This paper proposed an identity-based steganographic scheme, where a receiver\nwith certain authority can recover the secret message ready for him, but\ncannot detect the existence of other secret messages. The proposed scheme\ncreated several separate covert communication channels tagged by the Fuzzy\nIdentity-Based Encryption (FIBE) in one grayscale image. Then each channel\nis used to embed one secret message by using any content-aware steganographic\nscheme. Receivers with different attributes can extract different messages\ncorresponded. The Experiments illustrated the feasibility of this identity-\nbased secret message extraction. Further, the proposed scheme presents\nhigh undetectability against steganalytic attack launched by receivers without\ncorresponded attributes.
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