Package org.bouncycastle.tls.crypto.impl

Class AbstractTlsSecret

java.lang.Object

org.bouncycastle.tls.crypto.impl.AbstractTlsSecret

All Implemented Interfaces:

TlsSecret

Direct Known Subclasses:

BcTlsSecret, JceTlsSecret

public abstract class AbstractTlsSecret
extends Object
implements TlsSecret

Base class for a TlsSecret implementation which captures common code and fields.

Field Summary

Fields

Modifier and Type	Field	Description
protected byte[]	data

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractTlsSecret(byte[] data)	Base constructor.

Method Summary

Modifier and Type	Method	Description
byte[]	calculateHMAC(int cryptoHashAlgorithm, byte[] buf, int off, int len)	Calculate an HMAC with this secret's data as the key.
protected void	checkAlive()
protected static byte[]	copyData(AbstractTlsSecret other)
void	destroy()	Destroy the internal state of the secret.
byte[]	encrypt(TlsEncryptor encryptor)	Return an encrypted copy of the data this secret is based on.
byte[]	extract()	Return the internal data from this secret.
protected abstract AbstractTlsCrypto	getCrypto()
boolean	isAlive()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.bouncycastle.tls.crypto.TlsSecret

deriveUsingPRF, hkdfExpand, hkdfExtract

Field Details

data

protected byte[] data

Constructor Details

AbstractTlsSecret

protected AbstractTlsSecret(byte[] data)

Base constructor.

Parameters:

data - the byte[] making up the secret value.

Method Details

copyData

protected static byte[] copyData(AbstractTlsSecret other)

checkAlive

protected void checkAlive()

getCrypto

protected abstract AbstractTlsCrypto getCrypto()

calculateHMAC

public byte[] calculateHMAC(int cryptoHashAlgorithm,
 byte[] buf,
 int off,
 int len)

Description copied from interface: TlsSecret

Calculate an HMAC with this secret's data as the key.

Specified by:

calculateHMAC in interface TlsSecret

Parameters:

cryptoHashAlgorithm - the hash algorithm to instantiate HMAC with. See CryptoHashAlgorithm for values.

buf - array containing the input data.

off - offset into the input array the input starts at.

len - the length of the input data.

Returns:

destroy

public void destroy()

Description copied from interface: TlsSecret

Destroy the internal state of the secret. After this call, any attempt to use the TlsSecret will result in an IllegalStateException being thrown.

Specified by:

destroy in interface TlsSecret

encrypt

public byte[] encrypt(TlsEncryptor encryptor)
               throws IOException

Description copied from interface: TlsSecret

Return an encrypted copy of the data this secret is based on.

Specified by:

encrypt in interface TlsSecret

Parameters:

encryptor - the encryptor to use for protecting the internal data.

Returns:

an encrypted copy of this secret's internal data.

Throws:

IOException

extract

public byte[] extract()

Description copied from interface: TlsSecret

Return the internal data from this secret. The TlsSecret does not keep a copy of the data. After this call, any attempt to use the TlsSecret will result in an IllegalStateException being thrown.

Specified by:

extract in interface TlsSecret

Returns:

the secret's internal data.

isAlive

public boolean isAlive()

Specified by:

isAlive in interface TlsSecret