Returns the PEM encoding of this SPKI.
In cases no timestamp token has been created, this field contains further info about the reason why response creation failed. The method returns either nil (the request was successful and a timestamp token was created) or one of the following:
:BAD_ALG - Indicates that the timestamp server rejects the message imprint algorithm used in the Request
:BAD_REQUEST - Indicates that the timestamp server was not able to process the Request properly
:BAD_DATA_FORMAT - Indicates that the timestamp server was not able to parse certain data in the Request
:TIME_NOT_AVAILABLE - Indicates that the server could not access its time source
:UNACCEPTED_POLICY - Indicates that the requested policy identifier is not recognized or supported by the timestamp server
:UNACCEPTED_EXTENSIION - Indicates that an extension in the Request is not supported by the timestamp server
:ADD_INFO_NOT_AVAILABLE -Indicates that additional information requested is either not understood or currently not available
:SYSTEM_FAILURE - Timestamp creation failed due to an internal error that occurred on the timestamp server
General callback for OpenSSL verify
Gets credentials based on user, domain or both. If both are nil, an error occurs
Returns true if the MKD command may be used to create a new directory within the directory.