Interface TSAClient


interface TSAClient
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.

Since:
2.1.6
  • Method Summary

    Modifier and Type
    Method
    Description
    byte[]
    getTimeStampToken(PdfPKCS7 caller, byte[] imprint)
    Get RFC 3161 timeStampToken.
    int
    Get the time stamp token size estimate.
  • Method Details

    • getTokenSizeEstimate

      int getTokenSizeEstimate()
      Get the time stamp token size estimate. Implementation must return value large enough to accomodate the entire token returned by getTimeStampToken() _prior_ to actual getTimeStampToken() call.
      Returns:
      an estimate of the token size
    • getTimeStampToken

      byte[] getTimeStampToken(PdfPKCS7 caller, byte[] imprint) throws Exception
      Get RFC 3161 timeStampToken. Method may return null indicating that timestamp should be skipped.
      Parameters:
      caller - PdfPKCS7 - calling PdfPKCS7 instance (in case caller needs it)
      imprint - byte[] - data imprint to be time-stamped
      Returns:
      byte[] - encoded, TSA signed data of the timeStampToken
      Throws:
      Exception - - TSA request failed