Class IdAaSignatureTimeStampToken

java.lang.Object

br.ufsc.labsec.signature.conformanceVerifier.cades.attributes.TimeStamp<org.bouncycastle.asn1.cms.Attribute>

br.ufsc.labsec.signature.conformanceVerifier.cades.attributes.unsigned.TimeStampToken

br.ufsc.labsec.signature.conformanceVerifier.cades.attributes.unsigned.IdAaSignatureTimeStampToken

All Implemented Interfaces:

SignatureAttribute<org.bouncycastle.asn1.cms.Attribute>, Comparable<TimeStamp<org.bouncycastle.asn1.cms.Attribute>>

public class IdAaSignatureTimeStampToken
extends TimeStampToken

Representa o carimbo do tempo da assinatura.

Oid e esquema do atributo id-aa-signatureTimeStampToken retirado do documento ETSI TS 101 733 V1.8.1:

id-aa-signatureTimeStampToken OBJECT IDENTIFIER ::= { iso(1) member-body(2)
us(840) rsadsi(113549) pkcs(1) pkcs-9(9) smime(16) id-aa(2) 14}

SignatureTimeStampToken ::= TimeStampToken

Field Summary

Fields

Modifier and Type	Field	Description
static final String	IDENTIFIER

Fields inherited from class TimeStampToken

FAILURE_TO_VALIDATE_TIMESTAMP, INVALID_ASYMMETRIC_CIPHER_ERROR, INVALID_TIMESTAMP_ERROR, signatureVerifier

Fields inherited from class TimeStamp

contentInfo, index

Constructor Summary

Constructors

Constructor	Description
IdAaSignatureTimeStampToken(AbstractVerifier signatureVerifier, Integer index)	Deve-se utilizar este construtor no momento de validação do atributo.
IdAaSignatureTimeStampToken(org.bouncycastle.asn1.cms.Attribute genericEncoding)	Constrói um objeto IdAaSignatureTimeStampToken
IdAaSignatureTimeStampToken(org.bouncycastle.asn1.cms.ContentInfo contentInfo)	Constrói um objeto IdAaSignatureTimeStampToken a partir de um ContentInfo

Method Summary

Modifier and Type	Method	Description
protected byte[]	getAttributeHash(String identifier, boolean hashWithoutTag)	Calcula o hash do atributo
String	getIdentifier()	Indica o identificador do atributo.
protected boolean	isAttributeHashValid(String identifier, boolean hashWithoutTag, byte[] expected)
protected TimeStampVerifier	makeTimeStampVerifier(org.bouncycastle.tsp.TimeStampToken timeStamp, boolean containsRefsTimestamp, boolean containsArchiveTimestamp)	Obtém um TimeStampVerifier.

Methods inherited from class TimeStampToken

createSignerInformationVerifier, getArchiveTimeStampContentInfo, getAttributeHash, getEncoded, isAnyAttributeHashValid, isAttributeHashValid, isSigned, isUnique, setVerifier, validate, validate

Methods inherited from class TimeStamp

addUnsignedAttribute, buildTimeStampToken, compareTo, contentInfoToSignatureContainer, getAttributeList, getContentInfo, getEncodedAttribute, getEncodedAttribute, getTimeReference, removeUnsignedAttribute, replaceUnsignedAttribute

Methods inherited from class Object

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

Methods inherited from interface SignatureAttribute

getValue

Field Details

IDENTIFIER

public static final String IDENTIFIER

Constructor Details

IdAaSignatureTimeStampToken

public IdAaSignatureTimeStampToken(AbstractVerifier signatureVerifier,
 Integer index)
                            throws SignatureAttributeException

Deve-se utilizar este construtor no momento de validação do atributo. O parâmetro index deve ser usado no caso em que há mais de um atributo do mesmo tipo. Caso contrário, ele deve ser zero.

Parameters:

signatureVerifier - Usado para criar e verificar o atributo

index - Índice usado para selecionar o atributo

Throws:

SignatureAttributeException

IdAaSignatureTimeStampToken

public IdAaSignatureTimeStampToken(org.bouncycastle.asn1.cms.Attribute genericEncoding)
                            throws SignatureAttributeException

Constrói um objeto IdAaSignatureTimeStampToken

Parameters:

genericEncoding - O atributo codificado

Throws:

SignatureAttributeException

IdAaSignatureTimeStampToken

public IdAaSignatureTimeStampToken(org.bouncycastle.asn1.cms.ContentInfo contentInfo)
                            throws SignatureAttributeException

Constrói um objeto IdAaSignatureTimeStampToken a partir de um ContentInfo

Parameters:

contentInfo - O conteúdo do carimbo do tempo

Throws:

SignatureAttributeException

Method Details

getIdentifier

public String getIdentifier()

Indica o identificador do atributo.

Specified by:

getIdentifier in interface SignatureAttribute<org.bouncycastle.asn1.cms.Attribute>

Specified by:

getIdentifier in class TimeStamp<org.bouncycastle.asn1.cms.Attribute>

Returns:

Retorna "1.2.840.113549.1.9.16.2.14"

getAttributeHash

protected byte[] getAttributeHash(String identifier,
 boolean hashWithoutTag)
                           throws NoSuchAlgorithmException

Calcula o hash do atributo

Specified by:

getAttributeHash in class TimeStampToken

Parameters:

identifier - O algoritmo utilizado

hashWithoutTag - Indica a forma de cálculo da hash, de acordo com as notas 2 e 3 da pagina 109 do ETSI TS 101 733 V2.2.1. Se verdadeiro indica que o calculo é feito sem incluir tag e length.

Returns:

O valor de hash do atributo

Throws:

NoSuchAlgorithmException

isAttributeHashValid

protected boolean isAttributeHashValid(String identifier,
 boolean hashWithoutTag,
 byte[] expected)

Specified by:

isAttributeHashValid in class TimeStampToken

makeTimeStampVerifier

protected TimeStampVerifier makeTimeStampVerifier(org.bouncycastle.tsp.TimeStampToken timeStamp,
 boolean containsRefsTimestamp,
 boolean containsArchiveTimestamp)

Obtém um TimeStampVerifier.

Overrides:

makeTimeStampVerifier in class TimeStampToken

Returns:

O objeto TimeStampVerifier criado