Abstract: Multi Identity SinglcKcy Decryption ( MISKD) scheme is a variant of Identity-Based Encryption(IBE) where a private decryption key can map multiple public keys (identities). More to decrypt multiple ciphertexts encrypted with different public keys. Based on exactly, a single private key can be used the bilinear pairings, the MISKI)scheme was presented and was provably secure in the standard model. The proposed scheme was proven secure against indistinguishably in adaptively chosen ciphertext and identity under the decision q-TBDHE assumption.

Key words: Multi-identity single-key decryption,Identity-based encryption,Standard model,Bilinear pairings