Security-55163.44.tar.gz

[apple/security.git] / libsecurity_ssl / lib / sslNullCipher.c

diff --git a/libsecurity_ssl/lib/sslNullCipher.c b/libsecurity_ssl/lib/sslNullCipher.c
new file mode 100644 (file)
index 0000000..29b7273
--- /dev/null
+++ b/libsecurity_ssl/lib/sslNullCipher.c
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2000-2001,2005-2008,2010-2012 Apple Inc. All Rights Reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+#include "sslContext.h"
+
+#include <string.h>
+
+static OSStatus NullInit(
+       uint8_t *key,
+       uint8_t *iv,
+       CipherContext *cipherCtx,
+       SSLContext *ctx);
+static OSStatus NullCrypt(
+       const uint8_t *src,
+       uint8_t *dest,
+    size_t len,
+       CipherContext *cipherCtx,
+       SSLContext *ctx);
+static OSStatus NullFinish(
+       CipherContext *cipherCtx,
+       SSLContext *ctx);
+
+extern const SSLSymmetricCipher SSLCipherNull;
+
+const SSLSymmetricCipher SSLCipherNull = {
+    0,          /* Key size in bytes (ignoring parity) */
+    0,          /* Secret key size */
+    0,          /* IV size */
+    0,          /* Block size */
+    -1,         /* CC cipher (unused by Null*) */
+    NullInit,
+    NullCrypt,
+    NullCrypt,
+    NullFinish
+};
+
+static OSStatus NullInit(
+       uint8_t *key,
+       uint8_t *iv,
+       CipherContext *cipherCtx,
+       SSLContext *ctx)
+{
+       return noErr;
+}
+
+static OSStatus NullCrypt(
+       const uint8_t *src,
+       uint8_t *dest,
+    size_t len,
+       CipherContext *cipherCtx,
+       SSLContext *ctx)
+{
+       if (src != dest)
+        memcpy(dest, src, len);
+    return noErr;
+}
+
+static OSStatus NullFinish(
+       CipherContext *cipherCtx,
+       SSLContext *ctx)
+{
+       return noErr;
+}