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package com.sun.crypto.provider;

import jdk.internal.access.SharedSecrets;

import java.io.*;
import java.security.*;
import javax.crypto.*;

final class SealedObjectForKeyProtector extends SealedObject {

    @java.io.Serial
    static final long serialVersionUID = -3650226485480866989L;

    
The InputStreamFilter for a Key object inside this SealedObject. It can be either provided as a Security property or a system property (when provided as latter, it shadows the former). If the result of this filter is UNDECIDED, the system level filter defined by jdk.serialFilter will be consulted. The value of this property uses the same format of jdk.serialFilter.
/** * The InputStreamFilter for a Key object inside this SealedObject. It can * be either provided as a {@link Security} property or a system property * (when provided as latter, it shadows the former). If the result of this * filter is {@link java.io.ObjectInputFilter.Status.UNDECIDED}, the system * level filter defined by jdk.serialFilter will be consulted. The value * of this property uses the same format of jdk.serialFilter. */
private static final String KEY_SERIAL_FILTER = "jceks.key.serialFilter"; SealedObjectForKeyProtector(Serializable object, Cipher c) throws IOException, IllegalBlockSizeException { super(object, c); } SealedObjectForKeyProtector(SealedObject so) { super(so); } AlgorithmParameters getParameters() { AlgorithmParameters params = null; if (super.encodedParams != null) { try { params = AlgorithmParameters.getInstance("PBE", SunJCE.getInstance()); params.init(super.encodedParams); } catch (NoSuchAlgorithmException nsae) { throw new RuntimeException( "SunJCE provider is not configured properly"); } catch (IOException io) { throw new RuntimeException("Parameter failure: "+ io.getMessage()); } } return params; } final Key getKey(Cipher c, int maxLength) throws IOException, ClassNotFoundException, IllegalBlockSizeException, BadPaddingException { try (ObjectInputStream ois = SharedSecrets.getJavaxCryptoSealedObjectAccess() .getExtObjectInputStream(this, c)) { AccessController.doPrivileged( (PrivilegedAction<Void>) () -> { ois.setObjectInputFilter(new DeserializationChecker(maxLength)); return null; }); try { @SuppressWarnings("unchecked") Key t = (Key) ois.readObject(); return t; } catch (InvalidClassException ice) { String msg = ice.getMessage(); if (msg.contains("REJECTED")) { throw new IOException("Rejected by the" + " jceks.key.serialFilter or jdk.serialFilter" + " property", ice); } else { throw ice; } } } }
The filter for the content of a SealedObjectForKeyProtector. First, the jceks.key.serialFilter will be consulted. If the result is UNDECIDED, the system level jdk.serialFilter will be consulted.
/** * The filter for the content of a SealedObjectForKeyProtector. * * First, the jceks.key.serialFilter will be consulted. If the result * is UNDECIDED, the system level jdk.serialFilter will be consulted. */
private static class DeserializationChecker implements ObjectInputFilter { private static final ObjectInputFilter OWN_FILTER; static { String prop = AccessController.doPrivileged( (PrivilegedAction<String>) () -> { String tmp = System.getProperty(KEY_SERIAL_FILTER); if (tmp != null) { return tmp; } else { return Security.getProperty(KEY_SERIAL_FILTER); } }); OWN_FILTER = prop == null ? null : ObjectInputFilter.Config.createFilter(prop); } // Maximum possible length of anything inside private final int maxLength; private DeserializationChecker(int maxLength) { this.maxLength = maxLength; } @Override public ObjectInputFilter.Status checkInput( ObjectInputFilter.FilterInfo info) { if (info.arrayLength() > maxLength) { return Status.REJECTED; } if (info.serialClass() == Object.class) { return Status.UNDECIDED; } if (OWN_FILTER != null) { Status result = OWN_FILTER.checkInput(info); if (result != Status.UNDECIDED) { return result; } } ObjectInputFilter defaultFilter = ObjectInputFilter.Config.getSerialFilter(); if (defaultFilter != null) { return defaultFilter.checkInput(info); } return Status.UNDECIDED; } } }