Built motion from commit 6a09e18b.|2.6.11

[motion2.git] / legacy-libs / grpc / deps / grpc / third_party / boringssl / crypto / fipsmodule / aes / key_wrap.c

diff --git a/legacy-libs/grpc/deps/grpc/third_party/boringssl/crypto/fipsmodule/aes/key_wrap.c b/legacy-libs/grpc/deps/grpc/third_party/boringssl/crypto/fipsmodule/aes/key_wrap.c
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+++ b/legacy-libs/grpc/deps/grpc/third_party/boringssl/crypto/fipsmodule/aes/key_wrap.c
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+/* ====================================================================
+ * Copyright (c) 2001-2011 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
+ *    openssl-core@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 <limits.h>
+#include <string.h>
+
+#include <openssl/mem.h>
+
+#include "../../internal.h"
+
+
+// kDefaultIV is the default IV value given in RFC 3394, 2.2.3.1.
+static const uint8_t kDefaultIV[] = {
+    0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6,
+};
+
+static const unsigned kBound = 6;
+
+int AES_wrap_key(const AES_KEY *key, const uint8_t *iv, uint8_t *out,
+                 const uint8_t *in, size_t in_len) {
+  // See RFC 3394, section 2.2.1.
+
+  if (in_len > INT_MAX - 8 || in_len < 8 || in_len % 8 != 0) {
+    return -1;
+  }
+
+  if (iv == NULL) {
+    iv = kDefaultIV;
+  }
+
+  OPENSSL_memmove(out + 8, in, in_len);
+  uint8_t A[AES_BLOCK_SIZE];
+  OPENSSL_memcpy(A, iv, 8);
+
+  size_t n = in_len / 8;
+
+  for (unsigned j = 0; j < kBound; j++) {
+    for (size_t i = 1; i <= n; i++) {
+      OPENSSL_memcpy(A + 8, out + 8 * i, 8);
+      AES_encrypt(A, A, key);
+
+      uint32_t t = (uint32_t)(n * j + i);
+      A[7] ^= t & 0xff;
+      A[6] ^= (t >> 8) & 0xff;
+      A[5] ^= (t >> 16) & 0xff;
+      A[4] ^= (t >> 24) & 0xff;
+      OPENSSL_memcpy(out + 8 * i, A + 8, 8);
+    }
+  }
+
+  OPENSSL_memcpy(out, A, 8);
+  return (int)in_len + 8;
+}
+
+int AES_unwrap_key(const AES_KEY *key, const uint8_t *iv, uint8_t *out,
+                   const uint8_t *in, size_t in_len) {
+  // See RFC 3394, section 2.2.2.
+
+  if (in_len > INT_MAX || in_len < 16 || in_len % 8 != 0) {
+    return -1;
+  }
+
+  if (iv == NULL) {
+    iv = kDefaultIV;
+  }
+
+  uint8_t A[AES_BLOCK_SIZE];
+  OPENSSL_memcpy(A, in, 8);
+  OPENSSL_memmove(out, in + 8, in_len - 8);
+
+  size_t n = (in_len / 8) - 1;
+
+  for (unsigned j = kBound - 1; j < kBound; j--) {
+    for (size_t i = n; i > 0; i--) {
+      uint32_t t = (uint32_t)(n * j + i);
+      A[7] ^= t & 0xff;
+      A[6] ^= (t >> 8) & 0xff;
+      A[5] ^= (t >> 16) & 0xff;
+      A[4] ^= (t >> 24) & 0xff;
+      OPENSSL_memcpy(A + 8, out + 8 * (i - 1), 8);
+      AES_decrypt(A, A, key);
+      OPENSSL_memcpy(out + 8 * (i - 1), A + 8, 8);
+    }
+  }
+
+  if (CRYPTO_memcmp(A, iv, 8) != 0) {
+    return -1;
+  }
+
+  return (int)in_len - 8;
+}