iaik.x509

Class RawPublicKey

java.lang.Object

iaik.x509.PublicKeyInfo

iaik.x509.RawPublicKey

All Implemented Interfaces:

ASN1Type, java.io.Serializable, java.lang.Cloneable, java.security.Key, java.security.PublicKey

public class RawPublicKey
extends PublicKeyInfo
implements java.io.Serializable, java.lang.Cloneable

This class implements a raw, generic X.509 public key as may appear in an X.509 certificate or, for instance, PKCS#10 certificate request.

When parsing the public key contained in a, e.g., certificate, method PublicKeyInfo.getPublicKey(ASN1Object) tries to instantiate a KeyFactory for the key algorithm. If no KeyFactory is available a generic raw public key is created allowing to get some information about the key (algorithm, encoding).

Version:

File Revision 29

See Also:

Serialized Form

Field Summary

Fields inherited from class iaik.x509.PublicKeyInfo

public_key_algorithm

Constructor Summary

Constructors

Constructor and Description
RawPublicKey(ASN1Object obj) Creates a raw X509PublicKey from the given ASN.1 object.
RawPublicKey(byte[] pk) Creates a raw X509 PublicKey from the given DER encoded byte array.
RawPublicKey(java.io.InputStream is) Creates a raw X509PublicKey from an InputStream.

Method Summary

Methods

Modifier and Type	Method and Description
protected void	decode(byte[] publicKey) Decodes a raw X509PublicKey, encoded in DER format.
byte[]	encode() Returns the raw public key (not wrapped in a X.509 PublicKeyInfo) as DER encoded ASN.1 object.
java.lang.String	getAlgorithm() Returns the name of the key algorithm.
java.lang.String	toString() Returns a string representation of this key.

Methods inherited from class iaik.x509.PublicKeyInfo

clone, createPublicKeyInfo, decode, equals, getAlgorithmID, getEncoded, getFingerprint, getFormat, getPublicKey, getPublicKey, getPublicKey, getPublicKey, getPublicKey, getPublicKey, hashCode, toASN1Object, writeTo

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

RawPublicKey

public RawPublicKey(byte[] pk)
             throws java.security.InvalidKeyException

Creates a raw X509 PublicKey from the given DER encoded byte array.

Parameters:

pk - the byte array holding the DER encoded public key info

Throws:

java.security.InvalidKeyException - if something is wrong with the key encoding

RawPublicKey

public RawPublicKey(ASN1Object obj)
             throws java.security.InvalidKeyException

Creates a raw X509PublicKey from the given ASN.1 object.

Parameters:

obj - the public key ASN.1 structure

Throws:

java.security.InvalidKeyException - if something is wrong with the key encoding

RawPublicKey

public RawPublicKey(java.io.InputStream is)
             throws java.io.IOException,
                    java.security.InvalidKeyException

Creates a raw X509PublicKey from an InputStream.

Parameters:

is - an input stream with the data to be read to initialize the public key

Throws:

java.io.IOException - if an I/O error occurs

java.security.InvalidKeyException - if something is wrong with the key encoding

Method Detail

decode

protected void decode(byte[] publicKey)
               throws java.security.InvalidKeyException

Decodes a raw X509PublicKey, encoded in DER format.

This method only keeps the key encoding.

Specified by:

decode in class PublicKeyInfo

Parameters:

publicKey - the public key as DER encoded ASN.1 object

Throws:

java.security.InvalidKeyException - if something is wrong with the encoding of the key

encode

public byte[] encode()

Returns the raw public key (not wrapped in a X.509 PublicKeyInfo) as DER encoded ASN.1 object.

This method typically may not be used by an application. Rather it is used by the parent X.509 PublicKeyInfo.getEncoded() method for encoding the public key.

Specified by:

encode in class PublicKeyInfo

Returns:

a byte array holding the raw public key as a DER encoded ASN.1 data structure

getAlgorithm

public java.lang.String getAlgorithm()

Returns the name of the key algorithm.

Specified by:

getAlgorithm in interface java.security.Key

Specified by:

getAlgorithm in class PublicKeyInfo

Returns:

the key algorithm name

toString

public java.lang.String toString()

Returns a string representation of this key.

Overrides:

toString in class PublicKeyInfo

Returns:

the string representation