Bump Nethereum.Util from 6.0.4 to 6.1.0

[dependabot]

Updated Nethereum.Util from 6.0.4 to 6.1.0.

Release notes

Sourced from Nethereum.Util's releases.

6.1.0

Nethereum 6.1.0

Nethereum 6.1.0 introduces a complete zero-knowledge proof infrastructure with native and browser-based Groth16 proof generation, the Privacy Pools SDK for private deposits and withdrawals with Association Set Provider support, new Merkle tree libraries (EIP-7864 Binary Trie, Sparse Merkle Trees with Poseidon hashing), SSZ model improvements, cross-platform BLS runtime updates, and demo applications showcasing the full ZK proof pipeline.

Full Changelog

Nethereum.ZkProofs — ZK Proof Abstractions

New provider-agnostic package defining the core interfaces and models for zero-knowledge proof generation in .NET. All proof providers (browser, native, HTTP) implement these abstractions, making them interchangeable.

• IZkProofProvider — central interface with FullProveAsync(ZkProofRequest, CancellationToken) and Scheme property
• ZkProofRequest — input model carrying circuit WASM, zkey, input JSON, witness bytes, and circuit graph data
• ZkProofResult — output model with ProofJson, PublicSignalsJson, and parsed BigInteger[] PublicSignals
• ZkProofScheme enum — Groth16, Plonk, Fflonk, Stark
• ICircuitArtifactSource — pluggable circuit artifact loading (WASM, zkey)
• ICircuitGraphSource — circuit graph data for native witness generation
• FileCircuitArtifactSource and EmbeddedCircuitArtifactSource — filesystem and in-memory artifact loading
• CircuitArtifactLocator — standard directory layout resolver for circuit artifacts
• HttpZkProofProvider — delegates proof generation to a remote HTTP prover endpoint
• Groth16ProofConverter — parse snarkjs JSON proofs and convert to Solidity-compatible format for on-chain verification

Commits: e28026f2

Nethereum.ZkProofsVerifier — Pure C# Groth16 Verification

New package providing Groth16 proof verification using BN128 elliptic curve pairing — entirely in managed C# with no native dependencies. Directly consumes snarkjs/Circom JSON output for one-liner verification.

• CircomGroth16Adapter.Verify(proofJson, vkJson, publicInputsJson) — high-level verification API
• Groth16Verifier — BN128 pairing check implementation using BouncyCastle
• Snarkjs JSON parsers for proofs, verification keys, and public signals
• Returns structured ZkVerificationResult with IsValid and Error properties

Commits: 22fe04a6, 6b3858e8

Nethereum.ZkProofs.Snarkjs — Node.js Proof Backend

New IZkProofProvider implementation that generates Groth16 proofs by invoking snarkjs via a Node.js child process. Suitable for server-side applications where Node.js is available.

Commits: 6d998f5b

Nethereum.ZkProofs.Snarkjs.Blazor — Browser-Based Proof Generation

New IZkProofProvider implementation for Blazor WebAssembly applications. Calls snarkjs via JavaScript interop, enabling client-side proof generation entirely in the browser — private inputs never leave the user's machine.

• SnarkjsBlazorProvider — implements IZkProofProvider and IAsyncDisposable
• Loads snarkjs via <script> tag (UMD bundle) for broad compatibility
• Sends circuit WASM and zkey as base64 to JavaScript, returns proof JSON
• Configurable snarkjs URL (self-hosted or CDN)

Commits: 074a8576, e2a6a738
... (truncated)

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