This book constitutes the thoroughly refereed post-conference proceedings of the 10th European Workshop, EuroPKI 2013, held in Egham, UK, in September 2013. The 11 revised full papers presented together with 1 invited talk were carefully selected from 20 submissions. The papers are organized in topical sections such as authorization and delegation, certificates management, cross certification, interoperability, key management, legal issues, long-time archiving, timestamping, trust management, trusted computing, ubiquitous scenarios, and Web services security.