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Hyperledger Aries

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DescriptionInfrastructure for blockchain-rooted, peer-to-peer interactions. It provides a shared, reusable, interoperable tool kit designed for initiatives and solutions focused on creating, transmitting and storing verifiable digital credentials.

Hyperledger Aries is infrastructure for blockchain-rooted, peer-to-peer interactions. It includes a shared cryptographic wallet (the secure storage tech, not a UI) for blockchain clients as well as a communications protocol for allowing off-ledger interaction between those clients.  This project consumes the cryptographic support provided by Hyperledger Ursa, to provide secure secret management and decentralized key management functionality.

Key Characteristics

  • A blockchain interface layer (known as a resolver) for creating and signing blockchain transactions
  • A cryptographic wallet that can be used for secure storage of cryptographic secrets and other information (the secure storage tech, not a UI) used to build blockchain clients
  • An encrypted messaging system for allowing off-ledger interaction between those clients using multiple transport protocols.
  • An implementation of ZKP-capable W3C verifiable credentials using the ZKP primitives found in Ursa.
  • An implementation of the Decentralized Key Management System (DKMS) specification currently being incubated in Hyperledger Indy.
  • A mechanism to build higher-level protocols and API-like use cases based on the secure messaging functionality described earlier.


Project Management



Mailing List

  • aries

Chat (for questions and ephemeral discussions)


Aries Working Group