Package net.aifusion.asn

Class BitStringValue

java.lang.Object

net.aifusion.asn.AsnValue

net.aifusion.asn.BitStringValue

public class BitStringValue
extends AsnValue

Class to represent an ASN.1 BitString

Author:

Sharad Singhal

Constructor Summary

Constructors

Constructor	Description
BitStringValue(byte[] bits)	Create a BitString from a byte [].
BitStringValue(String bitString)	Create a BitString.

Method Summary

Modifier and Type	Method	Description
static BitStringValue	create(byte[] buffer, int blen, int cursor)	Create a bit string from an encoded value
boolean	equals(Object obj)
byte[]	getEncodedValue()	Get the encoded value for this ASN.1 value.
int	getLength()	Get the size of this bit string
String	getValue()	Get the value of this bit string.
int	hashCode()
boolean	isSet(int index)	Check if a particular bit in this bitSet is set
String	toAsnString(String prefix)	Get a (semi) ASN.1 notation for this value.
String	toString()

Methods inherited from class net.aifusion.asn.AsnValue

getTag, getTagClass, getTagEncoding, getTagNumber, toHex, toHex, toHex, toHex

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Details

BitStringValue

public BitStringValue(byte[] bits)

Create a BitString from a byte []. Note that bits[bits.length-1] is the MSB in the bitString

Parameters:

bits - - byte array containing bits in the Bit String

BitStringValue

public BitStringValue(String bitString)

Create a BitString. Note that java BitSets are little-endian, while ASN.1 are big-endian. Bit 0 is the left-most bit in the string representation

Parameters:

bitString - - bit string using the ASN.1 bit string format 'nnn...'[B|H]

Method Details

create

public static BitStringValue create(byte[] buffer,
 int blen,
 int cursor)

Create a bit string from an encoded value

Parameters:

buffer - - input buffer

blen - - length of input buffer

cursor - - current position of the cursor in the input buffer

Returns:

- bit string value

getValue

public String getValue()

Get the value of this bit string.

Returns:

value of this string

getLength

public int getLength()

Get the size of this bit string

Overrides:

getLength in class AsnValue

Returns:

length of this bit string

isSet

public boolean isSet(int index)

Check if a particular bit in this bitSet is set

Parameters:

index - - index of the bit to check. Bit 0 is the left-most bit.

Returns:

- true if the bit is set, false otherwise

getEncodedValue

public byte[] getEncodedValue()

Description copied from class: AsnValue

Get the encoded value for this ASN.1 value. This method should be implemented by subclasses to provide the encoded ASN.1 value

Specified by:

getEncodedValue in class AsnValue

Returns:

byte [] containing encoded value for this ASN.1 value (including tag, length, content)

toAsnString

public String toAsnString(String prefix)

Description copied from class: AsnValue

Get a (semi) ASN.1 notation for this value.

Overrides:

toAsnString in class AsnValue

Parameters:

prefix - - prefix to add to each line

Returns:

- string containing the ASN.1 value

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object