Wch text format is ts, “The text is transcribed exactly as it sounds and includes all the utterances of the speakers. ”?
Answers
openssl ts -query [-rand file:file...] [-config configfile] [-data file_to_hash] [-digest digest_bytes] [-md2|-md4|-md5|-sha|-sha1|-mdc2|-ripemd160|...] [-policy object_id] [-no_nonce] [-cert] [-in request.tsq] [-out request.tsq] [-text]
openssl ts -reply [-config configfile] [-section tsa_section] [-queryfile request.tsq] [-passin password_src] [-signer tsa_cert.pem] [-inkey private.pem] [-chain certs_file.pem] [-policy object_id] [-in response.tsr] [-token_in] [-out response.tsr] [-token_out] [-text] [-engine id]
openssl ts -verify [-data file_to_hash] [-digest digest_bytes] [-queryfile request.tsq] [-in response.tsr] [-token_in] [-CApath trusted_cert_path] [-CAfile trusted_certs.pem] [-untrusted cert_file.pem]
DESCRIPTION
The ts command is a basic Time Stamping Authority (TSA) client and server application as specified in RFC 3161 (Time-Stamp Protocol, TSP). A TSA can be part of a PKI deployment and its role is to provide long term proof of the existence of a certain datum before a particular time. Here is a brief description of the protocol:
The TSA client computes a one-way hash value for a data file and sends the hash to the TSA.
The TSA attaches the current date and time to the received hash value, signs them and sends the time stamp token back to the client. By creating this token the TSA certifies the existence of the original data file at the time of response generation.
The TSA client receives the time stamp token and verifies the signature on it. It also checks if the token contains the same hash value that it had sent to the TSA.
There is one DER encoded protocol data unit defined for transporting a time stamp request to the TSA and one for sending the time stamp response back to the client. The ts command has three main functions: creating a time stamp request based on a data file, creating a time stamp response based on a request, verifying if a response corresponds to a particular request or a data file.
There is no support for sending the requests/responses automatically over HTTP or TCP yet as suggested in RFC 3161. The users must send the requests either by ftp or e-mail.
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