func()

in src/encryption/encrypter.go [95:117]

• 17 lines of code
• 3 McCabe index (conditional complexity)

func (encrypter *Encrypter) Encrypt(log log.T, plainText []byte) (cipherText []byte, err error) {
	var aesgcm cipher.AEAD

	if aesgcm, err = getAEAD(encrypter.encryptionKey); err != nil {
		err = fmt.Errorf("%v", err)
		return
	}

	cipherText = make([]byte, nonceSize+len(plainText))
	nonce := make([]byte, nonceSize)
	if _, err = io.ReadFull(rand.Reader, nonce); err != nil {
		err = fmt.Errorf("error when generating nonce for encryption, %v", err)
		return
	}

	// Encrypt plain text using given key and newly generated nonce
	cipherTextWithoutNonce := aesgcm.Seal(nil, nonce, plainText, nil)

	// Append nonce to the beginning of the cipher text to be used while decrypting
	cipherText = append(cipherText[:nonceSize], nonce...)
	cipherText = append(cipherText[nonceSize:], cipherTextWithoutNonce...)
	return cipherText, nil
}