Attribute‐based ring signcryption scheme

Abstract

In this paper, we present attribute-based ring signcryption scheme, which realizes the concept of ring signcryption in the attribute-based encryption frame firstly. In our system, it allows a user to signcrypt a message by a set of attributes that are chosen without revealing its identity. In additional, we propose the security models and prove the confidentiality and unforgeability of our schemes. We also present the efficiency of our scheme by comparisons.

Secure sharing of Personal Health Records in cloud computing: Ciphertext-Policy Attribute-Based Signcryption

“…The overhead is less than the combination of two steps (Signature + Encryption). Gagné et al proposed the first threshold policy attribute-based signcryption in [21] which is followed by a number of other schemes [22,23,24,25,26]. In [21] the signing attributes are separated from encryption/decryption attributes so that the signing and decryption rights can be separated.…”

Secure and efficient data transmission in the Internet of Things

“…To overcome this weakness, Qi et al [26] and Sharma et al [27] respectively gave a new identity-based ring signcryption scheme that only needs four pairing operations for any group size. In 2013, Guo et al [28] realized the ring signcryption in the attribute-based setting.…”

“…It protects the privacy of the sender since the receiver knows that the ciphertext comes from a member of a ring, but doesn't know exactly who the sender is. Some ring signcryption scheme have been proposed [24][25][26][27][28][29]. In 2008, Li et al [24] proposed a ring signcryption scheme with key privacy.…”

“…In [24], both the sender and receiver belong to the PKI environment. In [25][26][27][28][29], both the sender and receiver belong to the IBC environment.…”

“…2. Different to homogenous ring signcryption [24][25][26][27][28][29], our IP-HRSC is heterogeneous since the sender group belong to the IBC environment and the receiver belong to the PKI environment. The heterogeneous characteristic is very suitable for the data transmission in the IoT.…”