projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 74ba9207 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
| 790fe579 | 2 | /* |
| 1da177e4 LT |
3 | Unix SMB/Netbios implementation. |
| 4 | Version 1.9. | |
| 5 | SMB parameters and setup | |
| 6 | Copyright (C) Andrew Tridgell 1992-2000 | |
| 7 | Copyright (C) Luke Kenneth Casson Leighton 1996-2000 | |
| 8 | Modified by Jeremy Allison 1995. | |
| 9 | Copyright (C) Andrew Bartlett <abartlet@samba.org> 2002-2003 | |
| 10 | Modified by Steve French (sfrench@us.ibm.com) 2002-2003 | |
| 50c2f753 | 11 | |
| 1da177e4 LT |
12 | */ |
| 13 | ||
| 14 | #include <linux/module.h> | |
| 5a0e3ad6 | 15 | #include <linux/slab.h> |
| 9a394d12 | 16 | #include <linux/fips.h> |
| 1da177e4 LT |
17 | #include <linux/fs.h> |
| 18 | #include <linux/string.h> | |
| 19 | #include <linux/kernel.h> | |
| 20 | #include <linux/random.h> | |
| 2baa2682 | 21 | #include "cifs_fs_sb.h" |
| 1da177e4 LT |
22 | #include "cifs_unicode.h" |
| 23 | #include "cifspdu.h" | |
| 3979877e | 24 | #include "cifsglob.h" |
| 1da177e4 | 25 | #include "cifs_debug.h" |
| ee2c9258 | 26 | #include "cifsproto.h" |
| 23e91d8b | 27 | #include "../smbfs_common/md4.h" |
| 1da177e4 | 28 | |
| 4b18f2a9 SF |
29 | #ifndef false |
| 30 | #define false 0 | |
| 1da177e4 | 31 | #endif |
| 4b18f2a9 SF |
32 | #ifndef true |
| 33 | #define true 1 | |
| 1da177e4 LT |
34 | #endif |
| 35 | ||
| 36 | /* following came from the other byteorder.h to avoid include conflicts */ | |
| 37 | #define CVAL(buf,pos) (((unsigned char *)(buf))[pos]) | |
| 38 | #define SSVALX(buf,pos,val) (CVAL(buf,pos)=(val)&0xFF,CVAL(buf,pos+1)=(val)>>8) | |
| 39 | #define SSVAL(buf,pos,val) SSVALX((buf),(pos),((__u16)(val))) | |
| 40 | ||
| ee2c9258 | 41 | /* produce a md4 message digest from data of length n bytes */ |
| 76a3c92e | 42 | static int |
| ee2c9258 SP |
43 | mdfour(unsigned char *md4_hash, unsigned char *link_str, int link_len) |
| 44 | { | |
| 45 | int rc; | |
| 42c21973 | 46 | struct md4_ctx mctx; |
| 82fb82be | 47 | |
| 42c21973 | 48 | rc = cifs_md4_init(&mctx); |
| ee2c9258 | 49 | if (rc) { |
| 42c21973 | 50 | cifs_dbg(VFS, "%s: Could not init MD4\n", __func__); |
| ee2c9258 SP |
51 | goto mdfour_err; |
| 52 | } | |
| 42c21973 | 53 | rc = cifs_md4_update(&mctx, link_str, link_len); |
| 14cae324 | 54 | if (rc) { |
| 42c21973 | 55 | cifs_dbg(VFS, "%s: Could not update MD4\n", __func__); |
| 14cae324 SP |
56 | goto mdfour_err; |
| 57 | } | |
| 42c21973 | 58 | rc = cifs_md4_final(&mctx, md4_hash); |
| 14cae324 | 59 | if (rc) |
| 42c21973 RS |
60 | cifs_dbg(VFS, "%s: Could not finalize MD4\n", __func__); |
| 61 | ||
| 1da177e4 | 62 | |
| ee2c9258 | 63 | mdfour_err: |
| ee2c9258 SP |
64 | return rc; |
| 65 | } | |
| 66 | ||
| 790fe579 | 67 | /* |
| 1da177e4 LT |
68 | * Creates the MD4 Hash of the users password in NT UNICODE. |
| 69 | */ | |
| 70 | ||
| ee2c9258 | 71 | int |
| 9ef5992e SP |
72 | E_md4hash(const unsigned char *passwd, unsigned char *p16, |
| 73 | const struct nls_table *codepage) | |
| 1da177e4 | 74 | { |
| ee2c9258 | 75 | int rc; |
| 1da177e4 | 76 | int len; |
| 9c32c63b | 77 | __le16 wpwd[129]; |
| 1da177e4 LT |
78 | |
| 79 | /* Password cannot be longer than 128 characters */ | |
| 9ef5992e | 80 | if (passwd) /* Password must be converted to NT unicode */ |
| acbbb76a | 81 | len = cifs_strtoUTF16(wpwd, passwd, 128, codepage); |
| 9ef5992e | 82 | else { |
| 1da177e4 | 83 | len = 0; |
| 9ef5992e SP |
84 | *wpwd = 0; /* Ensure string is null terminated */ |
| 85 | } | |
| 1da177e4 | 86 | |
| 9c32c63b | 87 | rc = mdfour(p16, (unsigned char *) wpwd, len * sizeof(__le16)); |
| f99dbfa4 | 88 | memzero_explicit(wpwd, sizeof(wpwd)); |
| ee2c9258 SP |
89 | |
| 90 | return rc; | |
| 1da177e4 | 91 | } |