/*

 * Copyright (c) 2019, 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

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package sun.security.pkcs11.wrapper;

import java.security.ProviderException;

import java.security.spec.PSSParameterSpec;

import java.security.spec.MGF1ParameterSpec;

/**

 * This class represents the necessary parameters required by the

 * CKM_RSA_PKCS_PSS mechanism as defined in CK_RSA_PKCS_PSS_PARAMS structure.<p>

 * <B>PKCS#11 structure:</B>

 * <PRE>

 * typedef struct CK_RSA_PKCS_PSS_PARAMS {

 *    CK_MECHANISM_TYPE    hashAlg;

 *    CK_RSA_PKCS_MGF_TYPE mgf;

 *    CK_ULONG             sLen;

 * } CK_RSA_PKCS_PSS_PARAMS;

 * </PRE>

 *

 * @since   13

 */

public class CK_RSA_PKCS_PSS_PARAMS {

    private final long hashAlg;

    private final long mgf;

    private final long sLen;

    public CK_RSA_PKCS_PSS_PARAMS(String hashAlg, String mgfAlg,

            String mgfHash, int sLen) {

        this.hashAlg = Functions.getHashMechId(hashAlg);

        if (!mgfAlg.equals("MGF1")) {

            throw new ProviderException("Only MGF1 is supported");

        }

        // no dash in PKCS#11 mechanism names

        this.mgf = Functions.getMGFId("CKG_MGF1_" + mgfHash.replaceFirst("-", ""));

        this.sLen = sLen;

    }

    @Override

    public boolean equals(Object o) {

        if (o == this) {

            return true;

        }

        if (!(o instanceof CK_RSA_PKCS_PSS_PARAMS)) {

            return false;

        }

        CK_RSA_PKCS_PSS_PARAMS other = (CK_RSA_PKCS_PSS_PARAMS) o;

        return ((other.hashAlg == hashAlg) &&

                (other.mgf == mgf) &&

                (other.sLen == sLen));

    }

    @Override

    public int hashCode() {

        return (int)(hashAlg << 2 + mgf << 1 + sLen);

    }

    @Override

    public String toString() {

        StringBuilder sb = new StringBuilder();

        sb.append(Constants.INDENT);

        sb.append("hashAlg: ");

        sb.append(Functions.toFullHexString(hashAlg));

        sb.append(Constants.NEWLINE);

        sb.append(Constants.INDENT);

        sb.append("mgf: ");

        sb.append(Functions.toFullHexString(mgf));

        sb.append(Constants.NEWLINE);

        sb.append(Constants.INDENT);

        sb.append("sLen(in bytes): ");

        sb.append(sLen);

        return sb.toString();

    }

}