, 32);
-
-	permute(out, rl, perm6, 64);
-	kfree(pk1);
-	kfree(ki);
-}
-
-static void
-str_to_key(unsigned char *str, unsigned char *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);
-}
-
-static void
-smbhash(unsigned char *out, const unsigned char *in, unsigned char *key,
-	int forw)
-{
-	int i;
-	char *outb; /* outb[64] */
-	char *inb;  /* inb[64]  */
-	char *keyb; /* keyb[64] */
-	unsigned char key2[8];
-
-	outb = kmalloc(64 * 3, GFP_KERNEL);
-	if (outb == NULL)
-		return;
-
-	inb  = outb + 64;
-	keyb = inb +  64;
-
-	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)));
-	}
-	kfree(outb);
-}
-
-void
-E_P16(unsigned char *p14, unsigned char *p16)
-{
-	unsigned char sp8[8] =
-	    { 0x4b, 0x47, 0x53, 0x21, 0x40, 0x23, 0x24, 0x25 };
-	smbhash(p16, sp8, p14, 1);
-	smbhash(p16 + 8, sp8, p14 + 7, 1);
-}
-
-void
-E_P24(unsigned char *p21, const unsigned char *c8, unsigned char *p24)
-{
-	smbhash(p24, c8, p21, 1);
-	smbhash(p24 + 8, c8, p21 + 7, 1);
-	smbhash(p24 + 16, c8, p21 + 14, 1);
-}
-
-#if 0 /* currently unused */
-static void
-D_P16(unsigned char *p14, unsigned char *in, unsigned char *out)
-{
-	smbhash(out, in, p14, 0);
-	smbhash(out + 8, in + 8, p14 + 7, 0);
-}
-
-static void
-E_old_pw_hash(unsigned char *p14, unsigned char *in, unsigned char *out)
-{
-	smbhash(out, in, p14, 1);
-	smbhash(out + 8, in + 8, p14 + 7, 1);
-}
-/* these routines are currently unneeded, but may be
-	needed later */
-void
-cred_hash1(unsigned char *out, unsigned char *in, unsigned char *key)
-{
-	unsigned char buf[8];
-
-	smbhash(buf, in, key, 1);
-	smbhash(out, buf, key + 9, 1);
-}
-
-void
-cred_hash2(unsigned char *out, unsigned char *in, unsigned char *key)
-{
-	unsigned char buf[8];
-	static unsigned char key2[8];
-
-	smbhash(buf, in, key, 1);
-	key2[0] = key[7];
-	smbhash(out, buf, key2, 1);
-}
-
-void
-cred_hash3(unsigned char *out, unsigned char *in, unsigned char *key, int forw)
-{
-	static unsigned char key2[8];
-
-	smbhash(out, in, key, forw);
-	key2[0] = key[7];
-	smbhash(out + 8, in + 8, key2, forw);
-}
-#endif /* unneeded routines */