Results 21 to 30 of about 27,398 (275)
Efficient and provably-secure certificateless sequential aggregate signature scheme [PDF]
Tongxin xuebao, 2022 Aiming at the problem that current schemes mostly let the latter signer to verify the multiple signatures of the previous signer, and the message is signed and then passed to the next signer, leading to the efficiency problem of long overall signature ...
Zhu WANG +5 more
doaj +4 more sources
Cryptanalysis of a certificateless aggregate signature scheme [PDF]
IACR Cryptol. ePrint Arch., 2016 Recently, Nie et al. proposed a certificateless aggregate signature scheme. In the standard security model considered in certificateless cryptography, we are dealing with two types of adversaries. In this paper, we show that Nie et al.'s scheme is insecure against the adversary of the first type. In other words, although they claimed that their ...
Pakniat, Nasrollah, Noroozi, Mahnaz
core +5 more sources
Forward Secure Lattice-Based Sequential Aggregate Signature Schemes in Stan-dard Model
Jisuanji kexue yu tansuo, 2021 In the forward secure sequential aggregate (FssAgg) signature scheme, the signer combines signatures generated in different intervals under different secret keys incrementally and sequentially in a layered “onion-like” fashion with the first signature ...
XIE Jia, HU Yupu, GAO Juntao, WANG Baocang, JIANG Mingming
doaj +1 more source
Aggregation Signature for Small Object Tracking [PDF]
IEEE Transactions on Image Processing, 2020 Small object tracking becomes an increasingly important task, which however has been largely unexplored in computer vision. The great challenges stem from the facts that: 1) small objects show extreme vague and variable appearances, and 2) they tend to be lost easier as compared to normal-sized ones due to the shaking of lens. In this paper, we propose
Chunlei Liu 0001 +6 more
openaire +4 more sources
Universal Signature Aggregators [PDF]
, 2015 We introduce the concept of universal signature aggregators. In a universal signature aggregator system, a third party, using a set of common reference parameters, can aggregate a collection of signatures produced from any set of signing algorithms (subject to a chosen length constraint) into one short signature whose length is independent of the ...
Susan Hohenberger +2 more
openaire +2 more sources
Practical Short Signature Batch Verification [PDF]
, 2009 In many applications, it is desirable to work with digital signatures that are short, and yet where many messages from different signers be verified very quickly. RSA signatures satisfy the latter condition, but are generally thousands of bits in length.
Pedersen, Michael Østergaard +7 more
core +1 more source
Unrestricted Aggregate Signatures [PDF]
, 2007 Secure use of the BGLS [1] aggregate signature schemes is restricted to the aggregation of distinct messages (for the basic scheme) or per-signer distinct messages (for the enhanced, prepend-public-key version of the scheme). We argue that these restrictions preclude interesting applications, make usage of the schemes error-prone and are generally ...
Mihir Bellare +2 more
openaire +2 more sources
Signature Bouquets: Immutability for Aggregated/Condensed Signatures [PDF]
, 2004 Database outsourcing is a popular industry trend which involves organizations delegating their data management needs to an external service provider. Since a service provider is almost never fully trusted, security and privacy of outsourced data are important concerns.
Einar Mykletun +2 more
openaire +2 more sources
Identity-Based Aggregate Signatures [PDF]
, 2006 An aggregate signature is a single short string that convinces any verifier that, for all 1 ≤ i ≤ n, signer Si signed message Mi, where the n signers and n messages may all be distinct. The main motivation of aggregate signatures is compactness. However, while the aggregate signature itself may be compact, aggregate signature verification might require
Craig Gentry, Zulfikar Ramzan
openaire +1 more source
Compact Aggregate Signature from Module-Lattices [PDF]
, 2023 We propose the first aggregate signature scheme such that: (1) its security is based on the standard lattice assumptions in the random oracle model; (2) the aggregate signature size is logarithmic; (3) it is not one-time; and (4) it supports non ...
Junji Shikata, Toi Tomita
core