Lattice Signatures Without Trapdoors

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Provided by: CNRS
Topic: Security
Format: PDF
The versatility of lattice-based cryptography has elevated it to the status of a promising potential alternative to cryptography based on standard security assumptions such as factoring and discrete log. But before lattices can become a viable replacement for number-theoretic schemes, it is crucial to have efficient lattice-based constructions of the most ubiquitous cryptographic primitives in practical applications, which are arguably encryption schemes and digital signatures. On the encryption front, lattice-based schemes have been making a lot of progress with recent provably-secure schemes being almost as practical as (and actually looking quite similar to) the deployed NTRU encryption scheme, which in turn has many advantages over number theory-based schemes.
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