X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/80e2389990082500d76eb566d4946be3e786c3ef..d8f41ccd20de16f8ebe2ccc84d47bf1cb2b26bbb:/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