X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/5dd5f9ec28f304ca377c42fd7f711d6cf12b90e1..5c19dc3ae3bd8e40a9c028b0deddd50ff337692c:/OSX/libsecurity_cryptkit/lib/ellipticProj.h

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+/* 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.
+ ***************************************************************************
+ *
+ * ellipticProj.h - declaration of elliptic projective algebra routines.
+ *
+ * Revision History
+ * ----------------
+ * 10/06/98		ap 
+ *	Changed to compile with C++.
+ * 1 Sep 1998 at Apple
+ *	Created.
+ */
+
+#ifndef	_CRYPTKIT_ELLIPTIC_PROJ_H_
+#define _CRYPTKIT_ELLIPTIC_PROJ_H_
+
+#include "ckconfig.h"
+
+#if CRYPTKIT_ELL_PROJ_ENABLE
+
+#include "giantIntegers.h"
+#include "curveParams.h"
+
+/*
+ * A projective point.
+ */
+typedef struct {
+	giant x;
+	giant y;
+	giant z;
+} pointProjStruct;
+
+typedef pointProjStruct *pointProj;
+
+pointProj  /* Allocates a new projective point. */
+newPointProj(unsigned numDigits);
+
+void  /* Frees point. */
+freePointProj(pointProj pt);
+
+void  /* Copies point to point; pt2 := pt1. */
+ptopProj(pointProj pt1, pointProj pt2);
+
+void /* Point doubling. */
+ellDoubleProj(pointProj pt, curveParams *cp);
+
+void /* Point adding; pt0 := pt0 - pt1. */
+ellAddProj(pointProj pt0, pointProj pt1, curveParams *cp);
+
+void /* Point negation; pt := -pt. */
+ellNegProj(pointProj pt, curveParams *cp);
+
+void /* Point subtraction; pt0 := pt0 - pt1. */
+ellSubProj(pointProj pt0, pointProj pt1, curveParams *cp);
+
+void /* pt := pt * k, result normalized */
+ellMulProjSimple(pointProj pt0, giant k, curveParams *cp);
+
+void /* General elliptic mul; pt1 := k*pt0. */
+ellMulProj(pointProj pt0, pointProj pt1, giant k, curveParams *cp);
+
+void /* Generate normalized point (X, Y, 1) from given (x,y,z). */
+normalizeProj(pointProj pt, curveParams *cp);
+
+void /* Find a point (x, y, 1) on the curve. */
+findPointProj(pointProj pt, giant seed, curveParams *cp);
+
+#endif	/* CRYPTKIT_ELL_PROJ_ENABLE*/
+#endif	/* _CRYPTKIT_ELLIPTIC_PROJ_H_ */