/*
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* The contents of this file are subject to the terms of the Common Development and
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* Distribution License (the License). You may not use this file except in compliance with the
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* License.
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*
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* You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
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* specific language governing permission and limitations under the License.
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*
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* When distributing Covered Software, include this CDDL Header Notice in each file and include
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* the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
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* Header, with the fields enclosed by brackets [] replaced by your own identifying
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* information: "Portions Copyright [year] [name of copyright owner]".
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*
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* Copyright 2016 ForgeRock AS.
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*/
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package org.opends.server.crypto;
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import org.forgerock.opendj.ldap.ByteSequence;
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import org.forgerock.opendj.ldap.ByteString;
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import org.forgerock.opendj.ldap.DecodeException;
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import org.opends.server.types.CryptoManager;
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import org.opends.server.types.CryptoManagerException;
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import javax.crypto.CipherInputStream;
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import javax.crypto.CipherOutputStream;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.security.GeneralSecurityException;
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import java.security.NoSuchAlgorithmException;
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import static org.opends.messages.CoreMessages.*;
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/** Defines cipher transformation and hash algorithm for cryptographic related operations. */
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public class CryptoSuite
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{
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private String cipherTransformation;
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private int cipherKeyLength;
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private final CryptoManager cryptoManager;
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/**
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* Declares a new CryptoSuite with provided parameters.
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* @param cryptoManager the CryptoManager to use for cryptographic operations
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* @param cipherTransformation the initial cipher transformation
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* @param cipherKeyLength the initial key length for the cipher
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*/
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public CryptoSuite(CryptoManager cryptoManager, String cipherTransformation, int cipherKeyLength)
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{
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this.cryptoManager = cryptoManager;
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this.cipherTransformation = cipherTransformation;
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this.cipherKeyLength = cipherKeyLength;
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}
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/**
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* Returns the cipher transformation to use.
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*
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* @return the cipher transformation to use
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*/
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public String getCipherTransformation()
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{
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return cipherTransformation;
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}
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/**
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* Returns the cipher key length to use.
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*
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* @return the cipher key length to use
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*/
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public int getCipherKeyLength()
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{
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return cipherKeyLength;
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}
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/**
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* Sets the cipher transformation for the CryptoSuite.
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*
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* @param cipherTransformation the new cipher transformation
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*/
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public void setCipherTransformation(String cipherTransformation)
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{
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this.cipherTransformation = cipherTransformation;
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}
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/**
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* Sets the key length for the CryptoSuite.
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*
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* @param cipherKeyLength the new key length
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*/
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public void setCipherKeyLength(int cipherKeyLength)
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{
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this.cipherKeyLength = cipherKeyLength;
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}
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/**
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* Decrypts data using the key specified in the prologue.
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*
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* @param data the cipher-text to be decrypted (contains prologue)
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* @return a byte array with the clear-text
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* @throws GeneralSecurityException if a problem occurs while decrypting the data
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* @throws CryptoManagerException if a problem occurs during cipher initialization
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*/
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public byte[] decrypt(byte[] data) throws GeneralSecurityException, CryptoManagerException
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{
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return cryptoManager.decrypt(data);
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}
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/**
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* Encrypts data with the configured cipher transformation and key length.
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*
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* @param data the clear-text data to encrypt
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* @return a byte array with a prologue containing the key identifier followed by cipher-text
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* @throws GeneralSecurityException if a problem occurs while encrypting the data
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* @throws CryptoManagerException if a problem occurs during cipher initialization
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*/
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public byte[] encrypt(byte[] data) throws GeneralSecurityException, CryptoManagerException
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{
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return cryptoManager.encrypt(cipherTransformation, cipherKeyLength, data);
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}
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/**
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* Returns a {@link CipherOutputStream} for encrypting through a sequence of
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* OutputStreams.
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*
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* @param os the up-link OutputStream
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* @return a {@link CipherOutputStream} for encrypting through a sequence of
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* OutputStreams
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* @throws CryptoManagerException if a problem occurs during cipher initialization
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*/
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public CipherOutputStream getCipherOutputStream(OutputStream os) throws CryptoManagerException
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{
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return cryptoManager.getCipherOutputStream(cipherTransformation, cipherKeyLength, os);
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}
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/**
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* Returns a {@link CipherInputStream} for decrypting through a sequence of InputStreams.
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*
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* @param is the up-link InputStream
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* @return a {@link CipherInputStream} for decrypting through a sequence of InputStreams.
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* @throws CryptoManagerException if a problem occurs during cipher initialization
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*/
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public CipherInputStream getCipherInputStream(InputStream is) throws CryptoManagerException
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{
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return cryptoManager.getCipherInputStream(is);
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}
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/**
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* Returns a ByteString of 6 bytes hash of the data.
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*
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* @param data a ByteSequence containing the input data to be hashed
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* @return a ByteString of 6 bytes hash of the data.
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* @throws DecodeException if digest of the data cannot be computed
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*/
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public ByteString hash48(ByteSequence data) throws DecodeException
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{
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try
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{
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byte[] hash = cryptoManager.digest("SHA-1", data.toByteArray());
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return ByteString.valueOfBytes(hash, 0, 6);
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}
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catch (NoSuchAlgorithmException e)
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{
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throw DecodeException.error(ERR_CANNOT_HASH_DATA.get());
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}
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}
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@Override
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public String toString()
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{
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StringBuilder builder = new StringBuilder();
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builder.append("CryptoSuite(cipherTransformation=");
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builder.append(cipherTransformation);
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builder.append(", keyLength=");
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builder.append(cipherKeyLength);
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builder.append(")");
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return builder.toString();
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}
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}
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