NAME
TS_REQ_new,
TS_REQ_free, TS_RESP_new,
TS_RESP_free,
TS_STATUS_INFO_new,
TS_STATUS_INFO_free,
TS_TST_INFO_new,
TS_TST_INFO_free,
TS_ACCURACY_new,
TS_ACCURACY_free,
TS_MSG_IMPRINT_new,
TS_MSG_IMPRINT_free —
X.509 time-stamp protocol
SYNOPSIS
#include
<openssl/ts.h>
TS_REQ *
TS_REQ_new(void);
void
TS_REQ_free(TS_REQ
*req);
TS_RESP *
TS_RESP_new(void);
void
TS_RESP_free(TS_RESP
*resp);
TS_STATUS_INFO *
TS_STATUS_INFO_new(void);
void
TS_STATUS_INFO_free(TS_STATUS_INFO
*status);
TS_TST_INFO *
TS_TST_INFO_new(void);
void
TS_TST_INFO_free(TS_TST_INFO
*token);
TS_ACCURACY *
TS_ACCURACY_new(void);
void
TS_ACCURACY_free(TS_ACCURACY
*accuracy);
TS_MSG_IMPRINT *
TS_MSG_IMPRINT_new(void);
void
TS_MSG_IMPRINT_free(TS_MSG_IMPRINT
*imprint);
DESCRIPTION
A time-stamping authority is a trusted third party which allows its clients to prove that specific data existed at a particular point in time. Clients send time-stamping requests to the time-stamping server, which returns time-stamp tokens to the clients.
TS_REQ_new()
allocates and initializes an empty TS_REQ object,
representing an ASN.1 TimeStampReq structure defined
in RFC 3161 section 2.4.1. It can hold a hash of the datum to be
time-stamped and some auxiliary, optional information.
TS_REQ_free()
frees req.
TS_RESP_new()
allocates and initializes an empty TS_RESP object,
representing an ASN.1 TimeStampResp structure defined
in RFC 3161 section 2.4.2. It can hold status information and a time-stamp
token.
TS_RESP_free()
frees resp.
TS_STATUS_INFO_new()
allocates and initializes an empty TS_STATUS_INFO
object, representing an ASN.1 PKIStatusInfo structure
defined in RFC 3161 section 2.4.2. It is used inside
TS_RESP and describes the outcome of one time-stamp
request.
TS_STATUS_INFO_free()
frees status.
TS_TST_INFO_new()
allocates and initializes an empty TS_TST_INFO object,
representing an ASN.1 TSTInfo structure defined in RFC
3161 section 2.4.2. It is the time-stamp token included in a
TS_RESP object in case of success, and it can hold the
hash of the datum copied from a request, the time of generation, and some
auxiliary information.
TS_TST_INFO_free()
frees token.
TS_ACCURACY_new()
allocates and initializes an empty TS_ACCURACY object,
representing an ASN.1 Accuracy structure defined in
RFC 3161 section 2.4.2. It can be used inside a
TS_TST_INFO object and indicates the maximum error of
the time stated in the token.
TS_ACCURACY_free()
frees accuracy.
TS_MSG_IMPRINT_new()
allocates and initializes an empty TS_MSG_IMPRINT
object, representing an ASN.1 MessageImprint structure
defined in RFC 3161 section 2.4.1. It is used inside
TS_REQ and TS_RESP objects. It
specifies a hash algorithm and stores the hash value of the datum.
TS_MSG_IMPRINT_free()
frees imprint.
RETURN VALUES
TS_REQ_new(),
TS_RESP_new(),
TS_STATUS_INFO_new(),
TS_TST_INFO_new(),
TS_ACCURACY_new(), and
TS_MSG_IMPRINT_new() return the new
TS_REQ, TS_RESP,
TS_STATUS_INFO, TS_TST_INFO,
TS_ACCURACY, or TS_MSG_IMPRINT
object, respectively, or NULL if an error
occurred.
SEE ALSO
ACCESS_DESCRIPTION_new(3), ESS_SIGNING_CERT_new(3), X509_EXTENSION_new(3)
STANDARDS
RFC 3161: Internet X.509 Public Key Infrastructure Time-Stamp Protocol
Note that RFC 3161 has been updated by RFC 5816: ESSCertIDv2 Update for RFC 3161. That update allows using the Signing Certificate Attribute Definition Version 2 according to RFC 5035, but the current implementation only supports the Signing Certificate Attribute Definition Version 1 according to RFC 2634, and hence only supports RFC 3161, but not RFC 5816 functionality.
HISTORY
These functions first appeared in OpenSSL 1.0.0 and have been available since OpenBSD 4.9.