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org.bouncycastle.asn1.x9

public Class KeySpecificInfo

extends ASN1Object
Class Inheritance
Imports
java.util.Enumeration, org.bouncycastle.asn1.ASN1EncodableVector, .ASN1Object, .ASN1ObjectIdentifier, .ASN1OctetString, .ASN1Primitive, .ASN1Sequence, .DERSequence
ASN.1 def for Diffie-Hellman key exchange KeySpecificInfo structure. See RFC 2631, or X9.42, for further details. 
 KeySpecificInfo ::= SEQUENCE {
     algorithm OBJECT IDENTIFIER,
     counter OCTET STRING SIZE (4..4)
 }

Field Summary

Modifier and TypeField and Description
private ASN1ObjectIdentifier
algorithm

private ASN1OctetString
counter

Constructor Summary

AccessConstructor and Description
public
KeySpecificInfo(ASN1ObjectIdentifier
algorithm identifier for the CEK.
algorithm, ASN1OctetString
initial counter value for key derivation.
counter)

Base constructor.

private
KeySpecificInfo(ASN1Sequence seq)

Method Summary

Modifier and TypeMethod and Description
public ASN1ObjectIdentifier

Returns:

CEK wrapping algorithm OID.
getAlgorithm()

The object identifier for the CEK wrapping algorithm.

public ASN1OctetString

Returns:

initial counter value as a 4 byte octet string (big endian).
getCounter()

The initial counter value for key derivation.

public static KeySpecificInfo

Returns:

a KeySpecificInfo
getInstance(Object
an object for conversion or a byte[].
obj)

Return a KeySpecificInfo object from the passed in object.

public ASN1Primitive

Returns:

a DERSequence containing the KeySpecificInfo values.
toASN1Primitive()

Implements abstract org.bouncycastle.asn1.ASN1Object.toASN1Primitive.

Implements org.bouncycastle.asn1.ASN1Encodable.toASN1Primitive.

Return an ASN.1 primitive representation of this object.
Inherited from org.bouncycastle.asn1.ASN1Object:
encodeToencodeToequalsgetEncodedgetEncodedhasEncodedTagValuehashCode

Field Detail

algorithmback to summary
private ASN1ObjectIdentifier algorithm
counterback to summary
private ASN1OctetString counter

Constructor Detail

KeySpecificInfoback to summary
public KeySpecificInfo(ASN1ObjectIdentifier algorithm, ASN1OctetString counter)

Base constructor.

Parameters
algorithm:ASN1ObjectIdentifier

algorithm identifier for the CEK.

counter:ASN1OctetString

initial counter value for key derivation.

KeySpecificInfoback to summary
private KeySpecificInfo(ASN1Sequence seq)

Method Detail

getAlgorithmback to summary
public ASN1ObjectIdentifier getAlgorithm()

The object identifier for the CEK wrapping algorithm.

Returns:ASN1ObjectIdentifier

CEK wrapping algorithm OID.

getCounterback to summary
public ASN1OctetString getCounter()

The initial counter value for key derivation.

Returns:ASN1OctetString

initial counter value as a 4 byte octet string (big endian).

getInstanceback to summary
public static KeySpecificInfo getInstance(Object obj)

Return a KeySpecificInfo object from the passed in object.

Parameters
obj:Object

an object for conversion or a byte[].

Returns:KeySpecificInfo

a KeySpecificInfo

toASN1Primitiveback to summary
public ASN1Primitive toASN1Primitive()

Implements abstract org.bouncycastle.asn1.ASN1Object.toASN1Primitive.

Implements org.bouncycastle.asn1.ASN1Encodable.toASN1Primitive.

Return an ASN.1 primitive representation of this object.

Returns:ASN1Primitive

a DERSequence containing the KeySpecificInfo values.