+/* Copyright (c) 1998,2011,2014 Apple Inc. All Rights Reserved.
+ *
+ * NOTICE: USE OF THE MATERIALS ACCOMPANYING THIS NOTICE IS SUBJECT
+ * TO THE TERMS OF THE SIGNED "FAST ELLIPTIC ENCRYPTION (FEE) REFERENCE
+ * SOURCE CODE EVALUATION AGREEMENT" BETWEEN APPLE, INC. AND THE
+ * ORIGINAL LICENSEE THAT OBTAINED THESE MATERIALS FROM APPLE,
+ * INC. ANY USE OF THESE MATERIALS NOT PERMITTED BY SUCH AGREEMENT WILL
+ * EXPOSE YOU TO LIABILITY.
+ ***************************************************************************
+ *
+ * FeeHash.h - generic, portable MD5 hash object
+ *
+ * Revision History
+ * ----------------
+ * 22 Aug 96 at NeXT
+ * Created.
+ */
+
+#ifndef _CK_FEEHASH_H_
+#define _CK_FEEHASH_H_
+
+#if !defined(__MACH__)
+#include <ckconfig.h>
+#include <feeTypes.h>
+#else
+#include <security_cryptkit/ckconfig.h>
+#include <security_cryptkit/feeTypes.h>
+#endif
+
+#if CRYPTKIT_MD5_ENABLE
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Opaque hash object handle.
+ */
+typedef void *feeHash;
+
+/*
+ * Alloc and init an empty hash object.
+ */
+feeHash feeHashAlloc(void);
+
+/*
+ * reinitialize a hash object for reuse.
+ */
+void feeHashReinit(feeHash hash);
+
+/*
+ * Free a hash object.
+ */
+void feeHashFree(feeHash hash);
+
+/*
+ * Add some data to the hash object.
+ */
+void feeHashAddData(feeHash hash,
+ const unsigned char *data,
+ unsigned dataLen);
+
+/*
+ * Obtain a pointer to completed message digest. This disables further calls
+ * to feeHashAddData(). This pointer is NOT malloc'd; the associated data
+ * persists only as long as this object does.
+ */
+unsigned char *feeHashDigest(feeHash hash);
+
+/*
+ * Obtain the length of the message digest.
+ */
+unsigned feeHashDigestLen(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* CRYPTKIT_MD5_ENABLE */
+
+#endif /*_CK_FEEHASH_H_*/