The 7th European Workshop on Public Key Services, Applications and Infrastructures (EuroPKI) was held in Crowne Plaza Athens City Hotel, Athens, Greece, 23-24 September 2010. EuroPKI was held in conjunction with 6th International Workshop on Security and Trust Management (STM2010) and 5th International Conference on Critical Information Infrastructure Security (CRITIS2010). There were about 20 participants in EuroPKI, and in total of these workshops, about 70 participants. In EuroPKI, many topics of PKI were presented, such as cryptographic schemes (e.g. Proxy Re-encryption, Secret Handshake, and so on), cryptographic protocols (e.g. IBE-based e-voting, Outsourcing data analysis using Searchable Encryption, and so on), and Applications of PKE (e.g. Mesh authentication by applying PKI and so on).