Added in API level 1

X509EncodedKeySpec

public class X509EncodedKeySpec
extends EncodedKeySpec

java.lang.Object
   ↳ java.security.spec.EncodedKeySpec
     ↳ java.security.spec.X509EncodedKeySpec


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 }
 

Summary

Public constructors

X509EncodedKeySpec(byte[] encodedKey)

Creates a new X509EncodedKeySpec with the given encoded key.

X509EncodedKeySpec(byte[] encodedKey, String algorithm)

Creates a new X509EncodedKeySpec with the given encoded key.

Public methods

byte[] getEncoded()

Returns the key bytes, encoded according to the X.509 standard.

final String getFormat()

Returns the name of the encoding format associated with this key specification.

Inherited methods

Public constructors

X509EncodedKeySpec

Added in API level 1
public X509EncodedKeySpec (byte[] encodedKey)

Creates a new X509EncodedKeySpec with the given encoded key.

Parameters
encodedKey byte: 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 if encodedKey is null.

X509EncodedKeySpec

Added in API level 35
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 byte: 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 String: 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 if encodedKey or algorithm is null.
IllegalArgumentException if algorithm is the empty string ""

Public methods

getEncoded

Added in API level 1
public byte[] getEncoded ()

Returns the key bytes, encoded according to the X.509 standard.

Returns
byte[] the X.509 encoding of the key. Returns a new array each time this method is called.

getFormat

Added in API level 1
public final String getFormat ()

Returns the name of the encoding format associated with this key specification.

Returns
String the string "X.509".