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Characterizing overstretched NTRU attacks
lattice techniques overstretched NTRU subfield attack
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2018/6/27
Overstretched NTRU, an NTRU variant with a large modulus, has been used as a building block for several cryptographic schemes in recent years. Recently, two lattice subfield attacks and a subring atta...
Choosing Parameters for the Subfield Lattice Attack against overstretched NTRU
NTRU smaller modulus
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2017/10/9
Albrecht et al. at Crypto 2016 and Cheon et al. at ANTS 2016 independently presented a subfield attack on overstretched NTRU problem. Their idea is to map the public key down to the subfield (by norm ...
Cryptanalysis of the Overstretched NTRU Problem for General Modulus Polynomial
NTRU Ideal Lattice sub eld attack
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2017/6/1
The overstretched NTRU problem, which is the NTRU problem with super-polynomial size q in n, is one of the important security foundation of cryptosystems which are recently suggested. Albrecht et al. ...
A subfield lattice attack on overstretched NTRU assumptions: Cryptanalysis of some FHE and Graded Encoding Schemes
NTRU Cryptanalysis Multilinear Maps
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2016/2/23
We exploit the presence of a subfield to solve the NTRU problem for large moduli
q: norming-down the public key h to a subfield may lead to an easier lattice problem, and any
sufficiently good solut...