Class SecureKeyBlockBuilder

java.lang.Object

org.jpos.security.SecureKeyBlockBuilder

public class SecureKeyBlockBuilder
extends Object

The builder class to create and parse key block structure.

Field Summary

Fields

Modifier and Type	Field	Description
protected static final int	SIZE_HEADER
protected static final int	SIZE_HEADER_3DES
protected static final int	SIZE_HEADER_AES
protected static final int	SIZE_KEY_VERSION
protected static final int	SIZE_KEYBLOCK_LENGTH
protected static final int	SIZE_KEYBLOCK_VERSION
protected static final int	SIZE_KEYUSAGE
protected static final int	SIZE_NUMOFOPTHDR
protected static final int	SIZE_OPTHDR_ID
protected static final int	SIZE_OPTHDR_LENGTH
protected static final int	SIZE_RESERVED

Method Summary

Modifier and Type	Method	Description
SecureKeyBlock	build(CharSequence data)
protected static int	calcOptionalHeaderLength(Map<String,String> optHdrs)
protected int	getMACLength(SecureKeyBlock skb)
static SecureKeyBlockBuilder	newBuilder()
protected static Map<String,String>	parseOptionalHeader(StringReader sr, int numOfBlocks)
protected static char	readChar(StringReader sr)
protected static String	readString(StringReader sr, int len)
String	toKeyBlock(SecureKeyBlock skb)
SecureKeyBlockBuilder	with8characterMACVersions(String versions)	Configure key block versions with 8 digits key block MAC.

Methods inherited from class Object

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

Field Details

SIZE_KEYBLOCK_VERSION

protected static final int SIZE_KEYBLOCK_VERSION

See Also:

• Constant Field Values

SIZE_KEYBLOCK_LENGTH

protected static final int SIZE_KEYBLOCK_LENGTH

See Also:

• Constant Field Values

SIZE_KEYUSAGE

protected static final int SIZE_KEYUSAGE

See Also:

• Constant Field Values

SIZE_KEY_VERSION

protected static final int SIZE_KEY_VERSION

See Also:

• Constant Field Values

SIZE_NUMOFOPTHDR

protected static final int SIZE_NUMOFOPTHDR

See Also:

• Constant Field Values

SIZE_RESERVED

protected static final int SIZE_RESERVED

See Also:

• Constant Field Values

SIZE_HEADER

protected static final int SIZE_HEADER

See Also:

• Constant Field Values

SIZE_OPTHDR_ID

protected static final int SIZE_OPTHDR_ID

See Also:

• Constant Field Values

SIZE_OPTHDR_LENGTH

protected static final int SIZE_OPTHDR_LENGTH

See Also:

• Constant Field Values

SIZE_HEADER_3DES

protected static final int SIZE_HEADER_3DES

See Also:

• Constant Field Values

SIZE_HEADER_AES

protected static final int SIZE_HEADER_AES

See Also:

• Constant Field Values

Method Details

newBuilder

public static SecureKeyBlockBuilder newBuilder()

with8characterMACVersions

public SecureKeyBlockBuilder with8characterMACVersions(String versions)

Configure key block versions with 8 digits key block MAC.

Default 8 digits (4 bytes) key block MAC versions are:

• 'A' TR-31:2005 Key block protected using the Key Variant Binding Method
• 'B' TR-31:2010 Key block protected using the Key Derivation Binding Method
• 'C' TR-31:2010 Key block protected using the Key Variant Binding Method
• '0' Proprietary Key block protected using the 3-DES key

Parameters:

versions - the string with versions characters

Returns:

This builder instance

getMACLength

protected int getMACLength(SecureKeyBlock skb)

readString

protected static String readString(StringReader sr,
 int len)

readChar

protected static char readChar(StringReader sr)

parseOptionalHeader

protected static Map<String,String> parseOptionalHeader(StringReader sr,
 int numOfBlocks)

calcOptionalHeaderLength

protected static int calcOptionalHeaderLength(Map<String,String> optHdrs)

build

public SecureKeyBlock build(CharSequence data)
                     throws IllegalArgumentException

Throws:

IllegalArgumentException

toKeyBlock

public String toKeyBlock(SecureKeyBlock skb)