A Free-Roaming Mobile Agent Security Protocol against Colluded Truncation Attack without trusted third party

2011 ◽  
Author(s):  
Fan Linna ◽  
Liu Jun
Keyword(s):  
Mobile Agent ◽  
Security Protocol ◽  
Third Party ◽  
Trusted Third Party ◽  
Mobile Agent Security

scholarly journals Data Security Protocol with Blind Factor in Cloud Environment

Information ◽  
2021 ◽  
Vol 12 (9) ◽  
pp. 340
Author(s):  
Ping Zhang ◽  
Huanhuan Chi ◽  
Jiechang Wang ◽  
Youlin Shang
Keyword(s):  
Data Security ◽  
Security Protocol ◽  
Third Party ◽  
Cloud Environment ◽  
Security Threat ◽  
Trusted Third Party ◽  
Traditional System ◽  
User Data ◽  
Chosen Ciphertext Attack ◽  
Positive Results

Compared with the traditional system, cloud storage users have no direct control over their data, so users are most concerned about security for their data stored in the cloud. One security requirement is to resolve any threats from semi-trusted key third party managers. The proposed data security for cloud environment with semi-trusted third party (DaSCE) protocol has solved the security threat of key managers to some extent but has not achieved positive results. Based on this, this paper proposes a semi-trusted third-party data security protocol (ADSS), which can effectively remove this security threat by adding time stamp and blind factor to prevent key managers and intermediaries from intercepting and decrypting user data. Moreover, the ADSS protocol is proved to provide indistinguishable security under a chosen ciphertext attack. Finally, the performance evaluation and simulation of the protocol show that the ADSS security is greater than DaSCE, and the amount of time needed is lower than DaSCE.

scholarly journals Employ a Mobile Agent for Making a Payment

2008 ◽  
Vol 4 (1) ◽  
pp. 51-68 ◽  
Author(s):  
Yan Wang ◽  
Duncan S. Wong ◽  
Huaxiong Wang
Keyword(s):  
Mobile Agent ◽  
Third Party ◽  
Trusted Third Party ◽  
Payment Protocol ◽  
Security Properties

The mobile agent paradigm offers flexibility and autonomy to e-commerce applications. But it is challenging to employ a mobile agent to make a payment due to the security consideration. In this paper, we propose a new agent-assisted secure payment protocol, which is based on SET payment protocol and aims at enabling the dispatched consumer-agent to autonomously sign contracts and make the payment on behalf of the cardholder after having found the best merchant, without the possibility of disclosing any secret to any participant. This is realized by adopting the Signature-Share scheme, and employing a Trusted Third Party (TTP). In the proposed protocol, the principle that each participant knows what is strictly necessary for his/her role is followed as in SET. In addition, mechanisms have been devised for preventing and detecting double payment, overspending and overpayment attacks. Finally the security properties of the proposed protocol are studied analytically. In comparison with other existing models, the proposed protocol is more efficient and can detect more attacks.

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