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[PDF] Top 20 On Composable Security for Digital Signatures

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On  Composable  Security  for  Digital  Signatures

On Composable Security for Digital Signatures

... idealized security guarantee, has often gone unnoticed and even lead to flaws in proofs of higher-level schemes based on ...making security analyses in the original and modified frameworks ... See full document

46

Reassessing  Security  of  Randomizable  Signatures

Reassessing Security of Randomizable Signatures

... A very attractive feature for a signature scheme in such a context is called randomizability. It allows anyone to derive, from a valid signature σ, a new version σ 0 on the same message. To our knowledge, in a bilinear ... See full document

17

On  the  Security  Notions  for  Homomorphic  Signatures

On the Security Notions for Homomorphic Signatures

... homomorphic signatures must be succinct, meaning that their size must be significantly smaller than the size of the input ...phic signatures are composable, in the sense that signatures ... See full document

19

On  the  Security  Loss  of  Unique  Signatures

On the Security Loss of Unique Signatures

... proving security of a unique signature scheme in the random oracle model; while such a reduction is not subject to Coron’s impossibility or variants thereof, it is still not linear-preserving (since its ... See full document

39

Stronger  Security  for  Sanitizable  Signatures

Stronger Security for Sanitizable Signatures

... Examples. Assume that a medical doctor signs a patient record with an SSS. The signed medical record can be sanitized by a server. It removes identifying information from the record before giving it to the accountant, ... See full document

18

Signatures of Viber Security Traffic

Signatures of Viber Security Traffic

... Viber is one of the popular mobile applications that allows its users to communicate securely through internet connectivity on 3/4 G or WiFi. It is a product of Rakuten Inc. (Rakuten, 1997 (accessed 9-November-2016)) and ... See full document

13

Simulatable  Channels:  Extended  Security  that  is  Universally  Composable   and  Easier  to  Prove

Simulatable Channels: Extended Security that is Universally Composable and Easier to Prove

... formulating security in various areas of cryptography. However security definitions based on simulation are generally harder to work with than game based definitions, often resulting in more complicated ... See full document

34

On  Black-Box  Complexity  of  Universally  Composable  Security  in  the  CRS  model

On Black-Box Complexity of Universally Composable Security in the CRS model

... stand-alone security, where a single set of parties run a single execution of the ...the security of most cryptographic protocols proven in the stand-alone setting does not remain intact if many instances ... See full document

47

A  Simpler  Variant  of  Universally  Composable  Security  for  Standard  Multiparty  Computation

A Simpler Variant of Universally Composable Security for Standard Multiparty Computation

... A more significant difference arises in the context of corruption. In the full UC model, an ideal functionality is modeled as a subroutine of the main protocol instance. Therefore, parties “send” messages/inputs to an ... See full document

42

Digital Signatures in the Legal Market:

Digital Signatures in the Legal Market:

... Electronic Signatures in Global and National Commerce Act of 2000) and UETA (the Uniform Electronic Transactions Act) as “an electronic sound, symbol, or ...electronic signatures cannot ensure signer ... See full document

7

Formal  Treatment  of  Privacy-Enhancing  Credential  Systems

Formal Treatment of Privacy-Enhancing Credential Systems

... Brands’ signatures [Bra99, PZ13] practical solutions for privacy-ABCs exist and are currently deployed in several pilot projects [ABC, IRM, Tea10, ...of security defi- nitions for PABC systems is still ... See full document

71

Composable  Security  in  the  Tamper  Proof  Hardware  Model  under  Minimal  Complexity

Composable Security in the Tamper Proof Hardware Model under Minimal Complexity

... shares. Specifically, the OT tokens will generate this pair of strings by applying a PRF on an input sid ∥ ssid. Handling the PRF tokens. To reduce the number of PRF tokens we must ensure that the sender cannot create ... See full document

63

Enhanced  Security  of  Attribute-Based  Signatures

Enhanced Security of Attribute-Based Signatures

... The privacy in Definition 2.7 only states that the relation between the signature and the secret keys is hidden. In particular, an adversary can not determine which signer issued a signature. Another way to describe ... See full document

32

RECOMMENDATIONS FOR ORDINARY CAUSE AND SUMMARY APPLICATIONS n.m..

RECOMMENDATIONS FOR ORDINARY CAUSE AND SUMMARY APPLICATIONS n.m..

... It may not be necessary to change the rules in order to use digital signatures on documents lodged in process.. The rules do not stipulate manual or digital signature.[r] ... See full document

10

Verifiable Encryption of Digital Signatures and Applications

Verifiable Encryption of Digital Signatures and Applications

... Remark 2. The certified e-mail protocol presented above works for RSA sig- natures but can easily be extended to work for other schemes based on a sim- ilar setting such as Rabin and Guillou–Quisquater [Guillou and ... See full document

20

A FORMAL ANALYSIS OF EXCHANGE OF DIGITAL SIGNATURES

A FORMAL ANALYSIS OF EXCHANGE OF DIGITAL SIGNATURES

... their signatures directly to the third party, some effort is required to produce protocols that are fair, effective, and usefully minimize demands on the third ... See full document

250

Study of Undeniable Digital Signatures Schemes

Study of Undeniable Digital Signatures Schemes

... This paper provides an overview of some modern authentication techniques that helps in proving the genuineness of the message or document. The undeniable schemes not only protect the interests of both the parties, but ... See full document

5

Fast   and  Universally-Composable  Oblivious  Transfer   and  Commitment  Scheme  with  Adaptive  Security

Fast and Universally-Composable Oblivious Transfer and Commitment Scheme with Adaptive Security

... Oblivious Transfer Extension. We provide the first adaptively-secure protocols for OT Extension solely relying on the PRO assumption. In this regard we present two results, one corresponding to semi-honest setting and ... See full document

58

Less  is  More:  Relaxed  yet  Composable  Security  Notions  for  Key  Exchange

Less is More: Relaxed yet Composable Security Notions for Key Exchange

... Theorem 3 applies to TLS-EDH in TLS 1.0, TLS 1.1 and TLS 2.1, when ephemeral Diffie-Hellman is used to agree on the pre-master secret with mutual authentication and for all authenticated encryption methods for the secure ... See full document

35

EdDSA Over Galois Field GF(p^m) for Multimedia Data

EdDSA Over Galois Field GF(p^m) for Multimedia Data

... Curve Digital Signature Algorithm (ECDSA) is the elliptic curve analogue of the ...its security is based on the intractability of some discrete logarithm ... See full document

7

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