Security-57031.1.35.tar.gz

[apple/security.git] / Security / libsecurity_ssl / lib / sslDigests.c

diff --git a/Security/libsecurity_ssl/lib/sslDigests.c b/Security/libsecurity_ssl/lib/sslDigests.c
new file mode 100644 (file)
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--- /dev/null
+++ b/Security/libsecurity_ssl/lib/sslDigests.c
@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2000-2001,2005-2007,2010-2014 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@
+ */
+
+/*
+ * sslDigests.c - Interface between SSL and SHA, MD5 digest implementations
+ */
+
+#include "sslMemory.h"
+#include "sslDigests.h"
+#include <Security/SecBase.h>
+
+#define DIGEST_PRINT           0
+#if            DIGEST_PRINT
+#define dgprintf(s)    printf s
+#else
+#define dgprintf(s)
+#endif
+
+
+/*
+ * Public general hash functions
+ */
+
+/*
+ * A convenience wrapper for HashReference.clone, which has the added benefit of
+ * allocating the state buffer for the caller.
+ */
+OSStatus
+CloneHashState(
+       const HashReference *ref, 
+       const SSLBuffer *state, 
+       SSLBuffer *newState)
+{   
+       OSStatus      err;
+    if ((err = SSLAllocBuffer(newState, ref->contextSize)))
+        return err;
+       return ref->clone(state, newState);
+}
+
+/*
+ * Wrapper for HashReference.init.
+ */
+OSStatus
+ReadyHash(const HashReference *ref, SSLBuffer *state)
+{   
+       OSStatus      err;
+    if ((err = SSLAllocBuffer(state, ref->contextSize)))
+        return err;
+    return ref->init(state);
+}
+
+/*
+ * Wrapper for HashReference.close. Tolerates NULL state and frees it if it's
+ * there.
+ */
+OSStatus CloseHash(const HashReference *ref, SSLBuffer *state)
+{
+       OSStatus serr;
+
+       if(state->data == NULL) {
+               return errSecSuccess;
+       }
+       serr = ref->close(state);
+       if(serr) {
+               return serr;
+       }
+       return SSLFreeBuffer(state);
+}