@extrimian/did-core

DID Core

This package define general interfaces to work with DID such as DIDDocument, DID Methods, Purposes, Services and Verification Methods.

This packages is used by DID Registry and DID Resolver.

It does not add functionality or services but exposes the interfaces that will be used by the rest of the packages

DID Document

export interface DIDDocument {
  "@context": string | string[] | undefined | null;
  id: string;
  verificationMethod: Array<VerificationMethodPublicKey58 | VerificationMethodGpg | VerificationMethodJwk>;
  authentication: Array<string | VerificationMethodPublicKey58 | VerificationMethodGpg | VerificationMethodJwk>;
  assertionMethod: Array<string | VerificationMethodPublicKey58 | VerificationMethodGpg | VerificationMethodJwk>;
  keyAgreement: Array<string | VerificationMethodPublicKey58 | VerificationMethodGpg | VerificationMethodJwk>;
  capabilityDelegation: Array<string | VerificationMethodPublicKey58 | VerificationMethodGpg | VerificationMethodJwk>;
  capabilityInvocation: Array<string | VerificationMethodPublicKey58 | VerificationMethodGpg | VerificationMethodJwk>;
  service?: Array<Service>
}

Purpose

export abstract class Purpose {
    abstract name: string;
}

export class AuthenticationPurpose extends Purpose {
    name = "authentication";
    challenge?: string;

    public constructor(init?: Partial<AuthenticationPurpose>) {
        super();
        Object.assign(this, init);
    }
}

export class AssertionMethodPurpuse {
    name = "assertionMethod";
}

export class CapabilityInvocationPurpose {
    name = "capabilityInvocation";
}

export class KeyAgreementPurpose {
    name = "keyAgreement";
}

Service

  id: string,
  type: string,
  serviceEndpoint: string | string[] | Record<string, string | string[]>

Verification Methods

export interface VerificationMethod {
    id: string;
    type: string;
    controller: string;
}

export interface VerificationMethodPublicKeyHex extends VerificationMethod {
    type: VerificationMethodTypes.Ed25519VerificationKey2018 | VerificationMethodTypes.Bls12381G1Key2020 | VerificationMethodTypes.EcdsaSecp256k1VerificationKey2019;
    publicKeyHex: string;
}

export interface VerificationMethodPublicKey58 extends VerificationMethod {
    type: VerificationMethodTypes.Ed25519VerificationKey2018 | VerificationMethodTypes.Bls12381G1Key2020 | VerificationMethodTypes.EcdsaSecp256k1VerificationKey2019;
    publicKeyBase58: string;
}

export interface VerificationMethodGpg extends VerificationMethod {
    type: VerificationMethodTypes.GpgVerificationKey2020;
    publicKeyGpg: string;
}

export interface VerificationMethodJwk extends VerificationMethod {
    type: VerificationMethodTypes.JsonWebKey2020 | VerificationMethodTypes.EcdsaSecp256k1VerificationKey2019;

    publicKeyJwk: {
        crv: string;
        x: string;
        y: string;
        kty: string;
        kid?: string;
    };
}