References in periodicals archive ?
Delerablee's scheme achieves IND-sID-CPA security, and the ciphertext length and private key size are constant.
Real] except that: (1) the challenge ciphertext is semi-functional.
pi]] except that the challenge ciphertext is a semi-functional encryption on a random element of [G.
If [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] is a normal ciphertext, and if [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] is a semi-functional ciphertext.
The message recovery and signature verification phase: Upon receiving the ciphertext (s, r, t), [U.
The signature conversion phase: Since the parameter c is obtained during the verification of the authenticated ciphertext, the recipient can easily reveal the converted signature (s, c) along with the message M in case of a later repudiation.
A CAE scheme is correct if the signer can generate a valid authenticated ciphertext and only the designated recipient is capable of decrypting and verifying it.
A CAE scheme satisfies the security requirement of message confidentiality if the resulted authenticated ciphertext is computationally indistinguishable even with respect to two candidate plaintexts.
ver], [epsilon]')-secure against adaptive chosen ciphertext attacks in the random oracle model if there exists no probabilistic polynomial-time algorithm B that can (t, [epsilon])-break the RSA problem, where
The cycle-walking technique is then used to insure that the ciphertext is in the appropriate range.
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