Add 0.10.0 fixtures

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Description

This PR implements the following features:

• Add 0.10.0 fixtures

Link to issue

Closes #12

Type of change

• New feature (non-breaking change that adds functionality)

Test plan (required)

The fixtures will need to be verified manually. Taking a look through the code may be helpful for understanding how the fixtures were generated, but isn't required.

The fixtures are in fixtures/0.10.0:

.
├── all.json
├── build.json
├── cid.json
├── refute.json
└── verify.json

The verify fixtures request that an implementation check a token and associated proof map. For example:

{
    "name": "UCAN has a delegated capability",
    "task": "verify",
    "inputs": {
      "token": "eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9.eyJhdWQiOiJkaWQ6a2V5Ono2TWt0YWZaVFJFakprdlY1bWZKeGNMcE5Cb1ZQd0RMaFR1TWc5bmc3ZFk0ek1BTCIsImNhcCI6eyJtYWlsdG86YWxpY2VAZW1haWwuY29tIjp7ImVtYWlsL3NlbmQiOlt7fV19fSwiZXhwIjpudWxsLCJpc3MiOiJkaWQ6a2V5Ono2TWtmZkRaQ2tDVFdyZWc4ODY4ZkcxRkdGb2djSmo1WDZQWTkzcFBjV0RuOWJvYiIsInByZiI6WyJiYWZrcmVpYnZtaTc2NGNtdGFvNGsybWUybGtzYmY3NGRqcXBscWp3cWFsYWhkNHhmbnR5MzNycnBnbSJdLCJ1Y3YiOiIwLjEwLjAifQ.fwWnOgRSYryzvkvLyqYQZozrzKLIBfW4uGHKG6hR8Dygj1OOrDrcVXY88N7UQmj6O4ETXsrF99om5NK3QBB7Cw",
      "proofs": {
        "bafkreibvmi764cmtao4k2me2lksbf74djqplqjwqalahd4xfnty33rrpgm": "eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9.eyJhdWQiOiJkaWQ6a2V5Ono2TWtmZkRaQ2tDVFdyZWc4ODY4ZkcxRkdGb2djSmo1WDZQWTkzcFBjV0RuOWJvYiIsImNhcCI6eyJtYWlsdG86YWxpY2VAZW1haWwuY29tIjp7ImVtYWlsL3NlbmQiOlt7fV19fSwiZXhwIjpudWxsLCJpc3MiOiJkaWQ6a2V5Ono2TWtrODliQzNKclZxS2llNzFZRWNjNU0xU01WeHVDZ054NnpMWjhTWUpzeEFMaSIsInVjdiI6IjAuMTAuMCJ9.mWmgl4OyAl_OKCB0tYBaxbw_0MkR2jM0W_G6eH8OW39IuB9y9ArbBcCSnG7r0WdeZaJBh6Qf4MxLiuSKM3ZFCA"
      }
    },
    "assertions": {
      "header": {
        "alg": "EdDSA",
        "typ": "JWT"
      },
      "payload": {
        "ucv": "0.10.0",
        "iss": "did:key:z6MkffDZCkCTWreg8868fG1FGFogcJj5X6PY93pPcWDn9bob",
        "aud": "did:key:z6MktafZTREjJkvV5mfJxcLpNBoVPwDLhTuMg9ng7dY4zMAL",
        "exp": null,
        "cap": {
          "mailto:alice@email.com": {
            "email/send": [
              {}
            ]
          }
        },
        "prf": [
          "bafkreibvmi764cmtao4k2me2lksbf74djqplqjwqalahd4xfnty33rrpgm"
        ]
      },
      "signature": "fwWnOgRSYryzvkvLyqYQZozrzKLIBfW4uGHKG6hR8Dygj1OOrDrcVXY88N7UQmj6O4ETXsrF99om5NK3QBB7Cw"
    }
  }

An implementation should confirm the token encodes a valid and well-formed UCAN with a delegated capability. The assertions provide extra information that can be validated by the implementation.

The refute fixtures are similar but should refute the validity of the token. For example:

  {
    "name": "UCAN header is missing typ field",
    "task": "refute",
    "inputs": {
      "token": "eyJhbGciOiJFZERTQSJ9.eyJhdWQiOiJkaWQ6a2V5Ono2TWtmZkRaQ2tDVFdyZWc4ODY4ZkcxRkdGb2djSmo1WDZQWTkzcFBjV0RuOWJvYiIsImNhcCI6e30sImV4cCI6bnVsbCwiaXNzIjoiZGlkOmtleTp6Nk1razg5YkMzSnJWcUtpZTcxWUVjYzVNMVNNVnh1Q2dOeDZ6TFo4U1lKc3hBTGkiLCJ1Y3YiOiIwLjEwLjAifQ.mFFFVP-hfpI16xLV657cFPbmHHCy-LRuXaLaCr0c07o5gi9DLMs0RS54ZOWwNcCVLPwp1howg_aa4tUk9_DuBw",
      "proofs": {}
    },
    "assertions": {
      "header": {
        "alg": "EdDSA"
      },
      "payload": {
        "ucv": "0.10.0",
        "iss": "did:key:z6Mkk89bC3JrVqKie71YEcc5M1SMVxuCgNx6zLZ8SYJsxALi",
        "aud": "did:key:z6MkffDZCkCTWreg8868fG1FGFogcJj5X6PY93pPcWDn9bob",
        "exp": null,
        "cap": {}
      },
      "signature": "MkBYb77b19pn8fCODCMYpqNTs5_neWBsNHKL73U68S1w3sj0RCllCoHq-Ih-rrFsNvNWSSyOQN3ZC_nN966BAA"
    },
    "errors": [
      "missingField"
    ]
  }

Note that the refute fixtures also have an errors field that lists an expected error. Assertions are still included in the fixtures, but they omit any field that is malformed or missing.

The build fixtures request an implementation build a token when given a set of inputs. For example:

  {
    "name": "UCAN has an expiration",
    "task": "build",
    "inputs": {
      "version": "0.10.0",
      "issuer_base64_key": "U+bzp2GaFQHso587iSFWPSeCzbSfn/CbNHEz7ilKRZ1UQMmMS7qq4UhTzKn3X9Nj/4xgrwa+UqhMOeo4Ki8JUw==",
      "signature_scheme": "Ed25519",
      "audience": "did:key:z6MkffDZCkCTWreg8868fG1FGFogcJj5X6PY93pPcWDn9bob",
      "expiration": 9246211200,
      "capabilities": {}
    },
    "outputs": {
      "token": "eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9.eyJhdWQiOiJkaWQ6a2V5Ono2TWtmZkRaQ2tDVFdyZWc4ODY4ZkcxRkdGb2djSmo1WDZQWTkzcFBjV0RuOWJvYiIsImNhcCI6e30sImV4cCI6OTI0NjIxMTIwMCwiaXNzIjoiZGlkOmtleTp6Nk1razg5YkMzSnJWcUtpZTcxWUVjYzVNMVNNVnh1Q2dOeDZ6TFo4U1lKc3hBTGkiLCJ1Y3YiOiIwLjEwLjAifQ.pkJxQke-FDVB1Eg_7Jh2socNBKgo6_0OF1XXRfRMazmpXBG37tScYGAzJKB2Z4RFvSBpbBu29Sozrv4GQLFrDg"
    }
  }

Lastly, the toCID fixtures request an implementation compute the CID for a token with a specific hasher. For example:

  {
    "name": "Compute CID for token using SHA2-256 hasher",
    "task": "toCID",
    "inputs": {
      "token": "eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9.eyJhdWQiOiJkaWQ6a2V5Ono2TWtmZkRaQ2tDVFdyZWc4ODY4ZkcxRkdGb2djSmo1WDZQWTkzcFBjV0RuOWJvYiIsImNhcCI6e30sImV4cCI6bnVsbCwiaXNzIjoiZGlkOmtleTp6Nk1razg5YkMzSnJWcUtpZTcxWUVjYzVNMVNNVnh1Q2dOeDZ6TFo4U1lKc3hBTGkiLCJ1Y3YiOiIwLjEwLjAifQ.MkBYb77b19pn8fCODCMYpqNTs5_neWBsNHKL73U68S1w3sj0RCllCoHq-Ih-rrFsNvNWSSyOQN3ZC_nN966BAA",
      "hasher": "SHA2-256"
    },
    "outputs": {
      "cid": "bafkreibvv43zt5dfzwr5ejms3oeb5rkazufzkvqs6v3izwwlj64jmrchci"
    }
  }

all.json collects all of the above into a single JSON object.