cipher

Documentation

Index

• Variables
• func Decrypt(key [32]byte, id, content []byte) ([]byte, error)
• func Encrypt(key [32]byte, id, content []byte) []byte

Variables

var (
	// ErrContentTooShort is returned when caller tries to decrypt a content which is too short
	ErrContentTooShort = fmt.Errorf("the content must be at least %d for decryption", chacha20poly1305.NonceSizeX)
)

Functions

func Decrypt

func Decrypt(key [32]byte, id, content []byte) ([]byte, error)

Decrypt derives the premary key with the given id and a random value. It reads the first bytes to get the derivation seed and tries to decrypt the content. Returns the aead.Open error if any.

func Encrypt

func Encrypt(key [32]byte, id, content []byte) []byte

Encrypt derives the premary key with the given id and a random value. Returns the corresponding encrypted content with the random seed for derivation. The returned value can be decrypted by using the same key and id with Decrypt function.