iaik.pdf.itext

Class TSAClientIAIK

java.lang.Object

iaik.pdf.itext.TSAClientIAIK

All Implemented Interfaces:

com.itextpdf.text.pdf.security.TSAClient

public class TSAClientIAIK
extends java.lang.Object
implements com.itextpdf.text.pdf.security.TSAClient

IAIK implementation of TSAClient interface. Sends a timestamp request and returns the encoded timestamp token.

Constructor Summary

Constructors

Constructor and Description
TSAClientIAIK(java.lang.String url) Constructor using a TSA, that needs no authentication.
TSAClientIAIK(java.lang.String url, java.lang.String username, java.lang.String password) Constructor using a TSA requiring authentication.
TSAClientIAIK(java.lang.String url, java.lang.String username, java.lang.String password, int tokSzEstimate, java.lang.String digestAlgorithm) Constructor using a TSA requiring authentication.

Method Summary

Modifier and Type	Method and Description
java.security.MessageDigest	getMessageDigest() Gets the MessageDigest, that shall be used to digest the data for the message imprint
byte[]	getTimeStampToken(byte[] imprint) Get timestamp token.
int	getTokenSizeEstimate() Get the token size estimate.

Methods inherited from class java.lang.Object

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

Constructor Detail

TSAClientIAIK

public TSAClientIAIK(java.lang.String url)

Constructor using a TSA, that needs no authentication.

Parameters:

url - URL of the time stamp authority

TSAClientIAIK

public TSAClientIAIK(java.lang.String url,
                     java.lang.String username,
                     java.lang.String password)

Constructor using a TSA requiring authentication.

Parameters:

url - URL of the time stamp authority

username - username to authenticate at TSA

password - password to authenticate at TSA

TSAClientIAIK

public TSAClientIAIK(java.lang.String url,
                     java.lang.String username,
                     java.lang.String password,
                     int tokSzEstimate,
                     java.lang.String digestAlgorithm)

Constructor using a TSA requiring authentication. The given size estimation and digest algorithm are used.

Parameters:

url - URL of the time stamp authority

username - username to authenticate at TSA

password - password to authenticate at TSA

tokSzEstimate - bytes that shall be reserved for the time stamp token

digestAlgorithm - digest algorithm that has been used to hash the data

Method Detail

getTokenSizeEstimate

public int getTokenSizeEstimate()

Get the token size estimate.

Specified by:

getTokenSizeEstimate in interface com.itextpdf.text.pdf.security.TSAClient

Returns:

an estimate of the token size

getTimeStampToken

public byte[] getTimeStampToken(byte[] imprint)
                         throws PdfSignatureException,
                                iaik.tsp.TspVerificationException

Get timestamp token. Sends timestamp request and return encoded timestamp token.

Specified by:

getTimeStampToken in interface com.itextpdf.text.pdf.security.TSAClient

Parameters:

imprint - hashed data to be timestamped

Returns:

time stamp token, received from the TSA

Throws:

PdfSignatureException - if time stamp request can't be sent or time stamp token is not valid

iaik.tsp.TspVerificationException

getMessageDigest

public java.security.MessageDigest getMessageDigest()
                                             throws java.security.GeneralSecurityException

Gets the MessageDigest, that shall be used to digest the data for the message imprint

Specified by:

getMessageDigest in interface com.itextpdf.text.pdf.security.TSAClient

Returns:

the MessageDigest instance to be used

Throws:

java.security.GeneralSecurityException