@sphereon/did-resolver-key/src/drivers/secp256k1.ts

Sphereon did:key resolver with BBS+/BLS and EBSI support.

import * as u8a from 'uint8arrays'
import { DIDDocument } from 'did-resolver'

export const keyToDidDoc = (pubKeyBytes: Uint8Array, fingerprint: string): DIDDocument => {
  const did = `did:key:${fingerprint}`
  const keyId = `${did}#${fingerprint}`
  return {
    id: did,
    verificationMethod: [
      {
        id: keyId,
        type: 'Secp256k1VerificationKey2018',
        controller: did,
        publicKeyBase58: u8a.toString(pubKeyBytes, 'base58btc'),
      },
    ],
    authentication: [keyId],
    assertionMethod: [keyId],
    capabilityDelegation: [keyId],
    capabilityInvocation: [keyId],
  }
}

export default { keyToDidDoc }