In order to enable an iCal export link, your account needs to have an API key created. This key enables other applications to access data from within Indico even when you are neither using nor logged into the Indico system yourself with the link provided. Once created, you can manage your key at any time by going to 'My Profile' and looking under the tab entitled 'HTTP API'. Further information about HTTP API keys can be found in the Indico documentation.
Additionally to having an API key associated with your account, exporting private event information requires the usage of a persistent signature. This enables API URLs which do not expire after a few minutes so while the setting is active, anyone in possession of the link provided can access the information. Due to this, it is extremely important that you keep these links private and for your use only. If you think someone else may have acquired access to a link using this key in the future, you must immediately create a new key pair on the 'My Profile' page under the 'HTTP API' and update the iCalendar links afterwards.
Permanent link for public information only:
Permanent link for all public and protected information:
Linear Algebra for the Discrete Logarithm Problem using GPUs
U304 (Université de Toulon)
Université de Toulon
In the context of cryptanalysis, computing discrete logarithms in large cyclic groups using index-calculus-based methods, such as the number field sieve (NFS-DL) or the function field sieve (FFS), requires solving large sparse systems of linear equations modulo the group order. Most of the fast algorithms used to solve such systems -- e.g., the conjugate gradient or the Lanczos and Wiedemann algorithms -- iterate a product of the corresponding sparse matrix with a vector (SpMV). We investigate accelerating this central operation on NVIDIA GPUs. In this talk, we present a matrix format suitable to the sparsity and the specific computing model and how we use Residue Number System (RNS) arithmetic to accelerate modular operations.