Forwardsecure id based digital signature scheme with forward. Irwin3 september 8, 2003 abstract forwardsecure signatures are used to defeat signature forgeries in cases of key exposure. A new secure forward digital signatures based on forecasting and. We propose a new forwardsecure digital signature scheme, with much shorter keys than those in the scheme. Forwardsecure signature schemes, rst proposed by anderson in and97 and formalized by bellare and miner in bm99, are intended to address this limitation.
Hence, a signature forgery for time period 0 is considered as a valid one. A new forwardsecure digital signature scheme computer science. Forwardsecure signature schemes address the key exposure problem, in which all previously generated signatures are still considered to be valid even. Group signature schemes can be used as a basic building block for many security applications such as electronic banking systems and electronic voting. Namely, the goal of a forwardsecure signature scheme is to preserve. A digital signature is a mathematical scheme for verifying the authenticity of digital messages or. Cryptography that remains secure in the presence of an adversary with access. Its signature size is reduced to less than 25% compared to the best provably secure hash based signature scheme. We define its notion and show the realization by providing a construction and its security proof in the standard model based on the bdhi assumption without random oracles. Forwardsecure signature can protect the security of signatures pertaining to previous periods even if the current secret key is exposed. Next, we propose a new algorithm for digital signature based on ecdsa. An improved and efficient rsa based certificateless signature. The affinity propagation ap clustering algorithm has re.
Then we propose a new signature algorithm immune to all fault attacks. Miner, a forwardsecure digital signature scheme, advances in cryptologycrypto 99 proceedings, lecture notes in computer science vol. We provide a construction that has performance characteristics comparable with the best existing forwardsecure signatures. Forwardsecure digital signatures, initially proposed by anderson in ccs 97 and formalized by bellare and miner in crypto 99, are signature schemes which enjoy the additional guarantee that a compromise of the secret key at some point in time does not help forge signatures. We propose a new forwardsecure digital signature scheme, with much shorter keys than those in the scheme of 2. Digital signature scheme article about digital signature. Reyzin, a new forwardsecure digital signature scheme, a. Moving forward, we now elaborate on the definition of kems and their security notions.
Pdf a new digital signature scheme secure against fault attacks. Pdf as short message service sms is now widely used as business tool, its security has become a major concern for business organizations and. Practical forward secure signatures using minimal security. However, current forward secure identity based digital signature schemes only focus on forward secrecy of user private keys. The forwarddiffsig scheme for multicast authentication. As in ordinary signatureschemes,however,thereisonlyonepublickey,whichremainsthesame through all the time periods. Forwardsecure scheme it is categorized in schemes with increased security. Abstract this paper proposes a signature scheme where the signatures are generated by the cooperation of a number of people from a given group of senders and the signatures. Namely, the goal of a forward secure signature scheme is to preserve the validity of past signatures even if the current secret key has been compromised. We improve the bellareminer crypto 99 construction of signature schemes with forward security in the random oracle model. Based on the definition of tamper evidence, the authors define a new notion of tamper evidence forward secure signature scheme tefsig, and propose a general method to build a tefsig scheme. Pdf new forwardsecure signature scheme with untrusted. One forwardsecure signature scheme using bilinear maps and.
A forwardsecure threshold signature scheme based on. Forward secure signature schemes, rst proposed by anderson in and97 and formalized by bellare and miner in bm99, are intended to address this limitation. Full text of advances in cryptology asiacrypt 2016 see other formats. This can be useful to mitigate the damage caused by key exposure without requiring distribution of. What businesses need to know about enotarization nna. Group signature schemes with forward secure properties. Forwardsecure signature schemes using bilinear maps were proposed in,, which. Forward secure signatures with untrusted update allow us to add forward security to signatures, while still keeping passwords as a second factor of security. If the group signature scheme were without the forwardsecure property, obviously the group signature b obtained on document m would be rendered invalid and b would need to obtain a new signature on document m. Two important issues forward security and efficient revocation have not been addressed by prior schemes. Forwardsecure signatures with optimal signing and verifying. Forwardsecure multisignature and blind signature schemes.
This paper proposes a forward secure id based digital signature scheme with forward secure private key generator. By using a direct proof technique not used for forwardsecure schemes before, we are able to provide better security bounds for the original construction as well as for our scheme. In chapter 3, we examine hashbased digital signature schemes. Forwardsecure id based digital signature scheme with.
Pdf digital signaturesquantum states approach researchgate. We present a new forwardsecure signature scheme, called kreus, with several advantages. Logfas is a forwardsecure and appendonly signature fsa scheme, which combines. In this paper, based on the forward secure and certificateless signature scheme in the random oracle model, we propose the first latticebased certificateless signature scheme which is provably secure in the standard model to eliminate key exposure and key escrow problems without introducing a third party proxy. Our scheme has significantly shorter keys and is, therefore, more practical.
The proposed dsa scheme is designed to signature by using. Ordinary digital signatures have an inherent weakness. Krawczyk presented an extremely simple construction of forwardsecure signatures based on any regular signature scheme. Simple forwardsecure signatures from any signature scheme. Definition a forwardsecure digital signature scheme is, first of all, a keyevolving digital. Informally, forwardsecure signature schemes can guarantee the unforgeability of the past signatures, even if the current secret signing key is exposed. Aggregate signature, forwardsecurity, key evolution, hash function, digital.
This paper constructs yet another forward secure signature scheme using bilinear maps, which has a nice average performance, that is, there are no cost parameters having a complexity more than ologt. In boyin yang, editor, postquantum cryptography, volume 7071 of lecture notes in. Practical forward secure signatures using minimal security assumptions. A digital signature with threshold generation and verification sunder lal and manoj kumar. Pdf secure encryption with digital signature approach for short. On the security of latticebased signature schemes in. A forwardsecure digital signature scheme springerlink. In particular we extend the group signature scheme proposed by ateniese et al. A new forward secure signature scheme using bilinear maps fei hu1 chwanhwa wu2 j. In a forwardsecure signature scheme, the exposure of current secret key doesnt affect the security of signatures generated in previous periods. New forwardsecure signature schemes with untrusted update. At the same time, it offers also protection against key exposure as it exploits optisum, our optimized implementation of the isum forwardsecure signature scheme. Intuitively, in this new model, the forger first conducts an adaptive chosen.
Forward secure signature can protect the security of signatures pertaining to previous periods even if the current secret key is exposed. In this paper, we capture forward secrecy of both pkgs master secret and user private keys, and formalize a new definition of forwardsecure id based signature schemes. Specifically, we use an algorithm that computes the forward. Namely, the goal of a forwardsecure signature scheme. Our constructions use ideas from the work of abdalla et al. By using a direct proof technique not used for forwardsecure schemes before, we are able to provide better security bounds for the original. Practical postquantum cryptography joost rijneveld.
A new forward secure digital signature scheme seminar topic explains about concept of improving security issues when cryptography key is known to hackers. New forwardsecure signature scheme with untrusted update. Sms is a storeandforward, easy to use, popular, and low. We construct the first forwardsecure group signature schemes. Pdf forwardsecure signatures can be used to limit the damage of secret key exposure for digital signatures. We describe a digital signature scheme in which the public key is fixed but the secret signing key is updated at regular intervals so as to provide a forward security property. Cryptography is mostly used encryption and decryption methods used in communication. A forwardsecure digital signature scheme 4,6,9,15,16 is a method for creating digital signatures signed with secret keys changing with time periods, all of which can. Introduction schemes which provide this functionality are called digital signature schemes. Finegrained forwardsecure signature schemes without. In this model, the signature key evolves with time and it is computationally infeasible for an adversary to forge a signature. It is also a guarantee that information has not been modified, as if it were protected by a tamperproof seal that is broken if the contents were altered. We call this new signature scheme as elgamallike signature scheme.
How to construct a forward secure signature scheme with higher efficiency has been a hot topic in research for a long time 8. A digital signature scheme is secure if for every non uniform probabilistic polynomial time adversary, a. A new forwardsecure digital signature scheme springerlink. In order to integrate this primitive into standard security architectures, boyen et al.
In this paper, we present two forwardsecure signature schemes fss with untrusted update. A new forward secure digital signature scheme projects. Unfortunately, the current most frequently used digital signature schemes are categorized into the ordinary digital signature scheme. It is the rst provably forward secure and practical signature scheme with minimal security requirements. Digital signatures, identification schemes, forward security. Xmss a practical forward secure signature scheme based. In 2001, itkis and reyzin 9 proposed a forward secure. A new forward secure signature scheme 5 furthermore, we consider the time period starting at zero. In this paper a new forwardsecure digital signature scheme is presented, which is based on the use of bilinear maps recently. Forwardsecure signatures with fast key update springerlink. Jul 06, 2012 introduction to a new forward secure digital signature scheme. Efficient generic forwardsecure signatures with an. Forwardsecure signatures have been proposed to address this major shortcoming.
Identity based encryption with use of fragments in. Forward secure digital signature for electronic medical. Forward security for an elgamallike signature scheme. Digital signatures mit csail theory of computation. That is, even if the adversary is not allowed to get the base secret key, it can have access the signing oracle during zero period. Bilinear pairings advocated by boneh and franklin 9 could be used to construct forward secure signature schemes 12,14. This makes forward security an especially attractive improvement upon a distributed signature scheme. A group signature scheme allows a group member to sign messages anonymously on behalf of the group. How to construct forward secure singleserver, multi.
This paper proposes an efficient forwardsecure group certificate digital signature scheme that is based on shamirs t,n threshold scheme and schnorrs digital signature scheme to ensure. A new forwardsecure threshold digital signature scheme which based on multiplicative secret sharing is put forward in this paper. In 1997, anderson 6 first proposed the forward security theory. A digital signature scheme will have two components, a private signing algorithm which permits a user to securely sign a message and a public verification algorithm which permits anyone to verify that the signature. A digital signature scheme is secure if for every nonuniform probabilistic polynomial time adversary, a. Were upgrading the acm dl, and would like your input. Lmrs04 anna lysyanskaya, silvio micali, leonid reyzin, and hovav shacham. We propose a new forward secure digital signature scheme, with much shorter keys than those in the scheme of 2. Forwardsecure group signatures from lattices san ling, khoa nguyen, huaxiong wang, yanhong xu. This paper constructs yet another forwardsecure signature scheme. A forwardbackward secure signature scheme 2321 signature generation algorithm. They provided formal definitions of forwardsecure signature and presented practical solutions. Designing a forward secure threshold scheme would be an easy task if one could ignore e ciency issues.
Since then, a large number of forwardsecure signature schemes m. Latticebased forward secure and certificateless signature scheme. A new digital signature scheme secure against fault attacks. The signer generates the signature for the period j by the jth period secret key sj as follows. It has the most efficient key update of all known schemes.
368 1419 912 434 1044 47 497 362 1519 1299 1268 944 1515 656 658 203 612 987 432 261 1165 1478 83 1032 770 691 682 467 767