Requesting timestamps from Rest PKI

You can use Rest PKI as an ICP-Brasil timestamp provider through the TSP protocol (Timestamp Protocol, RFC 3161) or the REST API.

To do this, follow the steps below to get an access token:

Then use one of the ways below to communicate with Rest PKI.

Communication through the Timestamp Protocol

Use these settings to communicate with Rest PKI over TSP:

Protocol: HTTPS
Method: POST
URL: https://pki.rest/tsp/a402df41-8559-47b2-a05c-be555bf66310
Authentication: by HTTP header as below:
- Authorization : Bearer <Rest PKI access token>

Use these settings to call the Rest PKI REST API:

URL: https://pki.rest/Api/TimestampPlans/a402df41-8559-47b2-a05c-be555bf66310/Issue
Method: POST
Request headers
- Authorization : Bearer <Rest PKI access token>
- Content-Type : application/json
Request
- algorithm : algorithm name (see the supported algorithms below)
- value : hash value to be stamped, Base64 encoded or
- hexValue : hash value to be stamped, encoded in hexadecimal (case insensitive)
Response
- encodedValue : timestamp, Base64 encoded
- info : information about the timestamp

Example request with SHA-256 algorithm and Base64 hash:

{
	"algorithm": "SHA256",
	"value": "L80RIvFw2jwpiObzFQN+tuEQQ4E9qnGeYYYd+4DrM8M="
}

Example request with SHA-1 algorithm and hash in hex:

{
	"algorithm": "SHA1",
	"hexValue": "3ade2832feafe081f246aa2fb89cb9c7929ac911"
}

Currently, the following algorithms are supported: