KeyStore
public
class
KeyStore
extends Object
java.lang.Object | |
↳ | java.security.KeyStore |
This class represents a storage facility for cryptographic keys and certificates.
A KeyStore
manages different types of entries.
Each type of entry implements the KeyStore.Entry
interface.
Three basic KeyStore.Entry
implementations are provided:
- KeyStore.PrivateKeyEntry
This type of entry holds a cryptographic
PrivateKey
, which is optionally stored in a protected format to prevent unauthorized access. It is also accompanied by a certificate chain for the corresponding public key.Private keys and certificate chains are used by a given entity for self-authentication. Applications for this authentication include software distribution organizations which sign JAR files as part of releasing and/or licensing software.
- KeyStore.SecretKeyEntry
This type of entry holds a cryptographic
SecretKey
, which is optionally stored in a protected format to prevent unauthorized access. - KeyStore.TrustedCertificateEntry
This type of entry contains a single public key
Certificate
belonging to another party. It is called a trusted certificate because the keystore owner trusts that the public key in the certificate indeed belongs to the identity identified by the subject (owner) of the certificate.This type of entry can be used to authenticate other parties.
Each entry in a keystore is identified by an "alias" string. In the case of private keys and their associated certificate chains, these strings distinguish among the different ways in which the entity may authenticate itself. For example, the entity may authenticate itself using different certificate authorities, or using different public key algorithms.
Whether aliases are case sensitive is implementation dependent. In order to avoid problems, it is recommended not to use aliases in a KeyStore that only differ in case.
Whether keystores are persistent, and the mechanisms used by the keystore if it is persistent, are not specified here. This allows use of a variety of techniques for protecting sensitive (e.g., private or secret) keys. Smart cards or other integrated cryptographic engines (SafeKeyper) are one option, and simpler mechanisms such as files may also be used (in a variety of formats).
Typical ways to request a KeyStore object include specifying an existing keystore file, relying on the default type and providing a specific keystore type.
- To specify an existing keystore file:
The system will probe the specified file to determine its keystore type and return a keystore implementation with its entries already loaded. When this approach is used there is no need to call the keystore's// get keystore password char[] password = getPassword(); // probe the keystore file and load the keystore entries KeyStore ks = KeyStore.getInstance(new File("keyStoreName"), password);
load
method. - To rely on the default type:
The system will return a keystore implementation for the default type.KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType());
- To provide a specific keystore type:
The system will return the most preferred implementation of the specified keystore type available in the environment.KeyStore ks = KeyStore.getInstance("JKS");
Before a keystore can be accessed, it must be
loaded
.
KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType()); // get user password and file input stream char[] password = getPassword(); try (FileInputStream fis = new FileInputStream("keyStoreName")) { ks.load(fis, password); }
load
method,
pass null
as the InputStream
argument.
Once the keystore has been loaded, it is possible to read existing entries from the keystore, or to write new entries into the keystore:
KeyStore.ProtectionParameter protParam = new KeyStore.PasswordProtection(password); // get my private key KeyStore.PrivateKeyEntry pkEntry = (KeyStore.PrivateKeyEntry) ks.getEntry("privateKeyAlias", protParam); PrivateKey myPrivateKey = pkEntry.getPrivateKey(); // save my secret key javax.crypto.SecretKey mySecretKey; KeyStore.SecretKeyEntry skEntry = new KeyStore.SecretKeyEntry(mySecretKey); ks.setEntry("secretKeyAlias", skEntry, protParam); // store away the keystore try (FileOutputStream fos = new FileOutputStream("newKeyStoreName")) { ks.store(fos, password); }
Android provides the following KeyStore
types:
Algorithm | Supported API Levels |
---|---|
AndroidCAStore | 14+ |
AndroidKeyStore | 18+ |
BCPKCS12 | 1-8 |
BKS | 1+ |
BouncyCastle | 1+ |
PKCS12 | 1+ |
PKCS12-DEF | 1-8 |
See also:
Summary
Nested classes | |
---|---|
class |
KeyStore.Builder
A description of a to-be-instantiated KeyStore object. |
class |
KeyStore.CallbackHandlerProtection
A ProtectionParameter encapsulating a CallbackHandler. |
interface |
KeyStore.Entry
A marker interface for |
interface |
KeyStore.LoadStoreParameter
|
class |
KeyStore.PasswordProtection
A password-based implementation of |
class |
KeyStore.PrivateKeyEntry
A |
interface |
KeyStore.ProtectionParameter
A marker interface for keystore protection parameters. |
class |
KeyStore.SecretKeyEntry
A |
class |
KeyStore.TrustedCertificateEntry
A |
Protected constructors | |
---|---|
KeyStore(KeyStoreSpi keyStoreSpi, Provider provider, String type)
Creates a KeyStore object of the given type, and encapsulates the given provider implementation (SPI object) in it. |
Public methods | |
---|---|
final
Enumeration<String>
|
aliases()
Lists all the alias names of this keystore. |
final
boolean
|
containsAlias(String alias)
Checks if the given alias exists in this keystore. |
final
void
|
deleteEntry(String alias)
Deletes the entry identified by the given alias from this keystore. |
final
boolean
|
entryInstanceOf(String alias, Class<? extends KeyStore.Entry> entryClass)
Determines if the keystore |
final
Certificate
|
getCertificate(String alias)
Returns the certificate associated with the given alias. |
final
String
|
getCertificateAlias(Certificate cert)
Returns the (alias) name of the first keystore entry whose certificate matches the given certificate. |
final
Certificate[]
|
getCertificateChain(String alias)
Returns the certificate chain associated with the given alias. |
final
Date
|
getCreationDate(String alias)
Returns the creation date of the entry identified by the given alias. |
static
final
String
|
getDefaultType()
Returns the default keystore type as specified by the
|
final
KeyStore.Entry
|
getEntry(String alias, KeyStore.ProtectionParameter protParam)
Gets a keystore |
static
KeyStore
|
getInstance(String type)
Returns a keystore object of the specified type. |
static
final
KeyStore
|
getInstance(File file, char[] password)
Returns a loaded keystore object of the appropriate keystore type. |
static
KeyStore
|
getInstance(String type, String provider)
Returns a keystore object of the specified type. |
static
KeyStore
|
getInstance(String type, Provider provider)
Returns a keystore object of the specified type. |
static
final
KeyStore
|
getInstance(File file, KeyStore.LoadStoreParameter param)
Returns a loaded keystore object of the appropriate keystore type. |
final
Key
|
getKey(String alias, char[] password)
Returns the key associated with the given alias, using the given password to recover it. |
final
Provider
|
getProvider()
Returns the provider of this keystore. |
final
String
|
getType()
Returns the type of this keystore. |
final
boolean
|
isCertificateEntry(String alias)
Returns true if the entry identified by the given alias
was created by a call to |
final
boolean
|
isKeyEntry(String alias)
Returns true if the entry identified by the given alias
was created by a call to |
final
void
|
load(KeyStore.LoadStoreParameter param)
Loads this keystore using the given |
final
void
|
load(InputStream stream, char[] password)
Loads this KeyStore from the given input stream. |
final
void
|
setCertificateEntry(String alias, Certificate cert)
Assigns the given trusted certificate to the given alias. |
final
void
|
setEntry(String alias, KeyStore.Entry entry, KeyStore.ProtectionParameter protParam)
Saves a keystore |
final
void
|
setKeyEntry(String alias, Key key, char[] password, Certificate[] chain)
Assigns the given key to the given alias, protecting it with the given password. |
final
void
|
setKeyEntry(String alias, byte[] key, Certificate[] chain)
Assigns the given key (that has already been protected) to the given alias. |
final
int
|
size()
Retrieves the number of entries in this keystore. |
final
void
|
store(OutputStream stream, char[] password)
Stores this keystore to the given output stream, and protects its integrity with the given password. |
final
void
|
store(KeyStore.LoadStoreParameter param)
Stores this keystore using the given |
Inherited methods | |||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Protected constructors
KeyStore
protected KeyStore (KeyStoreSpi keyStoreSpi, Provider provider, String type)
Creates a KeyStore object of the given type, and encapsulates the given provider implementation (SPI object) in it.
Parameters | |
---|---|
keyStoreSpi |
KeyStoreSpi : the provider implementation. |
provider |
Provider : the provider. |
type |
String : the keystore type. |
Public methods
aliases
public final Enumeration<String> aliases ()
Lists all the alias names of this keystore.
Returns | |
---|---|
Enumeration<String> |
enumeration of the alias names |
Throws | |
---|---|
KeyStoreException |
if the keystore has not been initialized (loaded). |
containsAlias
public final boolean containsAlias (String alias)
Checks if the given alias exists in this keystore.
Parameters | |
---|---|
alias |
String : the alias name |
Returns | |
---|---|
boolean |
true if the alias exists, false otherwise |
Throws | |
---|---|
KeyStoreException |
if the keystore has not been initialized (loaded). |
deleteEntry
public final void deleteEntry (String alias)
Deletes the entry identified by the given alias from this keystore.
Parameters | |
---|---|
alias |
String : the alias name |
Throws | |
---|---|
KeyStoreException |
if the keystore has not been initialized, or if the entry cannot be removed. |
entryInstanceOf
public final boolean entryInstanceOf (String alias, Class<? extends KeyStore.Entry> entryClass)
Determines if the keystore Entry
for the specified
alias
is an instance or subclass of the specified
entryClass
.
Parameters | |
---|---|
alias |
String : the alias name |
entryClass |
Class : the entry class |
Returns | |
---|---|
boolean |
true if the keystore Entry for the specified
alias is an instance or subclass of the
specified entryClass , false otherwise |
Throws | |
---|---|
NullPointerException |
if
alias or entryClass
is null |
KeyStoreException |
if the keystore has not been initialized (loaded) |
getCertificate
public final Certificate getCertificate (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 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
is returned.
Parameters | |
---|---|
alias |
String : the alias name |
Returns | |
---|---|
Certificate |
the certificate, or null if the given alias does not exist or does not contain a certificate. |
Throws | |
---|---|
KeyStoreException |
if the keystore has not been initialized (loaded). |
getCertificateAlias
public final String getCertificateAlias (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 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 |
Certificate : the certificate to match with. |
Returns | |
---|---|
String |
the alias name of the first entry with a matching certificate, or null if no such entry exists in this keystore. |
Throws | |
---|---|
KeyStoreException |
if the keystore has not been initialized (loaded). |
getCertificateChain
public final Certificate[] getCertificateChain (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 |
String : the alias name |
Returns | |
---|---|
Certificate[] |
the certificate chain (ordered with the user's certificate first followed by zero or more certificate authorities), or null if the given alias does not exist or does not contain a certificate chain |
Throws | |
---|---|
KeyStoreException |
if the keystore has not been initialized (loaded). |
getCreationDate
public final Date getCreationDate (String alias)
Returns the creation date of the entry identified by the given alias.
Parameters | |
---|---|
alias |
String : the alias name |
Returns | |
---|---|
Date |
the creation date of this entry, or null if the given alias does not exist |
Throws | |
---|---|
KeyStoreException |
if the keystore has not been initialized (loaded). |
getDefaultType
public static final String getDefaultType ()
Returns the default keystore type as specified by the
keystore.type
security property, or the string
"jks" (acronym for "Java keystore")
if no such property exists.
The default keystore type can be used by applications that do not
want to use a hard-coded keystore type when calling one of the
getInstance
methods, and want to provide a default keystore
type in case a user does not specify its own.
The default keystore type can be changed by setting the value of the
keystore.type
security property to the desired keystore type.
Returns | |
---|---|
String |
the default keystore type as specified by the
keystore.type security property, or the string "jks"
if no such property exists. |
See also:
getEntry
public final KeyStore.Entry getEntry (String alias, KeyStore.ProtectionParameter protParam)
Gets a keystore Entry
for the specified alias
with the specified protection parameter.
Parameters | |
---|---|
alias |
String : get the keystore Entry for this alias |
protParam |
KeyStore.ProtectionParameter : the ProtectionParameter
used to protect the Entry ,
which may be null |
Returns | |
---|---|
KeyStore.Entry |
the keystore Entry for the specified alias,
or null if there is no such entry |
Throws | |
---|---|
NullPointerException |
if
alias is null |
NoSuchAlgorithmException |
if the algorithm for recovering the entry cannot be found |
UnrecoverableEntryException |
if the specified
protParam were insufficient or invalid |
UnrecoverableKeyException |
if the entry is a
PrivateKeyEntry or SecretKeyEntry
and the specified protParam does not contain
the information needed to recover the key (e.g. wrong password) |
KeyStoreException |
if the keystore has not been initialized (loaded). |
getInstance
public static KeyStore getInstance (String type)
Returns a keystore object of the specified type.
This method traverses the list of registered security Providers, starting with the most preferred Provider. A new KeyStore object encapsulating the KeyStoreSpi implementation from the first Provider that supports the specified type is returned.
Note that the list of registered providers may be retrieved via
the Security.getProviders()
method.
Parameters | |
---|---|
type |
String : the type of keystore.
See the KeyStore section in the
Java Security Standard Algorithm Names Specification
for information about standard keystore types. |
Returns | |
---|---|
KeyStore |
a keystore object of the specified type |
Throws | |
---|---|
KeyStoreException |
if no Provider supports a KeyStoreSpi implementation for the specified type. |
See also:
getInstance
public static final KeyStore getInstance (File file, char[] password)
Returns a loaded keystore object of the appropriate keystore type. First the keystore type is determined by probing the specified file. Then a keystore object is instantiated and loaded using the data from that file.
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.
This method traverses the list of registered security
providers, starting with the most
preferred Provider.
For each KeyStoreSpi
implementation supported by a
Provider, it invokes the engineProbe
method to
determine if it supports the specified keystore.
A new KeyStore object is returned that encapsulates the KeyStoreSpi
implementation from the first Provider that supports the specified file.
Note that the list of registered providers may be retrieved via
the Security.getProviders()
method.
Parameters | |
---|---|
file |
File : the keystore file |
password |
char : the keystore password, which may be null |
Returns | |
---|---|
KeyStore |
a keystore object loaded with keystore data |
Throws | |
---|---|
KeyStoreException |
if no Provider supports a KeyStoreSpi implementation for the specified keystore file. |
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 cause
of the IOException should be an
UnrecoverableKeyException . |
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. |
IllegalArgumentException |
if file does not exist or does not refer to a normal file. |
NullPointerException |
if file is null . |
SecurityException |
if a security manager exists and its
SecurityManager.checkRead(FileDescriptor) method denies
read access to the specified file. |
See also:
getInstance
public static KeyStore getInstance (String type, String provider)
Returns a keystore object of the specified type.
A new KeyStore object encapsulating the KeyStoreSpi implementation from the specified provider is returned. The specified provider must be registered in the security provider list.
Note that the list of registered providers may be retrieved via
the Security.getProviders()
method.
Parameters | |
---|---|
type |
String : the type of keystore.
See the KeyStore section in the
Java Security Standard Algorithm Names Specification
for information about standard keystore types. |
provider |
String : the name of the provider. |
Returns | |
---|---|
KeyStore |
a keystore object of the specified type |
Throws | |
---|---|
KeyStoreException |
if a KeyStoreSpi implementation for the specified type is not available from the specified provider. |
NoSuchProviderException |
if the specified provider is not registered in the security provider list. |
IllegalArgumentException |
if the provider name is null or empty. |
See also:
getInstance
public static KeyStore getInstance (String type, Provider provider)
Returns a keystore object of the specified type.
A new KeyStore object encapsulating the KeyStoreSpi implementation from the specified Provider object is returned. Note that the specified Provider object does not have to be registered in the provider list.
Parameters | |
---|---|
type |
String : the type of keystore.
See the KeyStore section in the
Java Security Standard Algorithm Names Specification
for information about standard keystore types. |
provider |
Provider : the provider. |
Returns | |
---|---|
KeyStore |
a keystore object of the specified type |
Throws | |
---|---|
IllegalArgumentException |
if the specified provider is
null |
KeyStoreException |
if KeyStoreSpi
implementation for the specified type is not available
from the specified Provider object |
NullPointerException |
if type is null |
See also:
getInstance
public static final KeyStore getInstance (File file, KeyStore.LoadStoreParameter param)
Returns a loaded keystore object of the appropriate keystore type.
First the keystore type is determined by probing the specified file.
Then a keystore object is instantiated and loaded using the data from
that file.
A LoadStoreParameter
may be supplied which specifies how to
unlock the keystore data or perform an integrity check.
This method traverses the list of registered security providers, starting with the most preferred Provider.
For each KeyStoreSpi
implementation supported by a
Provider, it invokes the engineProbe
method to
determine if it supports the specified keystore.
A new KeyStore object is returned that encapsulates the KeyStoreSpi
implementation from the first Provider that supports the specified file.
Note that the list of registered providers may be retrieved via
the Security.getProviders()
method.
Parameters | |
---|---|
file |
File : the keystore file |
param |
KeyStore.LoadStoreParameter : the LoadStoreParameter that specifies how to load
the keystore, which may be null |
Returns | |
---|---|
KeyStore |
a keystore object loaded with keystore data |
Throws | |
---|---|
KeyStoreException |
if no Provider supports a KeyStoreSpi implementation for the specified keystore file. |
IOException |
if there is an I/O or format problem with the
keystore data. If the error is due to an incorrect
ProtectionParameter (e.g. wrong password)
the cause of the
IOException should be an
UnrecoverableKeyException . |
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. |
IllegalArgumentException |
if file does not exist or does not refer to a normal file, or if param is not recognized. |
NullPointerException |
if file is null . |
SecurityException |
if a security manager exists and its
SecurityManager.checkRead(FileDescriptor) method denies
read access to the specified file. |
See also:
getKey
public final Key getKey (String alias, char[] password)
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 |
String : the alias name |
password |
char : the password for recovering the key |
Returns | |
---|---|
Key |
the requested key, or null if the given alias does not exist or does not identify a key-related entry. |
Throws | |
---|---|
KeyStoreException |
if the keystore has not been initialized (loaded). |
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). |
getProvider
public final Provider getProvider ()
Returns the provider of this keystore.
Returns | |
---|---|
Provider |
the provider of this keystore. |
getType
public final String getType ()
Returns the type of this keystore.
Returns | |
---|---|
String |
the type of this keystore. |
isCertificateEntry
public final boolean isCertificateEntry (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
.
Parameters | |
---|---|
alias |
String : the alias for the keystore entry to be checked |
Returns | |
---|---|
boolean |
true if the entry identified by the given alias contains a trusted certificate, false otherwise. |
Throws | |
---|---|
KeyStoreException |
if the keystore has not been initialized (loaded). |
isKeyEntry
public final boolean isKeyEntry (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
.
Parameters | |
---|---|
alias |
String : the alias for the keystore entry to be checked |
Returns | |
---|---|
boolean |
true if the entry identified by the given alias is a key-related entry, false otherwise. |
Throws | |
---|---|
KeyStoreException |
if the keystore has not been initialized (loaded). |
load
public final void load (KeyStore.LoadStoreParameter param)
Loads this keystore using the given LoadStoreParameter
.
Note that if this KeyStore has already been loaded, it is reinitialized and loaded again from the given parameter.
Parameters | |
---|---|
param |
KeyStore.LoadStoreParameter : the LoadStoreParameter
that specifies how to load the keystore,
which may be null |
Throws | |
---|---|
IllegalArgumentException |
if the given
LoadStoreParameter
input is not recognized |
IOException |
if there is an I/O or format problem with the
keystore data. If the error is due to an incorrect
ProtectionParameter (e.g. wrong password)
the cause of the
IOException should be an
UnrecoverableKeyException |
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 |
load
public final void load (InputStream stream, char[] password)
Loads this 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.
In order to create an empty keystore, or if the keystore cannot
be initialized from a stream, pass null
as the stream
argument.
Note that if this keystore has already been loaded, it is reinitialized and loaded again from the given input stream.
Parameters | |
---|---|
stream |
InputStream : the input stream from which the keystore is loaded,
or null |
password |
char : the password used to check the integrity of
the keystore, the password used to unlock the keystore,
or null |
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. If the error is due to a
wrong password, the cause of the
IOException should be an
UnrecoverableKeyException |
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 |
setCertificateEntry
public final void setCertificateEntry (String alias, Certificate cert)
Assigns the given trusted 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.
Parameters | |
---|---|
alias |
String : the alias name |
cert |
Certificate : the certificate |
Throws | |
---|---|
KeyStoreException |
if the keystore has not been initialized, or the given alias already exists and does not identify an entry containing a trusted certificate, or this operation fails for some other reason. |
setEntry
public final void setEntry (String alias, KeyStore.Entry entry, KeyStore.ProtectionParameter protParam)
Saves a keystore Entry
under the specified alias.
The protection parameter is used to protect the
Entry
.
If an entry already exists for the specified alias, it is overridden.
Parameters | |
---|---|
alias |
String : save the keystore Entry under this alias |
entry |
KeyStore.Entry : the Entry to save |
protParam |
KeyStore.ProtectionParameter : the ProtectionParameter
used to protect the Entry ,
which may be null |
Throws | |
---|---|
NullPointerException |
if
alias or entry
is null |
KeyStoreException |
if the keystore has not been initialized (loaded), or if this operation fails for some other reason |
setKeyEntry
public final void setKeyEntry (String alias, Key key, char[] password, Certificate[] chain)
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 |
String : the alias name |
key |
Key : the key to be associated with the alias |
password |
char : the password to protect the key |
chain |
Certificate : the certificate chain for the corresponding public
key (only required if the given key is of type
java.security.PrivateKey ). |
Throws | |
---|---|
KeyStoreException |
if the keystore has not been initialized (loaded), the given key cannot be protected, or this operation fails for some other reason |
setKeyEntry
public final void setKeyEntry (String alias, byte[] key, Certificate[] chain)
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
underlying keystore implementation is of type jks
,
key
must be encoded as an
EncryptedPrivateKeyInfo
as defined in the PKCS #8 standard.
If the given alias already exists, the keystore information associated with it is overridden by the given key (and possibly certificate chain).
Parameters | |
---|---|
alias |
String : the alias name |
key |
byte : the key (in protected format) to be associated with the alias |
chain |
Certificate : the certificate chain for the corresponding public
key (only useful if the protected key is of type
java.security.PrivateKey ). |
Throws | |
---|---|
KeyStoreException |
if the keystore has not been initialized (loaded), or if this operation fails for some other reason. |
size
public final int size ()
Retrieves the number of entries in this keystore.
Returns | |
---|---|
int |
the number of entries in this keystore |
Throws | |
---|---|
KeyStoreException |
if the keystore has not been initialized (loaded). |
store
public final void store (OutputStream stream, char[] password)
Stores this keystore to the given output stream, and protects its integrity with the given password.
Parameters | |
---|---|
stream |
OutputStream : the output stream to which this keystore is written. |
password |
char : the password to generate the keystore integrity check |
Throws | |
---|---|
KeyStoreException |
if the keystore has not been initialized (loaded). |
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 |
store
public final void store (KeyStore.LoadStoreParameter param)
Stores this keystore using the given LoadStoreParameter
.
Parameters | |
---|---|
param |
KeyStore.LoadStoreParameter : the LoadStoreParameter
that specifies how to store the keystore,
which may be null |
Throws | |
---|---|
IllegalArgumentException |
if the given
LoadStoreParameter
input is not recognized |
KeyStoreException |
if the keystore has not been initialized (loaded) |
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 |