Class ChipAuthenticationPublicKeyInfo

Object
   |
   +--ChipAuthenticationPublicKeyInfo

class ChipAuthenticationPublicKeyInfo

This class encodes and decodes ChipAuthenticationPublicKeyInfo objects.

The class implements the following ASN.1 syntax:

	ChipAuthenticationPublicKeyInfo ::= SEQUENCE {
		protocol OBJECT IDENTIFIER(id-PK-DH | id-PK-ECDH),
		chipAuthenticationPublicKey SubjectPublicKeyInfo,
		keyId INTEGER OPTIONAL
	}

	SubjectPublicKeyInfo ::= SEQUENCE {
		algorithm  AlgorithmIdentifier,
		subjectPublicKey BIT STRING
	}

	AlgorithmIdentifier ::= SEQUENCE {
		algorithm  OBJECT IDENTIFIER,
		parameters ANY DEFINED BY algorithm OPTIONAL
	}
 

Field Detail

algorithm

Object algorithm

domainParameter

Object domainParameter

keyId

Object keyId

protocol

Object protocol

publicKey

Object publicKey

standardizedDomainParameter

Object standardizedDomainParameter

ChipAuthenticationPublicKeyInfo

ChipAuthenticationPublicKeyInfo(tlv)

Create a ChipAuthenticationPublicKeyInfo object

Parameters:
the - optional tlv structure to initialize the object

toString

Object toString()

toTLV

ASN1 toTLV()

Convert object to TLV structure

Returns:
the TLV structure

convertUnsignedInteger

<static> ByteString convertUnsignedInteger(<ByteString> value)

Removes leading zeros and prepends a single '00' to ByteStrings which have the most significant bit set. This prevent interpretation of the integer representation if converted into a signed ASN1 INTEGER.

Parameters:
value - the value to convert

Returns:
the converted value

createECSubjectPublicKeyInfo

<static> ASN1 createECSubjectPublicKeyInfo(publicKey, encodeECDomainParameter)

Creates the EC Public Key as subjectPublicKeyInfo TLV structure object.

The structure is defined as:

	SubjectPublicKeyInfo  ::=  SEQUENCE  {
		algorithm            AlgorithmIdentifier,
		subjectPublicKey     BIT STRING  }

	AlgorithmIdentifier  ::=  SEQUENCE  {
		algorithm               OBJECT IDENTIFIER,
		parameters              ANY DEFINED BY algorithm OPTIONAL  }
 
	id-ecPublicKey OBJECT IDENTIFIER ::= {
		iso(1) member-body(2) us(840) ansi-X9-62(10045) keyType(2) 1 }

	ECParameters ::= CHOICE {
		namedCurve         OBJECT IDENTIFIER,
		implicitCurve      NULL,
		specifiedCurve     SpecifiedECDomain }
 

Returns:
the subjectPublicKey TLV structure