5,532 research outputs found
Unrestricted aggregate signatures
No full textsponsorship: Mihir Bellare was supported by NSF grants CNS-0524765, CNS-0627779, and a gift from Intel Corporation. Chanathip Namprempre was supported by the Thailand Research Fund. Gregory Neven is a Postdoctoral Fellow of the Research 422 M. Bellare, C. Namprempre, and G. Neven Foundation Flanders, and was supported in part by the Concerted Research Action Ambiorics 2005/11 of the Flemish Government and the European Commission through the IST Programme under Contract IST-2002-507932 ECRYPT. (NSF|CNS-0524765, NSF|CNS-0627779, Intel Corporation, Thailand Research Fund, Flemish Government, European Commission through the IST Programme|IST-2002-507932 ECRYPT)status: Publishe
Identity-Based Multi-Signatures from RSA
No full textsponsorship: Mihir Bellare was supported by NSF grant CNS-0524765, a gift from Intel Corporation, and NSF CyberTrust project CT-ISG: Cryptography for Computational Grids. Gregory Neven is a Postdoctoral Fellow of the Flemish Research Foundation (FWO Vlaanderen), and was supported in part by the Concerted Research Action (GOA) Ambiorics 2005/11 of the Flemish Government and in part by the European Commission through the IST Programme under Contract IST-2002-507932 ECRYPT. (NSF|CNS-0524765, NSF CyberTrust project "CT-ISG: Cryptography for Computational Grids", Concerted Research Action (GOA) Ambiorics of the Flemish Government|2005/11, European Commission through the IST Programme|IST-2002-507932)status: Publishe
Simulatable adaptive oblivious transfer
No full textsponsorship: The authors would like to thank Xavier Boyen, Christian Cachin, Anna Lysyanskaya,Benny Pinkas, Alon Rosen and the anonymous referees for their useful comments and discussions. Gregory Neven is a Postdoctoral Fellow of the Research Foundation Flanders (FWO-Vlaanderen). This work was supported in part by the European Commission through the IST Program under Contract IST-2002-507932 ECRYPT and Contract IST-2002-507591 PRIME. (European Commission through the IST|IST-2002-507932, European Commission through the IST|IST-2002-507591)status: Publishe
Generalized IBE in the exponent-inversion framework
No full textThe purpose of this chapter is to provide an abstraction for the class of Exponent-Inversion IBE exemplified by the [Bscr ][Bscr ]2 and [Sscr ][Kscr ] schemes, and, on the basis of that abstraction, to show that those schemes do support interesting and useful extensions such as HIBE and ABE. \ud
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Our results narrow, if not entirely close, the “flexibility gap” between the Exponent-Inversion and Commutative-Blinding IBE concepts
The Rhetoric of Landscape in Gregory of Nyssa’s Homilies on the Song of Songs
No full textThis is the author accepted manuscript. The final version is available from Brill via the ISBN in this recordAnalytical and Supporting Studies. Proceedings of the 13th International Colloquium on Gregory of Nyssa (Rome, 17-20 September 2014)Series:
Vigiliae Christianae, Supplements, Volume: 150In this paper I want to take you on a walk through a garden. It is, to be sure, an imaginary garden; nevertheless, it bears a significance which extends beyond itself. Some of this significance concerns words and texts: for as we shall see, the garden is, amongst other things, a ‘garden of rhetoric’. The garden in question appears in the Gregory of Nyssa’s Homilies on the Song of Songs.[...
Flexible IBE and beyond in the commutative-blinding framework
No full textThe cryptographic community has, of late, shown much inventiveness in the creation of powerful new IBE-like primitives that go beyond the basic IBE notion and extend it in many new directions. Virtually all of these “super-IBE” schemes rely on bilinear pairings for their implementation, which they tend to use in a surprisingly small number of different ways: three of them as of this writing. \ud
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What is interesting is that, among the three main frameworks that we know of so far, one has acted as a veritable magnet for the construction of many of these “generalized IBE” primitives, whereas the other two have not been nearly as fruitful in that respect. This refers to the Commutative Blinding framework defined by the Boneh-Boyen [Bscr ][Bscr ]1 IBE scheme from 2004. \ud
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The aim of this chapter is to try to shed some light on this approach's popularity, first by comparing its key properties with those of the competing frameworks, and then by providing a number of examples that illustrate how those properties have been used
An Evening with Richard Claxton “Dick” Gregory, Civil Rights Activist, Nutritionist, Comedian, and Author
No full textGregory, Richard Claxton “Dick” (Born, October 12, 1932, St. Louis, Mo.), African American comedian and civil rights activist whose social satire changed the way white Americans perceived African American comedians since he first performed in public. Gregory’s autobiography, Nigger, was published in 1963 prior to The assassination of President Kennedy, and became the number one best-selling book in America. Over the decades it has sold in excess of seven million copies. His choice for the title was explained in the forward, where Dick Gregory wrote a note to his mother. “Whenever you hear the word ‘Nigger’,” he said, “you’ll know their advertising my book.” In 1984 he founded Health Enterprises, Inc., a company that distributed weight loss products. In 1987 Gregory introduced the Slim-Safe Bahamian Diet, a powdered diet mix, which was immensely profitable. Economic losses caused in part by conflicts with his business partners led to his eviction from his home in 1992. Gregory remained active, however, and in 1996 returned to the stage in his critically acclaimed one-man show, Dick Gregory Live! The reviews of Gregory’s show compared him to the greatest stand-ups in the history of Broadway
“Judge Me Gently”: Reflections on the Religious Life of John Milton Gregory, 1822–1898
No full text John Milton Gregory is familiar to many Christian educators through his 19th-century publication, The Seven Laws of Teaching. For most readers of this important book, little is known about the author himself. This article explores the religious life and theological foundations of John Milton Gregory, who was both author of The Seven Laws of Teaching and founding president of the University of Illinois. Utilizing his spiritual diaries preserved in his daughter's biography of her father and archival sources from the University of Illinois, this essay offers a theological and spiritual understanding of this important historical figure. </jats:p
Floppy-Sized Group Signatures from Lattices
No full textWe present the first lattice-based group signature scheme whose cryptographic artifacts are of size small enough to be usable in practice: for a group of 225225 users, signatures take 910 kB and public keys are 501 kB. Our scheme builds upon two recently proposed lattice-based primitives: the verifiable encryption scheme by Lyubashevsky and Neven (Eurocrypt 2017) and the signature scheme by Boschini, Camenisch, and Neven (IACR ePrint 2017). To achieve such short signatures and keys, we first re-define verifiable encryption to allow one to encrypt a function of the witness, rather than the full witness. This definition enables more efficient realizations of verifiable encryption and is of independent interest. Second, to minimize the size of the signatures and public keys of our group signature scheme, we revisit the proof of knowledge of a signature and the proofs in the verifiable encryption scheme provided in the respective papers
David Gregory
No full textPhotograph - David Gregory, member of the Book Sub-Committee, part of the Town of Athabasca 75th Anniversary Committee, Athabasca, Alberta. The Book Sub Committee produced the book "Athabasca Landing: An Illustrated History
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