SpruceKit
SpruceID
  • 🌲SpruceKit Introduction
    • Decentralized Identity Overview
    • Glossary
  • ⚡Quickstart
  • SpruceKit Mobile
    • SpruceKit Showcase App
      • Installation
      • Getting Started
      • Issue a Showcase Credential
      • Present a Showcase Credential
    • SpruceKit Mobile SDK
      • Introduction
      • Core Components
        • StorageManager
        • KeyManager
        • CredentialPack
        • Card
        • IsoMdlPresentation
        • mDocReader/IsomDLReader
        • Document Scanner
      • SpruceKit iOS SDK
        • Installation
        • Build a Wallet
          • Accept a W3C VC
          • Present a W3C VC
          • Present mDL in-person/offline
          • Present an mDL over the internet
        • Build a Verifier
          • Verify a W3C VC
          • Verify an mDL in-person/offline
          • Verify an mDL over the internet
      • SpruceKit Android SDK
        • Installation
        • Build a Wallet
          • Accept a W3C VC
          • Present a W3C VC
          • Present an mDL in-person/offline
          • Present an mDL over the internet
        • Build a Verifier
          • Verify a W3C VC
          • Verify an mDL in-person/offline
          • Verify an mDL over the internet
  • Verifiable Digital Credentials
    • ⚙️DIDKit
      • Installation
      • Core Concepts
      • DID Methods
      • Runtime Configuration
      • Specifications and Dependencies
      • Quickstart
      • DIDKit Packages
        • Command Line Interface
        • HTTP Server
        • Rust Crate
        • C Interface
        • Java and Android
        • Python
        • Javascript
      • DIDKit Examples
        • Core Functions (CLI)
        • Core Functions (HTTP)
        • did-web in minutes
        • Batch Generation & Verification
    • 🪪ISO mDL
      • Quickstart
      • Core Concepts
      • User Guide
  • Schema Definition Language
    • 🔗TreeLDR
      • TreeLDR Quickstart
        • First Schema
        • Compilation into JSON Schema
        • Compilation into JSON-LD Context
        • Writing a Layout
        • Simple Rust Integration
      • Types
        • Literal Types
      • Layouts
        • Primitive Layouts
        • Literal Layouts
        • Enumeration
        • Array Layout
        • References
      • Compiling
        • Schema Definition Formats
          • JSON Schema
          • JSON-LD Context
          • Resource Description Framework (RDF)
        • Programming Languages
          • Compiling to Rust
      • RDF Vocabulary
      • 💡TreeLDR Basics
        • Types and Layouts
        • Properties
        • Syntax
  • Witness for Credential Claims
    • 🔭Rebase
      • Core Library
      • Rust Client/Witness SDK
      • WASM Client SDK
      • Simple "Basic Post" Schema
      • DNS Witness Flow Schema
  • References
    • Contributing
    • Code of Conduct
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  1. Verifiable Digital Credentials
  2. DIDKit
  3. DIDKit Packages

C Interface

PreviousRust CrateNextJava and Android

Last updated 1 year ago

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At a Glance

  • Of all the interfaces DIDKit exposes, the C library is closest to the Rust original.

  • For a quick function & type reference, you can study the .

  • A C header file can be built, but it resides in a separate crate that must be compiled separately after building DIDKit. Instructions can be found .

  • To build manually and just for Android, building from the C wrapper is faster and simpler than going through Flutter; for instructions, see the Android section below.

Installation

Install Rust and DIDKit as usual and then:

Build

# from DIDKit root directory:
make -C lib ../target/release/libdidkit.so

Test

# from DIDKit root directory:
make -C lib ../target/test/c.stamp

More detailed C tests can be found in the of the DIDKit repository on GitHub. This doubles as a comprehensive code snippet demonstrating key calls and responses in C.

Examples

Tool
Example

C wrapper

⚙️
test.c file
here
C library
Test file