(Go) RSA Encrypt String to Binary Result and Reverse

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Demonstrates how to RSA encrypt a string to a binary result, and the reverse.

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    // The RSA public key is used for encryption, and the private key for decryption.

    // The public key's role is to make encryption accessible to anyone while ensuring that
    // only the private key holder can decrypt the messages.
    // The public key is designed to be widely distributed so anyone can use it to encrypt messages
    // intended for the owner of the private key.

    // Load our 2048-bit RSA public key.
    pubKey := chilkat.NewPublicKey()
    // In all Chilkat methods expecting a path, you pass either absolute or relative paths.
    success := pubKey.LoadFromFile("qa_data/rsaKeys/myTestRsaPublic.pem")
    if success == false {
        fmt.Println(pubKey.LastErrorText())
        pubKey.DisposePublicKey()
        return
    }

    rsa := chilkat.NewRsa()

    // Tell RSA to use the public key.
    rsa.ImportPublicKeyObj(pubKey)

    // RSA encryption is for small amounts of data, on the order of 200 bytes or less.
    // The maximum number of bytes that can be RSA encrypted depends
    // on the RSA key size and padding scheme (OAEP padding vs PKCS#1 v1.5 padding).
    // For specific limits, see: RSA Encryption Maximum Number of Bytes

    // Encrypt the utf-8 byte representation of the string.
    rsa.SetCharset("utf-8")

    // Be Careful when Using non-us-ascii String Literals in Source Code
    var encBytes []byte
    encBytes = rsa.EncryptString("Élève français dîne à côté d’un café où l’on sert déjà du gâteau au chocolat et des éclairs délicieux",false)

    // ------------------------------------------------------------------------------------------------------------------------
    // Let's decrypt, which requires the matching private key...

    // Load the matching 2048-bit RSA private key.
    privKey := chilkat.NewPrivateKey()
    password := "secret"
    success = privKey.LoadAnyFormatFile("qa_data/rsaKeys/myTestRsaPrivate.pem",password)
    if success == false {
        fmt.Println(privKey.LastErrorText())
        pubKey.DisposePublicKey()
        rsa.DisposeRsa()
        privKey.DisposePrivateKey()
        return
    }

    // Tell the RSA object to use the private key.
    rsa.ImportPrivateKeyObj(privKey)

    // Indicate that after decrypting the resultant decrypted bytes contains the utf-8 byte representation of the text.
    rsa.SetCharset("utf-8")
    originalText := rsa.DecryptString(encBytes,true)
    if success == false {
        fmt.Println(rsa.LastErrorText())
        pubKey.DisposePublicKey()
        rsa.DisposeRsa()
        privKey.DisposePrivateKey()
        return
    }

    fmt.Println("Original text = ", *originalText)
    fmt.Println("Success.")

    pubKey.DisposePublicKey()
    rsa.DisposeRsa()
    privKey.DisposePrivateKey()