package kdf

import (
	"strings"
)

/*
	GetKDF returns a KDF from a name of the function.

	KDF.Setup must be called on the resulting KDF.
*/
func GetKDF(name string) (k KDF, err error) {

	switch strings.ToLower(name) {
	case BcryptPbkdfName:
		k = &BcryptPbkdf{}
	case NullName, "":
		k = &Null{}
	default:
		err = ErrUnknownKdf
		return
	}

	return
}

/*
	UnpackKDF returns a KDF from raw data as packed in a private key's bytes.

	KDF.Setup must be called on the resulting KDF.

	data can be:

		- a []byte, which can be:
			- the full private key bytes
			- KDF section (e.g. _ref/format.ed25519 2.0 + (3.0 to 3.0.0.1) or 2.0.0 + (3.0 to 3.0.0.1))
		- a *bytes.Buffer, which supports the same as above
*/
func UnpackKDF(data interface{}) (k KDF, err error) {

	return
}