Abric-language-kotlin -

For researchers and advanced practitioners in MPC and ZK, Abricot offers a clean, expressive syntax to prototype and analyze protocols before committing to low-level implementations. As the field of secure computation matures, tools like Abricot may become essential for building the next generation of privacy-preserving applications. Note: Because abricot-language-kotlin may be an internal or less-documented project, always refer to its official repository for the most accurate and up-to-date syntax and features. This article is based on common patterns in cryptographic DSLs and the described architecture of similar systems.

The library typically consists of several layers:

val multiply = protocol val x = input(alice) val y = input(bob) val product = mul(x, y) // This might generate Beaver triple multiplication output(product, alice, bob) abric-language-kotlin

The name "Abricot" often appears in academic contexts related to , secret sharing , and verifiable secret sharing (VSS). The abricot-language-kotlin repository specifically provides a Kotlin-based frontend for writing cryptographic protocols that can later be compiled or interpreted for different backends (e.g., arithmetic circuits, Boolean circuits, or actual networking code).

// Not actual syntax but representative of Abricot style val secretSharing = protocol val s = secretInput(dealer, "secret") val shares = split(s, 3, 5) // 3-out-of-5 sharing send(shares[0] to alice) send(shares[1] to bob) // ... For researchers and advanced practitioners in MPC and

// Locally refresh: new_share = old_share + random_share - random_share_from_prev val newShares = parties.indices.map i -> add(oldShares[i], randoms[i])

┌─────────────────────────────────────────────┐ │ High-level DSL (Kotlin) │ │ protocol input(...) output(...) ... │ └─────────────────────────────────────────────┘ │ ▼ ┌─────────────────────────────────────────────┐ │ Intermediate Representation │ │ (IR) – Linearized sequence of gates │ └─────────────────────────────────────────────┘ │ ▼ ┌─────────────────────────────────────────────┐ │ Analysis Modules │ │ - Information flow │ │ - Leakage detection │ │ - Complexity estimation │ └─────────────────────────────────────────────┘ │ ▼ ┌─────────────────────────────────────────────┐ │ Code Generation Backends │ │ - MP-SPDZ │ │ - SCALE-MAMBA (for ZK) │ │ - Custom networking stubs (Kotlin/Netty) │ └─────────────────────────────────────────────┘ | Feature | Abricot (Kotlin) | Circom (ZK-SNARKs) | MP-SPDZ high-level | |------------------------|------------------|--------------------|--------------------| | Host language | Kotlin (JVM) | Custom language | Python-like script | | Type system | Full Kotlin types + Secret | Static, signal-based | Dynamic | | Reusable sub-protocols | Yes (functions) | Yes (templates) | Yes (functions) | | Automatic malicious security | Partially via ZK insertion | No (must specify constraints) | Via compiler flags | | IDE support | Full (IntelliJ) | Limited | Limited | | Compilation target | MPC, ZK, simulation | R1CS + witness | Various MPC engines | 5. Example: Proactive Secret Sharing in Abricot One of the classic use cases for Abricot is proactive secret sharing — where shares are refreshed periodically to maintain security against mobile adversaries. This article is based on common patterns in

1. What is Abricot? Abricot (not to be confused with the fruit "abricot" meaning apricot in French) is a research-oriented embedded DSL written in Kotlin. Its primary goal is to allow cryptographers and protocol designers to describe, analyze, and generate implementations of secure multiparty computation (MPC) protocols and zero-knowledge proofs (ZKPs) at a high level of abstraction.