Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 130 insertions, 0 deletions

diff --git a/arch/s390/crypto/des_check_key.c b/arch/s390/crypto/des_check_key.c
new file mode 100644
index 000000000000..e3f5c5f238fe
--- /dev/null
+++ b/arch/s390/crypto/des_check_key.c
@@ -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");