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Forward-secure signatures with untrusted update

Proceedings of the 13th ACM conference on Computer and communications security, 2006
In most forward-secure signature constructions, a program that updates a user's private signing key must have full access to the private key. Unfortunately, these schemes are incompatible with several security architectures including Gnu Privacy Guard (GPG) and S/MIME, where the private key is encrypted under a user password as a "second factor" of ...
Xavier Boyen, Hovav Shacham, Emily Shen, Brent Waters   +3 more
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Forward-Secure Multi-signatures

2008
In many applications a document needs to be signed by more than one signer. When a signature depends on more than one signer we call it a multi-signature. Further, ordinary digital signatures have an inherent weakness: if the secret key is leaked, then all signatures, even the ones generated before the leak, are no longer trustworthy.
N. R. Sunitha, B. B. Amberker
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Remote Authentication with Forward Security

2006
Password authentication has been accepted as an easy-to-use solution in network environment to protect unauthorized access to a remote server. Although many schemes have been proposed, none of them can achieve survivability in case of compromise of a server.
Zhenchuan Chai, Zhenfu Cao, Rongxing Lu
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Forward secure searchable symmetric encryption

2017 12th International Conference for Internet Technology and Secured Transactions (ICITST), 2017
Data outsourcing to third party clouds poses numerous data security threats. Access by unauthorized users is one of the security threat to the outsourced data. Unauthorized access can be avoided by encrypting the data before outsourcing. However, encrypting data before outsourcing renders it unsearchable to the data owner. Searchable encryption schemes
Muhammad Saqib Niaz, Gunter Saake
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A Forward Secure Ring Signature Scheme

2008 International Conference on Intelligent Information Hiding and Multimedia Signal Processing, 2008
Exposure of secret keys is fatal to the security of a signature scheme. Digital signature with forward security is proposed in order to reduce the loss arisen by the exposure of secret keys, in which even the attacker obtains the current secret key of some user illegally, he still can not forge the signature of the past time period.
Wansu Bao, Yun Wei
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Forward-Security Under Continual Leakage

2018
Current signature and encryption schemes secure against continual leakage fail completely if the key in any time period is fully exposed. We suggest forward security as a second line of defense, so that in the event of full exposure of the current secret key, at least uses of keys prior to this remain secure, a big benefit in practice.
Mihir Bellare, Adam O'Neill, Igors Stepanovs   +2 more
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Forward-Secure Certificate-Based Encryption

2009 Fifth International Conference on Information Assurance and Security, 2009
Certificate-based encryption (CBE) is a new paradigm which overcomes the shortcomings of traditional public-key encryption (PKE) and identity based encryption (IBE). CBE provides an efficient implicit certificate mechanism to eliminate third-party queries for the certificate status and to simplify the certificate revocation problem in traditional PKI ...
Yang Lu 0001, Jiguo Li 0001
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Forward Secure Delay-Tolerant Networking

Proceedings of the 12th Workshop on Challenged Networks, 2017
Delay-Tolerant Networks exhibit highly asynchronous connections often routed over many mobile hops before reaching its intended destination. The Bundle Security Protocol has been standardized providing properties such as authenticity, integrity, and confidentiality of bundles using traditional Public-Key Cryptography.
Signe Rüsch, Dominik Schürmann, Rüdiger Kapitza, Lars C. Wolf   +3 more
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On the Security of a Group Signature Scheme with Forward Security

2004
A group signature scheme allows a group member of a given group to sign messages on behalf of the group in an anonymous and unlinkable way. In case of a dispute, however, a designated group manager can reveal the signer of a valid group signature. Based on Song’s forward-secure group signature schemes, Zhang, Wu, and Wang proposed a new group signature
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Optimistic fair exchange for secure forwarding

2007 Fourth Annual International Conference on Mobile and Ubiquitous Systems: Networking & Services (MobiQuitous), 2007
Several cooperation enforcement schemes based on rewarding mechanisms such as electronic cash or online credits have lately been proposed to prevent selfish behavior in ad-hoc networks. However, these schemes suffer from the lack of fairness guarantees or the reliance on costly mechanisms such as tamper- proof hardware or the requirement for trusted ...
Melek Önen, Abdullatif Shikfa, Refik Molva   +2 more
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