org.bouncycastle.jcajce.provider.asymmetric.dh
Class KeyAgreementSpi

java.lang.Object
  |
  +--javax.crypto.KeyAgreementSpi
        |
        +--org.bouncycastle.jcajce.provider.asymmetric.util.BaseAgreementSpi
              |
              +--org.bouncycastle.jcajce.provider.asymmetric.dh.KeyAgreementSpi

Direct Known Subclasses:

KeyAgreementSpi.DHUwithSHA1CKDF, KeyAgreementSpi.DHUwithSHA1KDF, KeyAgreementSpi.DHUwithSHA224CKDF, KeyAgreementSpi.DHUwithSHA224KDF, KeyAgreementSpi.DHUwithSHA256CKDF, KeyAgreementSpi.DHUwithSHA256KDF, KeyAgreementSpi.DHUwithSHA384CKDF, KeyAgreementSpi.DHUwithSHA384KDF, KeyAgreementSpi.DHUwithSHA512CKDF, KeyAgreementSpi.DHUwithSHA512KDF, KeyAgreementSpi.DHwithRFC2631KDF, KeyAgreementSpi.DHwithSHA1CKDF, KeyAgreementSpi.DHwithSHA1KDF, KeyAgreementSpi.DHwithSHA224CKDF, KeyAgreementSpi.DHwithSHA224KDF, KeyAgreementSpi.DHwithSHA256CKDF, KeyAgreementSpi.DHwithSHA256KDF, KeyAgreementSpi.DHwithSHA384CKDF, KeyAgreementSpi.DHwithSHA384KDF, KeyAgreementSpi.DHwithSHA512CKDF, KeyAgreementSpi.DHwithSHA512KDF, KeyAgreementSpi.MQVwithSHA1CKDF, KeyAgreementSpi.MQVwithSHA1KDF, KeyAgreementSpi.MQVwithSHA224CKDF, KeyAgreementSpi.MQVwithSHA224KDF, KeyAgreementSpi.MQVwithSHA256CKDF, KeyAgreementSpi.MQVwithSHA256KDF, KeyAgreementSpi.MQVwithSHA384CKDF, KeyAgreementSpi.MQVwithSHA384KDF, KeyAgreementSpi.MQVwithSHA512CKDF, KeyAgreementSpi.MQVwithSHA512KDF

public class KeyAgreementSpi

extends BaseAgreementSpi

Diffie-Hellman key agreement. There's actually a better way of doing this if you are using long term public keys, see the light-weight version for details.

Inner Class Summary

static class	KeyAgreementSpi.DHUwithSHA1CKDF
static class	KeyAgreementSpi.DHUwithSHA1KDF
static class	KeyAgreementSpi.DHUwithSHA224CKDF
static class	KeyAgreementSpi.DHUwithSHA224KDF
static class	KeyAgreementSpi.DHUwithSHA256CKDF
static class	KeyAgreementSpi.DHUwithSHA256KDF
static class	KeyAgreementSpi.DHUwithSHA384CKDF
static class	KeyAgreementSpi.DHUwithSHA384KDF
static class	KeyAgreementSpi.DHUwithSHA512CKDF
static class	KeyAgreementSpi.DHUwithSHA512KDF
static class	KeyAgreementSpi.DHwithRFC2631KDF
static class	KeyAgreementSpi.DHwithSHA1CKDF
static class	KeyAgreementSpi.DHwithSHA1KDF
static class	KeyAgreementSpi.DHwithSHA224CKDF
static class	KeyAgreementSpi.DHwithSHA224KDF
static class	KeyAgreementSpi.DHwithSHA256CKDF
static class	KeyAgreementSpi.DHwithSHA256KDF
static class	KeyAgreementSpi.DHwithSHA384CKDF
static class	KeyAgreementSpi.DHwithSHA384KDF
static class	KeyAgreementSpi.DHwithSHA512CKDF
static class	KeyAgreementSpi.DHwithSHA512KDF
static class	KeyAgreementSpi.MQVwithSHA1CKDF
static class	KeyAgreementSpi.MQVwithSHA1KDF
static class	KeyAgreementSpi.MQVwithSHA224CKDF
static class	KeyAgreementSpi.MQVwithSHA224KDF
static class	KeyAgreementSpi.MQVwithSHA256CKDF
static class	KeyAgreementSpi.MQVwithSHA256KDF
static class	KeyAgreementSpi.MQVwithSHA384CKDF
static class	KeyAgreementSpi.MQVwithSHA384KDF
static class	KeyAgreementSpi.MQVwithSHA512CKDF
static class	KeyAgreementSpi.MQVwithSHA512KDF

Fields inherited from class org.bouncycastle.jcajce.provider.asymmetric.util.BaseAgreementSpi

kaAlgorithm, kdf, ukmParameters

Constructor Summary

KeyAgreementSpi()

KeyAgreementSpi(java.lang.String kaAlgorithm, BasicAgreement mqvAgreement, DerivationFunction kdf)

KeyAgreementSpi(java.lang.String kaAlgorithm, DerivationFunction kdf)

KeyAgreementSpi(java.lang.String kaAlgorithm, DHUnifiedAgreement unifiedAgreement, DerivationFunction kdf)

Method Summary

protected byte[]	bigIntToBytes(java.math.BigInteger r)
protected byte[]	doCalcSecret()
protected void	doInitFromKey(java.security.Key key, java.security.spec.AlgorithmParameterSpec params, java.security.SecureRandom random)
protected java.security.Key	engineDoPhase(java.security.Key key, boolean lastPhase)
protected byte[]	engineGenerateSecret()
protected int	engineGenerateSecret(byte[] sharedSecret, int offset)
protected javax.crypto.SecretKey	engineGenerateSecret(java.lang.String algorithm)
protected void	engineInit(java.security.Key key, java.security.SecureRandom random)

Methods inherited from class org.bouncycastle.jcajce.provider.asymmetric.util.BaseAgreementSpi

engineInit, getAlgorithm, getKeySize, trimZeroes

Methods inherited from class java.lang.Object

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

Constructor Detail

KeyAgreementSpi

public KeyAgreementSpi()

KeyAgreementSpi

public KeyAgreementSpi(java.lang.String kaAlgorithm,
                       DerivationFunction kdf)

KeyAgreementSpi

public KeyAgreementSpi(java.lang.String kaAlgorithm,
                       DHUnifiedAgreement unifiedAgreement,
                       DerivationFunction kdf)

KeyAgreementSpi

public KeyAgreementSpi(java.lang.String kaAlgorithm,
                       BasicAgreement mqvAgreement,
                       DerivationFunction kdf)

Method Detail

bigIntToBytes

protected byte[] bigIntToBytes(java.math.BigInteger r)

engineDoPhase

protected java.security.Key engineDoPhase(java.security.Key key,
                                          boolean lastPhase)
                                   throws java.security.InvalidKeyException,
                                          java.lang.IllegalStateException

Overrides:

engineDoPhase in class javax.crypto.KeyAgreementSpi

engineGenerateSecret

protected byte[] engineGenerateSecret()
                               throws java.lang.IllegalStateException

Overrides:

engineGenerateSecret in class BaseAgreementSpi

engineGenerateSecret

protected int engineGenerateSecret(byte[] sharedSecret,
                                   int offset)
                            throws java.lang.IllegalStateException,
                                   javax.crypto.ShortBufferException

Overrides:

engineGenerateSecret in class BaseAgreementSpi

engineGenerateSecret

protected javax.crypto.SecretKey engineGenerateSecret(java.lang.String algorithm)
                                               throws java.security.NoSuchAlgorithmException

Overrides:

engineGenerateSecret in class BaseAgreementSpi

doInitFromKey

protected void doInitFromKey(java.security.Key key,
                             java.security.spec.AlgorithmParameterSpec params,
                             java.security.SecureRandom random)
                      throws java.security.InvalidKeyException,
                             java.security.InvalidAlgorithmParameterException

Overrides:

doInitFromKey in class BaseAgreementSpi

engineInit

protected void engineInit(java.security.Key key,
                          java.security.SecureRandom random)
                   throws java.security.InvalidKeyException

Overrides:

engineInit in class BaseAgreementSpi

doCalcSecret

protected byte[] doCalcSecret()

Overrides:

doCalcSecret in class BaseAgreementSpi