rfc3161

How do I securely sign data with a timestamp?

I would like to sign records in a database with a secure timestamp to prove they have not been altered by anyone after that date. What methods or services should I consider? RFC 3161? Does anyone provide that service /and/ have a reputable looking website? Is it possible to roll your own? ...

Timestamp server rfc3161 response token generation in Python

Hello! I'm trying to implement tsa server on python using twisted. Currently I'm using openssl binary to generate response, but this seems ugly to me, that's why I'm trying to figure out how to make response token with m2crypto. Thanks in advance for help! Maris. EDITED: how to achieve with m2crypto?: openssl ts -reply -section tsa_...