Package org.jose4j.jwe

Class EcdhKeyAgreementAlgorithm

java.lang.Object

org.jose4j.jwa.AlgorithmInfo

org.jose4j.jwe.EcdhKeyAgreementAlgorithm

All Implemented Interfaces:

Algorithm, KeyManagementAlgorithm

public class EcdhKeyAgreementAlgorithm
extends AlgorithmInfo
implements KeyManagementAlgorithm

Field Summary

Fields

Modifier and Type	Field	Description
(package private) String	algorithmIdHeaderName

Fields inherited from class org.jose4j.jwa.AlgorithmInfo

log

Constructor Summary

Constructors

Constructor	Description
EcdhKeyAgreementAlgorithm()
EcdhKeyAgreementAlgorithm(String algorithmIdHeaderName)

Method Summary

Modifier and Type	Method	Description
private void	checkCurveAllowed(ECKey receiverKey)
private void	checkPointIsOnCurve(ECPublicKey ephemeralPublicKey, ECPrivateKey privateKey)
private KeyAgreement	createKeyAgreement(PrivateKey privateKey, PublicKey publicKey, ProviderContext providerContext)
private byte[]	generateEcdhSecret(PrivateKey privateKey, PublicKey publicKey, ProviderContext providerContext)
private KeyAgreement	getKeyAgreement(String provider, String javaAlgorithm)
boolean	isAvailable()
private byte[]	kdf(ContentEncryptionKeyDescriptor cekDesc, Headers headers, byte[] z, ProviderContext providerContext)
Key	manageForDecrypt(CryptoPrimitive cryptoPrimitive, byte[] encryptedKey, ContentEncryptionKeyDescriptor cekDesc, Headers headers, ProviderContext providerContext)
ContentEncryptionKeys	manageForEncrypt(Key managementKey, ContentEncryptionKeyDescriptor cekDesc, Headers headers, byte[] cekOverride, ProviderContext providerContext)
(package private) ContentEncryptionKeys	manageForEncrypt(Key managementKey, ContentEncryptionKeyDescriptor cekDesc, Headers headers, PublicJsonWebKey ephemeralJwk, ProviderContext providerContext)
CryptoPrimitive	prepareForDecrypt(Key managementKey, Headers headers, ProviderContext providerContext)
void	validateDecryptionKey(Key managementKey, ContentEncryptionAlgorithm contentEncryptionAlg)
void	validateEncryptionKey(Key managementKey, ContentEncryptionAlgorithm contentEncryptionAlg)

Methods inherited from class org.jose4j.jwa.AlgorithmInfo

getAlgorithmIdentifier, getJavaAlgorithm, getKeyPersuasion, getKeyType, setAlgorithmIdentifier, setJavaAlgorithm, setKeyPersuasion, setKeyType, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.jose4j.jwa.Algorithm

getAlgorithmIdentifier, getJavaAlgorithm, getKeyPersuasion, getKeyType

Field Details

algorithmIdHeaderName

String algorithmIdHeaderName

Constructor Details

EcdhKeyAgreementAlgorithm

public EcdhKeyAgreementAlgorithm()

EcdhKeyAgreementAlgorithm

public EcdhKeyAgreementAlgorithm(String algorithmIdHeaderName)

Method Details

manageForEncrypt

public ContentEncryptionKeys manageForEncrypt(Key managementKey,
 ContentEncryptionKeyDescriptor cekDesc,
 Headers headers,
 byte[] cekOverride,
 ProviderContext providerContext)
                                       throws JoseException

Specified by:

manageForEncrypt in interface KeyManagementAlgorithm

Throws:

JoseException

checkCurveAllowed

private void checkCurveAllowed(ECKey receiverKey)
                        throws InvalidKeyException

Throws:

InvalidKeyException

manageForEncrypt

ContentEncryptionKeys manageForEncrypt(Key managementKey,
 ContentEncryptionKeyDescriptor cekDesc,
 Headers headers,
 PublicJsonWebKey ephemeralJwk,
 ProviderContext providerContext)
                                throws JoseException

Throws:

JoseException

prepareForDecrypt

public CryptoPrimitive prepareForDecrypt(Key managementKey,
 Headers headers,
 ProviderContext providerContext)
                                  throws JoseException

Specified by:

prepareForDecrypt in interface KeyManagementAlgorithm

Throws:

JoseException

manageForDecrypt

public Key manageForDecrypt(CryptoPrimitive cryptoPrimitive,
 byte[] encryptedKey,
 ContentEncryptionKeyDescriptor cekDesc,
 Headers headers,
 ProviderContext providerContext)
                     throws JoseException

Specified by:

manageForDecrypt in interface KeyManagementAlgorithm

Throws:

JoseException

checkPointIsOnCurve

private void checkPointIsOnCurve(ECPublicKey ephemeralPublicKey,
 ECPrivateKey privateKey)
                          throws JoseException

Throws:

JoseException

kdf

private byte[] kdf(ContentEncryptionKeyDescriptor cekDesc,
 Headers headers,
 byte[] z,
 ProviderContext providerContext)

getKeyAgreement

private KeyAgreement getKeyAgreement(String provider,
 String javaAlgorithm)
                              throws JoseException

Throws:

JoseException

createKeyAgreement

private KeyAgreement createKeyAgreement(PrivateKey privateKey,
 PublicKey publicKey,
 ProviderContext providerContext)
                                 throws JoseException

Throws:

JoseException

generateEcdhSecret

private byte[] generateEcdhSecret(PrivateKey privateKey,
 PublicKey publicKey,
 ProviderContext providerContext)
                           throws JoseException

Throws:

JoseException

validateEncryptionKey

public void validateEncryptionKey(Key managementKey,
 ContentEncryptionAlgorithm contentEncryptionAlg)
                           throws InvalidKeyException

Specified by:

validateEncryptionKey in interface KeyManagementAlgorithm

Throws:

InvalidKeyException

validateDecryptionKey

public void validateDecryptionKey(Key managementKey,
 ContentEncryptionAlgorithm contentEncryptionAlg)
                           throws InvalidKeyException

Specified by:

validateDecryptionKey in interface KeyManagementAlgorithm

Throws:

InvalidKeyException

isAvailable

public boolean isAvailable()

Specified by:

isAvailable in interface Algorithm