/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package java.security;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.security.cert.Certificate;
import java.security.cert.CertificateException;
import java.util.Date;
import java.util.Enumeration;
import javax.crypto.SecretKey;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.PasswordCallback;
import org.apache.harmony.security.internal.nls.Messages;
/**
* {@code KeyStoreSpi} is the Service Provider Interface (SPI) definition for
* {@link KeyStore}.
*
* @see KeyStore
* @since Android 1.0
*/
public abstract class KeyStoreSpi {
/**
* Returns the key with the given alias, using the password to recover the
* key from the store.
*
* @param alias
* the alias for the entry.
* @param password
* the password used to recover the key.
* @return the key with the specified alias, or {@code null} if the
* specified alias is not bound to an entry.
* @throws NoSuchAlgorithmException
* if the algorithm for recovering the key is not available.
* @throws UnrecoverableKeyException
* if the key can not be recovered.
* @since Android 1.0
*/
public abstract Key engineGetKey(String alias, char[] password)
throws NoSuchAlgorithmException, UnrecoverableKeyException;
/**
* Returns the certificate chain for the entry with the given alias.
*
* @param alias
* the alias for the entry
* @return the certificate chain for the entry with the given alias, or
* {@code null} if the specified alias is not bound to an entry.
* @since Android 1.0
*/
public abstract Certificate[] engineGetCertificateChain(String alias);
/**
* Returns the trusted certificate for the entry with the given alias.
*
* @param alias
* the alias for the entry.
* @return the trusted certificate for the entry with the given alias, or
* {@code null} if the specified alias is not bound to an entry.
* @since Android 1.0
*/
public abstract Certificate engineGetCertificate(String alias);
/**
* Returns the creation date of the entry with the given alias.
*
* @param alias
* the alias for the entry.
* @return the creation date, or {@code null} if the specified alias is not
* bound to an entry.
* @since Android 1.0
*/
public abstract Date engineGetCreationDate(String alias);
/**
* Associates the given alias with the key, password and certificate chain.
* <p>
* If the specified alias already exists, it will be reassigned.
* </p>
*
* @param alias
* the alias for the key.
* @param key
* the key.
* @param password
* the password.
* @param chain
* the certificate chain.
* @throws KeyStoreException
* if the specified key can not be protected, or if this
* operation fails for another reason.
* @throws IllegalArgumentException
* if {@code key} is a {@code PrivateKey} and {@code chain} does
* not contain any certificates.
* @since Android 1.0
*/
public abstract void engineSetKeyEntry(String alias, Key key,
char[] password, Certificate[] chain) throws KeyStoreException;
/**
* Associates the given alias with a key and a certificate chain.
* <p>
* If the specified alias already exists, it will be reassigned.
* </p>
*
* @param alias
* the alias for the key.
* @param key
* the key in an encoded format.
* @param chain
* the certificate chain.
* @throws KeyStoreException
* if this operation fails.
* @throws IllegalArgumentException
* if {@code key} is a {@code PrivateKey} and {@code chain}
* does.
* @since Android 1.0
*/
public abstract void engineSetKeyEntry(String alias, byte[] key,
Certificate[] chain) throws KeyStoreException;
/**
* Associates the given alias with a certificate.
* <p>
* If the specified alias already exists, it will be reassigned.
* </p>
*
* @param alias
* the alias for the certificate.
* @param cert
* the certificate.
* @throws KeyStoreException
* if an existing alias is not associated to an entry containing
* a trusted certificate, or this method fails for any other
* reason.
* @since Android 1.0
*/
public abstract void engineSetCertificateEntry(String alias,
Certificate cert) throws KeyStoreException;
/**
* Deletes the entry identified with the given alias from this {@code
* KeyStoreSpi}.
*
* @param alias
* the alias for the entry.
* @throws KeyStoreException
* if the entry can not be deleted.
* @since Android 1.0
*/
public abstract void engineDeleteEntry(String alias)
throws KeyStoreException;
/**
* Returns an {@code Enumeration} over all alias names stored in this
* {@code KeyStoreSpi}.
*
* @return an {@code Enumeration} over all alias names stored in this
* {@code KeyStoreSpi}.
* @since Android 1.0
*/
public abstract Enumeration<String> engineAliases();
/**
* Indicates whether the given alias is present in this {@code KeyStoreSpi}.
*
* @param alias
* the alias of an entry.
* @return {@code true} if the alias exists, {@code false} otherwise.
* @since Android 1.0
*/
public abstract boolean engineContainsAlias(String alias);
/**
* Returns the number of entries stored in this {@code KeyStoreSpi}.
*
* @return the number of entries stored in this {@code KeyStoreSpi}.
* @since Android 1.0
*/
public abstract int engineSize();
/**
* Indicates whether the specified alias is associated with either a
* {@link KeyStore.PrivateKeyEntry} or a {@link KeyStore.SecretKeyEntry}.
*
* @param alias
* the alias of an entry.
* @return {@code true} if the given alias is associated with a key entry.
* @since Android 1.0
*/
public abstract boolean engineIsKeyEntry(String alias);
/**
* Indicates whether the specified alias is associated with a
* {@link KeyStore.TrustedCertificateEntry}.
*
* @param alias
* the alias of an entry.
* @return {@code true} if the given alias is associated with a certificate
* entry.
* @since Android 1.0
*/
public abstract boolean engineIsCertificateEntry(String alias);
/**
* Returns the alias associated with the first entry whose certificate
* matches the specified certificate.
*
* @param cert
* the certificate to find the associated entry's alias for.
* @return the alias or {@code null} if no entry with the specified
* certificate can be found.
* @since Android 1.0
*/
public abstract String engineGetCertificateAlias(Certificate cert);
/**
* Writes this {@code KeyStoreSpi} to the specified {@code OutputStream}.
* The data written to the {@code OutputStream} is protected by the
* specified password.
*
* @param stream
* the {@code OutputStream} to write the store's data to.
* @param password
* the password to protect the data.
* @throws IOException
* if a problem occurred while writing to the stream.
* @throws NoSuchAlgorithmException
* if the required algorithm is not available.
* @throws CertificateException
* if the an exception occurred while storing the certificates
* of this code {@code KeyStoreSpi}.
* @since Android 1.0
*/
public abstract void engineStore(OutputStream stream, char[] password)
throws IOException, NoSuchAlgorithmException, CertificateException;
/**
* Stores this {@code KeyStoreSpi} using the specified {@code
* LoadStoreParameter}.
*
* @param param
* the {@code LoadStoreParameter} that specifies how to store
* this {@code KeyStoreSpi}, maybe {@code null}.
* @throws IOException
* if a problem occurred while writing to the stream.
* @throws NoSuchAlgorithmException
* if the required algorithm is not available.
* @throws CertificateException
* if the an exception occurred while storing the certificates
* of this code {@code KeyStoreSpi}.
* @throws IllegalArgumentException
* if the given {@link KeyStore.LoadStoreParameter} is not
* recognized.
* @since Android 1.0
*/
public void engineStore(KeyStore.LoadStoreParameter param)
throws IOException, NoSuchAlgorithmException, CertificateException {
throw new UnsupportedOperationException(Messages.getString("security.33")); //$NON-NLS-1$
}
/**
* Loads this {@code KeyStoreSpi} from the given {@code InputStream}.
* Utilizes the given password to verify the stored data.
*
* @param stream
* the {@code InputStream} to load this {@code KeyStoreSpi}'s
* data from.
* @param password
* the password to verify the stored data, maybe {@code null}.
* @throws IOException
* if a problem occurred while reading from the stream.
* @throws NoSuchAlgorithmException
* if the required algorithm is not available.
* @throws CertificateException
* if the an exception occurred while loading the certificates
* of this code {@code KeyStoreSpi}.
* @since Android 1.0
*/
public abstract void engineLoad(InputStream stream, char[] password)
throws IOException, NoSuchAlgorithmException, CertificateException;
/**
* Loads this {@code KeyStoreSpi} using the specified {@code
* LoadStoreParameter}.
*
* @param param
* the {@code LoadStoreParameter} that specifies how to load this
* {@code KeyStoreSpi}, maybe {@code null}.
* @throws IOException
* if a problem occurred while reading from the stream.
* @throws NoSuchAlgorithmException
* if the required algorithm is not available.
* @throws CertificateException
* if the an exception occurred while loading the certificates
* of this code {@code KeyStoreSpi}.
* @throws IllegalArgumentException
* if the given {@link KeyStore.LoadStoreParameter} is not
* recognized.
* @since Android 1.0
*/
public void engineLoad(KeyStore.LoadStoreParameter param)
throws IOException, NoSuchAlgorithmException, CertificateException {
if (param == null) {
engineLoad(null, null);
return;
}
char[] pwd;
KeyStore.ProtectionParameter pp = param.getProtectionParameter();
if (pp instanceof KeyStore.PasswordProtection) {
try {
pwd = ((KeyStore.PasswordProtection) pp).getPassword();
engineLoad(null, pwd);
return;
} catch (IllegalStateException e) {
throw new IllegalArgumentException(e);
}
}
if (pp instanceof KeyStore.CallbackHandlerProtection) {
try {
pwd = getPasswordFromCallBack(pp);
engineLoad(null, pwd);
return;
} catch (UnrecoverableEntryException e) {
throw new IllegalArgumentException(e);
}
}
throw new UnsupportedOperationException(
Messages.getString("security.35")); //$NON-NLS-1$
}
/**
* Returns the {@code Entry} with the given alias, using the specified
* {@code ProtectionParameter}.
*
* @param alias
* the alias of the requested entry.
* @param protParam
* the {@code ProtectionParameter}, used to protect the requested
* entry, maybe {@code null}.
* @return he {@code Entry} with the given alias, using the specified
* {@code ProtectionParameter}.
* @throws NoSuchAlgorithmException
* if the required algorithm is not available.
* @throws UnrecoverableEntryException
* if the entry can not be recovered.
* @throws KeyStoreException
* if this operation fails
* @since Android 1.0
*/
public KeyStore.Entry engineGetEntry(String alias,
KeyStore.ProtectionParameter protParam) throws KeyStoreException,
NoSuchAlgorithmException, UnrecoverableEntryException {
if (!engineContainsAlias(alias)) {
return null;
}
if (engineIsCertificateEntry(alias)) {
return new KeyStore.TrustedCertificateEntry(
engineGetCertificate(alias));
}
char[] passW = null;
if (protParam != null) {
if (protParam instanceof KeyStore.PasswordProtection) {
try {
passW = ((KeyStore.PasswordProtection) protParam)
.getPassword();
} catch (IllegalStateException ee) {
throw new KeyStoreException(Messages.getString("security.36"), ee); //$NON-NLS-1$
}
} else if (protParam instanceof KeyStore.CallbackHandlerProtection) {
passW = getPasswordFromCallBack(protParam);
} else {
throw new UnrecoverableEntryException(
Messages.getString("security.37", //$NON-NLS-1$
protParam.toString()));
}
}
if (engineIsKeyEntry(alias)) {
try {
Key key = engineGetKey(alias, passW);
if (key instanceof PrivateKey) {
return new KeyStore.PrivateKeyEntry((PrivateKey) key,
engineGetCertificateChain(alias));
}
if (key instanceof SecretKey) {
return new KeyStore.SecretKeyEntry((SecretKey) key);
}
} catch (UnrecoverableKeyException e) {
throw new KeyStoreException(e);
}
}
throw new NoSuchAlgorithmException(Messages.getString("security.38")); //$NON-NLS-1$
}
/**
* Stores the given {@code Entry} in this {@code KeyStoreSpi} and associates
* the entry with the given {@code alias}. The entry is protected by the
* specified {@code ProtectionParameter}.
* <p>
* If the specified alias already exists, it will be reassigned.
* </p>
*
* @param alias
* the alias for the entry.
* @param entry
* the entry to store.
* @param protParam
* the {@code ProtectionParameter} to protect the entry.
* @throws KeyStoreException
* if this operation fails.
* @since Android 1.0
*/
public void engineSetEntry(String alias, KeyStore.Entry entry,
KeyStore.ProtectionParameter protParam) throws KeyStoreException {
if (entry == null) {
throw new KeyStoreException(Messages.getString("security.39")); //$NON-NLS-1$
}
if (engineContainsAlias(alias)) {
engineDeleteEntry(alias);
}
if (entry instanceof KeyStore.TrustedCertificateEntry) {
KeyStore.TrustedCertificateEntry trE = (KeyStore.TrustedCertificateEntry) entry;
engineSetCertificateEntry(alias, trE.getTrustedCertificate());
return;
}
char[] passW = null;
if (protParam instanceof KeyStore.PasswordProtection) {
try {
passW = ((KeyStore.PasswordProtection) protParam).getPassword();
} catch (IllegalStateException ee) {
throw new KeyStoreException(Messages.getString("security.36"), ee); //$NON-NLS-1$
}
} else {
if (protParam instanceof KeyStore.CallbackHandlerProtection) {
try {
passW = getPasswordFromCallBack(protParam);
} catch (Exception e) {
throw new KeyStoreException(e);
}
} else {
throw new KeyStoreException(
Messages.getString("security.3A")); //$NON-NLS-1$
}
}
if (entry instanceof KeyStore.PrivateKeyEntry) {
KeyStore.PrivateKeyEntry prE = (KeyStore.PrivateKeyEntry) entry;
engineSetKeyEntry(alias, prE.getPrivateKey(), passW, prE
.getCertificateChain());
return;
}
if (entry instanceof KeyStore.SecretKeyEntry) {
KeyStore.SecretKeyEntry skE = (KeyStore.SecretKeyEntry) entry;
engineSetKeyEntry(alias, skE.getSecretKey(), passW, null);
// engineSetKeyEntry(alias, skE.getSecretKey().getEncoded(), null);
return;
}
throw new KeyStoreException(
Messages.getString("security.3B", entry.toString())); //$NON-NLS-1$
}
/**
* Indicates whether the entry for the given alias is assignable to the
* provided {@code Class}.
*
* @param alias
* the alias for the entry.
* @param entryClass
* the type of the entry.
* @return {@code true} if the {@code Entry} for the alias is assignable to
* the specified {@code entryClass}.
* @since Android 1.0
*/
public boolean engineEntryInstanceOf(String alias,
Class<? extends KeyStore.Entry> entryClass) {
if (!engineContainsAlias(alias)) {
return false;
}
try {
if (engineIsCertificateEntry(alias)) {
return entryClass
.isAssignableFrom(Class
.forName("java.security.KeyStore$TrustedCertificateEntry")); //$NON-NLS-1$
}
if (engineIsKeyEntry(alias)) {
if (entryClass.isAssignableFrom(Class
.forName("java.security.KeyStore$PrivateKeyEntry"))) { //$NON-NLS-1$
return engineGetCertificate(alias) != null;
}
if (entryClass.isAssignableFrom(Class
.forName("java.security.KeyStore$SecretKeyEntry"))) { //$NON-NLS-1$
return engineGetCertificate(alias) == null;
}
}
} catch (ClassNotFoundException ignore) {}
return false;
}
/*
* This method returns password which is encapsulated in
* CallbackHandlerProtection object If there is no implementation of
* CallbackHandler then this method returns null
*/
static char[] getPasswordFromCallBack(KeyStore.ProtectionParameter protParam)
throws UnrecoverableEntryException {
if (protParam == null) {
return null;
}
if (!(protParam instanceof KeyStore.CallbackHandlerProtection)) {
throw new UnrecoverableEntryException(
Messages.getString("security.3C")); //$NON-NLS-1$
}
String clName = Security
.getProperty("auth.login.defaultCallbackHandler"); //$NON-NLS-1$
if (clName == null) {
throw new UnrecoverableEntryException(
Messages.getString("security.3D")); //$NON-NLS-1$
}
try {
Class<?> cl = Class.forName(clName);
CallbackHandler cbHand = (CallbackHandler) cl.newInstance();
PasswordCallback[] pwCb = { new PasswordCallback("password: ", true) }; //$NON-NLS-1$
cbHand.handle(pwCb);
return pwCb[0].getPassword();
} catch (Exception e) {
throw new UnrecoverableEntryException(e.toString());
}
}
}
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