Class X509EncodedKeySpec
- java.lang.Object
-
- java.security.spec.EncodedKeySpec
-
- java.security.spec.X509EncodedKeySpec
- All Implemented Interfaces:
KeySpec
public class X509EncodedKeySpec extends EncodedKeySpec
This class represents the ASN.1 encoding of a public key, encoded according to the ASN.1 type SubjectPublicKeyInfo
. The SubjectPublicKeyInfo
syntax is defined in the X.509 standard as follows:
SubjectPublicKeyInfo ::= SEQUENCE { algorithm AlgorithmIdentifier, subjectPublicKey BIT STRING }
- Since:
- 1.2
- See Also:
-
Key
,KeyFactory
,KeySpec
,EncodedKeySpec
,PKCS8EncodedKeySpec
Constructor Summary
Constructor | Description |
---|---|
X509EncodedKeySpec(byte[] encodedKey) | Creates a new |
X509EncodedKeySpec(byte[] encodedKey,
String algorithm) | Creates a new |
Method Summary
Modifier and Type | Method | Description |
---|---|---|
byte[] | getEncoded() | Returns the key bytes, encoded according to the X.509 standard. |
String | getFormat() | Returns the name of the encoding format associated with this key specification. |
Methods declared in class java.security.spec.EncodedKeySpec
getAlgorithm
Methods declared in class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Constructor Detail
X509EncodedKeySpec
public X509EncodedKeySpec(byte[] encodedKey)
Creates a new X509EncodedKeySpec
with the given encoded key.
- Parameters:
-
encodedKey
- the key, which is assumed to be encoded according to the X.509 standard. The contents of the array are copied to protect against subsequent modification. - Throws:
-
NullPointerException
- ifencodedKey
is null.
X509EncodedKeySpec
public X509EncodedKeySpec(byte[] encodedKey, String algorithm)
Creates a new X509EncodedKeySpec
with the given encoded key. This constructor is useful when subsequent callers of the X509EncodedKeySpec
object might not know the algorithm of the key.
- Parameters:
-
encodedKey
- the key, which is assumed to be encoded according to the X.509 standard. The contents of the array are copied to protect against subsequent modification. -
algorithm
- the algorithm name of the encoded public key See the KeyFactory section in the Java Security Standard Algorithm Names Specification for information about standard algorithm names. - Throws:
-
NullPointerException
- ifencodedKey
oralgorithm
is null. -
IllegalArgumentException
- ifalgorithm
is the empty string""
- Since:
- 9
Method Detail
getEncoded
public byte[] getEncoded()
Returns the key bytes, encoded according to the X.509 standard.
- Overrides:
-
getEncoded
in classEncodedKeySpec
- Returns:
- the X.509 encoding of the key. Returns a new array each time this method is called.
getFormat
public final String getFormat()
Returns the name of the encoding format associated with this key specification.
- Specified by:
-
getFormat
in classEncodedKeySpec
- Returns:
- the string
"X.509"
.