본문

서브메뉴

Codes & Lattices: Computational Complexity and Constructions
Codes & Lattices: Computational Complexity and Constructions
Codes & Lattices: Computational Complexity and Constructions

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20260202105236
ISBN  
9798291567876
DDC  
510
저자명  
Veliche Hostetler, Alexandra.
서명/저자  
Codes & Lattices: Computational Complexity and Constructions
발행사항  
[Sl] : University of Michigan, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
121 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-02, Section: A.
주기사항  
Advisor: Cheraghchi, Mahdi.
학위논문주기  
Thesis (Ph.D.)--University of Michigan, 2025.
초록/해제  
요약Linear codes and point lattices are two mathematical objects that play a fundamental role in many areas of computer science. In cryptography the computational hardness of problems for codes and lattices is used as a security assumption for most cryptographic schemes proposed to be post-quantum. Understanding the complexity of these problems, and how techniques for codes and lattices are related, is crucial for understanding the security of the corresponding cryptosystems. With this motivation, we explore both the computational complexity and algorithmic sides of coding problems and lattice problems.We study the computational complexity of two key problems relevant to cryptography: Learning With Errors (LWE) and Code Equivalence (CE). For problems like LWE, we introduce an alternative measure of computational hardness: the maximum success probability achievable by any probabilistic polynomial-time algorithm. This more accurately models the security goals of cryptosystems based on these problems. Under this new perspective, we study the worst-case to average-case hardness of LWE and prove a tight Turing reduction from the Bounded Distance Decoding (BDD) problem to both search and decision variants of LWE. Our reduction improves previous reductions by using only a few oracle calls and explicitly quantifying the loss in success probability. The CE problem has several variants, including Permutation (PCE), Signed Permutation (SPCE), and Linear (LCE) Code Equivalence. We prove polynomial-time Karp reductions from PCE to both LCE and SPCE. Along with a known Karp reduction from SPCE to the Lattice Isomorphism Problem (LIP), our second result implies a reduction from PCE to LIP.On the algorithmic side, we use lattices and Fourier analytic techniques to construct an algorithm that list-decodes Generalized Reed-Solomon (GRS) codes from worst-case or average-case errors over any ℓp (quasi)norm where 0 p = 2. This is based on the Guruswami-Sudan soft-decision decoding algorithm. Our algorithm generalizes previous algorithms for the ℓ2 and ℓ1 norms and achieves a better rate-(decoding) distance trade-off than these algorithms. We also discuss lattice list-decoding capacity bounds for general norms and construct lattices with high density - which achieve the Minkowski bound - using Construction D applied to random linear codes.
일반주제명  
Mathematics
일반주제명  
Computer science
일반주제명  
Information science
키워드  
Lattices
키워드  
Linear codes
키워드  
Learning With Errors
키워드  
Bounded Distance Decoding
키워드  
List decoding
기타저자  
University of Michigan Computer Science & Engineering
기본자료저록  
Dissertations Abstracts International. 87-02A.
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

 008260126s2025        us                              c    eng  d
■001000017359919
■00520260202105236
■006m          o    d                
■007cr#unu||||||||
■020    ▼a9798291567876
■035    ▼a(MiAaPQ)AAI32271947
■035    ▼a(MiAaPQ)umichrackham006230
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a510
■1001  ▼aVeliche  Hostetler,  Alexandra.
■24510▼aCodes  &  Lattices:  Computational  Complexity  and  Constructions
■260    ▼a[Sl]▼bUniversity  of  Michigan▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a121  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-02,  Section:  A.
■500    ▼aAdvisor:  Cheraghchi,  Mahdi.
■5021  ▼aThesis  (Ph.D.)--University  of  Michigan,  2025.
■520    ▼aLinear  codes  and  point  lattices  are  two  mathematical  objects  that  play  a  fundamental  role  in  many  areas  of  computer  science.  In  cryptography  the  computational  hardness  of  problems  for  codes  and  lattices  is  used  as  a  security  assumption  for  most  cryptographic  schemes  proposed  to  be  post-quantum.  Understanding  the  complexity  of  these  problems,  and  how  techniques  for  codes  and  lattices  are  related,  is  crucial  for  understanding  the  security  of  the  corresponding  cryptosystems.  With  this  motivation,  we  explore  both  the  computational  complexity  and  algorithmic  sides  of  coding  problems  and  lattice  problems.We  study  the  computational  complexity  of  two  key  problems  relevant  to  cryptography:  Learning  With  Errors  (LWE)  and  Code  Equivalence  (CE).  For  problems  like  LWE,  we  introduce  an  alternative  measure  of  computational  hardness:  the  maximum  success  probability  achievable  by  any  probabilistic  polynomial-time  algorithm.  This  more  accurately  models  the  security  goals  of  cryptosystems  based  on  these  problems.  Under  this  new  perspective,  we  study  the  worst-case  to  average-case  hardness  of  LWE  and  prove  a  tight  Turing  reduction  from  the  Bounded  Distance  Decoding  (BDD)  problem  to  both  search  and  decision  variants  of  LWE.  Our  reduction  improves  previous  reductions  by  using  only  a  few  oracle  calls  and  explicitly  quantifying  the  loss  in  success  probability.  The  CE  problem  has  several  variants,  including  Permutation  (PCE),  Signed  Permutation  (SPCE),  and  Linear  (LCE)  Code  Equivalence.  We  prove  polynomial-time  Karp  reductions  from  PCE  to  both  LCE  and  SPCE.  Along  with  a  known  Karp  reduction  from  SPCE  to  the  Lattice  Isomorphism  Problem  (LIP),  our  second  result  implies  a  reduction  from  PCE  to  LIP.On  the  algorithmic  side,  we  use  lattices  and  Fourier  analytic  techniques  to  construct  an  algorithm  that  list-decodes  Generalized  Reed-Solomon  (GRS)  codes  from  worst-case  or  average-case  errors  over  any  ℓp  (quasi)norm  where  0    p  =  2.  This  is  based  on  the  Guruswami-Sudan  soft-decision  decoding  algorithm.  Our  algorithm  generalizes  previous  algorithms  for  the  ℓ2  and  ℓ1  norms  and  achieves  a  better  rate-(decoding)  distance  trade-off  than  these  algorithms.  We  also  discuss  lattice  list-decoding  capacity  bounds  for  general  norms  and  construct  lattices  with  high  density  -  which  achieve  the  Minkowski  bound  -  using  Construction  D  applied  to  random  linear  codes.
■590    ▼aSchool  code:  0127.
■650  4▼aMathematics
■650  4▼aComputer  science
■650  4▼aInformation  science
■653    ▼aLattices
■653    ▼aLinear  codes
■653    ▼aLearning  With  Errors
■653    ▼aBounded  Distance  Decoding
■653    ▼aList  decoding
■690    ▼a0984
■690    ▼a0405
■690    ▼a0723
■71020▼aUniversity  of  Michigan▼bComputer  Science  &  Engineering.
■7730  ▼tDissertations  Abstracts  International▼g87-02A.
■790    ▼a0127
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17359919▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

미리보기

내보내기

chatGPT토론

Ai 추천 관련 도서


    신착도서 더보기
    최근 3년간 통계입니다.

    소장정보

    • 예약
    • 소재불명신고
    • 나의폴더
    • 우선정리요청
    • 비도서대출신청
    • 야간 도서대출신청
    소장자료
    등록번호 청구기호 소장처 대출가능여부 대출정보
    TF15886 전자도서 대출가능 마이폴더 부재도서신고 비도서대출신청 야간 도서대출신청

    * 대출중인 자료에 한하여 예약이 가능합니다. 예약을 원하시면 예약버튼을 클릭하십시오.

    해당 도서를 다른 이용자가 함께 대출한 도서

    관련 인기도서

    로그인 후 이용 가능합니다.