How to generate and send an RFC3161 timestamp with OpenSSL and curl

For me the blog is this odd mix of diary and technical notes, this time I guess the post is more of a technical note — here is a quick guide on how to generate RFC 3161 time-stamps using OpenSSL and curl.


1. Create the file you will want to timestamp


copy con inputfile.txt

This is my test file.



2. Generate a timestamp request


openssl ts -query -data inputfile.txt -cert -sha256 -no_nonce -out request.tsq


3. Send the request to your timestamp server


curl -k -H “Content-Type: application/timestamp-query” -H –data-binary @request.tsq “”  >inputfile.txt.tsr


4. Verify the timestamp response


openssl ts -reply -in inputfile.txt.tsr -text


This is going to give you some output that looks something like this:


Using configuration from C:\OpenSSL-Win64\bin\openssl.cfg

Status info:

Status: Granted.

Status description: unspecified

Failure info: unspecified

TST info:

Version: 1

Policy OID:

Hash Algorithm: sha256

Message data:

    0000 – 58 df 63 8c 5b bf ff ca-ad 13 c9 6e 93 96 cd 25   X.c.[……n…%

    0010 – 66 5e f1 eb ba 8e 7f 74-6d 65 04 3c 5d ea e4 35   f^…..tme.<]..5

Serial number: 0x2487F5EA8A5A085844ED68A8A7426E07E692E1BD

Time stamp: Sep 17 05:08:38 2013 GMT

Accuracy: unspecified

Ordering: no

Nonce: unspecified

TSA: DirName:/C=SG/O=GMO GlobalSign Pte Ltd/CN=GlobalSign TSA for Standard – G1


It’s that easy.

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