Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
This commit is contained in:
Linus Torvalds
130
arch/s390/crypto/des_check_key.c
Normal file
130
arch/s390/crypto/des_check_key.c
Normal file
@@ -0,0 +1,130 @@
|
||||
/*
|
||||
* Cryptographic API.
|
||||
*
|
||||
* Function for checking keys for the DES and Tripple DES Encryption
|
||||
* algorithms.
|
||||
*
|
||||
* Originally released as descore by Dana L. How <how@isl.stanford.edu>.
|
||||
* Modified by Raimar Falke <rf13@inf.tu-dresden.de> for the Linux-Kernel.
|
||||
* Derived from Cryptoapi and Nettle implementations, adapted for in-place
|
||||
* scatterlist interface. Changed LGPL to GPL per section 3 of the LGPL.
|
||||
*
|
||||
* s390 Version:
|
||||
* Copyright (C) 2003 IBM Deutschland GmbH, IBM Corporation
|
||||
* Author(s): Thomas Spatzier (tspat@de.ibm.com)
|
||||
*
|
||||
* Derived from "crypto/des.c"
|
||||
* Copyright (c) 1992 Dana L. How.
|
||||
* Copyright (c) Raimar Falke <rf13@inf.tu-dresden.de>
|
||||
* Copyright (c) Gisle Sflensminde <gisle@ii.uib.no>
|
||||
* Copyright (C) 2001 Niels Mvller.
|
||||
* Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
*/
|
||||
#include <linux/init.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/errno.h>
|
||||
#include <linux/crypto.h>
|
||||
|
||||
#define ROR(d,c,o) ((d) = (d) >> (c) | (d) << (o))
|
||||
|
||||
static const u8 parity[] = {
|
||||
8,1,0,8,0,8,8,0,0,8,8,0,8,0,2,8,0,8,8,0,8,0,0,8,8,0,0,8,0,8,8,3,
|
||||
0,8,8,0,8,0,0,8,8,0,0,8,0,8,8,0,8,0,0,8,0,8,8,0,0,8,8,0,8,0,0,8,
|
||||
0,8,8,0,8,0,0,8,8,0,0,8,0,8,8,0,8,0,0,8,0,8,8,0,0,8,8,0,8,0,0,8,
|
||||
8,0,0,8,0,8,8,0,0,8,8,0,8,0,0,8,0,8,8,0,8,0,0,8,8,0,0,8,0,8,8,0,
|
||||
0,8,8,0,8,0,0,8,8,0,0,8,0,8,8,0,8,0,0,8,0,8,8,0,0,8,8,0,8,0,0,8,
|
||||
8,0,0,8,0,8,8,0,0,8,8,0,8,0,0,8,0,8,8,0,8,0,0,8,8,0,0,8,0,8,8,0,
|
||||
8,0,0,8,0,8,8,0,0,8,8,0,8,0,0,8,0,8,8,0,8,0,0,8,8,0,0,8,0,8,8,0,
|
||||
4,8,8,0,8,0,0,8,8,0,0,8,0,8,8,0,8,5,0,8,0,8,8,0,0,8,8,0,8,0,6,8,
|
||||
};
|
||||
|
||||
/*
|
||||
* RFC2451: Weak key checks SHOULD be performed.
|
||||
*/
|
||||
int
|
||||
crypto_des_check_key(const u8 *key, unsigned int keylen, u32 *flags)
|
||||
{
|
||||
u32 n, w;
|
||||
|
||||
n = parity[key[0]]; n <<= 4;
|
||||
n |= parity[key[1]]; n <<= 4;
|
||||
n |= parity[key[2]]; n <<= 4;
|
||||
n |= parity[key[3]]; n <<= 4;
|
||||
n |= parity[key[4]]; n <<= 4;
|
||||
n |= parity[key[5]]; n <<= 4;
|
||||
n |= parity[key[6]]; n <<= 4;
|
||||
n |= parity[key[7]];
|
||||
w = 0x88888888L;
|
||||
|
||||
if ((*flags & CRYPTO_TFM_REQ_WEAK_KEY)
|
||||
&& !((n - (w >> 3)) & w)) { /* 1 in 10^10 keys passes this test */
|
||||
if (n < 0x41415151) {
|
||||
if (n < 0x31312121) {
|
||||
if (n < 0x14141515) {
|
||||
/* 01 01 01 01 01 01 01 01 */
|
||||
if (n == 0x11111111) goto weak;
|
||||
/* 01 1F 01 1F 01 0E 01 0E */
|
||||
if (n == 0x13131212) goto weak;
|
||||
} else {
|
||||
/* 01 E0 01 E0 01 F1 01 F1 */
|
||||
if (n == 0x14141515) goto weak;
|
||||
/* 01 FE 01 FE 01 FE 01 FE */
|
||||
if (n == 0x16161616) goto weak;
|
||||
}
|
||||
} else {
|
||||
if (n < 0x34342525) {
|
||||
/* 1F 01 1F 01 0E 01 0E 01 */
|
||||
if (n == 0x31312121) goto weak;
|
||||
/* 1F 1F 1F 1F 0E 0E 0E 0E (?) */
|
||||
if (n == 0x33332222) goto weak;
|
||||
} else {
|
||||
/* 1F E0 1F E0 0E F1 0E F1 */
|
||||
if (n == 0x34342525) goto weak;
|
||||
/* 1F FE 1F FE 0E FE 0E FE */
|
||||
if (n == 0x36362626) goto weak;
|
||||
}
|
||||
}
|
||||
} else {
|
||||
if (n < 0x61616161) {
|
||||
if (n < 0x44445555) {
|
||||
/* E0 01 E0 01 F1 01 F1 01 */
|
||||
if (n == 0x41415151) goto weak;
|
||||
/* E0 1F E0 1F F1 0E F1 0E */
|
||||
if (n == 0x43435252) goto weak;
|
||||
} else {
|
||||
/* E0 E0 E0 E0 F1 F1 F1 F1 (?) */
|
||||
if (n == 0x44445555) goto weak;
|
||||
/* E0 FE E0 FE F1 FE F1 FE */
|
||||
if (n == 0x46465656) goto weak;
|
||||
}
|
||||
} else {
|
||||
if (n < 0x64646565) {
|
||||
/* FE 01 FE 01 FE 01 FE 01 */
|
||||
if (n == 0x61616161) goto weak;
|
||||
/* FE 1F FE 1F FE 0E FE 0E */
|
||||
if (n == 0x63636262) goto weak;
|
||||
} else {
|
||||
/* FE E0 FE E0 FE F1 FE F1 */
|
||||
if (n == 0x64646565) goto weak;
|
||||
/* FE FE FE FE FE FE FE FE */
|
||||
if (n == 0x66666666) goto weak;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
weak:
|
||||
*flags |= CRYPTO_TFM_RES_WEAK_KEY;
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
EXPORT_SYMBOL(crypto_des_check_key);
|
||||
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_DESCRIPTION("Key Check function for DES & DES3 Cipher Algorithms");
|
||||
Reference in New Issue
Block a user