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| Content Provider | ACM Digital Library |
|---|---|
| Author | Fujioka, Atsushi Yoneyama, Kazuki Suzuki, Koutarou Xagawa, Keita |
| Abstract | This paper discusses how to realize practical post-quantum authenticated key exchange (AKE) with strong security, i.e., $CK^{+}$ security (Krawczyk, CRYPTO 2005). It is known that strongly secure post-quantum AKE protocols exist on a generic construction from IND-CCA secure key encapsulation mechanisms (KEMs) in the standard model. However, when it is instantiated with existing IND-CCA secure post-quantum KEMs, resultant AKE protocols are far from practical in communication complexity. We propose a generic construction of AKE protocols from OW-CCA secure KEMs and prove $CK^{+}$ security of the protocols in the random oracle model. We exploit the random oracle and instantiate AKE protocols from various assumptions; DDH, gap DH, CDH, factoring, RSA, DCR, (ring-)LWE, McEliece one-way, NTRU one-way, subset sum, multi-variate quadratic systems, and more. For example, communication costs of our lattice-based scheme is approximately 14 times lower than the previous instantiation (for 128-bit security). Also, in the case of code-based scheme, it is approximately 25 times lower. |
| Starting Page | 83 |
| Ending Page | 94 |
| Page Count | 12 |
| File Format | |
| ISBN | 9781450317672 |
| DOI | 10.1145/2484313.2484323 |
| Language | English |
| Publisher | Association for Computing Machinery (ACM) |
| Publisher Date | 2013-05-08 |
| Publisher Place | New York |
| Access Restriction | Subscribed |
| Subject Keyword | Post-quantum cryptography Random oracle model Authenticated key exchange Ck+ model Ring-lwe assumption Key encapsulation mechanism |
| Content Type | Text |
| Resource Type | Article |
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