info.pppc.base.security.key

Class ECCCertificate

java.lang.Object

info.pppc.base.security.AbstractCertificate

info.pppc.base.security.key.ECCCertificate

All Implemented Interfaces:

ICertificate

public class ECCCertificate
extends AbstractCertificate

Implements an elliptic curve cryptography certificate. Uses Bouncycastle for parsing in the parameters from a certificate (and a private key) file. Encryption/decryption are currently not supported.

Tries first to use the fast ECC implementation that is only compatible to the SECP160R1 curve. If this is not possibles falls back to a slower ECC implementation that allows the usage of more curves.

Author:

WA

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	ALGORITHM_ID
static java.lang.String	ANDROID_SIGNATURE_TYPE
static java.lang.String	SIGNATURE_TYPE

Fields inherited from interface info.pppc.base.security.ICertificate

AES_ENCRYPTION_MODE, CERTIFICATE_TYPE, DIGEST_TYPE, HMAC_ALGORITHM, RSA_ENCRYPTION_MODE

Constructor Summary

Constructors

Constructor and Description
ECCCertificate(byte[] certificate) Creates a new ECC certificate without the private key, only consisting of the public key.
ECCCertificate(byte[] certificate, byte[] privateKey) Creates a new ECCCertificate from a byte array.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(java.lang.Object obj) Every certificate type has to implement a comparison operator.
java.lang.String	getIssuer() Get the issuer of the certificate
IPrivateKey	getPrivateKey() Get the private key of the certificate
IPublicKey	getPublicKey() Get the public key of the certificate
byte[]	getSignature() Get the signature of the issuer of this certificate.
byte[]	getSignedPart() Returns the part of the certificate, that was signed by the issuer.
java.lang.String	getSubject() Get the subject of the certificate.
boolean	isFastKey() Test if the ECCCertificate uses the fast implementation created from SUN (using the SECP160R1 curve)

Methods inherited from class info.pppc.base.security.AbstractCertificate

createCertificate, createCertificate, decrypt, encrypt, getEndDate, getFingerprint, getStartDate, hashCode, hasPrivateKey, isValidRegardingStartAndEndDate, sign, toByteArray, toString, verifyCACertificateSignature, verifyCertificate, verifyCertificate, verifySignature

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Field Detail

ALGORITHM_ID

public static final java.lang.String ALGORITHM_ID

See Also:

Constant Field Values

SIGNATURE_TYPE

public static final java.lang.String SIGNATURE_TYPE

See Also:

Constant Field Values

ANDROID_SIGNATURE_TYPE

public static final java.lang.String ANDROID_SIGNATURE_TYPE

See Also:

Constant Field Values

Constructor Detail

ECCCertificate

public ECCCertificate(byte[] certificate,
              byte[] privateKey)
               throws java.io.IOException

Creates a new ECCCertificate from a byte array. Combines the certificate and the private key, if the parameter privateKey is not null. Uses code from the PrivateKeyFactory.java from Bouncycastle to create the private key.

Parameters:

certificate - The byte array containing the ECC certificate

privateKey - The byte array containing the corresponding private key of this ECC certificate or null if no such key exists

Throws:

java.io.IOException - If the byte array format is not compatible to the ECC format or if another read error occurs, this exception is thrown.

ECCCertificate

public ECCCertificate(byte[] certificate)
               throws java.io.IOException

Creates a new ECC certificate without the private key, only consisting of the public key.

Parameters:

certificate - The byte array containing the ECC certificate

Throws:

java.io.IOException - If the byte array format is not compatible to the ECC format or if another read error occurs, this exception is thrown.

See Also:

ECCCertificate(byte[], byte[])

Method Detail

getIssuer

public java.lang.String getIssuer()

Description copied from class: AbstractCertificate

Get the issuer of the certificate

Specified by:

getIssuer in interface ICertificate

Specified by:

getIssuer in class AbstractCertificate

Returns:

The issuer of the certificate as X509Name

getSubject

public java.lang.String getSubject()

Description copied from class: AbstractCertificate

Get the subject of the certificate.

Specified by:

getSubject in interface ICertificate

Specified by:

getSubject in class AbstractCertificate

Returns:

The subject (name) of the certificate as X509Name

getPrivateKey

public IPrivateKey getPrivateKey()

Description copied from class: AbstractCertificate

Get the private key of the certificate

Returns:

The private key of the certificate or null, if no private key exists

getPublicKey

public IPublicKey getPublicKey()

Description copied from class: AbstractCertificate

Get the public key of the certificate

Specified by:

getPublicKey in interface ICertificate

Specified by:

getPublicKey in class AbstractCertificate

Returns:

The public key of the certificate or null, if no public key exists

equals

public boolean equals(java.lang.Object obj)

Description copied from class: AbstractCertificate

Every certificate type has to implement a comparison operator. Usually an certificate equals another one, if ALL fields are identical. This method must returns true, if the certificate equal each other.

Specified by:

equals in interface ICertificate

Specified by:

equals in class AbstractCertificate

Parameters:

obj - The object of the type CertificateAbstraction that should be compared to the current certificate

Returns:

True, if the current certificate and the given certificate are equal, false otherwise

See Also:

Object.equals(java.lang.Object)

getSignature

public byte[] getSignature()

Description copied from class: AbstractCertificate

Get the signature of the issuer of this certificate. This is usually a signature about the signed part of the certificate.

Specified by:

getSignature in interface ICertificate

Specified by:

getSignature in class AbstractCertificate

Returns:

The signature of this certificate.

See Also:

AbstractCertificate.getSignedPart()

getSignedPart

public byte[] getSignedPart()

Description copied from class: AbstractCertificate

Returns the part of the certificate, that was signed by the issuer. In combination with the signature (and the certificate of the issuer), the authenticity of this certificate can be checked by anyone.

Specified by:

getSignedPart in interface ICertificate

Specified by:

getSignedPart in class AbstractCertificate

Returns:

The part of the certificate, that was signed by the certificate issuer.

isFastKey

public boolean isFastKey()

Test if the ECCCertificate uses the fast implementation created from SUN (using the SECP160R1 curve)

Returns:

True if this is a ECCCertificate using the fast SUN implementation (created for the SUNSpots), false otherwise.