(Go) AES Encrypt String (utf-8 byte representation) and return Base64

Demonstrates how to AES encrypt the utf-8 byte representation of a string and return in base64 format.

Chilkat Go Downloads Go Package for Windows, MacOS, Linux, Alpine Linux, Solaris

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    crypt := chilkat.NewCrypt2()

    crypt.SetCryptAlgorithm("aes")
    crypt.SetCipherMode("cbc")
    crypt.SetKeyLength(256)
    crypt.SetCharset("utf-8")
    crypt.SetEncodingMode("base64")

    ivHex := "000102030405060708090A0B0C0D0E0F"
    crypt.SetEncodedIV(ivHex,"hex")
    keyHex := "000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F"
    crypt.SetEncodedKey(keyHex,"hex")

    encryptedStr := crypt.EncryptStringENC("This is the original string")
    fmt.Println(*encryptedStr)

    // Let's say we want to URL encode the base64 string..
    crypt.SetCryptAlgorithm("none")
    crypt.SetEncodingMode("url")
    urlEncoded := crypt.EncryptStringENC(*encryptedStr)
    fmt.Println(*urlEncoded)

    // Sample output:

    //  q3fmgEqjqa9o//ZS6aPuh4Wtbrrxx/WOIQSKeVnesZg=
    //  q3fmgEqjqa9o%2F%2FZS6aPuh4Wtbrrxx%2FWOIQSKeVnesZg%3D

    // -------------------------------------------------------------------
    // Now let's do the reverse...
    // 

    // We start with a string that is the binary encrypted data, base64 encoded, and then URL encoded.
    encBase64Url := "q3fmgEqjqa9o%2F%2FZS6aPuh4Wtbrrxx%2FWOIQSKeVnesZg%3D"

    // We'll use the same crypt object.  If using a new instance of the crypt object,
    // make sure *all* settings are identical:  the algorithm, cipher mode, key length, charset, encoding mode, IV, and secret key.

    // Decode from URL...
    crypt.SetCryptAlgorithm("none")
    crypt.SetEncodingMode("url")
    encBase64 := crypt.DecryptStringENC(*urlEncoded)
    fmt.Println(*encBase64)

    // Now decrypt...
    crypt.SetCryptAlgorithm("aes")
    crypt.SetEncodingMode("base64")
    originalStr := crypt.DecryptStringENC(*encBase64)
    fmt.Println(*originalStr)

    crypt.DisposeCrypt2()