Welcome to the resource topic for 2000/065
Title:
How to Encrypt Long Messages without Large Size Symmetric/Asymmetric Encryption Schemes
Authors: Masashi Mitomo, Kaoru Kurosawa
Abstract:Suppose that we wish to encrypt long messages
with small overhead by a public key encryption scheme
which is secure against adaptive chosen ciphertext attack (IND-CCA2).
Then the previous schemes require either
a large size one-way trapdoor permutation (OAEP)
or both a large size symmetric encryption scheme
and a small size asymmetric encryption scheme (hybrid encryption).
In this paper,
we show a scheme which requires only a small size
asymmetric encryption scheme satisfying IND-CCA2
for our purpose.
Therefore, the proposed scheme is very efficient.
A hash function and
a psuedorandom bit generator are used as random oracles.
ePrint: https://eprint.iacr.org/2000/065
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