Stripped down import of wpa_supplicant v0.3.8

1 files changed, 71 insertions, 0 deletions

diff --git a/contrib/wpa_supplicant/crypto.c b/contrib/wpa_supplicant/crypto.c
new file mode 100644
index 0000000..cd278e0
--- /dev/null
+++ b/contrib/wpa_supplicant/crypto.c
@@ -0,0 +1,71 @@
+/*
+ * WPA Supplicant / wrapper functions for libcrypto
+ * Copyright (c) 2004-2005, Jouni Malinen <jkmaline@cc.hut.fi>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Alternatively, this software may be distributed under the terms of BSD
+ * license.
+ *
+ * See README and COPYING for more details.
+ */
+
+#include <openssl/md4.h>
+#include <openssl/des.h>
+
+#include "common.h"
+
+
+#if OPENSSL_VERSION_NUMBER < 0x00907000
+#define DES_key_schedule des_key_schedule
+#define DES_cblock des_cblock
+#define DES_set_key(key, schedule) des_set_key((key), *(schedule))
+#define DES_ecb_encrypt(input, output, ks, enc) \
+	des_ecb_encrypt((input), (output), *(ks), (enc))
+#endif /* openssl < 0.9.7 */
+
+
+void md4_vector(size_t num_elem, const u8 *addr[], size_t *len, u8 *mac)
+{
+	MD4_CTX ctx;
+	int i;
+
+	MD4_Init(&ctx);
+	for (i = 0; i < num_elem; i++)
+		MD4_Update(&ctx, addr[i], len[i]);
+	MD4_Final(mac, &ctx);
+}
+
+
+void md4(const u8 *addr, size_t len, u8 *mac)
+{
+	md4_vector(1, &addr, &len, mac);
+}
+
+
+/**
+ * @clear: 8 octets (in)
+ * @key: 7 octets (in) (no parity bits included)
+ * @cypher: 8 octets (out)
+ */
+void des_encrypt(const u8 *clear, const u8 *key, u8 *cypher)
+{
+	u8 pkey[8], next, tmp;
+	int i;
+	DES_key_schedule ks;
+
+	/* Add parity bits to the key */
+	next = 0;
+	for (i = 0; i < 7; i++) {
+		tmp = key[i];
+		pkey[i] = (tmp >> i) | next | 1;
+		next = tmp << (7 - i);
+	}
+	pkey[i] = next | 1;
+
+	DES_set_key(&pkey, &ks);
+	DES_ecb_encrypt((DES_cblock *) clear, (DES_cblock *) cypher, &ks,
+			DES_ENCRYPT);
+}