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Generic Side-channel attacks on CCA-secure lattice-based PKE and KEM schemes
Lattice based cryptography side-channel attacks CCA transformation
2019/8/21
In this article, we demonstrate practical side-channel assisted chosen-ciphertext attacks (CCA) over multiple CCA-secure lattice-based public-key encryption schemes (PKE) and key-encapsulation mechani...
Securing DNSSEC Keys via Threshold ECDSA From Generic MPC
Multiparty computation Threshold ECDSA Honest majority
2019/8/6
A surge in DNS cache poisoning attacks in the recent years generated an incentive to push the deployment of DNSSEC forward. ICANN accredited registrars are required to support DNSSEC signing for their...
A Generic Construction for Revocable Identity-Based Encryption with Subset Difference Methods
Revocable identity-based encryption Subset difference method Generic construction
2019/7/15
To deal with dynamically changing user's credentials in identity-based encryption (IBE), providing an efficient key revocation method is a very important issue. Recently, Ma and Lin proposed a generic...
Hash combiners are a practical way to make cryptographic hash functions more tolerant to future attacks and compatible with existing infrastructure. A combiner combines two or more hash functions in a...
Generic Construction of Linkable Ring Signature
ring signature linkable ring signature generic construction
2019/4/11
We propose a generic construction of linkable ring signature from any compatible ring signature scheme and one-time signature scheme. Our construction has both theoretical and practical interest. In t...
A Generic Construction of Revocable Identity-Based Encryption
Generic Construction Revocable Identity-Based Encryption
2019/3/21
Revocable identity-based encryption (RIBE) is an extension of IBE that supports a key revocation mechanism, which is important when deployed an IBE system in practice. Boneh and Franklin presented the...
Tighter security proofs for generic key encapsulation mechanism in the quantum random oracle model
quantum random oracle model key encapsulation mechanism generic construction
2019/2/27
In (TCC 2017), Hofheinz, Hoevelmanns and Kiltz provided a fine-grained and modular toolkit of generic key encapsulation mechanism (KEM) constructions, which were widely used among KEM submissions to N...
A Generic Attack on Lattice-based Schemes using Decryption Errors with Application to ss-ntru-pke
Lattice-based cryptography NIST post-quantum standardization decryption error
2019/1/19
Hard learning problems are central topics in recent cryptographic research. Many cryptographic primitives relate their security to difficult problems in lattices, such as the shortest vector problem. ...
Tight Security Bounds for Generic Stream Cipher Constructions
Stream Ciphers Generic Time-Memory-Data Tradeoff Attacks Security Lower Bound Proofs
2019/1/9
The design of modern stream ciphers is strongly influenced by the fact that Time-Memory-Data tradeoff attacks (TMD-TO attacks) reduce their effective key length to SL/2SL/2, where SLSL denotes the inn...
Robustly reusable Fuzzy Extractor (rrFE) considers reusability and robustness simultaneously. We present two approaches to the generic construction of rrFE. Both of approaches make use of a secure ske...
Generic Authenticated Key Exchange in the Quantum Random Oracle Model
Authenticated key exchange quantum random oracle model NIST
2018/11/8
We propose FO-AKE , a generic construction of two-message authenticated key exchange (AKE) from any passively secure public key encryption (PKE) in the quantum random oracle model (QROM). Whereas prev...
Reconsidering Generic Composition: the Tag-then-Encrypt case
Authenticated Encryption generic composition tag-then-encrypt
2018/11/5
Authenticated Encryption (AEAE) achieves confidentiality and authenticity, the two most fundamental goals of cryptography, in a single scheme. A common strategy to obtain AEAE is to combine a Message ...
Generic Double-Authentication Preventing Signatures and a Post-Quantum Instantiation
digital signatures double-authentication prevention Shamir secret sharing
2018/9/6
Double-authentication preventing signatures (DAPS) are a variant of digital signatures which have received considerable attention recently (Derler et al. EuroS&P 2018, Poettering AfricaCrypt 2018). Th...
Ground-up Root-cause Analysis guided Low-Overhead Generic Countermeasure for Electro-Magnetic Side-Channel Attack
EM Side-channel attack generic countermeasure cryptographic hardware
2018/6/25
The threat of side-channels is becoming increasingly prominent for resource-constrained internet-connected devices. While numerous power side-channel countermeasures have been proposed, a promising ap...
Generic Attacks against Beyond-Birthday-Bound MACs
Modes of operation Cryptanalysis Message Authentication Codes
2018/6/5
In this work, we study the security of several recent MAC constructions with provable security beyond the birthday bound. We consider block-cipher based constructions with a double-block internal stat...