crypto

type Decoder interface {
	Decrypt(ctB64 string) (pt []byte, err error)
}

type Encoder interface {
	Encrypt(pt []byte) (ctB64 string, err error)
}

type Signer interface {
	Sign(data []byte) (signatureB64 string, err error)
}

type Verifier interface {
	Verify(data []byte, signatureB64 string) (valid bool, err error)
}