Key agreement

[adewaleafolabi]

This PR adds the keyAgreement field to the knox go library.

Using this in the wallet produces

{
   "@context":[
      "https://www.w3.org/ns/did/v1",
      "https://w3id.org/security/suites/ed25519-2020/v1"
   ],
   "id":"z6MkqFcAnLjLZBDym6bRHUuxDqU3NrdDui7cPwr6aM1tpMBQ",
   "authentication":[
      {
         "id":"did:knox:z6MkqFcAnLjLZBDym6bRHUuxDqU3NrdDui7cPwr6aM1tpMBQ#z6MkqFcAnLjLZBDym6bRHUuxDqU3NrdDui7cPwr6aM1tpMBQ",
         "type":"Ed25519VerificationKey2020",
         "controller":"did:knox:z6MkqFcAnLjLZBDym6bRHUuxDqU3NrdDui7cPwr6aM1tpMBQ",
         "publicKeyMultibase":"z6MkqFcAnLjLZBDym6bRHUuxDqU3NrdDui7cPwr6aM1tpMBQ"
      }
   ],
   "capabilityInvocation":[
      {
         "id":"did:knox:z6MkqFcAnLjLZBDym6bRHUuxDqU3NrdDui7cPwr6aM1tpMBQ#z6MkqFcAnLjLZBDym6bRHUuxDqU3NrdDui7cPwr6aM1tpMBQ",
         "type":"Ed25519VerificationKey2020",
         "controller":"did:knox:z6MkqFcAnLjLZBDym6bRHUuxDqU3NrdDui7cPwr6aM1tpMBQ",
         "publicKeyMultibase":"z6MkqFcAnLjLZBDym6bRHUuxDqU3NrdDui7cPwr6aM1tpMBQ"
      }
   ],
   "capabilityDelegation":[
      {
         "id":"did:knox:z6MkqFcAnLjLZBDym6bRHUuxDqU3NrdDui7cPwr6aM1tpMBQ#z6MkqFcAnLjLZBDym6bRHUuxDqU3NrdDui7cPwr6aM1tpMBQ",
         "type":"Ed25519VerificationKey2020",
         "controller":"did:knox:z6MkqFcAnLjLZBDym6bRHUuxDqU3NrdDui7cPwr6aM1tpMBQ",
         "publicKeyMultibase":"z6MkqFcAnLjLZBDym6bRHUuxDqU3NrdDui7cPwr6aM1tpMBQ"
      }
   ],
   "assertionMethod":[
      {
         "id":"did:knox:z6MkqFcAnLjLZBDym6bRHUuxDqU3NrdDui7cPwr6aM1tpMBQ#z6MkqFcAnLjLZBDym6bRHUuxDqU3NrdDui7cPwr6aM1tpMBQ",
         "type":"Ed25519VerificationKey2020",
         "controller":"did:knox:z6MkqFcAnLjLZBDym6bRHUuxDqU3NrdDui7cPwr6aM1tpMBQ",
         "publicKeyMultibase":"z6MkqFcAnLjLZBDym6bRHUuxDqU3NrdDui7cPwr6aM1tpMBQ"
      }
   ],
   "keyAgreement":[
      {
         "id":"did:knox:z6MkqFcAnLjLZBDym6bRHUuxDqU3NrdDui7cPwr6aM1tpMBQ",
         "type":"X25519KeyAgreementKey2019",
         "controller":"did:knox:z6MkqFcAnLjLZBDym6bRHUuxDqU3NrdDui7cPwr6aM1tpMBQ",
         "publicKeyMultibase":"z6MkqFcAnLjLZBDym6bRHUuxDqU3NrdDui7cPwr6aM1tpMBQ"
      }
   ]
}

[fkim7]

Can we update the desc to something about implementing https://www.w3.org/TR/did-core/#key-agreement?

Also are we expecting did test suite updates and results as well?

[LuisOsta]

@adewaleafolabi What do you think about the testing stuff that Francis brought up?

[adewaleafolabi]

@LuisOsta I can setup some preliminary tests here. We can expand that as we go

[fkim7]

Can we update the desc to something about implementing https://www.w3.org/TR/did-core/#key-agreement?

Also are we expecting did test suite updates and results as well?

@adewaleafolabi going forward lets make sure our work passes as expected against the DID test suite as well so we know what we delivered is correct and spec compliant.

[fkim7]

FYI just realized this PR belongs to ticket https://github.com/knox-networks/gomono/issues/1269 instead - updating

[fkim7]

Please attach did test suite results

[adewaleafolabi]

Did test suite passed