This is a very basic demo of passwordless authentication in the web, also known as "WebAuthn".

# Overview

# Technical Details

`CredentialCreateOptions` generated by the program looks like this:
- The algorithm identifiers are defined [in the IANA registry](https://www.iana.org/assignments/cose/cose.xhtml#algorithms)
```json
{
  "rp": {
    "id": "localhost",
    "name": "FIDO2 Test"
  },
  "user": {
    "name": "test osteron",
    "id": "VGVzdCBPc3Rlcm9u",
    "displayName": "Test Osteron"
  },
  "challenge": "UkTN1q5kjoWcHOFTB6AZWQ",
  "pubKeyCredParams": [
    {
      "type": "public-key",
      "alg": -7
    },
    {
      "type": "public-key",
      "alg": -257
    },
    {
      "type": "public-key",
      "alg": -37
    },
    {
      "type": "public-key",
      "alg": -35
    },
    {
      "type": "public-key",
      "alg": -258
    },
    {
      "type": "public-key",
      "alg": -38
    },
    {
      "type": "public-key",
      "alg": -36
    },
    {
      "type": "public-key",
      "alg": -259
    },
    {
      "type": "public-key",
      "alg": -39
    },
    {
      "type": "public-key",
      "alg": -8
    }
  ],
  "timeout": 60000,
  "attestation": "none",
  "authenticatorSelection": {
    "requireResidentKey": false,
    "userVerification": "discouraged"
  },
  "excludeCredentials": [],
  "extensions": {
    "exts": true,
    "uvm": false
  },
  "status": "ok",
  "errorMessage": ""
}
```