PT Unknown AU Hofheinz, D Koch, J Striecks, C TI Identity-Based Encryption with (Almost) Tight Security in the Multi-instance, Multi-ciphertext Setting SE PKC 2015 : Public-Key Cryptography : 18th IACR International Conference on Practice and Theory in Public-Key Cryptography, Gaithersburg, Maryland, USA, 30th March - 1st April 2015. Ed.: J. Katz Public key cryptography - PKC 2015 ; 18th IACR International Conference on Practice and Theory in Public-Key Cryptography, Gaithersburg, MD, USA, March 30 - April 1, 2015 . Ed.: J. Katz PY 2015 BP 799 EP 822 VL 9020 DI 10.1007/978-3-662-46447-2 LA english ER