1,721,708 research outputs found
A weakness in Sun-Chen-Hwang’s three-party key agreement protocols using passwords ⋆
No full textRecently, Sun, Chen and Hwang [J. Syst. Software, 75 (2005), 63–68] have proposed two new three-party protocols, one for password-based authenticated key agreement and one for verifier-based authenticated key agreement. In this paper, we show that both of Sun-Chen-Hwang’s protocols are insecure against an active adversary who can intercept messages, start multiple sessions of a protocol, or otherwise control the communication in the network. Also, we present a simple solution to the security problem with the protocols
A weakness in Sun-Chen-Hwang's three-party key agreement protocols using passwords
No full textRecently, Sun, Chen and Hwang [J. Syst. Software, 75 (2005), 63--68] have proposed two new three-party protocols, one for password-based authenticated key agreement and one for verifier-based authenticated key agreement. In this paper, we show that both of Sun-Chen-Hwang's protocols are insecure against an active adversary who can intercept messages, start multiple sessions of a protocol, or otherwise control the communication in the network. Also, we present a simple solution to the security problem with the protocols
A weakness in Sun-Chen-Hwang\u27s three-party key agreement protocols using passwords
Full text linkRecently, Sun, Chen and Hwang [J. Syst. Software, 75 (2005),
63-68] have proposed two new three-party protocols, one for
password-based authenticated key agreement and one for
verifier-based authenticated key agreement. In this paper, we show
that both of Sun-Chen-Hwang\u27s protocols are insecure against an
active adversary who can intercept messages, start multiple
sessions of a protocol, or otherwise control the communication in
the network. Also, we present a simple solution to the security
problem with the protocols
Magnitude Effect in Intertemporal Allocation Tasks
Full text linkWe investigate how the intertemporal allocation of monetary rewards is influenced by the size of the total budget, with a particular interest in the channels of influence. We find a significant magnitude effect: the budget share allocated to the later date increases with the size of the budget. This effect does not depend on whether the sooner reward is paid in the present or in the future, implying that the factors which drive the present bias cannot account for the magnitude effect. At the aggregate level as well as at the individual level, we find magnitude effects both on the discount rate and on intertemporal substitutability (i.e. utility curvature). The latter effect is consistent with theories in which the degree of asset integration is increasing in the stake
Magnitude Effect in Intertemporal Allocation Tasks
No full textWe investigate how the intertemporal allocation of monetary rewards is influenced by the size of the total budget, with a particular interest in the channels of influence. We find a significant magnitude effect: the budget share allocated to the later date increases with the size of the budget. This effect does not depend on whether the sooner reward is paid in the present or in the future, implying that the factors which drive the present bias cannot account for the magnitude effect. At the aggregate level as well as at the individual level, we find magnitude effects both on the discount rate and on intertemporal substitutability (i.e. utility curvature). The latter effect is consistent with theories in which the degree of asset integration is increasing in the stake
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