Dear all, This code is very alpha, and intended to be developed fast. The aim of this code is to authenticate signed image lists to facilitate sharing of VM's across HTC sites for high energy physics. The code may be come more universal. Contributors. ~~~~~~~~~~~~~ Below is a list of contributors. If you help in this project please add your name. Owen Synge : owen.synge@desy.de Comments and feedback: David Groep : davidg@nikhef.nl How to verify. ~~~~~~~~~~~~~~ To get the DN and CA of your signature. openssl smime -in your_signed.msg \ -pk7out | openssl pkcs7 -print_certs To Verify the message against the CA certificate. openssl smime -in your_signed.msg \ -CAfile /etc/grid-security/certificates/dd4b34ea.0 \ -verify 1> /dev/null Whats developed. ~~~~~~~~~~~~~~~~ loadcanamespace.py is a simeple library developed to automate and simplify the authentication of signed messages. Thier is a small demo application for checking one or more signed messages. # python message_signed_validation.py -h Usage: message_signed_validation.py [options] Options: -h, --help show this help message and exit -m MESSAGE, --message=MESSAGE adds a message to be tested. -c CERTS_DIR, --certs-dir=CERTS_DIR Path of certificates dir