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has been cited by the following article:

• TITLE: Parallel Key Insulated ID-Based Public Key Cryptographic Primitive with Outsourced Equality Test

  AUTHORS: Seth Alornyo, Mustapha Adamu Mohammed, Bright Anibrika Selorm Kodzo, Pious Akwasi Sarpong, Michael Asante

  KEYWORDS: Identity-Based Encryption, Equality Test, Parallel Key-Insulated

  JOURNAL NAME: Journal of Computer and Communications, Vol.8 No.12, December 30, 2020

  ABSTRACT: Parallel key-insulation allows the use of multiple helper keys to protect private decryption keys during secret decryption key updates. This approach prevents decryption key leakage or exposure in insecure environment. We combined parallel key-insulated encryption (PKIE) with multiple helper keys and identity-based encryption with the equality test (IBE-ET) to obtain parallel key insulated ID-based public key encryption with outsourced equivalent test (PKI-IBPKE-ET). The scheme inherits the advantages of identity-based encryption (IBE), which simplifies certificate management for public key encryption. Furthermore, the parallel key-insulation with multiple helper mechanism was introduced in our scheme, which perfectly reduced the possibility of helper key exposure. Our scheme will enable the protection and periodic update of decryption keys in insecure environment. Our scheme achieves a weak indistinguishable identity chosen ciphertext (W-IND-ID-CCA) security in the random oracle model. Ultimately, it is observed that our scheme is feasible and practical through the experimental simulation and theoretical analysis.