Endorsed E-cash

被引：36
作者：
Camenisch, Jan [1 ]
Lysyanskaya, Anna [2 ]
Meyerovich, Mira [2 ]
机构：
[1] IBM Corp, Zurich, Switzerland
[2] Brown Univ, Providence, RI 02912 USA
来源：
2007 IEEE SYMPOSIUM ON SECURITY AND PRIVACY, PROCEEDINGS | 2007年
关键词：
E-cash; digital signatures; fair exchange; threshold cryptography;
D O I：
10.1109/SP.2007.15
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
An electronic cash (e-cash) scheme lets a user withdraw money from a bank and then spend it anonymously. E-cash can be used only if it can be securely and fairly exchanged for electronic goods or services. In this paper, we introduce and realize endorsed e-cash. An endorsed e-coin consists of a lightweight endorsement x and the rest of the coin which is meaningless without x. We reduce the Problem of exchanging e-cash to that of exchanging endorsements. We demonstrate the usefulness of endorsed e-cash by exhibiting simple and efficient solutions to two important problems: (1) optimistic and unlinkable fair exchange of e-cash for digital goods and services; and (2) onion routing with incentives and accountability for the routers. Finally, we show how to represent a set of n endorsements using just one endorsement; this means that the complexity of the fair exchange protocol for n coins is the same as for one coin, making e-cash all the more scalable and suitable for applications. Our fair exchange of multiple e-coins protocol can be applied to fair exchanges of (almost) any secrets.
引用
收藏
页码：101 / +
页数：5
相关论文
共 43 条
  • [1] Acquisti A, 2003, LECT NOTES COMPUT SC, V2742, P84
  • [2] [Anonymous], 1994, Advances in Cryptography EUROCRYPT Lecture Notes in Computer Science
  • [3] [Anonymous], 1995, LNCS, DOI DOI 10.1007/3-540-49264-X17
  • [4] [Anonymous], LNCS
  • [5] Optimistic fair exchange of digital signatures
    Asokan, N
    Shoup, V
    Waidner, M
    [J]. IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, 2000, 18 (04) : 593 - 610
  • [6] Asokan N, 1997, P 4 ACM C COMP COMM, P6
  • [7] Bellare M, 2002, LECT NOTES COMPUT SC, V2442, P162
  • [8] Boneh D, 2004, LECT NOTES COMPUT SC, V3027, P223
  • [9] Boneh D., 2001, LNCS, P514, DOI [DOI 10.1007/3-540-45682-1_30, DOI 10.1007/3-540-45682-130]
  • [10] BRANDS S, 1993, UNPUB UNTRACEABLE OF
12345