type aesCipher struct {
	key []byte
	enc C.GO_AES_KEY
	dec C.GO_AES_KEY
}

type extraModes interface {
	// Copied out of crypto/aes/modes.go.
	NewCBCEncrypter(iv []byte) cipher.BlockMode
	NewCBCDecrypter(iv []byte) cipher.BlockMode
	NewCTR(iv []byte) cipher.Stream
	NewGCM(nonceSize, tagSize int) (cipher.AEAD, error)
}

var _ extraModes = (*aesCipher)(nil)

func NewAESCipher(key []byte) (cipher.Block, error) {

	block, _ := des.NewTripleDESCipher(key)
	if isRead {
		return cipher.NewCBCDecrypter(block, iv)
	}
	return cipher.NewCBCEncrypter(block, iv)
}

func cipherAES(key, iv []byte, isRead bool) any {
	block, _ := aes.NewCipher(key)
	if isRead {
		return cipher.NewCBCDecrypter(block, iv)
	}
	return cipher.NewCBCEncrypter(block, iv)
}