This class provides the response corresponding to a timestamp request, as defined in RFC 3161. The TimeStampResp ASN.1 type has the following definition:

    TimeStampResp ::= SEQUENCE {
        status            PKIStatusInfo,
        timeStampToken    TimeStampToken OPTIONAL ]

    PKIStatusInfo ::= SEQUENCE {
        status        PKIStatus,
        statusString  PKIFreeText OPTIONAL,
        failInfo      PKIFailureInfo OPTIONAL }

    PKIStatus ::= INTEGER {
        granted                (0),
          -- when the PKIStatus contains the value zero a TimeStampToken, as
          -- requested, is present.
        grantedWithMods        (1),
          -- when the PKIStatus contains the value one a TimeStampToken,
          -- with modifications, is present.
        rejection              (2),
        waiting                (3),
        revocationWarning      (4),
          -- this message contains a warning that a revocation is
          -- imminent
        revocationNotification (5)
          -- notification that a revocation has occurred }

    PKIFreeText ::= SEQUENCE SIZE (1..MAX) OF UTF8String
          -- text encoded as UTF-8 String (note:  each UTF8String SHOULD
          -- include an RFC 1766 language tag to indicate the language
          -- of the contained text)

    PKIFailureInfo ::= BIT STRING {
        badAlg              (0),
          -- unrecognized or unsupported Algorithm Identifier
        badRequest          (2),
          -- transaction not permitted or supported
        badDataFormat       (5),
          -- the data submitted has the wrong format
        timeNotAvailable    (14),
          -- the TSA's time source is not available
        unacceptedPolicy    (15),
          -- the requested TSA policy is not supported by the TSA
        unacceptedExtension (16),
          -- the requested extension is not supported by the TSA
        addInfoNotAvailable (17)
          -- the additional information requested could not be understood
          -- or is not available
        systemFailure       (25)
          -- the request cannot be handled due to system failure }

    TimeStampToken ::= ContentInfo
        -- contentType is id-signedData
        -- content is SignedData
        -- eContentType within SignedData is id-ct-TSTInfo
        -- eContent within SignedData is TSTInfo