feat: credential struct tags for json serialization (#197)

Fixes #193.

webauthn/authenticator.go

@@ -7,22 +7,22 @@ import (
 type Authenticator struct {
  // The AAGUID of the authenticator. An AAGUID is defined as an array containing the globally unique
  // identifier of the authenticator model being sought.
- AAGUID []byte
+ AAGUID []byte `json:"AAGUID"`
 
  // SignCount -Upon a new login operation, the Relying Party compares the stored signature counter value
  // with the new signCount value returned in the assertion’s authenticator data. If this new
  // signCount value is less than or equal to the stored value, a cloned authenticator may
  // exist, or the authenticator may be malfunctioning.
- SignCount uint32
+ SignCount uint32 `json:"signCount"`
 
  // CloneWarning - This is a signal that the authenticator may be cloned, i.e. at least two copies of the
  // credential private key may exist and are being used in parallel. Relying Parties should incorporate
  // this information into their risk scoring. Whether the Relying Party updates the stored signature
  // counter value in this case, or not, or fails the authentication ceremony or not, is Relying Party-specific.
- CloneWarning bool
+ CloneWarning bool `json:"cloneWarning"`
 
  // Attachment is the authenticatorAttachment value returned by the request.
- Attachment protocol.AuthenticatorAttachment
+ Attachment protocol.AuthenticatorAttachment `json:"attachment"`
 }
 
 // SelectAuthenticator allow for easy marshaling of authenticator options that are provided to the user.

webauthn/credential.go

@@ -7,40 +7,40 @@ import (
 // Credential contains all needed information about a WebAuthn credential for storage.
 type Credential struct {
  // A probabilistically-unique byte sequence identifying a public key credential source and its authentication assertions.
- ID []byte
+ ID []byte `json:"id"`
 
  // The public key portion of a Relying Party-specific credential key pair, generated by an authenticator and returned to
  // a Relying Party at registration time (see also public key credential). The private key portion of the credential key
  // pair is known as the credential private key. Note that in the case of self attestation, the credential key pair is also
  // used as the attestation key pair, see self attestation for details.
- PublicKey []byte
+ PublicKey []byte `json:"publicKey"`
 
  // The attestation format used (if any) by the authenticator when creating the credential.
- AttestationType string
+ AttestationType string `json:"attestationType"`
 
  // The transport types the authenticator supports.
- Transport []protocol.AuthenticatorTransport
+ Transport []protocol.AuthenticatorTransport `json:"transport"`
 
  // The commonly stored flags.
- Flags CredentialFlags
+ Flags CredentialFlags `json:"flags"`
 
  // The Authenticator information for a given certificate.
- Authenticator Authenticator
+ Authenticator Authenticator `json:"authenticator"`
 }
 
 type CredentialFlags struct {
  // Flag UP indicates the users presence.
- UserPresent bool
+ UserPresent bool `json:"userPresent"`
 
  // Flag UV indicates the user performed verification.
- UserVerified bool
+ UserVerified bool `json:"userVerified"`
 
  // Flag BE indicates the credential is able to be backed up and/or sync'd between devices. This should NEVER change.
- BackupEligible bool
+ BackupEligible bool `json:"backupEligible"`
 
  // Flag BS indicates the credential has been backed up and/or sync'd. This value can change but it's recommended
  // that RP's keep track of this value.
- BackupState bool
+ BackupState bool `json:"backupState"`
 }
 
 // Descriptor converts a Credential into a protocol.CredentialDescriptor.