java.security
Class KeyStoreSpi

java.lang.Object
  java.security.KeyStoreSpi

public abstract class KeyStoreSpi

extends Object

This class defines the Service Provider Interface ( SPI ) for the KeyStore class. All the abstract methods in this class must be implemented by each cryptographic service provider who wishes to supply the implementation of a keystore for a particular keystore type.

Since:

1.2

See Also:

KeyStore

Constructor Summary
KeyStoreSpi ()

 

Method Summary
abstract   Enumeration	engineAliases ()           Lists all the alias names of this keystore.
abstract  boolean	engineContainsAlias ( String  alias)           Checks if the given alias exists in this keystore.
abstract  void	engineDeleteEntry ( String  alias)           Deletes the entry identified by the given alias from this keystore.
boolean	engineEntryInstanceOf ( String  alias, Class           Determines if the keystore Entry for the specified alias is an instance or subclass of the specified entryClass.
abstract   Certificate	engineGetCertificate ( String  alias)           Returns the certificate associated with the given alias.
abstract   String	engineGetCertificateAlias ( Certificate  cert)           Returns the (alias) name of the first keystore entry whose certificate matches the given certificate.
abstract   Certificate []	engineGetCertificateChain ( String  alias)           Returns the certificate chain associated with the given alias.
abstract   Date	engineGetCreationDate ( String  alias)           Returns the creation date of the entry identified by the given alias.
KeyStore.Entry	engineGetEntry ( String  alias, KeyStore.ProtectionParameter           Gets a KeyStore.Entry for the specified alias with the specified protection parameter.
abstract   Key	engineGetKey ( String  alias, char[] password)           Returns the key associated with the given alias, using the given password to recover it.
abstract  boolean	engineIsCertificateEntry ( String           Returns true if the entry identified by the given alias was created by is a call to setCertificateEntry, or created by a call to setEntry with a TrustedCertificateEntry. trusted certificate entry , and false otherwise.
abstract  boolean	engineIsKeyEntry ( String           Returns true if the entry identified by the given alias was created by is a call to setKeyEntry, or created by a call to setEntry with a PrivateKeyEntry or a SecretKeyEntry. key entry , and false otherwise.
abstract  void	engineLoad ( InputStream  stream, char[] password)           Loads the keystore from the given input stream.
void	engineLoad ( KeyStore.LoadStoreParameter           Loads the keystore using the given KeyStore.LoadStoreParameter.
abstract  void	engineSetCertificateEntry ( String  alias, Certificate  cert)           Assigns the given certificate to the given alias.
void	engineSetEntry ( String  alias, KeyStore.Entry  entry, KeyStore.ProtectionParameter           Saves a KeyStore.Entry under the specified alias.
abstract  void	engineSetKeyEntry ( String  alias, byte[] key, Certificate [] chain)           Assigns the given key (that has already been protected) to the given alias.
abstract  void	engineSetKeyEntry ( String  alias, Key  key, char[] password, Certificate [] chain)           Assigns the given key to the given alias, protecting it with the given password.
abstract  int	engineSize ()           Retrieves the number of entries in this keystore.
void	engineStore ( KeyStore.LoadStoreParameter           Stores this keystore using the given KeyStore.LoadStoreParmeter.
abstract  void	engineStore ( OutputStream  stream, char[] password)           Stores this keystore to the given output stream, and protects its integrity with the given password.

 

Methods inherited from class java.lang. Object
clone , equals , finalize , getClass , hashCode , notify , notifyAll , toString , wait , wait , wait

 

Constructor Detail

KeyStoreSpi

public KeyStoreSpi()

engineGetKey

public abstract Key engineGetKey(String alias,
                                 char[] password)
                          throws NoSuchAlgorithmException,
                                 UnrecoverableKeyException

Returns the key associated with the given alias, using the given password to recover it. The key must have been associated with the alias by a call to setKeyEntry, or by a call to setEntry with a PrivateKeyEntry or SecretKeyEntry.

Parameters:

alias - the alias name

password - the password for recovering the key

Returns:

the requested key, or null if the given alias does not exist or does not identify a key-related entry. key entry .

Throws:

NoSuchAlgorithmException - if the algorithm for recovering the key cannot be found

UnrecoverableKeyException - if the key cannot be recovered (e.g., the given password is wrong).

engineGetCertificateChain

public abstract Certificate[] engineGetCertificateChain(String alias)

Returns the certificate chain associated with the given alias. The certificate chain must have been associated with the alias by a call to setKeyEntry, or by a call to setEntry with a PrivateKeyEntry.

Parameters:

alias - the alias name

Returns:

the certificate chain (ordered with the user's certificate first and the root certificate authority last), or null if the given alias does not exist or does not contain a certificate chain (i.e., the given alias identifies either a trusted certificate entry or a key entry without a certificate chain).

engineGetCertificate

public abstract Certificate engineGetCertificate(String alias)

Returns the certificate associated with the given alias.

If the given alias name identifies an entry created by a call to setCertificateEntry, or created by a call to setEntry with a TrustedCertificateEntry, then the trusted certificate contained in that entry is returned. If the given alias name identifies a trusted certificate entry , the certificate associated with that entry is returned. If the given alias name identifies a key entry , the first element of the certificate chain of that entry is returned, or null if that entry does not have a certificate chain.

If the given alias name identifies an entry created by a call to setKeyEntry, or created by a call to setEntry with a PrivateKeyEntry, then the first element of the certificate chain in that entry (if a chain exists) is returned.

Parameters:

alias - the alias name

Returns:

the certificate, or null if the given alias does not exist or does not contain a certificate.

engineGetCreationDate

public abstract Date engineGetCreationDate(String alias)

Returns the creation date of the entry identified by the given alias.

Parameters:

alias - the alias name

Returns:

the creation date of this entry, or null if the given alias does not exist

engineSetKeyEntry

public abstract void engineSetKeyEntry(String alias,
                                       Key key,
                                       char[] password,
                                       Certificate[] chain)
                                throws KeyStoreException

Assigns the given key to the given alias, protecting it with the given password.

If the given key is of type 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).

Parameters:

alias - the alias name

key - the key to be associated with the alias

password - the password to protect the key

chain - the certificate chain for the corresponding public key (only required if the given key is of type java.security.PrivateKey).

Throws:

KeyStoreException - if the given key cannot be protected, or this operation fails for some other reason

engineSetKeyEntry

public abstract void engineSetKeyEntry(String alias,
                                       byte[] key,
                                       Certificate[] chain)
                                throws KeyStoreException

Assigns the given key (that has already been protected) to the given alias.

If the protected key is of type 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).

Parameters:

alias - the alias name

key - the key (in protected format) to be associated with the alias

chain - the certificate chain for the corresponding public key (only useful if the protected key is of type java.security.PrivateKey).

Throws:

KeyStoreException - if this operation fails.

engineSetCertificateEntry

public abstract void engineSetCertificateEntry(String alias,
                                               Certificate cert)
                                        throws KeyStoreException

Assigns the given certificate to the given alias.

If the given alias identifies an existing entry created by a call to setCertificateEntry, or created by a call to setEntry with a TrustedCertificateEntry, the trusted certificate in the existing entry is overridden by the given certificate. If the given alias already exists in this keystore and identifies a trusted certificate entry , the certificate associated with it is overridden by the given certificate.

Parameters:

alias - the alias name

cert - the certificate

Throws:

KeyStoreException - if the given alias already exists and does not identify an entry containing a trusted certificate, certificate entry , or this operation fails for some other reason.

engineDeleteEntry

public abstract void engineDeleteEntry(String alias)
                                throws KeyStoreException

Deletes the entry identified by the given alias from this keystore.

Parameters:

alias - the alias name

Throws:

KeyStoreException - if the entry cannot be removed.

engineAliases

public abstract Enumeration engineAliases()

Lists all the alias names of this keystore.

Returns:

enumeration of the alias names

engineContainsAlias

public abstract boolean engineContainsAlias(String alias)

Checks if the given alias exists in this keystore.

Parameters:

alias - the alias name

Returns:

true if the alias exists, false otherwise

engineSize

public abstract int engineSize()

Retrieves the number of entries in this keystore.

Returns:

the number of entries in this keystore

engineIsKeyEntry

public abstract boolean engineIsKeyEntry(String alias)

Returns true if the entry identified by the given alias was created by a call to setKeyEntry, or created by a call to setEntry with a PrivateKeyEntry or a SecretKeyEntry. Returns true if the entry identified by the given alias is a key entry , and false otherwise.

Parameters:

alias - the alias for the keystore entry to be checked

Returns:

true if the entry identified by the given alias is a key-related, key entry , false otherwise.

engineIsCertificateEntry

public abstract boolean engineIsCertificateEntry(String alias)

Returns true if the entry identified by the given alias was created by a call to setCertificateEntry, or created by a call to setEntry with a TrustedCertificateEntry. Returns true if the entry identified by the given alias is a trusted certificate entry , and false otherwise.

Parameters:

alias - the alias for the keystore entry to be checked

Returns:

true if the entry identified by the given alias contains is a trusted certificate, certificate entry , false otherwise.

engineGetCertificateAlias

public abstract String engineGetCertificateAlias(Certificate cert)

Returns the (alias) name of the first keystore entry whose certificate matches the given certificate.

This method attempts to match the given certificate with each keystore entry. If the entry being considered was created by a call to setCertificateEntry, or created by a call to setEntry with a TrustedCertificateEntry, then the given certificate is compared to that entry's certificate. If the entry being considered is a trusted certificate entry , the given certificate is compared to that entry's certificate. If the entry being considered is a key entry , the given certificate is compared to the first element of that entry's certificate chain (if a chain exists).

If the entry being considered was created by a call to setKeyEntry, or created by a call to setEntry with a PrivateKeyEntry, then the given certificate is compared to the first element of that entry's certificate chain.

Parameters:

cert - the certificate to match with.

Returns:

the alias (alias) name of the first entry with matching certificate, or null if no such entry exists in this keystore.

engineStore

public abstract void engineStore(OutputStream stream,
                                 char[] password)
                          throws IOException,
                                 NoSuchAlgorithmException,
                                 CertificateException

Stores this keystore to the given output stream, and protects its integrity with the given password.

Parameters:

stream - the output stream to which this keystore is written.

password - the password to generate the keystore integrity check

Throws:

IOException - if there was an I/O problem with data

NoSuchAlgorithmException - if the appropriate data integrity algorithm could not be found

CertificateException - if any of the certificates included in the keystore data could not be stored

engineStore

 
public void engineStore ( KeyStore.LoadStoreParameter param)
 throws IOException,
 NoSuchAlgorithmException,
 CertificateException

Stores this keystore using the given KeyStore.LoadStoreParmeter.

Parameters:

param - the KeyStore.LoadStoreParmeter that specifies how to store the keystore, which may be null

Throws:

IllegalArgumentException - if the given KeyStore.LoadStoreParmeter input is not recognized

IOException - if there was an I/O problem with data

NoSuchAlgorithmException - if the appropriate data integrity algorithm could not be found

CertificateException - if any of the certificates included in the keystore data could not be stored

engineLoad

public abstract void engineLoad(InputStream stream,
                                char[] password)
                         throws IOException,
                                NoSuchAlgorithmException,
                                CertificateException

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. If a password is given, it is used to check the integrity of the keystore data. Otherwise, the integrity of the keystore is not checked.

Parameters:

stream - the input stream from which the keystore is loaded, or null loaded

password - the (optional) password used to check the integrity of the keystore, the password used to unlock the keystore, or null keystore.

Throws:

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 data

NoSuchAlgorithmException - if the algorithm used to check the integrity of the keystore cannot be found

CertificateException - if any of the certificates in the keystore could not be loaded

engineLoad

 
public void engineLoad ( KeyStore.LoadStoreParameter param)
 throws IOException,
 NoSuchAlgorithmException,
 CertificateException

Loads the keystore using the given KeyStore.LoadStoreParameter.

Note that if this KeyStore has already been loaded, it is reinitialized and loaded again from the given parameter.

Parameters:

param - the KeyStore.LoadStoreParameter that specifies how to load the keystore, which may be null

Throws:

IllegalArgumentException - if the given KeyStore.LoadStoreParameter input is not recognized

IOException - if there is an I/O or format problem with the keystore data

NoSuchAlgorithmException - if the algorithm used to check the integrity of the keystore cannot be found

CertificateException - if any of the certificates in the keystore could not be loaded

engineGetEntry

 
public KeyStore.EntryengineGetEntry ( String alias,
 KeyStore.ProtectionParameter protParam)
 throws KeyStoreException,
 NoSuchAlgorithmException,
 UnrecoverableEntryException

Gets a KeyStore.Entry for the specified alias with the specified protection parameter.

Parameters:

alias - get the KeyStore.Entry for this alias

protParam - the ProtectionParameter used to protect the Entry, which may be null

Returns:

the KeyStore.Entry for the specified alias, or null if there is no such entry

Throws:

KeyStoreException - if the operation failed

NoSuchAlgorithmException - if the algorithm for recovering the entry cannot be found

UnrecoverableEntryException - if the specified protParam were insufficient or invalid

Since:

1.5

engineSetEntry

 
public void engineSetEntry ( String alias,
 KeyStore.Entry entry,
 KeyStore.ProtectionParameter protParam)
 throws KeyStoreException

Saves a KeyStore.Entry under the specified alias. The specified protection parameter is used to protect the Entry.

If an entry already exists for the specified alias, it is overridden.

Parameters:

alias - save the KeyStore.Entry under this alias

entry - the Entry to save

protParam - the ProtectionParameter used to protect the Entry, which may be null

Throws:

KeyStoreException - if this operation fails

Since:

1.5

engineEntryInstanceOf

 
public boolean engineEntryInstanceOf ( String alias,
 Class entryClass) 

Determines if the keystore Entry for the specified alias is an instance or subclass of the specified entryClass.

Parameters:

alias - the alias name

entryClass - the entry class

Returns:

true if the keystore Entry for the specified alias is an instance or subclass of the specified entryClass, false otherwise