The aim of these conferences is to bring together the French scientific community whose research topics are related to coding and cryptography.

These conferences are organized by the C2 (coding and cryptography) working group of the GDR IFM and GDR Sécurité. They follow on from previous conferences held in Pornichet in 2025, Najac in 2023, Hendaye in 2022,  online in 2020, in Aussois in 2018, in La Bresse in 2017, in La Londe-les-Maures in 2015, in Les Sept Laux in 2014, in Dinard in 2012, in Saint-Pierre d'Oléron in 2011, in Fréjus in 2009, in Carcans in 2008, in Eymoutiers in 2006, in Aussois in 2005, at CIRM in 2002, in Batz-sur-Mer in 1999, in Asnelles-sur-Mer in 1998, and in Nantes in 1996.

The journées C2 will take place from Monday, March 30 to Friday, April 3 on the Opal coast.

Participants will be welcomed from the evening of Sunday, March 29.