Yuh-Min Tseng and Jinn-Ke Jan. A novel ID-based group signature. In T. L. Hwang and A. K. Lenstra, editors, 1998 International Computer Symposium, Workshop on Cryptology and Information Security (Tainan, December 17--19, 1998), pp. 159--164.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....for each user a private key that the user should use when signing a message on behalf on the group. A user verifies a signature with the group public key that is usually constant and unique for the whole group (i.e. independent of the members) Many group signature schemes have been proposed [1, 3, 6, 8, 12]. However all of them are much less e#cient that regular signature schemes (such as DSA or RSA) Designing an e#cient group signature scheme is still an open research problem. In this paper we show that ID based signature schemes [7] can be used to implement an e#cient group signature scheme. Such ....

Y.M. Tseng and J.K. Jan, A novel id-based group signature, Workshop on Cryptology and Information Security, Tainan, pp. 159-164, 1998. University of Oradea, Department of Mathematics, Str. Armatei Romane 5, Oradea, Romania E-mail address: cpopescu@uoradea.ro

....and electronic voting protocols [8] where they enable to protect user s privacy. The state of the art is exemplified by the recent scheme of Camenisch and Michels [2] Following the previous work of [9] flawed in [6] and revised in [10] Tseng and Jan propose an ID based group signature scheme [12]. In [13] they also propose a group signature scheme based on the related notion of self certified public keys [4] In this paper, we show that their two schemes are universally forgeable, that is, anyone (not necessarily a group member) is able to produce a valid group signature on an arbitrary ....

....of this work was performed while the author was with the Dept of Electrical Engineering, Tamkang University, Tamsui, Taiwan 251, R.O.C. 2 Tseng Jan Group Signature Schemes In this section, we give a short description of the two Tseng Jan group signature schemes and refer to the original papers [12, 13] for more details. Both schemes involve four parties: a trusted authority, the group authority, the group members, and verifiers. The trusted authority acts as a third helper to setup the system parameters. The group authority selects the group public secret keys; he (jointly with the trusted ....

[Article contains additional citation context not shown here]

Yuh-Min Tseng and Jinn-Ke Jan. A novel ID-based group signature. In T. L. Hwang and A. K. Lenstra, editors, 1998 International Computer Symposium, Workshop on Cryptology and Information Security (Tainan, December 17--19, 1998), pp. 159--164.

....much ine#cient: the length of the group public key and signature are proportional to the size of the group; more precisely, the identity of each member must be included in the group public key. Furthermore, Mao and Lim [20] showed that the anonymity of the scheme was not guaranteed. Tseng and Jan [27] presented a novel ID based group scheme. However, it is universally forgeable [17] and not coalition resistant [16] Recently, the bilinear pairings, namely the Weil pairing and the Tate pairing of algebraic curves, have initiated some completely new fields in cryptography, making it possible to ....

Y. Tseng and J. Jan, A novel ID-based group signature, International computer symposium, workshop on cryptology and information security, pp.159-164, 1998.

....for each user a private key that the user should use when signing a message on behalf on the group. A user veri es a signature with the Group Public Key that is usually constant and unique for the whole group (i.e. independent of the members) Many group signature schemes have been proposed [6, 7, 8, 9]. However all of them are much less ecient that regular signature schemes (such as DSA or RSA) Designing an ecient group signature scheme is still an open research problem. In this paper we outline the similarities that exist between ID based signature and Group signature schemes. We also show ....

Y.-M. Tseng and J.-K. Jan, \A novel id-based group signature," Information Sciences, pp. 131-141, 1999.

....Stadler presented the rst group signature scheme whose public key and signatures have length independent of the number of group members of one group [2] but this isn t independent of the number of groups. Many group signature schemes have been presented [3] 7] 8] 12] 13] 14] 16] In [19], Tseng and Jan proposed a group signature scheme, but this was broken in [9] and [10] In [9] M. Joye, S. Kim and N. Lee showed that the Tseng Jan scheme is universally forgeable, that is, anyone is able to produce a valid group signature on an arbitrary message. In [10] M. Joye showed that the ....

....a valid group signature on an arbitrary message. In [10] M. Joye showed that the group signature scheme proposed by Tseng Jan is not coalition resistant: two group members can produce untraceable group signatures. In this paper we present a modi cation of the Tseng Jan group signature scheme [19]. Our scheme appears to be secure in comparation with the Tseng Jan group 2000 Mathematics Subject Classi cation. 94A60. 1998 CR Categories and Descriptors. D.4.6. Software] Operating Systems Security and Protection; 36 A MODIFICATION OF THE TSENG JAN GROUP SIGNATURE SCHEME 37 signature ....

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Y. Tseng, J. Jan, A novel ID-based group signature, In T.L. Hwang and A.K. Lenstra, editors,

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Yuh-Min Tseng and Jinn-Ke Jan. A novel ID-based group signature. In T. L. Hwang and A. K. Lenstra, editors, 1998 International Computer Symposium, Workshop on Cryptology and Information Security (Tainan, December 17--19, 1998), pp. 159--164.

No context found.

Yuh-Min Tseng and Jinn-Ke Jan. A novel ID-based group signature. In T. L. Hwang and A. K. Lenstra, editors, 1998 International Computer Symposium, Workshop on Cryptology and Information Security (Tainan, December 17--19, 1998), pp. 159--164.

No context found.

Y. Tseng and J. Jan. A novel ID-based group signature. In International computer symposium, workshop on cryptology and information security, pages 159--164, 1998.

No context found.

Yuh-Min Tseng and Jinn-Ke Jan. A novel ID-based group signature. In T. L. Hwang and A. K. Lenstra, editors, 1998 International Computer Symposium, Workshop on Cryptology and Information Security (Tainan, December 17--19, 1998), pp. 159--164.

No context found.

Yuh-Min Tseng and Jinn-Ke Jan. A novel ID-based group signature. In T. L. Hwang and A. K. Lenstra, editors, 1998 International Computer Symposium, Workshop on Cryptology and Information Security (Tainan, December 17--19, 1998), pp. 159--164.

No context found.

Y.-M. Tseng, and J.-K. Jan. A novel ID-based group signature. Information Sciences, 1999, 120: 131-141. Elsevier Science.

No context found.

Y.-M. Tseng, and J.-K. Jan. A novel ID-based group signature. In: T.L. Hwang and A.K. Lenstra, editors, 1998 International Computer Symposium, Workshop on Cryptology and Information Security, Tainan, 1998, pp. 159-164.

No context found.

Yuh-Min Tseng and Jinn-Ke Jan. A novel ID-based group signature. In T. L. Hwang and A. K. Lenstra, editors, 1998 International Computer Symposium, Workshop on Cryptology and Information Security (Tainan, December 17--19, 1998), pp. 159--164.

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