geheim

var (
	MetaSize     = int64(binary.Size(meta))
	HeaderSize   = int64(binary.Size(header))
	OverheadSize = MetaSize + HeaderSize
)

var (
	ErrKey    = errors.New("geheim: empty key")
	ErrHeader = errors.New("geheim: malformed header")
	ErrSign   = errors.New("geheim: signature verification failed")

	ErrCipher = fmt.Errorf("geheim: invalid %s (%s)", CipherDesc, CipherString)
	ErrKDF    = fmt.Errorf("geheim: invalid %s (%s)", KDFDesc, KDFString)
	ErrHash   = fmt.Errorf("geheim: invalid %s (%s)", HashDesc, HashString)
	ErrSec    = fmt.Errorf("geheim: invalid %s (%s)", SecDesc, SecString)
)

var CipherNames = map[Cipher]string{
	AES_256_CTR: "AES-256-CTR",
	ChaCha20:    "ChaCha20",
}

var CipherString = getOptionString(ciphers[:], CipherNames)

var HashNames = map[Hash]string{
	SHA3_224:    "SHA3-224",
	SHA3_256:    "SHA3-256",
	SHA3_384:    "SHA3-384",
	SHA3_512:    "SHA3-512",
	SHA_224:     "SHA-224",
	SHA_256:     "SHA-256",
	SHA_384:     "SHA-384",
	SHA_512:     "SHA-512",
	SHA_512_224: "SHA-512/224",
	SHA_512_256: "SHA-512/256",
}

var HashString = getOptionString(hs[:], HashNames)

var KDFNames = map[KDF]string{
	HKDF:     "HKDF",
	Argon2id: "Argon2id",
	Scrypt:   "Scrypt",
}

var KDFString = getOptionString(kdfs[:], KDFNames)

var SecString = func() string {
	d := make([]string, MaxSec-MinSec+1)
	for i := MinSec; i <= MaxSec; i++ {
		d[i] = fmt.Sprintf("%d:%s", i, FormatSize(GetMemory(i), 0))
	}
	return strings.Join(d, ", ")
}()