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Voltaire Swift

Native Swift wrappers over Voltaire’s C FFI, enabling iOS and macOS apps to use the same primitives used across Zig and TypeScript.
New to the project? Start with Getting Started.

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What’s Included

  • Core primitives: Address, Hash, Hex, Bytes32, U256
  • Cryptography: Keccak-256, secp256k1 (PrivateKey, PublicKey, Signature)
  • Zero-copy C interop for performance and safety

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Quick Start

zig build build-ts-native
cd swift
swift build && swift test

import Voltaire

// Address
let addr = try Address(hex: "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045")
print(addr.checksumHex)

// Keccak-256
let h = Keccak256.hash("hello")
print(h.hex)

// U256
let v = try U256(hex: "0x01")
print(v.hex)

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API Reference

Getting Started

Install and build the Swift package

Xcode Integration

Add the package to Xcode apps

Address

20-byte EVM addresses with EIP-55

Hash

32-byte Keccak-256 hashes

Hex

Encode and decode hex strings

Bytes32

Generic 32-byte values

U256

256-bit unsigned integers

PrivateKey

secp256k1 private keys

PublicKey

secp256k1 public keys

Signature

ECDSA signatures (r, s, v)