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We propose a new aggregate signature scheme from bilinear pairings. It requires constant pairing operations in the verification and the size of aggregate signature is independent of the number of signers. In the public key infrastructure (PKI) setting, it is the first aggregate signature scheme with these properties. Hence, it is very practical in the(More)
The idea of signcryption is to provide a method to encrypt and sign data together, so it is more efficient than using an encryption scheme combined with a signature scheme. We present an identity-based signcryption solution, which is one of the most efficient, provably-secure schemes proposed to date. Our scheme admits provable security in the random oracle(More)
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