net.messagevortex.asn1

Class AbstractRedundancyOperation

java.lang.Object

net.messagevortex.asn1.AbstractBlock

net.messagevortex.asn1.Operation

net.messagevortex.asn1.AbstractRedundancyOperation

All Implemented Interfaces:

Serializable, Block, Dumpable, org.bouncycastle.asn1.ASN1Choice

Direct Known Subclasses:

AddRedundancyOperation, RemoveRedundancyOperation

public abstract class AbstractRedundancyOperation
extends Operation
implements org.bouncycastle.asn1.ASN1Choice, Serializable, Dumpable

Represents a the Blending specification of the router block.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static int	DATA_STRIPES
static int	GF_SIZE
static int	INPUT_ID
static int	KEYS
static int	OUTPUT_ID
static int	REDUNDANCY
static long	serialVersionUID

Fields inherited from class net.messagevortex.asn1.AbstractBlock

CRLF

Constructor Summary

Constructors

Constructor and Description
AbstractRedundancyOperation(org.bouncycastle.asn1.ASN1Encodable to) Create object from ASN.1 code.
AbstractRedundancyOperation(int inputId, int dataStripes, int redundancy, List<SymmetricKey> stripeKeys, int newFirstId, int gfSize) Creates an appropriate operation with the given GF size and properties.

Method Summary

Modifier and Type	Method and Description
String	dumpValueNotation(String prefix, DumpType dumpType) Dumps the ASN1 value representation of the removeRedundancy operation.
int	getDataStripes()
int	getGfSize()
int	getInputId()
SymmetricKey[]	getKeys() Gets the omega parameter of the Galois field.
int	getOutputId() gets the id of the first output payload block.
int	getRedundancy()
protected void	parse(org.bouncycastle.asn1.ASN1Encodable p)
int	setDataStripes(int stripes) Sets the number of data stripes for this operation.
int	setGfSize(int omega) Sets the omega parameter of the Galois field.
int	setInputId(int id) Sets the id of the first input id of the payload.
SymmetricKey[]	setKeys(List<SymmetricKey> keys) Sets the keys to be used to encrypt all input respective output fields.
int	setOutputId(int id) Sets the id of the first output block of the function.
int	setRedundancy(int stripes) sets the number of redundancy stripes.
org.bouncycastle.asn1.ASN1Object	toAsn1Object(DumpType dumpType) Dumps an ASN.1 representation of the object.

Methods inherited from class net.messagevortex.asn1.Operation

getNewInstance, getTagNumber, setTagNumber

Methods inherited from class net.messagevortex.asn1.AbstractBlock

fromBase64, fromHex, parse, prepareDump, toBase64, toBitString, toBytes, toDer, toHex

Methods inherited from class java.lang.Object

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

Field Detail

serialVersionUID

public static final long serialVersionUID

See Also:

Constant Field Values

INPUT_ID

public static final int INPUT_ID

See Also:

Constant Field Values

DATA_STRIPES

public static final int DATA_STRIPES

See Also:

Constant Field Values

REDUNDANCY

public static final int REDUNDANCY

See Also:

Constant Field Values

KEYS

public static final int KEYS

See Also:

Constant Field Values

OUTPUT_ID

public static final int OUTPUT_ID

See Also:

Constant Field Values

GF_SIZE

public static final int GF_SIZE

See Also:

Constant Field Values

Constructor Detail

AbstractRedundancyOperation

public AbstractRedundancyOperation(int inputId,
                                   int dataStripes,
                                   int redundancy,
                                   List<SymmetricKey> stripeKeys,
                                   int newFirstId,
                                   int gfSize)

Creates an appropriate operation with the given GF size and properties.

Parameters:

inputId - first ID of the input workspace

dataStripes - number of data stripes contained in operation

redundancy - number of redundancy stripes

stripeKeys - keys for the resulting stripes (number should be dataStripes+redundancy)

newFirstId - first output ID

gfSize - Size of the Galois Field in bits

AbstractRedundancyOperation

public AbstractRedundancyOperation(org.bouncycastle.asn1.ASN1Encodable to)
                            throws IOException

Create object from ASN.1 code.

Parameters:

to - the ASN.1 code

Throws:

IOException - if parsing of ASN.1 code fails

Method Detail

parse

protected final void parse(org.bouncycastle.asn1.ASN1Encodable p)
                    throws IOException

Specified by:

parse in class AbstractBlock

Throws:

IOException

toAsn1Object

public org.bouncycastle.asn1.ASN1Object toAsn1Object(DumpType dumpType)
                                              throws IOException

Description copied from interface: Dumpable

Dumps an ASN.1 representation of the object.

Specified by:

toAsn1Object in interface Dumpable

Parameters:

dumpType - the dump type to be used

Returns:

the ASN.1 string representation of the object

Throws:

IOException - if dumping of the object fails due to an illegal internal state of the object

dumpValueNotation

public String dumpValueNotation(String prefix,
                                DumpType dumpType)

Dumps the ASN1 value representation of the removeRedundancy operation.

Specified by:

dumpValueNotation in interface Block

Returns:

the representation of the object

setInputId

public final int setInputId(int id)

Sets the id of the first input id of the payload.

Parameters:

id - the new first input id

Returns:

the previously set first input id

getInputId

public final int getInputId()

setDataStripes

public final int setDataStripes(int stripes)

Sets the number of data stripes for this operation.

Parameters:

stripes - The number of data stripes to be used for the redundancy operation

Returns:

the previously set number of stripes

Throws:

ArithmeticException - if all stripes together are not accommodated in the given GF field

getDataStripes

public final int getDataStripes()

setRedundancy

public final int setRedundancy(int stripes)

sets the number of redundancy stripes.

Parameters:

stripes - the number of redundancy stripes to be set

Returns:

the previous number of redundancy stripes

Throws:

ArithmeticException - if the defined GF size is unable to accommodated all values

getRedundancy

public int getRedundancy()

setKeys

public final SymmetricKey[] setKeys(List<SymmetricKey> keys)

Sets the keys to be used to encrypt all input respective output fields.

Parameters:

keys - a list of keys

Returns:

the old list of keys

Throws:

ArithmeticException - if the number of keys does not match the number of stripes

getKeys

public SymmetricKey[] getKeys()

Gets the omega parameter of the Galois field.

Returns:

the omega parameter of the GF.

setGfSize

public final int setGfSize(int omega)

Sets the omega parameter of the Galois field.

Parameters:

omega - the omega of the new GF

Returns:

the previous omega parameter of the GF.

Throws:

ArithmeticException - if the number of all stripes in total ( data and redundancy) exceeds the address space of the GF

getGfSize

public final int getGfSize()

setOutputId

public int setOutputId(int id)

Sets the id of the first output block of the function.

Parameters:

id - the first id to be used

Returns:

old first value (before the write

getOutputId

public int getOutputId()

gets the id of the first output payload block.

Returns:

id of the respective block