Import moonshot-gss-eap_1.0.1.orig.tar.gz

[mech_eap.git] / libeap / src / crypto / aes-unwrap.c

diff --git a/libeap/src/crypto/aes-unwrap.c b/libeap/src/crypto/aes-unwrap.c
deleted file mode 100644 (file)
index f233ffa..0000000
--- a/libeap/src/crypto/aes-unwrap.c
+++ /dev/null
@@ -1,79 +0,0 @@
-/*
- * AES key unwrap (128-bit KEK, RFC3394)
- *
- * Copyright (c) 2003-2007, Jouni Malinen <j@w1.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 "includes.h"
-
-#include "common.h"
-#include "aes.h"
-#include "aes_wrap.h"
-
-/**
- * aes_unwrap - Unwrap key with AES Key Wrap Algorithm (128-bit KEK) (RFC3394)
- * @kek: Key encryption key (KEK)
- * @n: Length of the plaintext key in 64-bit units; e.g., 2 = 128-bit = 16
- * bytes
- * @cipher: Wrapped key to be unwrapped, (n + 1) * 64 bits
- * @plain: Plaintext key, n * 64 bits
- * Returns: 0 on success, -1 on failure (e.g., integrity verification failed)
- */
-int aes_unwrap(const u8 *kek, int n, const u8 *cipher, u8 *plain)
-{
-       u8 a[8], *r, b[16];
-       int i, j;
-       void *ctx;
-
-       /* 1) Initialize variables. */
-       os_memcpy(a, cipher, 8);
-       r = plain;
-       os_memcpy(r, cipher + 8, 8 * n);
-
-       ctx = aes_decrypt_init(kek, 16);
-       if (ctx == NULL)
-               return -1;
-
-       /* 2) Compute intermediate values.
-        * For j = 5 to 0
-        *     For i = n to 1
-        *         B = AES-1(K, (A ^ t) | R[i]) where t = n*j+i
-        *         A = MSB(64, B)
-        *         R[i] = LSB(64, B)
-        */
-       for (j = 5; j >= 0; j--) {
-               r = plain + (n - 1) * 8;
-               for (i = n; i >= 1; i--) {
-                       os_memcpy(b, a, 8);
-                       b[7] ^= n * j + i;
-
-                       os_memcpy(b + 8, r, 8);
-                       aes_decrypt(ctx, b, b);
-                       os_memcpy(a, b, 8);
-                       os_memcpy(r, b + 8, 8);
-                       r -= 8;
-               }
-       }
-       aes_decrypt_deinit(ctx);
-
-       /* 3) Output results.
-        *
-        * These are already in @plain due to the location of temporary
-        * variables. Just verify that the IV matches with the expected value.
-        */
-       for (i = 0; i < 8; i++) {
-               if (a[i] != 0xa6)
-                       return -1;
-       }
-
-       return 0;
-}