Cryptology ePrint Archive
For more than 20 years, the Cryptology ePrint Archive has been publishing pre-print papers relevant to the field of cryptology. You can read more about our goals and history , see our acceptance and publishing conditions , check out some statistics , or contact us .
Operations of the Cryptology ePrint Archive - IACR
The Cryptology ePrint Archive provides another way to announcing new results. This reflects IACR's goals and policies, as confirmed by the IACR Board of Directors meeting on May 2, 1999 in Prague:
Faster Signatures from MPC-in-the-Head - IACR Cryptology ePrint …
2024年2月15日 · We revisit the construction of signature schemes using the MPC-in-the-head paradigm. We obtain two main contributions: – We observe that previous signatures in the MPC-in-the-head paradigm must rely on a salted version of the GGM puncturable pseudorandom function (PPRF) to avoid collision attacks. We design a new efficient PPRF construction that is …
Publicly Verifiable Zero-Knowledge and Post-Quantum Signatures …
2023年6月26日 · We present a new method for transforming zero-knowledge protocols in the designated verifier setting into public-coin protocols, which can be made non-interactive and publicly verifiable. Our transformation applies to a large class of ZK protocols based on oblivious transfer. In particular, we show that it can be applied to recent, fast protocols based on vector …
SQISignHD: New Dimensions in Cryptography - IACR Cryptology …
2023年3月25日 · We introduce SQIsignHD, a new post-quantum digital signature scheme inspired by SQIsign. SQIsignHD exploits the recent algorithmic breakthrough underlying the attack on SIDH, which allows to efficiently represent isogenies of arbitrary degrees as components of a higher dimensional isogeny. SQIsignHD overcomes the main drawbacks of SQIsign. First, it …
Efficient Asymmetric PAKE Compiler from KEM and AE
2024年9月7日 · Password Authenticated Key Exchange (PAKE) allows two parties to establish a secure session key with a shared low-entropy password pw. Asymmetric PAKE (aPAKE) extends PAKE in the client-server setting, and the server only stores a password file instead of the plain password so as to provide additional security guarantee when the server is compromised. In …
CRYSTALS -- Dilithium: Digital Signatures from Module Lattices
2017年6月27日 · This paper presents Dilithium, a lattice-based signature scheme that is part of the CRYSTALS (Cryptographic Suite for Algebraic Lattices) package that will be submitted to the NIST call for post-quantum standards. The scheme is designed to be simple to securely implement against side-channel attacks and to have comparable efficiency to the currently …
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Verifiable Secret Sharing Simplified - IACR Cryptology ePrint Archive
2023年8月6日 · Verifiable Secret Sharing (VSS) is a fundamental building block in cryptography. Despite its importance and extensive studies, existing VSS protocols are often complex and inefficient. Many of them do not support dual thresholds, are not publicly verifiable, or do not properly terminate in asynchronous networks. This paper presents a new and simple approach …
An Efficient ZK Compiler from SIMD Circuits to General Circuits
2023年10月17日 · We propose a generic compiler that can convert any zero-knowledge (ZK) proof for SIMD circuits to general circuits efficiently, and an extension that can preserve the space complexity of the proof systems. Our compiler can immediately produce new results improving upon state of the art. -By plugging in our compiler to Antman, an interactive sublinear …