Table Of Content

Introduction Descriptionoftheattack Conclusion Why One Should Also Secure RSA Public Key Elements Eric Brier, Benoˆıt Chevallier-Mames, Mathieu Ciet and Christophe Clavier Gemalto,SecurityLabs CHES 2006, Yokohama - October 13, 2006 EricBrier,BenoˆıtChevallier-Mames, MathieuCietandChristopheClavier CHES2006,Yokohama Introduction Descriptionoftheattack Conclusion Outline 1 Introduction Previous work Our attack The threat model 2 Description of the attack Common Principle The bias based variant The collision based variant The full consistency exploitation variant 3 Conclusion Some interesting properties Counter-measures Open problems EricBrier,BenoˆıtChevallier-Mames, MathieuCietandChristopheClavier CHES2006,Yokohama Introduction Previouswork Descriptionoftheattack Ourattack Conclusion Thethreatmodel Outline 1 Introduction Previous work Our attack The threat model 2 Description of the attack Common Principle The bias based variant The collision based variant The full consistency exploitation variant 3 Conclusion Some interesting properties Counter-measures Open problems EricBrier,BenoˆıtChevallier-Mames, MathieuCietandChristopheClavier CHES2006,Yokohama Motivation It is usualy considered less important to secure public parameters than private ones Introduction Previouswork Descriptionoftheattack Ourattack Conclusion Thethreatmodel What is it about ? Fault analysis on public key cryptosystems by corrupting the value of public parameters EricBrier,BenoˆıtChevallier-Mames, MathieuCietandChristopheClavier CHES2006,Yokohama Introduction Previouswork Descriptionoftheattack Ourattack Conclusion Thethreatmodel What is it about ? Fault analysis on public key cryptosystems by corrupting the value of public parameters Motivation It is usualy considered less important to secure public parameters than private ones EricBrier,BenoˆıtChevallier-Mames, MathieuCietandChristopheClavier CHES2006,Yokohama Theseworksallowachosenmessageforgedsignaturetobeaccepted(e.g. maliciousapplet),but... Donotrevealthesigner’sRSAkey Relyonsomespecificfaultmodel Principle: alterpublicparametersofthecurvetomaketheDLbasepoint tobeofsmallorder. OnauthenticatedcomputingandRSA-basedauthentication[Sei05], ACM-CCS2005 IsitwisetopublishyourPublicRSAKeys? [GS06],FDTC2006 DifferentialFaultAttacksonEllipticCurveCryptosystems[BMV00],Crypto 2000 EllipticCurveCryptosystemsinthePresenceofPermanentandTransient Faults[CJ05],DesignsCodesandCryptography,2005 RSA Introduction Previouswork Descriptionoftheattack Ourattack Conclusion Thethreatmodel Previous work Elliptic Curve Cryptosystems EricBrier,BenoˆıtChevallier-Mames, MathieuCietandChristopheClavier CHES2006,Yokohama Theseworksallowachosenmessageforgedsignaturetobeaccepted(e.g. maliciousapplet),but... Donotrevealthesigner’sRSAkey Relyonsomespecificfaultmodel Principle: alterpublicparametersofthecurvetomaketheDLbasepoint tobeofsmallorder. OnauthenticatedcomputingandRSA-basedauthentication[Sei05], ACM-CCS2005 IsitwisetopublishyourPublicRSAKeys? [GS06],FDTC2006 EllipticCurveCryptosystemsinthePresenceofPermanentandTransient Faults[CJ05],DesignsCodesandCryptography,2005 RSA Introduction Previouswork Descriptionoftheattack Ourattack Conclusion Thethreatmodel Previous work Elliptic Curve Cryptosystems DifferentialFaultAttacksonEllipticCurveCryptosystems[BMV00],Crypto 2000 EricBrier,BenoˆıtChevallier-Mames, MathieuCietandChristopheClavier CHES2006,Yokohama Theseworksallowachosenmessageforgedsignaturetobeaccepted(e.g. maliciousapplet),but... Donotrevealthesigner’sRSAkey Relyonsomespecificfaultmodel OnauthenticatedcomputingandRSA-basedauthentication[Sei05], ACM-CCS2005 IsitwisetopublishyourPublicRSAKeys? [GS06],FDTC2006 Principle: alterpublicparametersofthecurvetomaketheDLbasepoint tobeofsmallorder. RSA Introduction Previouswork Descriptionoftheattack Ourattack Conclusion Thethreatmodel Previous work Elliptic Curve Cryptosystems DifferentialFaultAttacksonEllipticCurveCryptosystems[BMV00],Crypto 2000 EllipticCurveCryptosystemsinthePresenceofPermanentandTransient Faults[CJ05],DesignsCodesandCryptography,2005 EricBrier,BenoˆıtChevallier-Mames, MathieuCietandChristopheClavier CHES2006,Yokohama Theseworksallowachosenmessageforgedsignaturetobeaccepted(e.g. maliciousapplet),but... Donotrevealthesigner’sRSAkey Relyonsomespecificfaultmodel OnauthenticatedcomputingandRSA-basedauthentication[Sei05], ACM-CCS2005 IsitwisetopublishyourPublicRSAKeys? [GS06],FDTC2006 RSA Introduction Previouswork Descriptionoftheattack Ourattack Conclusion Thethreatmodel Previous work Elliptic Curve Cryptosystems DifferentialFaultAttacksonEllipticCurveCryptosystems[BMV00],Crypto 2000 EllipticCurveCryptosystemsinthePresenceofPermanentandTransient Faults[CJ05],DesignsCodesandCryptography,2005 Principle: alterpublicparametersofthecurvetomaketheDLbasepoint tobeofsmallorder. EricBrier,BenoˆıtChevallier-Mames, MathieuCietandChristopheClavier CHES2006,Yokohama Theseworksallowachosenmessageforgedsignaturetobeaccepted(e.g. maliciousapplet),but... Donotrevealthesigner’sRSAkey Relyonsomespecificfaultmodel OnauthenticatedcomputingandRSA-basedauthentication[Sei05], ACM-CCS2005 IsitwisetopublishyourPublicRSAKeys? [GS06],FDTC2006 Introduction Previouswork Descriptionoftheattack Ourattack Conclusion Thethreatmodel Previous work Elliptic Curve Cryptosystems DifferentialFaultAttacksonEllipticCurveCryptosystems[BMV00],Crypto 2000 EllipticCurveCryptosystemsinthePresenceofPermanentandTransient Faults[CJ05],DesignsCodesandCryptography,2005 Principle: alterpublicparametersofthecurvetomaketheDLbasepoint tobeofsmallorder. RSA EricBrier,BenoˆıtChevallier-Mames, MathieuCietandChristopheClavier CHES2006,Yokohama

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Why One Should Also Secure RSA Public Key Elements. Eric Brier, Benoıt Chevallier-Mames,. Mathieu Ciet and Christophe Clavier. Gemalto, Security

Why One Should Also Secure RSA Public Key Elements PDF

115 Pages·2006·1.4 MB·English

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Why One Should Also Secure RSA Public Key Elements. Eric Brier, Benoıt Chevallier-Mames,. Mathieu Ciet and Christophe Clavier. Gemalto, Security

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