Security-57031.1.35.tar.gz

[apple/security.git] / Security / libsecurity_cryptkit / lib / ellipticMeasure.h

diff --git a/Security/libsecurity_cryptkit/lib/ellipticMeasure.h b/Security/libsecurity_cryptkit/lib/ellipticMeasure.h
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+/*
+       File:           ellipticMeasure.h
+
+       Contains:       xxx put contents here xxx
+
+
+       Copyright:      Copyright (c) 1998,2011,2014 Apple Inc.
+                All rights reserved.
+
+       Change History (most recent first):
+
+       <7>     10/06/98        ap              Changed to compile with C++.
+
+       To Do:
+*/
+
+/* 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.
+ ***************************************************************************
+ *
+ * Measurement of feemods and mulgs withing an elliptic_simple() call.
+ */
+
+#include "feeDebug.h"
+
+#ifdef FEE_DEBUG
+#define ELLIPTIC_MEASURE       0
+#else  // FEE_DEBUG
+#define ELLIPTIC_MEASURE       0       /* always off */
+#endif // FEE_DEBUG
+
+#if    ELLIPTIC_MEASURE
+
+extern int doEllMeasure;       // gather stats on/off */
+extern int bitsInN;
+extern int numFeeMods;
+extern int numMulgs;
+
+#define START_ELL_MEASURE(n)           \
+       doEllMeasure = 1;               \
+       bitsInN = bitlen(n);            \
+       numFeeMods = 0;                 \
+       numMulgs = 0;
+
+#define END_ELL_MEASURE                doEllMeasure = 0;
+
+#define INCR_FEEMODS                   \
+       if(doEllMeasure) {              \
+               numFeeMods++;           \
+       }
+
+#define INCR_MULGS                     \
+       if(doEllMeasure) {              \
+               numMulgs++;             \
+       }
+
+/*
+ * These two are used around mulg() calls in feemod() itself; they
+ * inhibit the counting of those mulg() calls.
+ */
+#define PAUSE_ELL_MEASURE                              \
+       {                                               \
+               int tempEllMeasure = doEllMeasure;      \
+               doEllMeasure = 0;
+
+#define RESUME_ELL_MEASURE                             \
+               doEllMeasure = tempEllMeasure;          \
+       }
+
+#else  // ELLIPTIC_MEASURE
+
+#define START_ELL_MEASURE(n)
+#define END_ELL_MEASURE
+#define INCR_FEEMODS
+#define INCR_MULGS
+#define PAUSE_ELL_MEASURE
+#define RESUME_ELL_MEASURE
+
+#endif // ELLIPTIC_MEASURE