ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/fs/cifs/smbencrypt.c b/marvell/linux/fs/cifs/smbencrypt.c
new file mode 100644
index 0000000..39a9384
--- /dev/null
+++ b/marvell/linux/fs/cifs/smbencrypt.c
@@ -0,0 +1,210 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ Unix SMB/Netbios implementation.
+ Version 1.9.
+ SMB parameters and setup
+ Copyright (C) Andrew Tridgell 1992-2000
+ Copyright (C) Luke Kenneth Casson Leighton 1996-2000
+ Modified by Jeremy Allison 1995.
+ Copyright (C) Andrew Bartlett <abartlet@samba.org> 2002-2003
+ Modified by Steve French (sfrench@us.ibm.com) 2002-2003
+
+*/
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/fips.h>
+#include <linux/fs.h>
+#include <linux/string.h>
+#include <linux/kernel.h>
+#include <linux/random.h>
+#include <crypto/des.h>
+#include "cifs_fs_sb.h"
+#include "cifs_unicode.h"
+#include "cifspdu.h"
+#include "cifsglob.h"
+#include "cifs_debug.h"
+#include "cifsproto.h"
+
+#ifndef false
+#define false 0
+#endif
+#ifndef true
+#define true 1
+#endif
+
+/* following came from the other byteorder.h to avoid include conflicts */
+#define CVAL(buf,pos) (((unsigned char *)(buf))[pos])
+#define SSVALX(buf,pos,val) (CVAL(buf,pos)=(val)&0xFF,CVAL(buf,pos+1)=(val)>>8)
+#define SSVAL(buf,pos,val) SSVALX((buf),(pos),((__u16)(val)))
+
+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 int
+smbhash(unsigned char *out, const unsigned char *in, unsigned char *key)
+{
+ unsigned char key2[8];
+ struct des_ctx ctx;
+
+ str_to_key(key, key2);
+
+ if (fips_enabled) {
+ cifs_dbg(VFS, "FIPS compliance enabled: DES not permitted\n");
+ return -ENOENT;
+ }
+
+ des_expand_key(&ctx, key2, DES_KEY_SIZE);
+ des_encrypt(&ctx, out, in);
+ memzero_explicit(&ctx, sizeof(ctx));
+
+ return 0;
+}
+
+static int
+E_P16(unsigned char *p14, unsigned char *p16)
+{
+ int rc;
+ unsigned char sp8[8] =
+ { 0x4b, 0x47, 0x53, 0x21, 0x40, 0x23, 0x24, 0x25 };
+
+ rc = smbhash(p16, sp8, p14);
+ if (rc)
+ return rc;
+ rc = smbhash(p16 + 8, sp8, p14 + 7);
+ return rc;
+}
+
+static int
+E_P24(unsigned char *p21, const unsigned char *c8, unsigned char *p24)
+{
+ int rc;
+
+ rc = smbhash(p24, c8, p21);
+ if (rc)
+ return rc;
+ rc = smbhash(p24 + 8, c8, p21 + 7);
+ if (rc)
+ return rc;
+ rc = smbhash(p24 + 16, c8, p21 + 14);
+ return rc;
+}
+
+/* produce a md4 message digest from data of length n bytes */
+int
+mdfour(unsigned char *md4_hash, unsigned char *link_str, int link_len)
+{
+ int rc;
+ struct crypto_shash *md4 = NULL;
+ struct sdesc *sdescmd4 = NULL;
+
+ rc = cifs_alloc_hash("md4", &md4, &sdescmd4);
+ if (rc)
+ goto mdfour_err;
+
+ rc = crypto_shash_init(&sdescmd4->shash);
+ if (rc) {
+ cifs_dbg(VFS, "%s: Could not init md4 shash\n", __func__);
+ goto mdfour_err;
+ }
+ rc = crypto_shash_update(&sdescmd4->shash, link_str, link_len);
+ if (rc) {
+ cifs_dbg(VFS, "%s: Could not update with link_str\n", __func__);
+ goto mdfour_err;
+ }
+ rc = crypto_shash_final(&sdescmd4->shash, md4_hash);
+ if (rc)
+ cifs_dbg(VFS, "%s: Could not generate md4 hash\n", __func__);
+
+mdfour_err:
+ cifs_free_hash(&md4, &sdescmd4);
+ return rc;
+}
+
+/*
+ This implements the X/Open SMB password encryption
+ It takes a password, a 8 byte "crypt key" and puts 24 bytes of
+ encrypted password into p24 */
+/* Note that password must be uppercased and null terminated */
+int
+SMBencrypt(unsigned char *passwd, const unsigned char *c8, unsigned char *p24)
+{
+ int rc;
+ unsigned char p14[14], p16[16], p21[21];
+
+ memset(p14, '\0', 14);
+ memset(p16, '\0', 16);
+ memset(p21, '\0', 21);
+
+ memcpy(p14, passwd, 14);
+ rc = E_P16(p14, p16);
+ if (rc)
+ return rc;
+
+ memcpy(p21, p16, 16);
+ rc = E_P24(p21, c8, p24);
+
+ return rc;
+}
+
+/*
+ * Creates the MD4 Hash of the users password in NT UNICODE.
+ */
+
+int
+E_md4hash(const unsigned char *passwd, unsigned char *p16,
+ const struct nls_table *codepage)
+{
+ int rc;
+ int len;
+ __le16 wpwd[129];
+
+ /* Password cannot be longer than 128 characters */
+ if (passwd) /* Password must be converted to NT unicode */
+ len = cifs_strtoUTF16(wpwd, passwd, 128, codepage);
+ else {
+ len = 0;
+ *wpwd = 0; /* Ensure string is null terminated */
+ }
+
+ rc = mdfour(p16, (unsigned char *) wpwd, len * sizeof(__le16));
+ memzero_explicit(wpwd, sizeof(wpwd));
+
+ return rc;
+}
+
+/* Does the NT MD4 hash then des encryption. */
+int
+SMBNTencrypt(unsigned char *passwd, unsigned char *c8, unsigned char *p24,
+ const struct nls_table *codepage)
+{
+ int rc;
+ unsigned char p16[16], p21[21];
+
+ memset(p16, '\0', 16);
+ memset(p21, '\0', 21);
+
+ rc = E_md4hash(passwd, p16, codepage);
+ if (rc) {
+ cifs_dbg(FYI, "%s Can't generate NT hash, error: %d\n",
+ __func__, rc);
+ return rc;
+ }
+ memcpy(p21, p16, 16);
+ rc = E_P24(p21, c8, p24);
+ return rc;
+}