go-transcrypt

This library enables the encryption/decryption of arbitrary data into a hex-encoded string for safe on-disk storage.

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Basics

Add the package to your project

go get github.com/jantytgat/go-transcrypt

Import

Next, you can manually add the import statement to your .go-file, or have it added automatically when using it.

import github.com/jantytgat/go-transcrypt

Encryption key

The encryption key is a string provide to encrypt the data with. A function CreateHexKey(bitSize int) is available to create a random key based on an RSA Private Key, and returns it as a hex-encoded string.

var err error
var key string
if key, err = transcrypt.CreateHexKey(2048); err != nil {
panic(err)
}

Salt

A salt is also required for proper encryption. It is possible to either generate a new salt for every call, by leaving the salt to nil when calling the `` Encrypt``` function. If you want to use a specific salt, you can either provide it manually (at least 12 bytes) or generate one.

var salt []byte
if salt, err = transcrypt.CreateSalt(); err != nil {
panic(err)
}

Operations

Currently, the following data types are supported for encryption:

• string
• int

Encrypt

var inputString = "hello world"
var encryptedString string
if encryptedString, err = transcrypt.Encrypt(key, salt, transcrypt.AES_256_GCM, inputString); err != nil {
panic(err)
}

Decrypt

var decryptedString any
if decryptedString, err = transcrypt.Decrypt(key, encryptedString); err != nil {
panic(err)
}

Example

An example is available in the examples directory.