Interface ITSAClient

Namespace

iText.Signatures

Assembly

itext.sign.dll

Time Stamp Authority client (caller) interface.

public interface ITSAClient

Remarks

Time Stamp Authority client (caller) interface.

Interface used by the PdfPKCS7 digital signature builder to call Time Stamp Authority providing RFC 3161 compliant time stamp token.

Methods

GetMessageDigest()

Returns the iText.Commons.Bouncycastle.Crypto.IDigest to digest the data imprint

IDigest GetMessageDigest()

Returns

IDigest

The iText.Commons.Bouncycastle.Crypto.IDigest object.

GetTimeStampToken(byte[])

Returns RFC 3161 timeStampToken.

byte[] GetTimeStampToken(byte[] imprint)

Parameters

imprint byte[]

byte[] - data imprint to be time-stamped

Returns

byte[]

byte[] - encoded, TSA signed data of the timeStampToken

GetTokenSizeEstimate()

Get the time stamp estimated token size.

int GetTokenSizeEstimate()

Returns

int

an estimate of the token size

Remarks

Get the time stamp estimated token size. Implementation must return value large enough to accommodate the entire token returned by GetTimeStampToken(byte[]) prior to actual GetTimeStampToken(byte[]) call.