Glossary
A-D
| Term | Description |
|---|---|
| ACA-Py | Aries Cloud Agent Python - SSI agent framework developed by Hyperledger |
| Agent | Software component that implements SSI protocols and performs DIDComm messaging |
| AnonCreds | Hyperledger specification for anonymous credentials |
| Askar | Aries Secure Storage - wallet storage library |
| Connection | Secure communication channel established between two agents |
| Credential | Digital identity document issued by Issuer to Holder |
| Credential Definition | Definition required for issuing credentials based on a schema |
| DID | Decentralized Identifier - decentralized identifier |
| DIDComm | DID-based secure messaging protocol |
| DID Document | Metadata and public key information associated with a DID |
E-L
| Term | Description |
|---|---|
| Ed25519 | Elliptic curve algorithm used for digital signatures |
| Holder | Party that owns and stores credentials |
| Indy | Hyperledger Indy - distributed ledger technology for SSI |
| Issuer | Institution or authority that issues credentials |
| JWT | JSON Web Token - authentication token |
| Ledger | Distributed ledger - distributed ledger technology |
M-R
| Term | Description |
|---|---|
| Mediator | Intermediary layer that routes messages for offline agents |
| OOB | Out-of-Band - out-of-band invitation mechanism |
| Peer DID | Peerwise DID type not written to ledger |
| Predicate | Value comparison in ZKP (e.g., age > 18) |
| Presentation | Proof presented by Holder to Verifier |
| Proof | Verification evidence derived from credential |
| Proof Request | List of information Verifier requests from Holder |
| Revocation | Process of invalidating a credential |
| Revocation Registry | Registry of revoked credentials |
| Routing Key | Key used for routing through Mediator |
S-Z
| Term | Description |
|---|---|
| Schema | Definition of credential attributes |
| Selective Disclosure | Sharing selected information from credential |
| SSI | Self-Sovereign Identity - user-centric identity management |
| Tails File | Cryptographic data required for revocation |
| Tails Server | HTTP server serving Tails files |
| Trust Triangle | Issuer-Holder-Verifier relationship model |
| Verifiable Credential | Verifiable identity document in W3C standard |
| Verifiable Presentation | Verifiable presentation created from credential |
| Verifier | Party that verifies credentials/proofs |
| Wallet | Secure storage for DIDs, keys, and credentials |
| X25519 | Elliptic curve algorithm used for key exchange |
| ZKP | Zero-Knowledge Proof - verification without revealing data |