package symm

import (
	"crypto/des"
	"io"
)

func EncryptDESCBC(data, key, iv []byte, paddingType string) ([]byte, error) {
	block, err := des.NewCipher(key)
	if err != nil {
		return nil, err
	}
	return encryptWithBlockMode(block, data, iv, MODECBC, paddingType, PKCS5PADDING)
}

func DecryptDESCBC(src, key, iv []byte, paddingType string) ([]byte, error) {
	block, err := des.NewCipher(key)
	if err != nil {
		return nil, err
	}
	return decryptWithBlockMode(block, src, iv, MODECBC, paddingType, PKCS5PADDING)
}

func EncryptDESCBCStream(dst io.Writer, src io.Reader, key, iv []byte, paddingType string) error {
	block, err := des.NewCipher(key)
	if err != nil {
		return err
	}
	return encryptWithBlockModeStream(block, dst, src, iv, MODECBC, paddingType, PKCS5PADDING)
}

func DecryptDESCBCStream(dst io.Writer, src io.Reader, key, iv []byte, paddingType string) error {
	block, err := des.NewCipher(key)
	if err != nil {
		return err
	}
	return decryptWithBlockModeStream(block, dst, src, iv, MODECBC, paddingType, PKCS5PADDING)
}

func Encrypt3DESCBC(data, key, iv []byte, paddingType string) ([]byte, error) {
	block, err := des.NewTripleDESCipher(key)
	if err != nil {
		return nil, err
	}
	return encryptWithBlockMode(block, data, iv, MODECBC, paddingType, PKCS5PADDING)
}

func Decrypt3DESCBC(src, key, iv []byte, paddingType string) ([]byte, error) {
	block, err := des.NewTripleDESCipher(key)
	if err != nil {
		return nil, err
	}
	return decryptWithBlockMode(block, src, iv, MODECBC, paddingType, PKCS5PADDING)
}

func Encrypt3DESCBCStream(dst io.Writer, src io.Reader, key, iv []byte, paddingType string) error {
	block, err := des.NewTripleDESCipher(key)
	if err != nil {
		return err
	}
	return encryptWithBlockModeStream(block, dst, src, iv, MODECBC, paddingType, PKCS5PADDING)
}

func Decrypt3DESCBCStream(dst io.Writer, src io.Reader, key, iv []byte, paddingType string) error {
	block, err := des.NewTripleDESCipher(key)
	if err != nil {
		return err
	}
	return decryptWithBlockModeStream(block, dst, src, iv, MODECBC, paddingType, PKCS5PADDING)
}