ECC 2006 will be the 10th in a series of annual workshops dedicated to the study of elliptic curve cryptography and related areas. Over the past years the ECC conference series has broadened its scope beyond elliptic curve-based cryptography and now covers a wide range of areas within modern cryptography. For instance, past ECC conferences included presentations on hyperelliptic curve cryptography, pairing-based cryptography, quantum key distribution, AES, implementation issues, and deployments (e.g., cryptography for travel documents). At the same time ECC continues to be the premier conference on elliptic curve cryptography. It is hoped that ECC 2006 will further our mission of encouraging and stimulating research on the security and implementation of elliptic curve cryptosystems and related areas, and encouraging collaboration between mathematicians, computer scientists and engineers in the academic, industry and government sectors. As with past ECC conferences, there will be about 15 invited lectures (and no contributed talks) delivered by internationally leading experts. There will be both state-of-the-art survey lectures as well as lectures on latest research developments.