zcash_dart 0.2.0

zcash_dart is a Dart package that implements Zcash cryptography and transaction management, including Sapling, Orchard, and transparent transactions. It provides utilities for key management, proofs, [...]

ZCash Dart

Zcash cryptography, transactions, and zero-knowledge proofs — implemented in Dart.

zcash_dart is a low-level Dart library for building Zcash wallets, SDKs, and protocol-level applications.

It provides support for:

• Transparent transactions
• Sapling transactions
• Orchard transactions
• Zcash addresses and keys
• Zero-knowledge proof infrastructure

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Features

Transactions

Support for Zcash transaction handling:

• Serialize and deserialize all supported Zcash transaction versions
• Create, sign, and verify:
  • Orchard bundles
  • Sapling bundles
  • Transparent transactions
• PCZT (Partially Constructed Zcash Transaction) support
• Dart implementation of the Zcash Incremental Merkle Tree

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Addresses & Keys

Support for Zcash key and address systems:

• Sprout addresses
• Sapling payment addresses
• Transparent addresses:
  • P2PKH
  • P2SH
• Unified Addresses
• ZIP-32 hierarchical deterministic wallets
• BIP-32 HD wallet support
• USK (Unified Spending Key)
• UFVK (Unified Full Viewing Key)
• UIVK (Unified Incoming Viewing Key)

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Zero-Knowledge Proofs

Support for Zcash zero-knowledge proof components:

• Orchard proving system
• Sapling proving system
• PLONK / Groth16 proof support

Building ZK Provers

ZK proving code is located in the zk folder.

To compile ZK components for your target platform:

cd zk
cargo build --release [target]

Compile the prover for your required target:

• Native platforms
• WebAssembly (WASM)
• Other supported targets

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Cryptography

All Zcash-required cryptographic primitives are implemented in:

blockchain_utils

Supported primitives include:

• FF1 format-preserving encryption
• f4jumble
• BLS12-381
• Jubjub
• Pallas / Vesta curves
• Sinsemilla
• Poseidon hash

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Providers

Wallet integration support through:

• walletd provider

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Examples

See the example folder for usage examples.

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Web Support

zcash_dart supports Dart Web.

Features:

• Core cryptographic primitives are implemented in pure Dart
• No native dependency is required for core cryptography
• Compatible with Dart Web
• Zero-knowledge components can be compiled to WebAssembly (WASM)

Performance Considerations

Zcash cryptography and zero-knowledge proof generation are computationally expensive in Dart Web.

For production web applications:

• Compile heavy cryptographic operations to WASM
• Avoid blocking the browser main thread

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Contributing

Contributions are welcome.

1. Fork the repository
2. Create a feature branch
3. Ensure tests pass
4. Open a pull request with a clear description

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Bug Reports & Feature Requests

Please use the GitHub Issues tab for:

• Bug reports
• Feature requests
• Security concerns
• Improvement suggestions