dataintegrity

var (
	// ErrUnsupportedSuite is returned when a Signer or Verifier is required to use
	// a cryptographic suite for which it doesn't have a suite.Signer or
	// suite.Verifier (respectively) initialized.
	ErrUnsupportedSuite = errors.New("data integrity proof requires unsupported cryptographic suite")
	// ErrNoResolver is returned when a Signer or Verifier needs to resolve a
	// verification method but has no DID resolver.
	ErrNoResolver = errors.New("either did resolver or both verification method and verification relationship must be provided") //nolint:lll
	// ErrVMResolution is returned when a Signer or Verifier needs to resolve a
	// verification method but this fails.
	ErrVMResolution = errors.New("failed to resolve verification method")
)

var (
	// ErrMissingProof is returned when Verifier.VerifyProof() is given a document
	// without a data integrity proof field.
	ErrMissingProof = errors.New("missing data integrity proof")
	// ErrMalformedProof is returned when Verifier.VerifyProof() is given a document
	// with a proof that isn't a JSON object or is missing necessary standard
	// fields.
	ErrMalformedProof = errors.New("malformed data integrity proof")
	// ErrWrongProofType is returned when Verifier.VerifyProof() is given a document
	// with a proof that isn't a Data Integrity proof.
	ErrWrongProofType = errors.New("proof provided is not a data integrity proof")
	// ErrMismatchedPurpose is returned when Verifier.VerifyProof() is given a
	// document with a proof whose Purpose does not match the expected purpose
	// provided in the proof options.
	ErrMismatchedPurpose = errors.New("data integrity proof does not match expected purpose")
	// ErrOutOfDate is returned when Verifier.VerifyProof() is given a document with
	// a proof that was created more than models.ProofOptions.MaxAge seconds ago.
	ErrOutOfDate = errors.New("data integrity proof out of date")
	// ErrInvalidDomain is returned when Verifier.VerifyProof() is given a document
	// with a proof without the expected domain.
	ErrInvalidDomain = errors.New("data integrity proof has invalid domain")
	// ErrInvalidChallenge is returned when Verifier.VerifyProof() is given a
	// document with a proof without the expected challenge.
	ErrInvalidChallenge = errors.New("data integrity proof has invalid challenge")
)

var (
	// ErrProofGeneration is returned when Signer.AddProof() fails to generate a
	// proof using a supported cryptographic suite.
	ErrProofGeneration = errors.New("data integrity proof generation error")
)