v4

type SignedHeaderRules interface {
	IsSigned(string) bool
}

type SignerOption func(*SignerOptions)

type SignerOptions struct {
	// Rules to determine what headers are signed.
	//
	// By default, the signer will only include the minimum required headers:
	//   - Host
	//   - X-Amz-*
	HeaderRules SignedHeaderRules

	// Setting this flag will instead cause the signer to use the
	// UNSIGNED-PAYLOAD sentinel if a hash is not explicitly provided.
	DisableImplicitPayloadHashing bool

	// Disables the automatic escaping of the URI path of the request for the
	// siganture's canonical string's path.
	//
	// Amazon S3 is an example of a service that requires this setting.
	DisableDoublePathEscape bool

	// Adds the X-Amz-Content-Sha256 header to signed requests.
	//
	// Amazon S3 is an example of a service that requires this setting.
	AddPayloadHashHeader bool
}