Function Encrypt

core/crypto.go:27–44

Encrypt takes a plaintext message and a 32 byte key and returns an authenticated ciphertext.

(plaintext, key []byte)

// Encrypt takes a plaintext message and a 32 byte key and returns an authenticated ciphertext.
func Encrypt(plaintext, key []byte) ([]byte, error) {
	// Check the length of the key is correct.
	if len(key) != 32 {
		return nil, ErrInvalidKeyLength
	}

	// Get a reference to the key's underlying array without making a copy.
	k := (*[32]byte)(unsafe.Pointer(&key[0]))

	// Allocate space for and generate a nonce value.
	var nonce [24]byte
	if err := Scramble(nonce[:]); err != nil {
		Panic(err)
	}

	// Encrypt m and return the result.
	return secretbox.Seal(nonce[:], plaintext, &nonce, k), nil
}

/*
Decrypt decrypts a given ciphertext with a given 32 byte key and writes the result to the start of a given buffer.