Repository files navigation

The Indy SDK has been deprecated in favor of the Indy and Aries shared libraries. Please use the following libraries and projects to replace your use of the Indy SDK.

A module for interacting with theIndy Node ledger.

A secure (encrypted at rest) storage and a key management service suitable for use withHyperledger Aries agents and possibly other digital trust agents. Askar is a replacement implementation (with lessons learned!) of theindy-wallet part of theHyperledger Indy SDK. Askar has been demonstrated to be more performant and stable than the Indy SDK when under comparable load.

Rust library and reference implementation of theAnoncreds V1.0 specification. Supporting ledger agnostic anoncreds.

The a feature parity replacement for theindy-cli from theindy-sdk.

This is the official SDK forHyperledger Indy,which provides a distributed-ledger-based foundation forself-sovereign identity. Indy provides a software ecosystem for private, secure, and powerful identity, and the Indy SDK enables clients for it.The major artifact of the SDK is a C-callablelibrary; there are also convenience wrappers for various programming languages and Indy CLI tool.

All bugs, stories, and backlog for this project are managed throughHyperledger's Jirain project IS (note that regular Indy tickets are in the INDY project instead...). Also, make sure to joinus onHyperledger's Rocket.Chat at #indy-sdk to discuss. You will need a Linux Foundation login to get access to these channels

If you have just started learning about self-sovereign identity, here are some resources to increase your understanding:

• This extended tutorial introduces Indy, explains how the whole ecosystem works, and how thefunctions in the SDK can be used to construct rich clients:Indy-SDK Getting-Started Guide

  • Please take note that this tutorial doesn't cover how sides set up a connection and exchange messages.How this communication channel can be built you can find atAries project which describes it in great details.

• Hyperledger Indy Working Group calls happen every Thursday at 8amPT, 9amMT, 11amET, 4pmBST. Add to your calendar and join from any device:https://zoom.us/j/232861185

• A recent webinar explaining self-sovereign identity using Hyperledger Indy and Sovrin:SSI Meetup Webinar

• Visit the main resource for all things "Indy" to get acquainted with the code base, helpful resources, and up-to-date information:Hyperledger Wiki-Indy.

• You may also want to look at theolder guidethat explored the ecosystem via command line. That material is beingrewritten but still contains some useful ideas.

The major artifact of the SDK is a C-callable library that provides the basic building blocks forthe creation of applications on the top ofHyperledger Indy.It is available for most popular desktop, mobile and server platforms.

A set of libindy wrappers for developing Indy-based applications in your favorite programming language.Indy SDK provides libindy wrappers for the following programming languages and platforms:

• Java
• Python
• iOS
• NodeJS
• .Net
• Rust

Indy CLI is the official command line interface that helps Indy developers and administrators.

Libnullpay is a libindy plugin that can be used for development of applications that use the Payments API of Indy SDK.

Libvcx is a c-callable library built on top of libindy that provides a high-levelcredential exchange protocol. It simplifies creation of agent applications and providesbetter agent-2-agent interoperability forHyperledger Indyinfrastructure.

This library is currently in anexperimental state and is not part of official releases.

A set of libvcx wrappers for developing vcx-based applications in your favorite programming language.

Indy SDK provides libvcx wrappers for the following programming languages and platforms:

• Java
• Python
• iOS
• NodeJS

These wrappers are currently inexperimental state and it is not part of official releases.

• For the main workflow example checkVCX Python demo.
• Another libvcx example is available asVCX NodeJS demo.
• For mobile seeiOS Demo project

LibVCX can be used withmediator agencywhich enables asynchronous communication between 2 parties.

• Dummy Cloud Agent is simple implementation of VCX compatible Cloud Agent.The main purpose of this implementation is VCX testing, demos and documentation of VCX protocol.
• NodeVCXAgency is alternative implementation in NodeJS.

Short, simple tutorials that demonstrate how to accomplish common tasksare also available. See thedocs/how-tos folder.

1. Write a DID and Query Its Verkey
2. Rotate a Key
3. Save a Schema and Cred Def
4. Issue a Credential
5. Negotiate a Proof
6. Send a Secure Message

The Indy SDK release process defines the following release channels:

• master - development builds for each push to master branch.
• rc - release candidates.
• stable - stable releases.

Please refer to ourrelease workflow for more details.

It is recommended to install the SDK packages with APT:

sudo apt-get install ca-certificates -ysudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys CE7709D068DB5E88sudo add-apt-repository "deb https://repo.sovrin.org/sdk/deb (xenial|bionic) {release channel}"sudo apt-get updatesudo apt-get install -y {library}

• {library} must be replaced with libindy, libnullpay, libvcx or indy-cli.
• (xenial|bionic) xenial for 16.04 Ubuntu and bionic for 18.04 Ubuntu.
• {release channel} must be replaced with master, rc or stable to define corresponded release channel.Please See the section "Release channels" above for more details.

1. Go tohttps://repo.sovrin.org/windows/{library}/{release-channel}.
2. Download last version of library.
3. Unzip archives to the directory where you want to save working library.
4. After unzip you will get next structure of files:

• Your working directory for libindy
  • include
    • ...
  • lib
    • indy.dll
    • libeay32md.dll
    • libsodium.dll
    • libzmq.dll
    • ssleay32md.dll

include contains c-header files which contains all necessary declarationsthat may be need for your applications.

lib contains all necessary binaries which contains libindy and all it's dependencies.You must add to PATH environment variable path to lib. It's necessary for dynamic linkageyour application with libindy.

{release channel} must be replaced with master, rc or stable to define corresponded release channel.See section "Release channels" for more details.

{library} must be replaced with libindy, libnullpay, libvcx or indy-cli.

Seewrapper iOS install documentation.

1. Go tohttps://repo.sovrin.org/android/{library}/{release-channel}.
2. 3 architecture are supported as of now arm,arm64 and x86.
3. Download latest version of library.
4. Unzip archives to the directory where you want to save the.so files.
5. After unzip you will get next structure of files:

• Your working directory for libindy
  • include
    • ...
  • lib
    • libindy.so
    • libindy_shared.so
    • libindy.a

include contains c-header files which contains all necessary declarationsthat may be need for your applications.

lib contains three types of binaries.

• libindy.so - This is a shared library which is statically linked with all the depenedencies.You dont need to sidelaod other dependencies like zmq, sodium and openssl to android app if you use this.

• libindy_shared.so - This is pure shared library. It is not dynamically linked to its dependencies.You need to sideload the binaries with its dependencies. You can download the needed pre-built dependencies fromhere

  • Rename this library tolibindy.so before loading it into the app. This will help you in having the compatibility with existing wrappers.

• libindy.a - This is a static library, which is compiled with NDK.

{library} must be replaced with libindy, libnullpay or libvcx.

How to use instructions.

{release channel} must be replaced with rc or stable to define corresponded release channel.See section "Release channels" for more details.

Note :

• [WARNING] This library should be considered as experimental as currently unit tests arenot executed in the CI phase.

1. Go tohttps://repo.sovrin.org/rpm/{library}/{release-channel}.
2. Download and unzip the last version of library.
3. Install withrpm -i library-version.rpm.

{library} must be replaced with libindy, libnullpay, libvcx, indy-cli to define corresponded library.

{release channel} must be replaced with master, rc or stable to define corresponded release channel.See section "Release channels" for more details.

1. Go tohttps://repo.sovrin.org/macos/{library}/{release-channel}.
2. Download the latest version of library.
3. Unzip archives to the directory where you want to save working library.
4. After unzip you will get next structure of files:

• Your working directory
  • include - contains c-header files which contains all necessary declarations that may be need for your applications.
    • ...
  • lib - contains library binaries (static and dynamic).
    • library.a
    • library.dylib

5. Install dependent libraries: libsodium, zeromq, openssl. The dependent libraries should match the version with what you can find fromotool -L libindy.dylib.

You need add the path to lib folder to LIBRARY_PATH environment variable.

{library} must be replaced with libindy, libnullpay, libvcx or indy-cli to define corresponded library.

{release channel} must be replaced with master, rc or stable to define corresponded release channel.

• Ubuntu based distributions (Ubuntu 16.04)
• RHEL based distributions (Centos)
• Windows
• MacOS
• Android

Note:By defaultcargo build produce debug artifacts with a large amount of run-time checks.It's good for development, but this build can be in 100+ times slower for some math calculation.If you would like to analyse CPU performance of libindy for your use case, you have to use release artifacts (cargo build --release).

To test the SDK codebase with a virtual Indy node network, you can start a pool of local nodes using docker:

Note: If you are getting a PoolLedgerTimeout error it's because the IP addresses incli/docker_pool_transactions_genesis and the pool configuration don't match.Use method 3 to configure the IPs of the docker containers to match the pool.

Start the pool of local nodes on127.0.0.1:9701-9708 with Docker by running:

docker build -f ci/indy-pool.dockerfile -t indy_pool .docker run -itd -p 9701-9708:9701-9708 indy_pool

Dockerfileci/indy-pool.dockerfile supports an optional pool_ip param that allowschanging ip of pool nodes in generated pool configuration.

You can start the pool with e.g. with the IP address of your development machine's WIFI interfaceso that mobile apps in the same network can reach the pool.

# replace 192.168.179.90 with your wifi IP addressdocker build --build-arg pool_ip=192.168.179.90 -f ci/indy-pool.dockerfile -t indy_pool .docker run -itd -p 192.168.179.90:9701-9708:9701-9708 indy_pool

To connect to the pool the IP addresses in /var/lib/indy/sandbox/pool_transactions_genesis (in docker) andthe pool configuration you use in your mobile app must match.

The following commands allow to start local nodes pool in custom docker network and access this poolby custom ip in docker network:

docker network create --subnet 10.0.0.0/8 indy_pool_networkdocker build --build-arg pool_ip=10.0.0.2 -f ci/indy-pool.dockerfile -t indy_pool .docker run -d --ip="10.0.0.2" --net=indy_pool_network indy_pool

Note that for Windows and MacOS this approach has some issues. Docker for these OS run intheir virtual environment. First command creates network for container and host can'tget access to that network because container placed on virtual machine. You must appropriate set upnetworking on your virtual environment. See the instructions for MacOS below.

If you use some Docker distribution based on Virtual Box you can use Virtual Box'sport forwarding future to map 9701-9709 container ports to local 9701-9709 ports.

If you use VMWare Fusion to run Docker locally, follow the instructions fromthis articleand add the following lines to/Library/Preferences/VMware Fusion/vmnet8/nat.conf:

# Use these with care - anyone can enter into your VM through these...# The format and example are as follows:#<external port number> = <VM's IP address>:<VM's port number>#8080 = 172.16.3.128:809701 = <your_docker_ip>:97019702 = <your_docker_ip>:97029703 = <your_docker_ip>:97039704 = <your_docker_ip>:97049705 = <your_docker_ip>:97059706 = <your_docker_ip>:97069707 = <your_docker_ip>:97079708 = <your_docker_ip>:97089709 = <your_docker_ip>:9709

where <your_docker_ip> is your Docker host IP.

Docker machine needs to be rebooted after these changes.

The followingwrappers are tested and complete.

There is also active work on a wrapper for Go; visit#indy-sdk on Rocket.Chat fordetails.

• An explanation of how to install the official command line interface for that provides commands to manage wallets and interactions with the ledger:Indy CLI

The documents that provide necessary information for Libindy migrations.

• v1.3.0 → v1.4.0
• v1.4.0 → v1.5.0
• v1.5.0 → v1.6.x
• v1.6.0 → v1.7.x
• v1.7.0 → v1.8.x
• v1.8.0 → v1.9.x
• v1.9.0 → v1.10.x
• v1.10.0 → v1.11.x
• v1.11.0 → v1.12.x
• v1.12.0 → v1.13.x
• v1.13.0 → v1.14.x
• v1.14.0 → v1.15.x
• v1.15.0 → v1.16.x

• We'd love your help; see theseHL Indy Wiki andslides on how to contribute.
• If you need to add a new call, read thisinstruction.
• You may also want to read this info aboutmaintainers and our process.
• We use developer certificate of origin (DCO) in all hyperledger repositories,so to get your pull requests accepted, you must certify your commits by signing off on each commit.More information can be found inSigning Commits article.

• Libindy implements multithreading approach based onmpsc channels.If your application needs to use Libindy from multiple processes you should keep in mind the following restrictions:
  • Fork - duplicates only the main thread. So, child threads will not be duplicated.If any out-of-process requirements are possible, the caller must fork firstbefore any calls to Libindy(otherwise the command from a child thread will hang). Fork is only available on Unix.
  • Popen - spawns a new OS level process which will create its own child threads. Popen is cross-platform.