Changes to work with OpenSSH and wpa_supplicant.

Change-Id: I19ed78acc67bd0ad8b905ce0ac628b39da8bb161

1 files changed, 125 insertions, 0 deletions

diff --git a/android_compat_keywrap.c b/android_compat_keywrap.c
new file mode 100644
index 0000000..9ffe17d
--- /dev/null
+++ b/android_compat_keywrap.c
@@ -0,0 +1,125 @@
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project.
+ */
+/* ====================================================================
+ * Copyright (c) 2008 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ */
+
+#include <openssl/aes.h>
+#include <openssl/mem.h>
+
+#include <string.h>
+#include <stdlib.h>
+
+static const uint8_t default_iv[] = {
+    0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6,
+};
+
+int AES_wrap_key(AES_KEY *key, const uint8_t *iv, uint8_t *out,
+                 const uint8_t *in, unsigned int inlen) {
+  uint8_t *A, B[16], *R;
+  unsigned int i, j, t;
+  if ((inlen & 0x7) || (inlen < 8)) return -1;
+  A = B;
+  t = 1;
+  memcpy(out + 8, in, inlen);
+  if (!iv) iv = default_iv;
+
+  memcpy(A, iv, 8);
+
+  for (j = 0; j < 6; j++) {
+    R = out + 8;
+    for (i = 0; i < inlen; i += 8, t++, R += 8) {
+      memcpy(B + 8, R, 8);
+      AES_encrypt(B, B, key);
+      A[7] ^= (uint8_t)(t & 0xff);
+      if (t > 0xff) {
+        A[6] ^= (uint8_t)((t >> 8) & 0xff);
+        A[5] ^= (uint8_t)((t >> 16) & 0xff);
+        A[4] ^= (uint8_t)((t >> 24) & 0xff);
+      }
+      memcpy(R, B + 8, 8);
+    }
+  }
+  memcpy(out, A, 8);
+  return inlen + 8;
+}
+
+int AES_unwrap_key(AES_KEY *key, const uint8_t *iv, uint8_t *out,
+                   const uint8_t *in, unsigned int inlen) {
+  uint8_t *A, B[16], *R;
+  unsigned int i, j, t;
+  inlen -= 8;
+  if (inlen & 0x7) return -1;
+  if (inlen < 8) return -1;
+  A = B;
+  t = 6 * (inlen >> 3);
+  memcpy(A, in, 8);
+  memcpy(out, in + 8, inlen);
+  for (j = 0; j < 6; j++) {
+    R = out + inlen - 8;
+    for (i = 0; i < inlen; i += 8, t--, R -= 8) {
+      A[7] ^= (uint8_t)(t & 0xff);
+      if (t > 0xff) {
+        A[6] ^= (uint8_t)((t >> 8) & 0xff);
+        A[5] ^= (uint8_t)((t >> 16) & 0xff);
+        A[4] ^= (uint8_t)((t >> 24) & 0xff);
+      }
+      memcpy(B + 8, R, 8);
+      AES_decrypt(B, B, key);
+      memcpy(R, B + 8, 8);
+    }
+  }
+  if (!iv) iv = default_iv;
+  if (memcmp(A, iv, 8)) {
+    OPENSSL_cleanse(out, inlen);
+    return 0;
+  }
+  return inlen;
+}