jdk/src/share/native/sun/security/ec/ecl_curve.c
changeset 3492 e549cea58864
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/native/sun/security/ec/ecl_curve.c	Tue Aug 11 16:52:26 2009 +0100
@@ -0,0 +1,216 @@
+/* *********************************************************************
+ *
+ * Sun elects to have this file available under and governed by the
+ * Mozilla Public License Version 1.1 ("MPL") (see
+ * http://www.mozilla.org/MPL/ for full license text). For the avoidance
+ * of doubt and subject to the following, Sun also elects to allow
+ * licensees to use this file under the MPL, the GNU General Public
+ * License version 2 only or the Lesser General Public License version
+ * 2.1 only. Any references to the "GNU General Public License version 2
+ * or later" or "GPL" in the following shall be construed to mean the
+ * GNU General Public License version 2 only. Any references to the "GNU
+ * Lesser General Public License version 2.1 or later" or "LGPL" in the
+ * following shall be construed to mean the GNU Lesser General Public
+ * License version 2.1 only. However, the following notice accompanied
+ * the original version of this file:
+ *
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is the elliptic curve math library.
+ *
+ * The Initial Developer of the Original Code is
+ * Sun Microsystems, Inc.
+ * Portions created by the Initial Developer are Copyright (C) 2003
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Douglas Stebila <douglas@stebila.ca>, Sun Microsystems Laboratories
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ *********************************************************************** */
+/*
+ * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident   "%Z%%M% %I%     %E% SMI"
+
+#include "ecl.h"
+#include "ecl-curve.h"
+#include "ecl-priv.h"
+#ifndef _KERNEL
+#include <stdlib.h>
+#include <string.h>
+#endif
+
+#define CHECK(func) if ((func) == NULL) { res = 0; goto CLEANUP; }
+
+/* Duplicates an ECCurveParams */
+ECCurveParams *
+ECCurveParams_dup(const ECCurveParams * params, int kmflag)
+{
+        int res = 1;
+        ECCurveParams *ret = NULL;
+
+#ifdef _KERNEL
+        ret = (ECCurveParams *) kmem_zalloc(sizeof(ECCurveParams), kmflag);
+#else
+        CHECK(ret = (ECCurveParams *) calloc(1, sizeof(ECCurveParams)));
+#endif
+        if (params->text != NULL) {
+#ifdef _KERNEL
+                ret->text = kmem_alloc(strlen(params->text) + 1, kmflag);
+                bcopy(params->text, ret->text, strlen(params->text) + 1);
+#else
+                CHECK(ret->text = strdup(params->text));
+#endif
+        }
+        ret->field = params->field;
+        ret->size = params->size;
+        if (params->irr != NULL) {
+#ifdef _KERNEL
+                ret->irr = kmem_alloc(strlen(params->irr) + 1, kmflag);
+                bcopy(params->irr, ret->irr, strlen(params->irr) + 1);
+#else
+                CHECK(ret->irr = strdup(params->irr));
+#endif
+        }
+        if (params->curvea != NULL) {
+#ifdef _KERNEL
+                ret->curvea = kmem_alloc(strlen(params->curvea) + 1, kmflag);
+                bcopy(params->curvea, ret->curvea, strlen(params->curvea) + 1);
+#else
+                CHECK(ret->curvea = strdup(params->curvea));
+#endif
+        }
+        if (params->curveb != NULL) {
+#ifdef _KERNEL
+                ret->curveb = kmem_alloc(strlen(params->curveb) + 1, kmflag);
+                bcopy(params->curveb, ret->curveb, strlen(params->curveb) + 1);
+#else
+                CHECK(ret->curveb = strdup(params->curveb));
+#endif
+        }
+        if (params->genx != NULL) {
+#ifdef _KERNEL
+                ret->genx = kmem_alloc(strlen(params->genx) + 1, kmflag);
+                bcopy(params->genx, ret->genx, strlen(params->genx) + 1);
+#else
+                CHECK(ret->genx = strdup(params->genx));
+#endif
+        }
+        if (params->geny != NULL) {
+#ifdef _KERNEL
+                ret->geny = kmem_alloc(strlen(params->geny) + 1, kmflag);
+                bcopy(params->geny, ret->geny, strlen(params->geny) + 1);
+#else
+                CHECK(ret->geny = strdup(params->geny));
+#endif
+        }
+        if (params->order != NULL) {
+#ifdef _KERNEL
+                ret->order = kmem_alloc(strlen(params->order) + 1, kmflag);
+                bcopy(params->order, ret->order, strlen(params->order) + 1);
+#else
+                CHECK(ret->order = strdup(params->order));
+#endif
+        }
+        ret->cofactor = params->cofactor;
+
+  CLEANUP:
+        if (res != 1) {
+                EC_FreeCurveParams(ret);
+                return NULL;
+        }
+        return ret;
+}
+
+#undef CHECK
+
+/* Construct ECCurveParams from an ECCurveName */
+ECCurveParams *
+EC_GetNamedCurveParams(const ECCurveName name, int kmflag)
+{
+        if ((name <= ECCurve_noName) || (ECCurve_pastLastCurve <= name) ||
+                                        (ecCurve_map[name] == NULL)) {
+                return NULL;
+        } else {
+                return ECCurveParams_dup(ecCurve_map[name], kmflag);
+        }
+}
+
+/* Free the memory allocated (if any) to an ECCurveParams object. */
+void
+EC_FreeCurveParams(ECCurveParams * params)
+{
+        if (params == NULL)
+                return;
+        if (params->text != NULL)
+#ifdef _KERNEL
+                kmem_free(params->text, strlen(params->text) + 1);
+#else
+                free(params->text);
+#endif
+        if (params->irr != NULL)
+#ifdef _KERNEL
+                kmem_free(params->irr, strlen(params->irr) + 1);
+#else
+                free(params->irr);
+#endif
+        if (params->curvea != NULL)
+#ifdef _KERNEL
+                kmem_free(params->curvea, strlen(params->curvea) + 1);
+#else
+                free(params->curvea);
+#endif
+        if (params->curveb != NULL)
+#ifdef _KERNEL
+                kmem_free(params->curveb, strlen(params->curveb) + 1);
+#else
+                free(params->curveb);
+#endif
+        if (params->genx != NULL)
+#ifdef _KERNEL
+                kmem_free(params->genx, strlen(params->genx) + 1);
+#else
+                free(params->genx);
+#endif
+        if (params->geny != NULL)
+#ifdef _KERNEL
+                kmem_free(params->geny, strlen(params->geny) + 1);
+#else
+                free(params->geny);
+#endif
+        if (params->order != NULL)
+#ifdef _KERNEL
+                kmem_free(params->order, strlen(params->order) + 1);
+#else
+                free(params->order);
+#endif
+#ifdef _KERNEL
+        kmem_free(params, sizeof(ECCurveParams));
+#else
+        free(params);
+#endif
+}