Dear all, The next GGF is only a week away, as usual with plenty of interesting sessions to attend. On top of that, there's the GridWorld Japan expo that may attract some of you as well. I would like to make some advertising for the security area session on Thursday morning (9am). Besides the usual formalia, we will get some thought-provoking ideas on the use of Identity-Based Cryptography in Grid Security, presented by Hoon Wei Lim. Abstract as follows: The majority of current security architectures for grid systems use public key infrastructure (PKI) to authenticate identities of grid members and to secure resource allocation to these members. Identity-based cryptography (IBC) has some attractive properties which seem to align well with the demands of grid computing, for example, it is certificate-free and uses small key sizes. More importantly, an entity's public key can be computed on-the-fly based on their identity. In this talk, we present the use of identity-based techniques to provide an alternative grid security architecture. Our proposal exploits some interesting properties of hierarchical identity-based cryptography (HIBC) to replicate security services provided by the grid security infrastructure (GSI) of the Globus Toolkit. Take care, and hope to see many of you next week! /Olle PS. Don't forget to read and make a statement on your support and/or criticism of the security-related documents that are currently in public comment!