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8171277: Elliptic Curves for Security in Crypto

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Implementations of X25519 and X448 key agreement in SunEC

Reviewed-by: mullan
This commit is contained in:
Adam Petcher 2018-05-08 09:47:28 -04:00
parent f15ab37909
commit f5a247a85f
28 changed files with 7938 additions and 95 deletions
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src/java.base/share/classes/java/security/interfaces/XECPublicKey.java Normal file
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/*
* Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package java.security.interfaces;
import java.math.BigInteger;
import java.security.PublicKey;
/**
* An interface for an elliptic curve public key as defined by RFC 7748.
* These keys are distinct from the keys represented by {@code ECPublicKey},
* and they are intended for use with algorithms based on RFC 7748 such as the
* XDH {@code KeyAgreement} algorithm.
*
* An XEC public key is a particular point on the curve, which is represented
* using only its u-coordinate as described in RFC 7748. A u-coordinate is an
* element of the field of integers modulo some value that is determined by
* the algorithm parameters. This field element is represented by a BigInteger
* which may hold any value. That is, the BigInteger is not restricted to the
* range of canonical field elements.
*
* @since 11
*/
public interface XECPublicKey extends XECKey, PublicKey {
/**
* Get the u coordinate of the point.
*
* @return the u-coordinate, represented using a BigInteger which may hold
* any value
*/
BigInteger getU();
}