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-rw-r--r--polux/application/hostapd/crypto.c154
1 files changed, 154 insertions, 0 deletions
diff --git a/polux/application/hostapd/crypto.c b/polux/application/hostapd/crypto.c
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+++ b/polux/application/hostapd/crypto.c
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+/*
+ * 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 <string.h>
+#include <sys/types.h>
+
+#include <openssl/md4.h>
+#include <openssl/md5.h>
+#include <openssl/sha.h>
+#include <openssl/des.h>
+#include <openssl/aes.h>
+
+#include "common.h"
+#include "crypto.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[], const 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 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);
+}
+
+
+#ifdef EAP_TLS_FUNCS
+void md5_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
+{
+ MD5_CTX ctx;
+ int i;
+
+ MD5_Init(&ctx);
+ for (i = 0; i < num_elem; i++)
+ MD5_Update(&ctx, addr[i], len[i]);
+ MD5_Final(mac, &ctx);
+}
+
+
+void sha1_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
+{
+ SHA_CTX ctx;
+ int i;
+
+ SHA1_Init(&ctx);
+ for (i = 0; i < num_elem; i++)
+ SHA1_Update(&ctx, addr[i], len[i]);
+ SHA1_Final(mac, &ctx);
+}
+
+
+void sha1_transform(u8 *state, const u8 data[64])
+{
+ SHA_CTX context;
+ memset(&context, 0, sizeof(context));
+ memcpy(&context.h0, state, 5 * 4);
+ SHA1_Transform(&context, data);
+ memcpy(state, &context.h0, 5 * 4);
+}
+
+
+void * aes_encrypt_init(const u8 *key, size_t len)
+{
+ AES_KEY *ak;
+ ak = malloc(sizeof(*ak));
+ if (ak == NULL)
+ return NULL;
+ if (AES_set_encrypt_key(key, 8 * len, ak) < 0) {
+ free(ak);
+ return NULL;
+ }
+ return ak;
+}
+
+
+void aes_encrypt(void *ctx, const u8 *plain, u8 *crypt)
+{
+ AES_encrypt(plain, crypt, ctx);
+}
+
+
+void aes_encrypt_deinit(void *ctx)
+{
+ free(ctx);
+}
+
+
+void * aes_decrypt_init(const u8 *key, size_t len)
+{
+ AES_KEY *ak;
+ ak = malloc(sizeof(*ak));
+ if (ak == NULL)
+ return NULL;
+ if (AES_set_decrypt_key(key, 8 * len, ak) < 0) {
+ free(ak);
+ return NULL;
+ }
+ return ak;
+}
+
+
+void aes_decrypt(void *ctx, const u8 *crypt, u8 *plain)
+{
+ AES_decrypt(crypt, plain, ctx);
+}
+
+
+void aes_decrypt_deinit(void *ctx)
+{
+ free(ctx);
+}
+#endif /* EAP_TLS_FUNCS */