com.entrust.toolkit.security.provider

Class ECDSAPublicKey

java.lang.Object

iaik.x509.PublicKeyInfo

com.entrust.toolkit.security.provider.ECDSAPublicKey

All Implemented Interfaces:

ASN1Type, java.io.Serializable, java.security.Key, java.security.PublicKey, java.security.spec.KeySpec

Deprecated.

since 7.2 SP2; use EcPublicKey instead

public class ECDSAPublicKey
extends PublicKeyInfo
implements java.io.Serializable, java.security.spec.KeySpec

Enables the storage of ECDSA public keys.

The user-specific part of the key is a point on the related curve given as an OCTET STRING. The entire public key is then ASN1-wrapped as SubjectPublicKeyInfo as defined in X9.62 to enable the encoding of algorithm and parameter settings.

The ASN1 structure is as follows:

 SubjectPublicKeyInfo  ::=  SEQUENCE  {
   algorithm  AlgorithmIdentifier,
   subjectPublicKey   BIT STRING  }
 

where:

 AlgorithmIdentifier  ::=  SEQUENCE  {
   algorithm               OBJECT IDENTIFIER,
   parameters              ANY DEFINED BY algorithm OPTIONAL  }
 

The subject public key is a DER encoded ECPoint wrapped as a BIT STRING where the tag and length of the OCTET STRING are removed before wrapping.

Note

Parameters MUST be added for the ECDSA. For example, as an ASN1Object returned by ECParameters.toASN1Object(). Refer to X9.62 section 7.4 for more details.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static ObjectID	EC_PUBLIC_KEY Deprecated. Returns the EC Public Key OID (1.2.840.10045.2.1) as an ObjectID object.

Fields inherited from class iaik.x509.PublicKeyInfo

public_key_algorithm

Fields inherited from interface java.security.PublicKey

serialVersionUID

Constructor Summary

Constructors

Constructor and Description
ECDSAPublicKey(ASN1Object object) Deprecated. Initializes the ECDSA public key with an ASN1 structure in PKCS#8 format.
ECDSAPublicKey(byte[] array) Deprecated. Initializes the ECDSA public key with a DER encoded ASN1 structure in PKCS#8 format.
ECDSAPublicKey(ECParameters params, ECPoint point) Deprecated. Default public constructor that takes the parameter and the curve point as arguments.
ECDSAPublicKey(java.io.InputStream is) Deprecated. Initializes the ECDSA public key with a DER encoded ASN1 structure given as an input stream in PKCS#8 format.

Method Summary

Modifier and Type	Method and Description
void	decode(byte[] key) Deprecated. Initializes the public curve point, which is part of the ECDSA public key.
byte[]	encode() Deprecated. Encodes the user-specific part of the ECDSA public key as a raw point.
java.lang.String	getAlgorithm() Deprecated. Returns the name of the calling algorithm: ECDSA.
ECParameters	getECParameters() Deprecated. Returns the parameter value.
ECPoint	getECPublicPoint() Deprecated. Returns the public value, the point on the curve.

Methods inherited from class iaik.x509.PublicKeyInfo

createPublicKeyInfo, decode, equals, getEncoded, getFingerprint, getFormat, getPublicKey, getPublicKey, toASN1Object, toString, writeTo

Methods inherited from class java.lang.Object

clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

EC_PUBLIC_KEY

public static final ObjectID EC_PUBLIC_KEY

Deprecated.

Returns the EC Public Key OID (1.2.840.10045.2.1) as an ObjectID object.

Constructor Detail

ECDSAPublicKey

public ECDSAPublicKey(ECParameters params,
                      ECPoint point)

Deprecated.

Default public constructor that takes the parameter and the curve point as arguments.

Parameters:

params - the parameter set used for computing with the private key

point - the real private information

ECDSAPublicKey

public ECDSAPublicKey(ASN1Object object)
               throws java.security.InvalidKeyException

Deprecated.

Initializes the ECDSA public key with an ASN1 structure in PKCS#8 format.

Parameters:

object - - the public key as an ASN1Object structure

Throws:

java.security.InvalidKeyException - if the object is malformed

ECDSAPublicKey

public ECDSAPublicKey(byte[] array)
               throws java.security.InvalidKeyException

Deprecated.

Initializes the ECDSA public key with a DER encoded ASN1 structure in PKCS#8 format.

Parameters:

array - the private key as DER encoded ASN1 structure

Throws:

java.security.InvalidKeyException - if the object is malformed.

ECDSAPublicKey

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

Deprecated.

Initializes the ECDSA public key with a DER encoded ASN1 structure given as an input stream in PKCS#8 format.

Parameters:

is - the private key as DER encoded ASN1 structure as an input stream

Throws:

InvalidKeyException, - IOException if the object is malformed

java.security.InvalidKeyException

java.io.IOException

Method Detail

decode

public void decode(byte[] key)
            throws java.security.InvalidKeyException

Deprecated.

Initializes the public curve point, which is part of the ECDSA public key.

The public curve point must be given as raw point — the OCTET STRING tag and length must already have been removed.

Specified by:

decode in class PublicKeyInfo

Parameters:

key - the raw point

Throws:

java.security.InvalidKeyException - if the key is malformed

encode

public byte[] encode()

Deprecated.

Encodes the user-specific part of the ECDSA public key as a raw point.

Note

Call the methods getEncoded and toASN1Object for the PKCS#8 representation of this object.

Specified by:

encode in class PublicKeyInfo

Returns:

the user-specific part, the point on the curve, as raw point

getAlgorithm

public java.lang.String getAlgorithm()

Deprecated.

Returns the name of the calling algorithm: ECDSA.

Specified by:

getAlgorithm in interface java.security.Key

Specified by:

getAlgorithm in class PublicKeyInfo

Returns:

the String "ECDSA"

getECParameters

public ECParameters getECParameters()
                             throws CodingException

Deprecated.

Returns the parameter value.

Returns:

an ECParameters object

Throws:

CodingException

getECPublicPoint

public ECPoint getECPublicPoint()

Deprecated.

Returns the public value, the point on the curve.

Returns:

the point as an ECPoint object