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/*
* Copyright (C) 2015 Dominik Schürmann <dominik@dominikschuermann.de>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.sufficientlysecure.keychain.service.input;
import java.nio.ByteBuffer;
import java.util.Collections;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import android.os.Parcel;
import android.os.Parcelable;
import org.sufficientlysecure.keychain.util.Passphrase;
/**
* This is a base class for the input of crypto operations.
*/
public class CryptoInputParcel implements Parcelable {
final Date mSignatureTime;
final Passphrase mPassphrase;
// this map contains both decrypted session keys and signed hashes to be
// used in the crypto operation described by this parcel.
private HashMap<ByteBuffer, byte[]> mCryptoData = new HashMap<>();
public CryptoInputParcel() {
mSignatureTime = new Date();
mPassphrase = null;
}
public CryptoInputParcel(Date signatureTime, Passphrase passphrase) {
mSignatureTime = signatureTime == null ? new Date() : signatureTime;
mPassphrase = passphrase;
}
public CryptoInputParcel(Passphrase passphrase) {
mSignatureTime = new Date();
mPassphrase = passphrase;
}
public CryptoInputParcel(Date signatureTime) {
mSignatureTime = signatureTime == null ? new Date() : signatureTime;
mPassphrase = null;
}
protected CryptoInputParcel(Parcel source) {
mSignatureTime = new Date(source.readLong());
mPassphrase = source.readParcelable(getClass().getClassLoader());
{
int count = source.readInt();
mCryptoData = new HashMap<>(count);
for (int i = 0; i < count; i++) {
byte[] key = source.createByteArray();
byte[] value = source.createByteArray();
mCryptoData.put(ByteBuffer.wrap(key), value);
}
}
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeLong(mSignatureTime.getTime());
dest.writeParcelable(mPassphrase, 0);
dest.writeInt(mCryptoData.size());
for (HashMap.Entry<ByteBuffer, byte[]> entry : mCryptoData.entrySet()) {
dest.writeByteArray(entry.getKey().array());
dest.writeByteArray(entry.getValue());
}
}
public void addCryptoData(byte[] hash, byte[] signedHash) {
mCryptoData.put(ByteBuffer.wrap(hash), signedHash);
}
public void addCryptoData(Map<ByteBuffer, byte[]> cachedSessionKeys) {
mCryptoData.putAll(cachedSessionKeys);
}
public Map<ByteBuffer, byte[]> getCryptoData() {
return mCryptoData;
}
public Date getSignatureTime() {
return mSignatureTime;
}
public boolean hasPassphrase() {
return mPassphrase != null;
}
public Passphrase getPassphrase() {
return mPassphrase;
}
public static final Creator<CryptoInputParcel> CREATOR = new Creator<CryptoInputParcel>() {
public CryptoInputParcel createFromParcel(final Parcel source) {
return new CryptoInputParcel(source);
}
public CryptoInputParcel[] newArray(final int size) {
return new CryptoInputParcel[size];
}
};
@Override
public String toString() {
StringBuilder b = new StringBuilder();
b.append("CryptoInput: { ");
b.append(mSignatureTime).append(" ");
if (mPassphrase != null) {
b.append("passphrase");
}
if (mCryptoData != null) {
b.append(mCryptoData.size());
b.append(" hashes ");
}
b.append("}");
return b.toString();
}
}
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