If the given alias name identifies an entry * created by a call to {@code setCertificateEntry}, * or created by a call to {@code setEntry} with a * {@code TrustedCertificateEntry}, * then the trusted certificate contained in that entry is returned. * *
If the given alias name identifies an entry * created by a call to {@code setKeyEntry}, * or created by a call to {@code setEntry} with a * {@code PrivateKeyEntry}, * then the first element of the certificate chain in that entry * (if a chain exists) is returned. * * @param alias the alias name * * @return the certificate, or null if the given alias does not exist or * does not contain a certificate. */ public abstract Certificate engineGetCertificate(String alias); /** * Returns the creation date of the entry identified by the given alias. * * @param alias the alias name * * @return the creation date of this entry, or null if the given alias does * not exist */ public abstract Date engineGetCreationDate(String alias); /** * Assigns the given key to the given alias, protecting it with the given * password. * *
If the given key is of type {@code java.security.PrivateKey}, * it must be accompanied by a certificate chain certifying the * corresponding public key. * *
If the given alias already exists, the keystore information * associated with it is overridden by the given key (and possibly * certificate chain). * * @param alias the alias name * @param key the key to be associated with the alias * @param password the password to protect the key * @param chain the certificate chain for the corresponding public * key (only required if the given key is of type * {@code java.security.PrivateKey}). * * @exception KeyStoreException if the given key cannot be protected, or * this operation fails for some other reason */ public abstract void engineSetKeyEntry(String alias, Key key, char[] password, Certificate[] chain) throws KeyStoreException; /** * Assigns the given key (that has already been protected) to the given * alias. * *
If the protected key is of type * {@code java.security.PrivateKey}, * it must be accompanied by a certificate chain certifying the * corresponding public key. * *
If the given alias already exists, the keystore information * associated with it is overridden by the given key (and possibly * certificate chain). * * @param alias the alias name * @param key the key (in protected format) to be associated with the alias * @param chain the certificate chain for the corresponding public * key (only useful if the protected key is of type * {@code java.security.PrivateKey}). * * @exception KeyStoreException if this operation fails. */ public abstract void engineSetKeyEntry(String alias, byte[] key, Certificate[] chain) throws KeyStoreException; /** * Assigns the given certificate to the given alias. * *
If the given alias identifies an existing entry
* created by a call to {@code setCertificateEntry},
* or created by a call to {@code setEntry} with a
* {@code TrustedCertificateEntry},
* the trusted certificate in the existing entry
* is overridden by the given certificate.
*
* @param alias the alias name
* @param cert the certificate
*
* @exception KeyStoreException if the given alias already exists and does
* not identify an entry containing a trusted certificate,
* or this operation fails for some other reason.
*/
public abstract void engineSetCertificateEntry(String alias,
Certificate cert)
throws KeyStoreException;
/**
* Deletes the entry identified by the given alias from this keystore.
*
* @param alias the alias name
*
* @exception KeyStoreException if the entry cannot be removed.
*/
public abstract void engineDeleteEntry(String alias)
throws KeyStoreException;
/**
* Lists all the alias names of this keystore.
*
* @return enumeration of the alias names
*/
public abstract Enumeration This method attempts to match the given certificate with each
* keystore entry. If the entry being considered was
* created by a call to {@code setCertificateEntry},
* or created by a call to {@code setEntry} with a
* {@code TrustedCertificateEntry},
* then the given certificate is compared to that entry's certificate.
*
* If the entry being considered was
* created by a call to {@code setKeyEntry},
* or created by a call to {@code setEntry} with a
* {@code PrivateKeyEntry},
* then the given certificate is compared to the first
* element of that entry's certificate chain.
*
* @param cert the certificate to match with.
*
* @return the alias name of the first entry with matching certificate,
* or null if no such entry exists in this keystore.
*/
public abstract String engineGetCertificateAlias(Certificate cert);
/**
* Stores this keystore to the given output stream, and protects its
* integrity with the given password.
*
* @param stream the output stream to which this keystore is written.
* @param password the password to generate the keystore integrity check
*
* @exception IOException if there was an I/O problem with data
* @exception NoSuchAlgorithmException if the appropriate data integrity
* algorithm could not be found
* @exception CertificateException if any of the certificates included in
* the keystore data could not be stored
*/
public abstract void engineStore(OutputStream stream, char[] password)
throws IOException, NoSuchAlgorithmException, CertificateException;
/**
* Stores this keystore using the given
* {@code KeyStore.LoadStoreParmeter}.
*
* @param param the {@code KeyStore.LoadStoreParmeter}
* that specifies how to store the keystore,
* which may be {@code null}
*
* @exception IllegalArgumentException if the given
* {@code KeyStore.LoadStoreParmeter}
* input is not recognized
* @exception IOException if there was an I/O problem with data
* @exception NoSuchAlgorithmException if the appropriate data integrity
* algorithm could not be found
* @exception CertificateException if any of the certificates included in
* the keystore data could not be stored
*
* @since 1.5
*/
public void engineStore(KeyStore.LoadStoreParameter param)
throws IOException, NoSuchAlgorithmException,
CertificateException {
throw new UnsupportedOperationException();
}
/**
* Loads the keystore from the given input stream.
*
* A password may be given to unlock the keystore
* (e.g. the keystore resides on a hardware token device),
* or to check the integrity of the keystore data.
* If a password is not given for integrity checking,
* then integrity checking is not performed.
*
* @param stream the input stream from which the keystore is loaded,
* or {@code null}
* @param password the password used to check the integrity of
* the keystore, the password used to unlock the keystore,
* or {@code null}
*
* @exception IOException if there is an I/O or format problem with the
* keystore data, if a password is required but not given,
* or if the given password was incorrect. If the error is due to a
* wrong password, the {@link Throwable#getCause cause} of the
* {@code IOException} should be an
* {@code UnrecoverableKeyException}
* @exception NoSuchAlgorithmException if the algorithm used to check
* the integrity of the keystore cannot be found
* @exception CertificateException if any of the certificates in the
* keystore could not be loaded
*/
public abstract void engineLoad(InputStream stream, char[] password)
throws IOException, NoSuchAlgorithmException, CertificateException;
/**
* Loads the keystore using the given
* {@code KeyStore.LoadStoreParameter}.
*
* Note that if this KeyStore has already been loaded, it is
* reinitialized and loaded again from the given parameter.
*
* @param param the {@code KeyStore.LoadStoreParameter}
* that specifies how to load the keystore,
* which may be {@code null}
*
* @exception IllegalArgumentException if the given
* {@code KeyStore.LoadStoreParameter}
* input is not recognized
* @exception IOException if there is an I/O or format problem with the
* keystore data. If the error is due to an incorrect
* {@code ProtectionParameter} (e.g. wrong password)
* the {@link Throwable#getCause cause} of the
* {@code IOException} should be an
* {@code UnrecoverableKeyException}
* @exception NoSuchAlgorithmException if the algorithm used to check
* the integrity of the keystore cannot be found
* @exception CertificateException if any of the certificates in the
* keystore could not be loaded
*
* @since 1.5
*/
public void engineLoad(KeyStore.LoadStoreParameter param)
throws IOException, NoSuchAlgorithmException,
CertificateException {
engineLoad(null, param);
}
void engineLoad(InputStream stream, KeyStore.LoadStoreParameter param)
throws IOException, NoSuchAlgorithmException,
CertificateException {
if (param == null) {
engineLoad((InputStream)null, (char[])null);
return;
}
if (param instanceof KeyStore.SimpleLoadStoreParameter) {
ProtectionParameter protection = param.getProtectionParameter();
char[] password;
if (protection instanceof PasswordProtection) {
password = ((PasswordProtection)protection).getPassword();
} else if (protection instanceof CallbackHandlerProtection) {
CallbackHandler handler =
((CallbackHandlerProtection)protection).getCallbackHandler();
PasswordCallback callback =
new PasswordCallback("Password: ", false);
try {
handler.handle(new Callback[] {callback});
} catch (UnsupportedCallbackException e) {
throw new NoSuchAlgorithmException
("Could not obtain password", e);
}
password = callback.getPassword();
callback.clearPassword();
if (password == null) {
throw new NoSuchAlgorithmException
("No password provided");
}
} else {
throw new NoSuchAlgorithmException("ProtectionParameter must"
+ " be PasswordProtection or CallbackHandlerProtection");
}
engineLoad(null, password);
return;
}
throw new UnsupportedOperationException();
}
/**
* Gets a {@code KeyStore.Entry} for the specified alias
* with the specified protection parameter.
*
* @param alias get the {@code KeyStore.Entry} for this alias
* @param protParam the {@code ProtectionParameter}
* used to protect the {@code Entry},
* which may be {@code null}
*
* @return the {@code KeyStore.Entry} for the specified alias,
* or {@code null} if there is no such entry
*
* @exception KeyStoreException if the operation failed
* @exception NoSuchAlgorithmException if the algorithm for recovering the
* entry cannot be found
* @exception UnrecoverableEntryException if the specified
* {@code protParam} were insufficient or invalid
* @exception UnrecoverableKeyException if the entry is a
* {@code PrivateKeyEntry} or {@code SecretKeyEntry}
* and the specified {@code protParam} does not contain
* the information needed to recover the key (e.g. wrong password)
*
* @since 1.5
*/
public KeyStore.Entry engineGetEntry(String alias,
KeyStore.ProtectionParameter protParam)
throws KeyStoreException, NoSuchAlgorithmException,
UnrecoverableEntryException {
// Android-changed: add null check previously always done here inside engineContainsAlias
// if (!engineContainsAlias(alias)) {
if (alias == null) {
return null;
}
// BEGIN Android-added: Figure out the type of entry once
// To avoid many redundant calls that for some providers like
// AndroidKeyStoreSpi are costly since it performs
// binder transactions everytime we call engineIsKeyEntry or
// engineContainsAlias methods and rely on the knowledge
// that the only two types of entries are keys or certificates.
boolean isCertificateEntry;
if (!engineIsKeyEntry(alias)){
if (!engineContainsAlias(alias)) {
return null;
}
// If it is not a key then it has to be a certificate
isCertificateEntry = true;
} else {
isCertificateEntry = false;
}
// END Android-added: Figure out the type of entry once
if (protParam == null) {
// Android-changed: Use cached value
// if (engineIsCertificateEntry(alias)) {
if (isCertificateEntry) {
return new KeyStore.TrustedCertificateEntry
(engineGetCertificate(alias));
// Android-removed: Allow access to entries with no password.
// } else {
// throw new UnrecoverableKeyException
// ("requested entry requires a password");
}
}
// Android-changed: Add protParam == null to allow access to entries with no password.
if ((protParam == null) || protParam instanceof KeyStore.PasswordProtection) {
if (isCertificateEntry) {
throw new UnsupportedOperationException
("trusted certificate entries are not password-protected");
// Android-changed: avoid redundant check
// else if (engineIsKeyEntry(alias)) {
} else {
// Android-changed: Allow access to entries with no password.
// KeyStore.PasswordProtection pp =
// (KeyStore.PasswordProtection)protParam;
// char[] password = pp.getPassword();
char[] password = null;
if (protParam != null) {
KeyStore.PasswordProtection pp =
(KeyStore.PasswordProtection)protParam;
password = pp.getPassword();
}
Key key = engineGetKey(alias, password);
if (key instanceof PrivateKey) {
Certificate[] chain = engineGetCertificateChain(alias);
return new KeyStore.PrivateKeyEntry((PrivateKey)key, chain);
} else if (key instanceof SecretKey) {
return new KeyStore.SecretKeyEntry((SecretKey)key);
}
}
}
throw new UnsupportedOperationException();
}
/**
* Saves a {@code KeyStore.Entry} under the specified alias.
* The specified protection parameter is used to protect the
* {@code Entry}.
*
* If an entry already exists for the specified alias,
* it is overridden.
*
* @param alias save the {@code KeyStore.Entry} under this alias
* @param entry the {@code Entry} to save
* @param protParam the {@code ProtectionParameter}
* used to protect the {@code Entry},
* which may be {@code null}
*
* @exception KeyStoreException if this operation fails
*
* @since 1.5
*/
public void engineSetEntry(String alias, KeyStore.Entry entry,
KeyStore.ProtectionParameter protParam)
throws KeyStoreException {
// get password
if (protParam != null &&
!(protParam instanceof KeyStore.PasswordProtection)) {
throw new KeyStoreException("unsupported protection parameter");
}
KeyStore.PasswordProtection pProtect = null;
if (protParam != null) {
pProtect = (KeyStore.PasswordProtection)protParam;
}
// BEGIN Android-changed: Allow access to entries with no password.
char[] password = (pProtect == null) ? null : pProtect.getPassword();
// set entry
if (entry instanceof KeyStore.TrustedCertificateEntry) {
KeyStore.TrustedCertificateEntry tce =
(KeyStore.TrustedCertificateEntry)entry;
engineSetCertificateEntry(alias, tce.getTrustedCertificate());
return;
} else if (entry instanceof KeyStore.PrivateKeyEntry) {
engineSetKeyEntry
(alias,
((KeyStore.PrivateKeyEntry)entry).getPrivateKey(),
password,
((KeyStore.PrivateKeyEntry)entry).getCertificateChain());
return;
} else if (entry instanceof KeyStore.SecretKeyEntry) {
engineSetKeyEntry
(alias,
((KeyStore.SecretKeyEntry)entry).getSecretKey(),
password,
(Certificate[])null);
return;
}
// END Android-changed: Allow access to entries with no password.
throw new KeyStoreException
("unsupported entry type: " + entry.getClass().getName());
}
/**
* Determines if the keystore {@code Entry} for the specified
* {@code alias} is an instance or subclass of the specified
* {@code entryClass}.
*
* @param alias the alias name
* @param entryClass the entry class
*
* @return true if the keystore {@code Entry} for the specified
* {@code alias} is an instance or subclass of the
* specified {@code entryClass}, false otherwise
*
* @since 1.5
*/
public boolean
engineEntryInstanceOf(String alias,
Class entryClass)
{
if (entryClass == KeyStore.TrustedCertificateEntry.class) {
return engineIsCertificateEntry(alias);
}
if (entryClass == KeyStore.PrivateKeyEntry.class) {
return engineIsKeyEntry(alias) &&
engineGetCertificate(alias) != null;
}
if (entryClass == KeyStore.SecretKeyEntry.class) {
return engineIsKeyEntry(alias) &&
engineGetCertificate(alias) == null;
}
return false;
}
/**
* Probes the specified input stream to determine whether it contains a
* keystore that is supported by this implementation, or not.
*
* @implSpec
* This method returns false by default. Keystore implementations should
* override this method to peek at the data stream directly or to use other
* content detection mechanisms.
*
* @param stream the keystore data to be probed
*
* @return true if the keystore data is supported, otherwise false
*
* @throws IOException if there is an I/O problem with the keystore data.
* @throws NullPointerException if stream is {@code null}.
*
* @since 9
*/
public boolean engineProbe(InputStream stream) throws IOException {
if (stream == null) {
throw new NullPointerException("input stream must not be null");
}
return false;
}
}