Identity Based Encryption Without Redundancy
作者： Benoît Libert , Jean-Jacques Quisquater
DOI: 10.1007/11496137_20
关键词:
摘要: This paper presents a first example of secure identity based encryption scheme (IBE) without redundancy in the sense Phan and Pointcheval. modification Boneh-Franklin IBE is an hybrid construction that proved to be (using proof techniques borrowed from those for KEM-DEM constructions) random oracle model under slightly stronger assumption than original turns out more efficient at decryption latter. A second contribution this work show how shorten ciphertexts recently proposed multiple-recipient scheme. Our latter spares about 1180 bits bandwidth point view as, somewhat surprisingly, redundancies are not needed although all elements ciphertext space reachable by mapping. shows public key schemes, may useless even when mapping surjection.
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